CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org BCC: l...@intel.com CC: linux-ker...@vger.kernel.org TO: Arnd Bergmann <a...@arndb.de> CC: Masahiro Yamada <masahi...@kernel.org> CC: Alex Shi <al...@kernel.org> CC: Nick Desaulniers <ndesaulni...@google.com> CC: Miguel Ojeda <oj...@kernel.org> CC: Nathan Chancellor <nat...@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: be2d3ecedd9911fbfd7e55cc9ceac5f8b79ae4cf commit: e8c07082a810fbb9db303a2b66b66b8d7e588b53 Kbuild: move to -std=gnu11 date: 3 weeks ago :::::: branch date: 17 hours ago :::::: commit date: 3 weeks ago config: arm-randconfig-c002-20220402 (https://download.01.org/0day-ci/archive/20220403/202204032118.o22zjifp-...@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c4a1b07d0979e7ff20d7d541af666d822d66b566) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e8c07082a810fbb9db303a2b66b66b8d7e588b53 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout e8c07082a810fbb9db303a2b66b66b8d7e588b53 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> clang-analyzer warnings: (new ones prefixed by >>) 51 warnings generated. lib/irq_poll.c:181:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memset(iop, 0, sizeof(*iop)); ^~~~~~ lib/irq_poll.c:181:2: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 memset(iop, 0, sizeof(*iop)); ^~~~~~ Suppressed 50 warnings (50 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 42 warnings generated. lib/stackdepot.c:139:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(stack->entries, entries, flex_array_size(stack, entries, size)); ^~~~~~ lib/stackdepot.c:139:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(stack->entries, entries, flex_array_size(stack, entries, size)); ^~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 41 warnings generated. Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 51 warnings generated. Suppressed 51 warnings (50 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 26 warnings generated. Suppressed 26 warnings (26 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 25 warnings generated. Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 25 warnings generated. Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 25 warnings generated. Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 25 warnings generated. Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 66 warnings generated. Suppressed 66 warnings (66 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 42 warnings generated. fs/proc/self.c:25:2: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] sprintf(name, "%u", tgid); ^~~~~~~ fs/proc/self.c:25:2: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 sprintf(name, "%u", tgid); ^~~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 42 warnings generated. fs/proc/thread_self.c:25:2: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] sprintf(name, "%u/task/%u", tgid, pid); ^~~~~~~ fs/proc/thread_self.c:25:2: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 sprintf(name, "%u/task/%u", tgid, pid); ^~~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 43 warnings generated. drivers/xen/xenbus/xenbus_client.c:294:8: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] len = sprintf(printf_buffer, "%i ", -err); ^~~~~~~ drivers/xen/xenbus/xenbus_client.c:294:8: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 len = sprintf(printf_buffer, "%i ", -err); ^~~~~~~ drivers/xen/xenbus/xenbus_client.c:295:2: warning: Call to function 'vsnprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'vsnprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] vsnprintf(printf_buffer + len, PRINTF_BUFFER_SIZE - len, fmt, ap); ^~~~~~~~~ drivers/xen/xenbus/xenbus_client.c:295:2: note: Call to function 'vsnprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'vsnprintf_s' in case of C11 vsnprintf(printf_buffer + len, PRINTF_BUFFER_SIZE - len, fmt, ap); ^~~~~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 43 warnings generated. drivers/xen/xenbus/xenbus_comms.c:135:3: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(dst, data, avail); ^~~~~~ drivers/xen/xenbus/xenbus_comms.c:135:3: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(dst, data, avail); ^~~~~~ drivers/xen/xenbus/xenbus_comms.c:188:3: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(data, src, avail); ^~~~~~ drivers/xen/xenbus/xenbus_comms.c:188:3: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(data, src, avail); ^~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 31 warnings generated. drivers/xen/xenbus/xenbus_xs.c:412:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(&ret[*num], strings, len); ^~~~~~ drivers/xen/xenbus/xenbus_xs.c:412:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(&ret[*num], strings, len); ^~~~~~ >> drivers/xen/xenbus/xenbus_xs.c:580:8: warning: Call to function 'vsscanf' is >> insecure as it does not provide bounding of the memory buffer or security >> checks introduced in the C11 standard. Replace with analogous functions that >> support length arguments or provides boundary checks such as 'vsscanf_s' in >> case of C11 >> [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = vsscanf(val, fmt, ap); ^~~~~~~ drivers/xen/xenbus/xenbus_xs.c:580:8: note: Call to function 'vsscanf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'vsscanf_s' in case of C11 ret = vsscanf(val, fmt, ap); ^~~~~~~ >> drivers/xen/xenbus/xenbus_xs.c:647:8: warning: Call to function 'sscanf' is >> insecure as it does not provide bounding of the memory buffer or security >> checks introduced in the C11 standard. Replace with analogous functions that >> support length arguments or provides boundary checks such as 'sscanf_s' in >> case of C11 >> [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] if (sscanf(p, fmt, result) == 0) ^~~~~~ drivers/xen/xenbus/xenbus_xs.c:647:8: note: Call to function 