Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/04/30 | linux-6.1.y (ToT) | dcbc050cb0d3 | C | [report] possible deadlock in __wake_up |
2024/04/30 | upstream (ToT) | 50dffbf77180 | C | Didn't crash |
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Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/04/30 | linux-6.1.y (ToT) | dcbc050cb0d3 | C | [report] possible deadlock in __wake_up |
2024/04/30 | upstream (ToT) | 50dffbf77180 | C | Didn't crash |
============================================ WARNING: possible recursive locking detected 6.1.83-syzkaller #0 Not tainted -------------------------------------------- syz-executor285/3540 is trying to acquire lock: ffff888029235378 (&ctx->cq_wait){....}-{2:2}, at: __wake_up_common_lock kernel/sched/wait.c:137 [inline] ffff888029235378 (&ctx->cq_wait){....}-{2:2}, at: __wake_up+0xfd/0x1c0 kernel/sched/wait.c:160 but task is already holding lock: ffff888029235378 (&ctx->cq_wait){....}-{2:2}, at: __wake_up_common_lock kernel/sched/wait.c:137 [inline] ffff888029235378 (&ctx->cq_wait){....}-{2:2}, at: __wake_up+0xfd/0x1c0 kernel/sched/wait.c:160 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ctx->cq_wait); lock(&ctx->cq_wait); *** DEADLOCK *** May be due to missing lock nesting notation 2 locks held by syz-executor285/3540: #0: ffff8880292350a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __do_sys_io_uring_enter io_uring/io_uring.c:3280 [inline] #0: ffff8880292350a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __se_sys_io_uring_enter+0x336/0x2750 io_uring/io_uring.c:3213 #1: ffff888029235378 (&ctx->cq_wait){....}-{2:2}, at: __wake_up_common_lock kernel/sched/wait.c:137 [inline] #1: ffff888029235378 (&ctx->cq_wait){....}-{2:2}, at: __wake_up+0xfd/0x1c0 kernel/sched/wait.c:160 stack backtrace: CPU: 1 PID: 3540 Comm: syz-executor285 Not tainted 6.1.83-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_deadlock_bug kernel/locking/lockdep.c:2983 [inline] check_deadlock kernel/locking/lockdep.c:3026 [inline] validate_chain+0x4711/0x5950 kernel/locking/lockdep.c:3812 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 __wake_up_common_lock kernel/sched/wait.c:137 [inline] __wake_up+0xfd/0x1c0 kernel/sched/wait.c:160 __io_cqring_wake io_uring/io_uring.h:224 [inline] io_req_local_work_add io_uring/io_uring.c:1117 [inline] __io_req_task_work_add+0x3c7/0x5c0 io_uring/io_uring.c:1128 io_poll_wake+0x351/0x430 io_uring/poll.c:465 __wake_up_common+0x2a0/0x4e0 kernel/sched/wait.c:107 __wake_up_common_lock kernel/sched/wait.c:138 [inline] __wake_up+0x11a/0x1c0 kernel/sched/wait.c:160 io_queue_sqe io_uring/io_uring.c:1910 [inline] io_submit_sqe io_uring/io_uring.c:2162 [inline] io_submit_sqes+0xf29/0x1e70 io_uring/io_uring.c:2275 __do_sys_io_uring_enter io_uring/io_uring.c:3281 [inline] __se_sys_io_uring_enter+0x341/0x2750 io_uring/io_uring.c:3213 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f7acc82a529 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc546b11c8 EFLAGS: 00000216 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7acc82a529 RDX: 0000000000000000 RSI: 00000000000053f8 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 0000000000000000 R13: 00007ffc546b1448 R14: 0000000000000001 R15: 0000000000000001 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/04/01 17:39 | linux-6.1.y | e5cd595e23c1 | 6baf5069 | .config | console log | report | syz | C | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in __wake_up | |
2024/04/06 19:52 | linux-6.1.y | 347385861c50 | ca620dd8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in __wake_up | ||
2024/04/03 18:46 | linux-6.1.y | 347385861c50 | 51c4dcff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in __wake_up | ||
2024/04/01 17:08 | linux-6.1.y | e5cd595e23c1 | 6baf5069 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in __wake_up | ||
2024/04/01 17:04 | linux-6.1.y | e5cd595e23c1 | 6baf5069 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan | possible deadlock in __wake_up | ||
2024/05/12 00:23 | linux-6.1.y | 909ba1f1b414 | 9026e142 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in __wake_up | ||
2024/04/24 15:34 | linux-6.1.y | 6741e066ec76 | 21339d7b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-1-kasan-arm64 | possible deadlock in __wake_up |