CC: l...@lists.linux.dev CC: kbuild-...@lists.01.org BCC: l...@intel.com CC: linux-ker...@vger.kernel.org TO: John Ogness <john.ogn...@linutronix.de> CC: Sebastian Andrzej Siewior <bige...@linutronix.de>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-5.17.y-rt-rebase head: 12b31505d173e33e63ab2dd198cb7d92433184fd commit: fd6bde1ae126448aa36d5bf26ed2ae997009645b [15/117] printk: add infrastucture for atomic consoles :::::: branch date: 7 days ago :::::: commit date: 7 days ago config: riscv-randconfig-c006-20220320 (https://download.01.org/0day-ci/archive/20220321/202203211057.yget3h0w-...@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 85e9b2687a13d1908aa86d1b89c5ce398a06cd39) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git/commit/?id=fd6bde1ae126448aa36d5bf26ed2ae997009645b git remote add rt-devel https://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git git fetch --no-tags rt-devel linux-5.17.y-rt-rebase git checkout fd6bde1ae126448aa36d5bf26ed2ae997009645b # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 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 >>) 2 warnings generated. Suppressed 2 warnings (2 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. 3 warnings generated. Suppressed 3 warnings (3 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. mm/compaction.c:93:2: warning: Assigned value is garbage or undefined [clang-analyzer-core.uninitialized.Assign] list_for_each_entry_safe(page, next, list, lru) { ^ include/linux/list.h:726:7: note: expanded from macro 'list_for_each_entry_safe' n = list_next_entry(pos, member); \ ^ include/linux/list.h:564:2: note: expanded from macro 'list_next_entry' list_entry((pos)->member.next, typeof(*(pos)), member) ^ include/linux/list.h:520:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^ include/linux/container_of.h:18:2: note: expanded from macro 'container_of' void *__mptr = (void *)(ptr); \ ^ mm/compaction.c:703:6: note: Assuming 'block_start_pfn' is >= field 'zone_start_pfn' if (block_start_pfn < cc->zone->zone_start_pfn) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/compaction.c:703:2: note: Taking false branch if (block_start_pfn < cc->zone->zone_start_pfn) ^ mm/compaction.c:707:9: note: Assuming 'pfn' is >= 'end_pfn' for (; pfn < end_pfn; pfn += isolated, ^~~~~~~~~~~~~ mm/compaction.c:707:2: note: Loop condition is false. Execution continues on line 749 for (; pfn < end_pfn; pfn += isolated, ^ mm/compaction.c:749:2: note: Calling 'split_map_pages' split_map_pages(&freelist); ^~~~~~~~~~~~~~~~~~~~~~~~~~ mm/compaction.c:93:2: note: Assigned value is garbage or undefined list_for_each_entry_safe(page, next, list, lru) { ^ include/linux/list.h:726:7: note: expanded from macro 'list_for_each_entry_safe' n = list_next_entry(pos, member); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/list.h:564:2: note: expanded from macro 'list_next_entry' list_entry((pos)->member.next, typeof(*(pos)), member) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/list.h:520:2: note: expanded from macro 'list_entry' container_of(ptr, type, member) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/container_of.h:18:2: note: expanded from macro 'container_of' void *__mptr = (void *)(ptr); \ ^ ~~~~~~~~~~~~~ Suppressed 6 warnings (2 in non-user code, 4 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 4 warnings generated. Suppressed 4 warnings (4 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 3 warnings generated. Suppressed 3 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 5 warnings generated. kernel/printk/printk.c:157:3: 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(devkmsg_log_str, "on"); ^~~~~~ kernel/printk/printk.c:157:3: 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(devkmsg_log_str, "on"); ^~~~~~ kernel/printk/printk.c:159:3: 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(devkmsg_log_str, "off"); ^~~~~~ kernel/printk/printk.c:159:3: 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(devkmsg_log_str, "off"); ^~~~~~ >> kernel/printk/printk.c:2900:2: warning: Value stored to 'seq' is never read >> [clang-analyzer-deadcode.DeadStores] seq = read_console_seq(con); ^ ~~~~~~~~~~~~~~~~~~~~~ kernel/printk/printk.c:2900:2: note: Value stored to 'seq' is never read seq = read_console_seq(con); ^ ~~~~~~~~~~~~~~~~~~~~~ Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 2 warnings generated. Suppressed 2 warnings (2 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. 3 warnings generated. Suppressed 3 warnings (3 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. 3 warnings generated. fs/btrfs/disk-io.c:3483:3: warning: Value stored to 'features' is never read [clang-analyzer-deadcode.DeadStores] features |= BTRFS_FEATURE_INCOMPAT_BIG_METADATA; ^ fs/btrfs/disk-io.c:3483:3: note: Value stored to 'features' is never read Suppressed 2 warnings (2 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. 3 warnings generated. fs/btrfs/transaction.c:1962:6: warning: Use of memory after it is freed [clang-analyzer-unix.Malloc] cur_trans->state >= TRANS_STATE_COMMIT_START || ^ include/linux/wait.h:343:6: note: expanded from macro 'wait_event' if (condition) \ ^~~~~~~~~ fs/btrfs/transaction.c:1955:2: note: Calling 'btrfs_end_transaction' btrfs_end_transaction(trans); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/transaction.c:1046:9: note: Calling '__btrfs_end_transaction' return __btrfs_end_transaction(trans, 0); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/transaction.c:1002:6: note: Assuming the condition is false if (refcount_read(&trans->use_count) > 1) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/transaction.c:1002:2: note: Taking false branch if (refcount_read(&trans->use_count) > 1) { ^ fs/btrfs/transaction.c:1015:6: note: Assuming the condition is false if (trans->type & __TRANS_FREEZABLE) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/transaction.c:1015:2: note: Taking false branch if (trans->type & __TRANS_FREEZABLE) ^ fs/btrfs/transaction.c:1018:10: note: Assuming 'cur_trans' is equal to field 'running_transaction' WARN_ON(cur_trans != info->running_transaction); ^ include/asm-generic/bug.h:166:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ fs/btrfs/transaction.c:1019:10: note: Assuming the condition is false WARN_ON(atomic_read(&cur_trans->num_writers) < 1); ^ include/asm-generic/bug.h:166:25: note: expanded from macro 'WARN_ON' int __ret_warn_on = !!