'sscanf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sscanf_s' in case of C11 if (sscanf(p, fmt, result) == 0) ^~~~~~ drivers/xen/xenbus/xenbus_xs.c:770:2: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] sprintf(token, "%lX", (long)watch); ^~~~~~~ drivers/xen/xenbus/xenbus_xs.c:770:2: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 sprintf(token, "%lX", (long)watch); ^~~~~~~ drivers/xen/xenbus/xenbus_xs.c:801:2: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] sprintf(token, "%lX", (long)watch); ^~~~~~~ drivers/xen/xenbus/xenbus_xs.c:801:2: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 sprintf(token, "%lX", (long)watch); ^~~~~~~ drivers/xen/xenbus/xenbus_xs.c:860:3: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] sprintf(token, "%lX", (long)watch); ^~~~~~~ drivers/xen/xenbus/xenbus_xs.c:860:3: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 sprintf(token, "%lX", (long)watch); ^~~~~~~ Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 42 warnings generated. security/keys/gc.c:366:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memset(&key->payload, KEY_DESTROY, sizeof(key->payload)); ^~~~~~ security/keys/gc.c:366:2: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 memset(&key->payload, KEY_DESTROY, sizeof(key->payload)); ^~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 25 warnings generated. Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 25 warnings generated. Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 27 warnings generated. drivers/gpio/gpio-tegra186.c:579:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] struct device *dev = gpio->gpio.parent; ^~~ ~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-tegra186.c:579:17: note: Value stored to 'dev' during its initialization is never read struct device *dev = gpio->gpio.parent; ^~~ ~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-tegra186.c:618:6: warning: Value stored to 'value' is never read [clang-analyzer-deadcode.DeadStores] value = readl(base + offset); ^ drivers/gpio/gpio-tegra186.c:618:6: note: Value stored to 'value' is never read Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 43 warnings generated. drivers/spi/spi-pxa2xx-dma.c:86:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memset(&cfg, 0, sizeof(cfg)); ^~~~~~ drivers/spi/spi-pxa2xx-dma.c:86:2: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 memset(&cfg, 0, sizeof(cfg)); ^~~~~~ Suppressed 42 warnings (42 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 42 warnings generated. arch/arm/kernel/devtree.c:232:6: warning: Access to field 'dt_fixup' results in a dereference of a null pointer (loaded from variable 'mdesc') [clang-analyzer-core.NullDereference] if (mdesc->dt_fixup) ^~~~~ arch/arm/kernel/devtree.c:206:6: note: Assuming 'dt_virt' is non-null if (!dt_virt || !early_init_dt_verify(dt_virt)) ^~~~~~~~ arch/arm/kernel/devtree.c:206:6: note: Left side of '||' is false arch/arm/kernel/devtree.c:206:18: note: Assuming the condition is false if (!dt_virt || !early_init_dt_verify(dt_virt)) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm/kernel/devtree.c:206:2: note: Taking false branch if (!dt_virt || !early_init_dt_verify(dt_virt)) ^ arch/arm/kernel/devtree.c:209:2: note: Value assigned to 'mdesc' mdesc = of_flat_dt_match_machine(mdesc_best, arch_get_next_mach); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm/kernel/devtree.c:211:6: note: Assuming 'mdesc' is null if (!mdesc) { ^~~~~~ arch/arm/kernel/devtree.c:211:2: note: Taking true branch if (!mdesc) { ^ arch/arm/kernel/devtree.c:221:10: note: Assuming 'size' is <= 0 while (size > 0) { ^~~~~~~~ arch/arm/kernel/devtree.c:221:3: note: Loop condition is false. Execution continues on line 226 while (size > 0) { ^ arch/arm/kernel/devtree.c:232:6: note: Access to field 'dt_fixup' results in a dereference of a null pointer (loaded from variable 'mdesc') if (mdesc->dt_fixup) ^~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 43 warnings generated. arch/arm/kernel/hw_breakpoint.c:304:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memset(&ctrl, 0, sizeof(ctrl)); ^~~~~~ -- ^~~~~~ drivers/char/tpm/tpm2-space.c:567:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(space->context_buf, chip->work_space.context_buf, ^~~~~~ drivers/char/tpm/tpm2-space.c:569:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(space->session_buf, chip->work_space.session_buf, ^~~~~~ drivers/char/tpm/tpm2-space.c:569:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(space->session_buf, chip->work_space.session_buf, ^~~~~~ Suppressed 54 warnings (53 in non-user code, 1 with check filters). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 54 warnings generated. fs/proc/proc_sysctl.c:980:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(new_name, name, namelen); ^~~~~~ fs/proc/proc_sysctl.c:980:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(new_name, name, namelen); ^~~~~~ fs/proc/proc_sysctl.c:1197:3: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(link_name, entry->procname, len); ^~~~~~ fs/proc/proc_sysctl.c:1197:3: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(link_name, entry->procname, len); ^~~~~~ fs/proc/proc_sysctl.c:1231:3: warning: Value stored to 'link' is never read [clang-analyzer-deadcode.DeadStores] link = find_entry(&head, dir, procname, strlen(procname)); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/proc/proc_sysctl.c:1231:3: note: Value stored to 'link' is never read link = find_entry(&head, dir, procname, strlen(procname)); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/proc/proc_sysctl.c:1442:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(pos, name, namelen); ^~~~~~ fs/proc/proc_sysctl.c:1442:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(pos, name, namelen); ^~~~~~ fs/proc/proc_sysctl.c:1752:2: