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================================================================== BUG: KMSAN: uninit-value in kick_process+0x130/0x180 kernel/sched/core.c:1445 CPU: 1 PID: 6536 Comm: udevd Not tainted 4.17.0+ #8 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1122 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620 kick_process+0x130/0x180 kernel/sched/core.c:1445 set_notify_resume include/linux/tracehook.h:165 [inline] task_work_add+0x2cc/0x300 kernel/task_work.c:40 fput+0x146/0x2e0 fs/file_table.c:270 filp_close+0x27b/0x2d0 fs/open.c:1184 __close_fd+0x47b/0x4d0 fs/file.c:635 __do_sys_close fs/open.c:1197 [inline] __se_sys_close fs/open.c:1195 [inline] __x64_sys_close+0x90/0x160 fs/open.c:1195 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f51a68132b0 RSP: 002b:00007ffd56423368 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000001d39250 RCX: 00007f51a68132b0 RDX: 00007ffd564265c0 RSI: 0000000000000002 RDI: 0000000000000007 RBP: 0000000000625500 R08: 0000000000000001 R09: 00000000000362fc R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd56423440 R13: 0000000000000001 R14: 00007ffd564233d4 R15: 0000000001d39250 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline] kmsan_save_stack mm/kmsan/kmsan.c:294 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:686 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464 __set_task_cpu kernel/sched/sched.h:1296 [inline] set_task_cpu+0x6e2/0x7d0 kernel/sched/core.c:1199 try_to_wake_up+0x10af/0x2260 kernel/sched/core.c:2063 default_wake_function+0x92/0xb0 kernel/sched/core.c:3762 __wake_up_common kernel/sched/wait.c:90 [inline] __wake_up_locked+0x21e/0x380 kernel/sched/wait.c:152 ep_poll_callback+0xd7c/0x11c0 fs/eventpoll.c:1197 __wake_up_common+0x45a/0xa50 kernel/sched/wait.c:90 __wake_up_common_lock+0x196/0x370 kernel/sched/wait.c:119 __wake_up_sync_key+0xcf/0x120 kernel/sched/wait.c:197 pipe_release+0x2cc/0x5a0 fs/pipe.c:571 __fput+0x458/0xa30 fs/file_table.c:209 ____fput+0x37/0x40 fs/file_table.c:243 task_work_run+0x22e/0x2b0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x110e/0x3930 kernel/exit.c:867 do_group_exit+0x1a0/0x360 kernel/exit.c:970 __do_sys_exit_group+0x21/0x30 kernel/exit.c:981 __se_sys_exit_group+0x14/0x20 kernel/exit.c:979 __x64_sys_exit_group+0x4c/0x50 kernel/exit.c:979 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Local variable description: ----wait.i@do_epoll_wait Variable was created at: do_epoll_wait+0x10c/0x1770 fs/eventpoll.c:2158 __do_sys_epoll_wait fs/eventpoll.c:2201 [inline] __se_sys_epoll_wait fs/eventpoll.c:2198 [inline] __x64_sys_epoll_wait+0x116/0x170 fs/eventpoll.c:2198 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018/06/17 01:50 | https://github.com/google/kmsan.git master | 88e0e95b30f1 | 27c5f59f | .config | console log | report | syz | ci-upstream-kmsan-gce | ||||
| 2018/05/16 00:42 | https://github.com/google/kmsan.git master | 06b2df0593a8 | 68ce85f1 | .config | console log | report | syz | ci-upstream-kmsan-gce | ||||
| 2018/05/15 00:50 | https://github.com/google/kmsan.git master | 450487484278 | d2284dda | .config | console log | report | syz | ci-upstream-kmsan-gce | ||||
| 2018/06/26 14:02 | https://github.com/google/kmsan.git master | 123906095e30 | 089f1181 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/06/23 06:19 | https://github.com/google/kmsan.git master | 123906095e30 | 89d2e600 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/06/21 03:42 | https://github.com/google/kmsan.git master | 123906095e30 | 095ef806 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/06/14 08:15 | https://github.com/google/kmsan.git master | 81c310582f0e | 27c5f59f | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/06/01 14:03 | https://github.com/google/kmsan.git master | 8fc8ecd1c58a | 2f93b54f | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/31 12:10 | https://github.com/google/kmsan.git master | 8fc8ecd1c58a | 2f93b54f | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/28 14:12 | https://github.com/google/kmsan.git master | 1b9cd4eccac9 | f48c20b8 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/26 10:13 | https://github.com/google/kmsan.git master | 1b9cd4eccac9 | f48c20b8 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/24 10:10 | https://github.com/google/kmsan.git master | 1b9cd4eccac9 | f48c20b8 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/19 14:40 | https://github.com/google/kmsan.git master | 9f127b7ceaf7 | 849705db | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/16 22:18 | https://github.com/google/kmsan.git master | 314993d1ef28 | a367c1d7 | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/16 09:46 | https://github.com/google/kmsan.git master | 06b2df0593a8 | 75b2448a | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/15 07:14 | https://github.com/google/kmsan.git master | 450487484278 | d2284dda | .config | console log | report | ci-upstream-kmsan-gce | |||||
| 2018/05/03 06:50 | https://github.com/google/kmsan.git master | d2d741e5d189 | 9ce14f4b | .config | console log | report | ci-upstream-kmsan-gce |