(condition); \ ^~~~~~~~~ fs/btrfs/transaction.c:1024:2: note: Calling 'btrfs_put_transaction' btrfs_put_transaction(cur_trans); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/transaction.c:125:2: note: Assuming '__ret_warn_on' is not equal to 0 WARN_ON(refcount_read(&transaction->use_count) == 0); ^ include/asm-generic/bug.h:167:2: note: expanded from macro 'WARN_ON' unlikely(__ret_warn_on); \ ^~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:48:24: note: expanded from macro 'unlikely' # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:33:32: note: expanded from macro '__branch_check__' ______r = __builtin_expect(!!(x), expect); \ ^~~~ fs/btrfs/transaction.c:126:2: note: Taking true branch if (refcount_dec_and_test(&transaction->use_count)) { ^ fs/btrfs/transaction.c:127:3: note: Assuming the condition is false BUG_ON(!list_empty(&transaction->list)); ^ include/asm-generic/bug.h:161:36: note: expanded from macro 'BUG_ON' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:48:24: note: expanded from macro 'unlikely' # define unlikely(x) (__branch_check__(x, 0, __builtin_constant_p(x))) ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler.h:23:50: note: expanded from macro '__branch_check__' #define __branch_check__(x, expect, is_constant) ({ \ ^~~~~~~~~~~~~~~~~~~~~~~~ fs/btrfs/transaction.c:127:3: note: Taking false branch BUG_ON(!list_empty(&transaction->list)); ^ include/asm-generic/bug.h:161:32: note: expanded from macro 'BUG_ON' #define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0) ^ fs/btrfs/transaction.c:127:3: note: Loop condition is false. Exiting loop BUG_ON(!list_empty(&transaction->list)); ^ include/asm-generic/bug.h:161:27: note: expanded from macro 'BUG_ON' vim +/seq +2900 kernel/printk/printk.c fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2858 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2859 /* 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2860 * Print one record for the given console. The record printed is whatever 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2861 * record is the next available record for the given console. ^1da177e4c3f41 kernel/printk.c Linus Torvalds 2005-04-16 2862 * 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2863 * @text is a buffer of size CONSOLE_LOG_MAX. 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2864 * 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2865 * If extended messages should be printed, @ext_text is a buffer of size 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2866 * CONSOLE_EXT_LOG_MAX. Otherwise @ext_text must be NULL. 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2867 * 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2868 * If dropped messages should be printed, @dropped_text is a buffer of size 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2869 * DROPPED_TEXT_MAX. Otherwise @dropped_text must be NULL. 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2870 * fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2871 * @atomic_printing specifies if atomic printing should be used. fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2872 * 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2873 * Requires the console_lock. ^1da177e4c3f41 kernel/printk.c Linus Torvalds 2005-04-16 2874 * 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2875 * Returns false if the given console has no next record to print, otherwise 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2876 * true. ^1da177e4c3f41 kernel/printk.c Linus Torvalds 2005-04-16 2877 * 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2878 * @handover will be set to true if a printk waiter has taken over the 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2879 * console_lock, in which case the caller is no longer holding the 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2880 * console_lock. Otherwise it is set to false. A NULL pointer may be provided 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2881 * to disable allowing the console_lock to be taken over by a printk waiter. ^1da177e4c3f41 kernel/printk.c Linus Torvalds 2005-04-16 2882 */ 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2883 static bool console_emit_next_record(struct console *con, char *text, char *ext_text, fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2884 char *dropped_text, bool atomic_printing, fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2885 bool *handover) ^1da177e4c3f41 kernel/printk.c Linus Torvalds 2005-04-16 2886 { 896fbe20b4e233 kernel/printk/printk.c John Ogness 2020-07-09 2887 struct printk_info info; 896fbe20b4e233 kernel/printk/printk.c John Ogness 2020-07-09 2888 struct printk_record r; 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2889 unsigned long flags; 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2890 bool allow_handover; 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2891 char *write_text; 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2892 size_t len; fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2893 u64 seq; 78944e549d3667 kernel/printk.c Antonino A. Daplas 2006-08-05 2894 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2895 