warning: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memset(set, 0, sizeof(*set)); ^~~~~~ fs/proc/proc_sysctl.c:1752:2: note: Call to function 'memset' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memset_s' in case of C11 memset(set, 0, sizeof(*set)); ^~~~~~ Suppressed 49 warnings (49 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 54 warnings generated. drivers/xen/xenbus/xenbus_probe.c:220:1: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] XENBUS_SHOW_STAT(event_channels); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:220:1: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 XENBUS_SHOW_STAT(event_channels); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:221:1: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] XENBUS_SHOW_STAT(events); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:221:1: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 XENBUS_SHOW_STAT(events); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:222:1: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] XENBUS_SHOW_STAT(spurious_events); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:222:1: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 XENBUS_SHOW_STAT(spurious_events); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:223:1: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] XENBUS_SHOW_STAT(jiffies_eoi_delayed); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:223:1: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 XENBUS_SHOW_STAT(jiffies_eoi_delayed); ^ drivers/xen/xenbus/xenbus_probe.c:216:9: note: expanded from macro 'XENBUS_SHOW_STAT' return sprintf(buf, "%d\n", atomic_read(&dev->name)); \ ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:231:9: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buf, "%d\n", dev->spurious_threshold); ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:231:9: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buf, "%d\n", dev->spurious_threshold); ^~~~~~~ >> drivers/xen/xenbus/xenbus_probe.c:451:9: warning: Call to function 'sprintf' >> is insecure as it does not provide bounding of the memory buffer or security >> checks introduced in the C11 standard. Replace with analogous functions that >> support length arguments or provides boundary checks such as 'sprintf_s' in >> case of C11 >> [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buf, "%s\n", to_xenbus_device(dev)->nodename); ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:451:9: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buf, "%s\n", to_xenbus_device(dev)->nodename); ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:458:9: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buf, "%s\n", to_xenbus_device(dev)->devicetype); ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:458:9: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buf, "%s\n", to_xenbus_device(dev)->devicetype); ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:465:9: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buf, "%s:%s\n", dev->bus->name, ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:465:9: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buf, "%s:%s\n", dev->bus->name, ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:473:9: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buf, "%s\n", ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:473:9: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buf, "%s\n", ^~~~~~~ drivers/xen/xenbus/xenbus_probe.c:524:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcpy(tmpstring, nodename); ^~~~~~ drivers/xen/xenbus/xenbus_probe.c:524:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 strcpy(tmpstring, nodename); ^~~~~~ drivers/xen/xenbus/xenbus_probe.c:528:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy] strcpy(tmpstring, type); ^~~~~~ drivers/xen/xenbus/xenbus_probe.c:528:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 strcpy(tmpstring, type); ^~~~~~ drivers/xen/xenbus/xenbus_probe.c:640:2: warning: Call to function 'snprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'snprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] snprintf(type, XEN_BUS_ID_SIZE, "%.*s", (int)strcspn(p, "/"), p); ^~~~~~~~ drivers/xen/xenbus/xenbus_probe.c:640:2: note: Call to function 'snprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'snprintf_s' in case of C11 snprintf(type, XEN_BUS_ID_SIZE, "%.*s", (int)strcspn(p, "/"), p); ^~~~~~~~ Suppressed 42 warnings (42 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 41 warnings generated. Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 7 warnings generated. Suppressed 7 warnings (7 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 46 warnings generated. include/linux/log2.h:67:13: warning: The result of the left shift is undefined due to shifting by '4294967295', which is greater or equal to the width of type 'unsigned long' [clang-analyzer-core.UndefinedBinaryOperatorResult] return 1UL << (fls_long(n) - 1); ^ lib/kfifo.c:71:2: note: Taking true branch if (!is_power_of_2(size)) ^ lib/kfifo.c:72:10: note: '?' condition is false size = rounddown_pow_of_two(size); ^ include/linux/log2.h:193:2: note: expanded from macro 'rounddown_pow_of_two' __builtin_constant_p(n) ? ( \ ^ lib/kfifo.c:72:10: note: Calling '__rounddown_pow_of_two' size = rounddown_pow_of_two(size); ^ include/linux/log2.h:195:2: note: expanded from macro 'rounddown_pow_of_two' __rounddown_pow_of_two(n) \ ^~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/log2.h:67:13: note: The result of the left shift is undefined due to shifting by '4294967295', which is greater or equal to the width of type 'unsigned long' return 1UL << (fls_long(n) - 1); ^ ~~~~~~~~~~~~~~~~~ lib/kfifo.c:104:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(fifo->data + off, src, l); ^~~~~~ lib/kfifo.c:104:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(fifo->data + off, src, l); ^~~~~~ lib/kfifo.c:105:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(fifo->data, src + l, len - l); ^~~~~~ lib/kfifo.c:105:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(fifo->data, src + l, len - l); ^~~~~~ lib/kfifo.c:143:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(dst, fifo->data + off, l); ^~~~~~ lib/kfifo.c:143:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(dst, fifo->data + off, l); ^~~~~~ lib/kfifo.c:144:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(dst + l, fifo->data, len - l); ^~~~~~ lib/kfifo.c:144:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(dst + l, fifo->data, len - l); ^~~~~~ Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. -- ^ drivers/base/cacheinfo.c:25:29: note: expanded from macro 'ci_cacheinfo' #define ci_cacheinfo(cpu) (&per_cpu(ci_cpu_cacheinfo, cpu)) ^ include/linux/percpu-defs.h:269:29: note: expanded from macro 'per_cpu' #define per_cpu(var, cpu) (*per_cpu_ptr(&(var), cpu)) ^ include/linux/percpu-defs.h:263:47: note: expanded from macro 'per_cpu_ptr' #define per_cpu_ptr(ptr, cpu) ({ (void)(cpu); VERIFY_PERCPU_PTR(ptr); }) ^ include/linux/percpu-defs.h:259:2: note: expanded from macro 'VERIFY_PERCPU_PTR' __verify_pcpu_ptr(__p); \ ^ include/linux/percpu-defs.h:217:37: note: expanded from macro '__verify_pcpu_ptr' #define __verify_pcpu_ptr(ptr) \ ^ drivers/base/cacheinfo.c:270:18: note: Assuming 'index' is < field 'num_leaves' for (index = 0; index < cache_leaves(cpu); index++) { ^~~~~~~~~~~~~~~~~~~~~~~~~ drivers/base/cacheinfo.c:270:2: note: Loop condition is true. Entering loop body for (index = 0; index < cache_leaves(cpu); index++) { ^ drivers/base/cacheinfo.c:271:3: note: Value assigned to 'this_leaf' this_leaf = this_cpu_ci->info_list + index; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/base/cacheinfo.c:272:3: note: Loop condition is true. Entering loop body for_each_cpu(sibling, &this_leaf->shared_cpu_map) { ^ include/linux/cpumask.h:190:2: note: expanded from macro 'for_each_cpu' for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask) ^ drivers/base/cacheinfo.c:275:8: note: 'sibling' is not equal to 'cpu' if (sibling == cpu) /* skip itself */ ^~~~~~~ drivers/base/cacheinfo.c:275:4: note: Taking false branch if (sibling == cpu) /* skip itself */ ^ drivers/base/cacheinfo.c:279:8: note: Assuming field 'info_list' is null if (!sib_cpu_ci->info_list) ^~~~~~~~~~~~~~~~~~~~~~ drivers/base/cacheinfo.c:279:4: note: Taking true branch if (!sib_cpu_ci->info_list) ^ drivers/base/cacheinfo.c:280:5: note: Execution continues on line 272 continue; ^ drivers/base/cacheinfo.c:272:3: note: Loop condition is false. Execution continues on line 286 for_each_cpu(sibling, &this_leaf->shared_cpu_map) { ^ include/linux/cpumask.h:190:2: note: expanded from macro 'for_each_cpu' for ((cpu) = 0; (cpu) < 1; (cpu)++, (void)mask) ^ drivers/base/cacheinfo.c:286:7: note: Calling 'of_have_populated_dt' if (of_have_populated_dt()) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/of.h:180:9: note: Assuming 'of_root' is not equal to NULL return of_root != NULL; ^~~~~~~~~~~~~~~ include/linux/of.h:180:2: note: Returning the value 1, which participates in a condition later return of_root != NULL; ^~~~~~~~~~~~~~~~~~~~~~ drivers/base/cacheinfo.c:286:7: note: Returning from 'of_have_populated_dt' if (of_have_populated_dt()) ^~~~~~~~~~~~~~~~~~~~~~ drivers/base/cacheinfo.c:286:3: note: Taking true branch if (of_have_populated_dt()) ^ drivers/base/cacheinfo.c:287:16: note: Access to field 'fw_token' results in a dereference of a null pointer (loaded from variable 'this_leaf') of_node_put(this_leaf->fw_token); ^~~~~~~~~ Suppressed 14 warnings (14 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 44 warnings generated. drivers/xen/evtchn.c:354:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(new_ring, old_ring, u->ring_size * sizeof(*u->ring)); ^~~~~~ drivers/xen/evtchn.c:354:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(new_ring, old_ring, u->ring_size * sizeof(*u->ring)); ^~~~~~ drivers/xen/evtchn.c:355:2: warning: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] memcpy(new_ring + u->ring_size, old_ring, ^~~~~~ drivers/xen/evtchn.c:355:2: note: Call to function 'memcpy' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'memcpy_s' in case of C11 memcpy(new_ring + u->ring_size, old_ring, ^~~~~~ Suppressed 42 warnings (42 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 41 warnings generated. Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 41 warnings generated. Suppressed 41 warnings (41 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 42 warnings generated. drivers/xen/sys-hypervisor.c:40:9: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buffer, "xen\n"); ^~~~~~~ drivers/xen/sys-hypervisor.c:40:9: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buffer, "xen\n"); ^~~~~~~ >> drivers/xen/sys-hypervisor.c:69:9: warning: Call to function 'sprintf' is >> insecure as it does not provide bounding of the memory buffer or security >> checks introduced in the C11 standard. Replace with analogous functions that >> support length arguments or provides boundary checks such as 'sprintf_s' in >> case of C11 >> [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buffer, "%s\n", type); ^~~~~~~ drivers/xen/sys-hypervisor.c:69:9: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buffer, "%s\n", type); ^~~~~~~ drivers/xen/sys-hypervisor.c:84:10: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buffer, "%d\n", version >> 16); ^~~~~~~ drivers/xen/sys-hypervisor.c:84:10: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buffer, "%d\n", version >> 16); ^~~~~~~ drivers/xen/sys-hypervisor.c:94:10: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] return sprintf(buffer, "%d\n", version & 0xff); ^~~~~~~ drivers/xen/sys-hypervisor.c:94:10: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 