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================================================================== BUG: KCSAN: data-race in fsnotify / fsnotify_detach_mark write to 0xffff888125664674 of 4 bytes by task 27523 on cpu 1: fsnotify_detach_mark+0xa4/0x1d0 fs/notify/mark.c:386 fsnotify_clear_marks_by_group+0x293/0x320 fs/notify/mark.c:757 fsnotify_destroy_group+0x5a/0x190 fs/notify/group.c:60 fanotify_release+0x20e/0x240 fs/notify/fanotify/fanotify_user.c:555 __fput+0x1e9/0x500 fs/file_table.c:280 ____fput+0x1b/0x30 fs/file_table.c:313 task_work_run+0xba/0x120 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x2ae/0x2c0 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x38b/0x3b0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888125664674 of 4 bytes by task 27525 on cpu 0: send_to_group fs/notify/fsnotify.c:202 [inline] fsnotify+0x417/0x830 fs/notify/fsnotify.c:366 fsnotify_file include/linux/fsnotify.h:78 [inline] fsnotify_modify include/linux/fsnotify.h:257 [inline] do_iter_write fs/read_write.c:1003 [inline] do_iter_write+0x212/0x3a0 fs/read_write.c:980 vfs_iter_write+0x56/0x80 fs/read_write.c:1040 iter_file_splice_write+0x530/0x830 fs/splice.c:760 do_splice_from fs/splice.c:863 [inline] direct_splice_actor+0x97/0xb0 fs/splice.c:1037 splice_direct_to_actor+0x22f/0x540 fs/splice.c:992 do_splice_direct+0x152/0x1d0 fs/splice.c:1080 do_sendfile+0x380/0x800 fs/read_write.c:1521 __do_sys_sendfile64 fs/read_write.c:1576 [inline] __se_sys_sendfile64 fs/read_write.c:1568 [inline] __x64_sys_sendfile64+0xb8/0x140 fs/read_write.c:1568 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 27525 Comm: syz-executor.5 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020/04/24 10:10 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 03d97a1b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2020/03/06 02:52 | https://github.com/google/ktsan.git kcsan | 766d004d1b85 | b655d91b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2020/02/24 19:02 | https://github.com/google/ktsan.git kcsan | 766d004d1b85 | 1253d6f0 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2020/01/13 09:50 | https://github.com/google/ktsan.git kcsan | 245a43005292 | 53faa9fe | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/12/23 12:49 | https://github.com/google/ktsan.git kcsan | 245a43005292 | be5c2c81 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
| 2019/11/30 04:37 | https://github.com/google/ktsan.git kcsan | ef798c30ba4e | 3a75be00 | .config | console log | report | ci2-upstream-kcsan-gce |