prb_rec_init_rd(&r, &info, text, CONSOLE_LOG_MAX); 896fbe20b4e233 kernel/printk/printk.c John Ogness 2020-07-09 2896 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2897 if (handover) 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2898 *handover = false; 7ff9554bb578ba kernel/printk.c Kay Sievers 2012-05-03 2899 fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 @2900 seq = read_console_seq(con); fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2901 fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2902 if (!prb_read_valid(prb, seq, &r)) 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2903 return false; 7ff9554bb578ba kernel/printk.c Kay Sievers 2012-05-03 2904 fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2905 if (seq != r.info->seq) { fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2906 atomic_long_add((unsigned long)(r.info->seq - seq), &con->dropped); fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2907 write_console_seq(con, r.info->seq, atomic_printing); fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2908 seq = r.info->seq; 896fbe20b4e233 kernel/printk/printk.c John Ogness 2020-07-09 2909 } 896fbe20b4e233 kernel/printk/printk.c John Ogness 2020-07-09 2910 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2911 /* Skip record that has level above the console loglevel. */ 896fbe20b4e233 kernel/printk/printk.c John Ogness 2020-07-09 2912 if (suppress_message_printing(r.info->level)) { fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2913 write_console_seq(con, seq + 1, atomic_printing); 084681d14e429c kernel/printk.c Kay Sievers 2012-06-28 2914 goto skip; 084681d14e429c kernel/printk.c Kay Sievers 2012-06-28 2915 } 649e6ee33f73ba kernel/printk.c Kay Sievers 2012-05-10 2916 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2917 if (ext_text) { 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2918 write_text = ext_text; 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2919 len = info_print_ext_header(ext_text, CONSOLE_EXT_LOG_MAX, r.info); 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2920 len += msg_print_ext_body(ext_text + len, CONSOLE_EXT_LOG_MAX - len, 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2921 &r.text_buf[0], r.info->text_len, &r.info->dev_info); 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2922 } else { 39faa1897af534 kernel/printk/printk.c John Ogness 2022-02-07 2923 write_text = text; 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2924 len = record_print_text(&r, console_msg_format & MSG_FORMAT_SYSLOG, printk_time); 6fe29354befe4c kernel/printk/printk.c Tejun Heo 2015-06-25 2925 } 7ff9554bb578ba kernel/printk.c Kay Sievers 2012-05-03 2926 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2927 /* Handovers may only happen between trylock contexts. */ 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2928 allow_handover = (handover && atomic_read(&console_lock_count) == -1); 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2929 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2930 if (allow_handover) { dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2931) /* dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2932) * While actively printing out messages, if another printk() dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2933) * were to occur on another CPU, it may wait for this one to dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2934) * finish. This task can not be preempted if there is a dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2935) * waiter waiting to take over. 93d102f094be9b kernel/printk/printk.c John Ogness 2021-07-15 2936 * 93d102f094be9b kernel/printk/printk.c John Ogness 2021-07-15 2937 * Interrupts are disabled because the hand over to a waiter 93d102f094be9b kernel/printk/printk.c John Ogness 2021-07-15 2938 * must not be interrupted until the hand over is completed 93d102f094be9b kernel/printk/printk.c John Ogness 2021-07-15 2939 * (@console_waiter is cleared). dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2940) */ 93d102f094be9b kernel/printk/printk.c John Ogness 2021-07-15 2941 printk_safe_enter_irqsave(flags); c162d5b4338d72 kernel/printk/printk.c Petr Mladek 2018-01-12 2942 console_lock_spinning_enable(); 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2943 } dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2944) 81d68a96a39844 kernel/printk.c Steven Rostedt 2008-05-12 2945 stop_critical_timings(); /* don't trace print latency */ fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2946 call_console_driver(con, write_text, len, dropped_text, atomic_printing); 81d68a96a39844 kernel/printk.c Steven Rostedt 2008-05-12 2947 start_critical_timings(); dbdda842fe96f8 kernel/printk/printk.c Steven Rostedt (VMware 2018-01-10 2948) fd6bde1ae12644 kernel/printk/printk.c John Ogness 2022-02-04 2949 write_console_seq(con, seq + 1, atomic_printing); 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2950 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2951 if (allow_handover) { 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2952 *handover = console_lock_spinning_disable_and_check(); c162d5b4338d72 kernel/printk/printk.c Petr Mladek 2018-01-12 2953 printk_safe_exit_irqrestore(flags); 635b43f09ca747 kernel/printk/printk.c John Ogness 2022-02-07 2954 } 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2955 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2956 printk_delay(r.info->level); 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2957 skip: 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2958 return true; 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2959 } 4d8b5793c22f45 kernel/printk/printk.c John Ogness 2022-02-07 2960 -- 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