return sprintf(buffer, "%d\n", version & 0xff); ^~~~~~~ drivers/xen/sys-hypervisor.c:109:10: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", extra); ^~~~~~~ drivers/xen/sys-hypervisor.c:109:10: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", extra); ^~~~~~~ drivers/xen/sys-hypervisor.c:153:8: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", val); ^~~~~~~ drivers/xen/sys-hypervisor.c:153:8: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", val); ^~~~~~~ drivers/xen/sys-hypervisor.c:165:8: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%pU\n", uuid); ^~~~~~~ drivers/xen/sys-hypervisor.c:165:8: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%pU\n", uuid); ^~~~~~~ drivers/xen/sys-hypervisor.c:187:10: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", info->compiler); ^~~~~~~ drivers/xen/sys-hypervisor.c:187:10: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", info->compiler); ^~~~~~~ drivers/xen/sys-hypervisor.c:205:10: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", info->compile_by); ^~~~~~~ drivers/xen/sys-hypervisor.c:205:10: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", info->compile_by); ^~~~~~~ drivers/xen/sys-hypervisor.c:223:10: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", info->compile_date); ^~~~~~~ drivers/xen/sys-hypervisor.c:223:10: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", info->compile_date); ^~~~~~~ drivers/xen/sys-hypervisor.c:260:10: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", caps); ^~~~~~~ drivers/xen/sys-hypervisor.c:260:10: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", caps); ^~~~~~~ drivers/xen/sys-hypervisor.c:278:10: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s\n", cset); ^~~~~~~ drivers/xen/sys-hypervisor.c:278:10: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s\n", cset); ^~~~~~~ drivers/xen/sys-hypervisor.c:297:10: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%"PRI_xen_ulong"\n", ^~~~~~~ drivers/xen/sys-hypervisor.c:297:10: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%"PRI_xen_ulong"\n", ^~~~~~~ drivers/xen/sys-hypervisor.c:313:9: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%x\n", ret); ^~~~~~~ drivers/xen/sys-hypervisor.c:313:9: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%x\n", ret); ^~~~~~~ drivers/xen/sys-hypervisor.c:328:9: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%08x", info.submap); ^~~~~~~ drivers/xen/sys-hypervisor.c:328:9: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%08x", info.submap); ^~~~~~~ drivers/xen/sys-hypervisor.c:364:10: warning: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "<denied>"); ^~~~~~~ drivers/xen/sys-hypervisor.c:364:10: note: Call to function 'sprintf' is insecure as it does not provide security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "<denied>"); ^~~~~~~ drivers/xen/sys-hypervisor.c:375:9: warning: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 [clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling] ret = sprintf(buffer, "%s", buildid->buf); ^~~~~~~ drivers/xen/sys-hypervisor.c:375:9: note: Call to function 'sprintf' is insecure as it does not provide bounding of the memory buffer or security checks introduced in the C11 standard. Replace with analogous functions that support length arguments or provides boundary checks such as 'sprintf_s' in case of C11 ret = sprintf(buffer, "%s", buildid->buf); ^~~~~~~ Suppressed 25 warnings (25 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. 50 warnings generated. Suppressed 50 warnings (50 in non-user code). Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. vim +580 drivers/xen/xenbus/xenbus_xs.c 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 398 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 399 static char **split(char *strings, unsigned int len, unsigned int *num) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 400 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 401 char *p, **ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 402 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 403 /* Count the strings. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 404 *num = count_strings(strings, len); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 405 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 406 /* Transfer to one big alloc for easy freeing. */ a144ff09bc52ef Ian Campbell 2008-06-17 407 ret = kmalloc(*num * sizeof(char *) + len, GFP_NOIO | __GFP_HIGH); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 408 if (!ret) { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 409 kfree(strings); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 410 return ERR_PTR(-ENOMEM); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 411 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 @412 memcpy(&ret[*num], strings, len); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 413 kfree(strings); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 414 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 415 strings = (char *)&ret[*num]; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 416 for (p = strings, *num = 0; p < strings + len; p += strlen(p) + 1) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 417 ret[(*num)++] = p; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 418 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 419 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 420 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 421 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 422 char **xenbus_directory(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 423 const char *dir, const char *node, unsigned int *num) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 424 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 425 char *strings, *path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 426 unsigned int len; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 427 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 428 path = join(dir, node); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 429 if (IS_ERR(path)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 430 return (char **)path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 431 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 432 strings = xs_single(t, XS_DIRECTORY, path, &len); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 433 kfree(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 434 if (IS_ERR(strings)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 435 return (char **)strings; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 436 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 437 return split(strings, len, num); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 438 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 439 EXPORT_SYMBOL_GPL(xenbus_directory); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 440 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 441 /* Check if a path exists. Return 1 if it does. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 442 int xenbus_exists(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 443 const char *dir, const char *node) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 444 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 445 char **d; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 446 int dir_n; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 447 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 448 d = xenbus_directory(t, dir, node, &dir_n); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 449 if (IS_ERR(d)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 450 return 0; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 451 kfree(d); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 452 return 1; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 453 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 454 EXPORT_SYMBOL_GPL(xenbus_exists); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 455 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 456 /* Get the value of a single file. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 457 * Returns a kmalloced value: call free() on it after use. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 458 * len indicates length in bytes. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 459 */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 460 void *xenbus_read(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 461 const char *dir, const char *node, unsigned int *len) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 462 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 463 char *path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 464 void *ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 465 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 466 path = join(dir, node); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 467 if (IS_ERR(path)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 468 return (void *)path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 469 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 470 ret = xs_single(t, XS_READ, path, len); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 471 kfree(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 472 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 473 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 474 EXPORT_SYMBOL_GPL(xenbus_read); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 475 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 476 /* Write the value of a single file. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 477 * Returns -err on failure. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 478 */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 479 int xenbus_write(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 480 const char *dir, const char *node, const char *string) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 481 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 482 const char *path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 483 struct kvec iovec[2]; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 484 int ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 485 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 486 path = join(dir, node); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 487 if (IS_ERR(path)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 488 return PTR_ERR(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 489 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 490 iovec[0].iov_base = (void *)path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 491 iovec[0].iov_len = strlen(path) + 1; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 492 iovec[1].iov_base = (void *)string; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 493 iovec[1].iov_len = strlen(string); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 494 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 495 ret = xs_error(xs_talkv(t, XS_WRITE, iovec, ARRAY_SIZE(iovec), NULL)); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 496 kfree(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 497 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 498 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 499 EXPORT_SYMBOL_GPL(xenbus_write); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 500 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 501 /* Create a new directory. