Branch: refs/heads/master Home: https://github.com/lxc/lxc Commit: cf0f7aba41f5a7475ca5755f1a3f6f7ceca41336 https://github.com/lxc/lxc/commit/cf0f7aba41f5a7475ca5755f1a3f6f7ceca41336 Author: Evgeny Vereshchagin <evv...@ya.ru> Date: 2021-03-28 (Sun, 28 Mar 2021)
Changed paths: M .github/workflows/cifuzz.yml Log Message: ----------- cifuzz: turn on MSan Signed-off-by: Evgeny Vereshchagin <evv...@ya.ru> Commit: f6727edbf7af86f4373f0c750c836e3a8f1d23d9 https://github.com/lxc/lxc/commit/f6727edbf7af86f4373f0c750c836e3a8f1d23d9 Author: Evgeny Vereshchagin <evv...@ya.ru> Date: 2021-03-28 (Sun, 28 Mar 2021) Changed paths: M src/lxc/string_utils.c Log Message: ----------- string_utils: work around an MSan false positive MSan doesn't instrument stpncpy (https://github.com/google/sanitizers/issues/926), which causes the fuzzer to fail with: ``` $ cat ../minimized-from-740f56329efc60eab59b8194132b712a873e88a3 lxc.console.size=123 $ ./out/fuzz-lxc-config-read ../minimized-from-740f56329efc60eab59b8194132b712a873e88a3 INFO: Seed: 3561494591 INFO: Loaded 1 modules (18795 inline 8-bit counters): 18795 [0x866b98, 0x86b503), INFO: Loaded 1 PC tables (18795 PCs): 18795 [0x86b508,0x8b4bb8), ./out/fuzz-lxc-config-read: Running 1 inputs 1 time(s) each. Running: ../minimized-from-740f56329efc60eab59b8194132b712a873e88a3 ==850885==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x6b3e7f in parse_byte_size_string /home/vagrant/lxc/src/lxc/string_utils.c:912:6 #1 0x550991 in set_config_console_size /home/vagrant/lxc/src/lxc/confile.c:2483:8 #2 0x5346e2 in parse_line /home/vagrant/lxc/src/lxc/confile.c:2962:9 #3 0x64b3cd in lxc_file_for_each_line_mmap /home/vagrant/lxc/src/lxc/parse.c:125:9 #4 0x53340c in lxc_config_read /home/vagrant/lxc/src/lxc/confile.c:3039:9 #5 0x4e7ec2 in LLVMFuzzerTestOneInput /home/vagrant/lxc/src/tests/fuzz-lxc-config-read.c:23:2 #6 0x44ad2c in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/home/vagrant/lxc/out/fuzz-lxc-config-read+0x44ad2c) #7 0x42ca4d in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/home/vagrant/lxc/out/fuzz-lxc-config-read+0x42ca4d) #8 0x433af0 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/home/vagrant/lxc/out/fuzz-lxc-config-read+0x433af0) #9 0x423ff6 in main (/home/vagrant/lxc/out/fuzz-lxc-config-read+0x423ff6) #10 0x7f79bdc89081 in __libc_start_main (/lib64/libc.so.6+0x27081) #11 0x42402d in _start (/home/vagrant/lxc/out/fuzz-lxc-config-read+0x42402d) Uninitialized value was created by an allocation of 'dup' in the stack frame of function 'parse_byte_size_string' #0 0x6b3330 in parse_byte_size_string /home/vagrant/lxc/src/lxc/string_utils.c:901 SUMMARY: MemorySanitizer: use-of-uninitialized-value /home/vagrant/lxc/src/lxc/string_utils.c:912:6 in parse_byte_size_string Exiting ``` Closes https://oss-fuzz.com/testcase-detail/5829890470445056 Signed-off-by: Evgeny Vereshchagin <evv...@ya.ru> Commit: 86624ee4a5b2c497c3346802c302bf5c9ec5140a https://github.com/lxc/lxc/commit/86624ee4a5b2c497c3346802c302bf5c9ec5140a Author: Christian Brauner <christian.brau...@ubuntu.com> Date: 2021-03-29 (Mon, 29 Mar 2021) Changed paths: M .github/workflows/cifuzz.yml M src/lxc/string_utils.c Log Message: ----------- Merge pull request #3746 from evverx/CIFuzz-unblock-msan CIFuzz: turn on MSan Compare: https://github.com/lxc/lxc/compare/be43adcda979...86624ee4a5b2 _______________________________________________ lxc-devel mailing list lxc-devel@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-devel