Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported |
---|---|---|---|---|---|---|
general protection fault in io_poll_double_wake io-uring fs | C | done | 8 | 1449d | 1477d |
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Title | Replies (including bot) | Last reply |
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possible deadlock in io_poll_double_wake | 2 (6) | 2020/08/15 18:15 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | possible deadlock in io_poll_double_wake (2) io-uring fs | C | error | error | 431 | 1240d | 1432d | 20/27 | fixed on 2021/04/09 19:46 |
upstream | possible deadlock in io_poll_double_wake (3) io-uring fs | C | error | done | 703 | 962d | 1236d | 20/27 | fixed on 2022/03/08 16:11 |
============================================ WARNING: possible recursive locking detected 5.8.0-syzkaller #0 Not tainted -------------------------------------------- syz-executor337/6845 is trying to acquire lock: ffff8880a1ff8530 (&tty->write_wait){-.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffff8880a1ff8530 (&tty->write_wait){-.-.}-{2:2}, at: io_poll_double_wake+0x12a/0x3f0 fs/io_uring.c:4599 but task is already holding lock: ffff8880a1ff8530 (&tty->write_wait){-.-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&tty->write_wait); lock(&tty->write_wait); *** DEADLOCK *** May be due to missing lock nesting notation 4 locks held by syz-executor337/6845: #0: ffff8880a1ff8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267 #1: ffff8880a1ff82e8 (&tty->termios_rwsem){++++}-{3:3}, at: tty_set_termios+0xec/0x840 drivers/tty/tty_ioctl.c:328 #2: ffff8880a1ff8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref+0x1d/0x80 drivers/tty/tty_ldisc.c:288 #3: ffff8880a1ff8530 (&tty->write_wait){-.-.}-{2:2}, at: __wake_up_common_lock+0xb4/0x130 kernel/sched/wait.c:122 stack backtrace: CPU: 1 PID: 6845 Comm: syz-executor337 Not tainted 5.8.0-syzkaller #0 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+0x18f/0x20d lib/dump_stack.c:118 print_deadlock_bug kernel/locking/lockdep.c:2391 [inline] check_deadlock kernel/locking/lockdep.c:2432 [inline] validate_chain kernel/locking/lockdep.c:3202 [inline] __lock_acquire.cold+0x115/0x396 kernel/locking/lockdep.c:4426 lock_acquire+0x1f1/0xad0 kernel/locking/lockdep.c:5005 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] io_poll_double_wake+0x12a/0x3f0 fs/io_uring.c:4599 __wake_up_common+0x147/0x650 kernel/sched/wait.c:93 __wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:123 n_tty_set_termios+0x73d/0x1010 drivers/tty/n_tty.c:1874 tty_set_termios+0x5eb/0x840 drivers/tty/tty_ioctl.c:341 set_termios.part.0+0x2be/0x4d0 drivers/tty/tty_ioctl.c:414 set_termios drivers/tty/tty_ioctl.c:368 [inline] tty_mode_ioctl+0x899/0xb60 drivers/tty/tty_ioctl.c:745 n_tty_ioctl_helper+0x55/0x3a0 drivers/tty/tty_ioctl.c:940 n_tty_ioctl+0x56/0x370 drivers/tty/n_tty.c:2466 tty_ioctl+0x10c5/0x15f0 drivers/tty/tty_io.c:2665 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4405b9 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffddb7dcb28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00000000004405b9 RDX: 0000000020000000 RSI: 0000000000005404 RDI: 0000000000000003 RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401e20 R13: 0000000000401eb0 R14: 0000000000000000 R15: 0000000000000000
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/08/16 01:55 | upstream | c9c9735c46f5 | 424dd8e7 | .config | console log | report | syz | C | ci-upstream-kasan-gce-selinux-root | |||
2020/08/15 18:14 | upstream | c9c9735c46f5 | 424dd8e7 | .config | console log | report | syz | C | ci-upstream-kasan-gce-smack-root | |||
2020/09/12 15:11 | upstream | 729e3d091984 | ce441f06 | .config | console log | report | syz | ci-upstream-kasan-gce-selinux-root | ||||
2020/09/11 14:07 | upstream | 581cb3a26baf | adfb8b4e | .config | console log | report | syz | ci-upstream-kasan-gce-root | ||||
2020/09/07 15:56 | upstream | a8205e310011 | abf9ba4f | .config | console log | report | syz | ci-upstream-kasan-gce-smack-root | ||||
2020/09/08 14:45 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2020/09/08 14:14 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2020/09/08 12:05 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2020/09/08 10:25 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2020/09/08 09:16 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-root | |||||
2020/09/08 08:29 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2020/09/07 18:59 | upstream | f4d51dffc6c0 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-selinux-root | |||||
2020/09/07 15:34 | upstream | a8205e310011 | abf9ba4f | .config | console log | report | ci-upstream-kasan-gce-smack-root | |||||
2020/08/15 17:55 | upstream | c9c9735c46f5 | 424dd8e7 | .config | console log | report | ci-upstream-kasan-gce-smack-root | |||||
2020/09/08 15:08 | linux-next | 7a6956579ce6 | abf9ba4f | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2020/09/08 10:14 | linux-next | 7a6956579ce6 | abf9ba4f | .config | console log | report | ci-upstream-linux-next-kasan-gce-root | |||||
2020/09/06 14:42 | linux-next | 7a6956579ce6 | abf9ba4f | .config | console log | report | ci-upstream-linux-next-kasan-gce-root |