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 502 int xenbus_mkdir(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 503 const char *dir, const char *node) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 504 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 505 char *path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 506 int ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 507 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 508 path = join(dir, node); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 509 if (IS_ERR(path)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 510 return PTR_ERR(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 511 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 512 ret = xs_error(xs_single(t, XS_MKDIR, path, NULL)); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 513 kfree(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 514 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 515 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 516 EXPORT_SYMBOL_GPL(xenbus_mkdir); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 517 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 518 /* Destroy a file or directory (directories must be empty). */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 519 int xenbus_rm(struct xenbus_transaction t, const char *dir, const char *node) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 520 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 521 char *path; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 522 int ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 523 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 524 path = join(dir, node); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 525 if (IS_ERR(path)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 526 return PTR_ERR(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 527 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 528 ret = xs_error(xs_single(t, XS_RM, path, NULL)); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 529 kfree(path); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 530 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 531 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 532 EXPORT_SYMBOL_GPL(xenbus_rm); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 533 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 534 /* Start a transaction: changes by others will not be seen during this 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 535 * transaction, and changes will not be visible to others until end. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 536 */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 537 int xenbus_transaction_start(struct xenbus_transaction *t) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 538 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 539 char *id_str; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 540 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 541 id_str = xs_single(XBT_NIL, XS_TRANSACTION_START, "", NULL); fd8aa9095a95c0 Juergen Gross 2017-02-09 542 if (IS_ERR(id_str)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 543 return PTR_ERR(id_str); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 544 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 545 t->id = simple_strtoul(id_str, NULL, 0); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 546 kfree(id_str); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 547 return 0; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 548 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 549 EXPORT_SYMBOL_GPL(xenbus_transaction_start); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 550 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 551 /* End a transaction. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 552 * If abandon is true, transaction is discarded instead of committed. 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 553 */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 554 int xenbus_transaction_end(struct xenbus_transaction t, int abort) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 555 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 556 char abortstr[2]; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 557 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 558 if (abort) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 559 strcpy(abortstr, "F"); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 560 else 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 561 strcpy(abortstr, "T"); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 562 fd8aa9095a95c0 Juergen Gross 2017-02-09 563 return xs_error(xs_single(t, XS_TRANSACTION_END, abortstr, NULL)); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 564 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 565 EXPORT_SYMBOL_GPL(xenbus_transaction_end); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 566 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 567 /* Single read and scanf: returns -errno or num scanned. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 568 int xenbus_scanf(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 569 const char *dir, const char *node, const char *fmt, ...) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 570 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 571 va_list ap; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 572 int ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 573 char *val; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 574 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 575 val = xenbus_read(t, dir, node, NULL); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 576 if (IS_ERR(val)) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 577 return PTR_ERR(val); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 578 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 579 va_start(ap, fmt); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 @580 ret = vsscanf(val, fmt, ap); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 581 va_end(ap); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 582 kfree(val); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 583 /* Distinctive errno. