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================================================================== BUG: KCSAN: data-race in fasync_remove_entry / kill_fasync write to 0xffff8881377de958 of 8 bytes by task 13996 on cpu 0: fasync_remove_entry+0xd5/0x140 fs/fcntl.c:895 fasync_helper+0x92/0xc0 fs/fcntl.c:994 sock_fasync+0x5c/0xc0 net/socket.c:1339 __fput+0x4dd/0x520 fs/file_table.c:277 ____fput+0x11/0x20 fs/file_table.c:313 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff8881377de958 of 8 bytes by task 13988 on cpu 1: kill_fasync+0x20/0x160 fs/fcntl.c:1033 sock_wake_async+0xea/0x100 sk_wake_async include/net/sock.h:2413 [inline] unix_release_sock+0x36c/0x680 net/unix/af_unix.c:570 unix_release+0x4e/0x70 net/unix/af_unix.c:949 __sock_release net/socket.c:649 [inline] sock_close+0x6c/0x150 net/socket.c:1314 __fput+0x295/0x520 fs/file_table.c:280 ____fput+0x11/0x20 fs/file_table.c:313 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0xffff888104dad3c0 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 13988 Comm: syz-executor.3 Not tainted 5.16.0-rc5-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/12/14 09:58 | upstream | 5472f14a3742 | 5d14b1ea | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in fasync_remove_entry / kill_fasync | |||
2021/11/11 19:17 | upstream | debe436e77c7 | 75b04091 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in fasync_remove_entry / kill_fasync | |||
2021/11/10 23:44 | upstream | 89d714ab6043 | 75b04091 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in fasync_remove_entry / kill_fasync | |||
2021/11/06 01:58 | upstream | fe91c4725aee | 4c1be0be | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in fasync_remove_entry / kill_fasync |