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 584 if (ret == 0) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 585 return -ERANGE; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 586 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 587 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 588 EXPORT_SYMBOL_GPL(xenbus_scanf); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 589 9c53a1792a5e6c Juergen Gross 2016-10-31 590 /* Read an (optional) unsigned value. */ 9c53a1792a5e6c Juergen Gross 2016-10-31 591 unsigned int xenbus_read_unsigned(const char *dir, const char *node, 9c53a1792a5e6c Juergen Gross 2016-10-31 592 unsigned int default_val) 9c53a1792a5e6c Juergen Gross 2016-10-31 593 { 9c53a1792a5e6c Juergen Gross 2016-10-31 594 unsigned int val; 9c53a1792a5e6c Juergen Gross 2016-10-31 595 int ret; 9c53a1792a5e6c Juergen Gross 2016-10-31 596 9c53a1792a5e6c Juergen Gross 2016-10-31 597 ret = xenbus_scanf(XBT_NIL, dir, node, "%u", &val); 9c53a1792a5e6c Juergen Gross 2016-10-31 598 if (ret <= 0) 9c53a1792a5e6c Juergen Gross 2016-10-31 599 val = default_val; 9c53a1792a5e6c Juergen Gross 2016-10-31 600 9c53a1792a5e6c Juergen Gross 2016-10-31 601 return val; 9c53a1792a5e6c Juergen Gross 2016-10-31 602 } 9c53a1792a5e6c Juergen Gross 2016-10-31 603 EXPORT_SYMBOL_GPL(xenbus_read_unsigned); 9c53a1792a5e6c Juergen Gross 2016-10-31 604 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 605 /* Single printf and write: returns -errno or 0. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 606 int xenbus_printf(struct xenbus_transaction t, 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 607 const char *dir, const char *node, const char *fmt, ...) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 608 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 609 va_list ap; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 610 int ret; a800651e889300 Ian Campbell 2012-01-04 611 char *buf; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 612 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 613 va_start(ap, fmt); a800651e889300 Ian Campbell 2012-01-04 614 buf = kvasprintf(GFP_NOIO | __GFP_HIGH, fmt, ap); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 615 va_end(ap); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 616 a800651e889300 Ian Campbell 2012-01-04 617 if (!buf) a800651e889300 Ian Campbell 2012-01-04 618 return -ENOMEM; a800651e889300 Ian Campbell 2012-01-04 619 a800651e889300 Ian Campbell 2012-01-04 620 ret = xenbus_write(t, dir, node, buf); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 621 a800651e889300 Ian Campbell 2012-01-04 622 kfree(buf); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 623 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 624 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 625 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 626 EXPORT_SYMBOL_GPL(xenbus_printf); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 627 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 628 /* Takes tuples of names, scanf-style args, and void **, NULL terminated. */ 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 629 int xenbus_gather(struct xenbus_transaction t, const char *dir, ...) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 630 { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 631 va_list ap; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 632 const char *name; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 633 int ret = 0; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 634 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 635 va_start(ap, dir); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 636 while (ret == 0 && (name = va_arg(ap, char *)) != NULL) { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 637 const char *fmt = va_arg(ap, char *); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 638 void *result = va_arg(ap, void *); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 639 char *p; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 640 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 641 p = xenbus_read(t, dir, name, NULL); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 642 if (IS_ERR(p)) { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 643 ret = PTR_ERR(p); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 644 break; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 645 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 646 if (fmt) { 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 @647 if (sscanf(p, fmt, result) == 0) 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 648 ret = -EINVAL; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 649 kfree(p); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 650 } else 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 651 *(char **)result = p; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 652 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 653 va_end(ap); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 654 return ret; 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 655 } 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 656 EXPORT_SYMBOL_GPL(xenbus_gather); 4bac07c993d034 Jeremy Fitzhardinge 2007-07-17 657 :::::: The code at line 580 was first introduced by commit :::::: 4bac07c993d03434ea902d3d4290d9e45944b66c xen: add the Xenbus sysfs and virtual device hotplug driver :::::: TO: Jeremy Fitzhardinge <jer...@xensource.com> :::::: CC: Jeremy Fitzhardinge <jer...@goop.org> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
