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INFO: task kworker/u4:4:1154 blocked for more than 143 seconds. Not tainted 5.15.0-rc7-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:4 state:D stack:23240 pid: 1154 ppid: 2 flags:0x00004000 Workqueue: events_unbound io_ring_exit_work Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb44/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425 __mutex_lock_common kernel/locking/mutex.c:669 [inline] __mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729 io_uring_try_cancel_iowq fs/io_uring.c:9567 [inline] io_uring_try_cancel_requests+0x7d1/0xc30 fs/io_uring.c:9597 io_ring_exit_work+0x137/0x19a0 fs/io_uring.c:9397 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b981b20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446 3 locks held by kworker/u4:4/1154: #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline] #0: ffff888010c69138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268 #1: ffffc90004dffdb0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272 #2: ffff888079b800a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_try_cancel_iowq fs/io_uring.c:9567 [inline] #2: ffff888079b800a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_try_cancel_requests+0x7d1/0xc30 fs/io_uring.c:9597 1 lock held by in:imklog/6239: #0: ffff88801d1320f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990 1 lock held by syz-executor741/6562: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6562 Comm: syz-executor741 Not tainted 5.15.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__orc_find+0x8f/0xf0 arch/x86/kernel/unwind_orc.c:49 Code: d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 d8 48 39 c1 73 b0 4c 8d 63 fc <49> 39 ec 73 b3 4d 29 ee 49 c1 fe 02 4b 8d 04 76 48 8d 04 46 48 83 RSP: 0018:ffffc90002cdf6c8 EFLAGS: 00000283 RAX: ffffffff814cffd7 RBX: ffffffff8d7c3a78 RCX: ffffffff814cff4c RDX: 0000000000000000 RSI: ffffffff8dea44c2 RDI: ffffffff8d7c3a68 RBP: ffffffff8d7c3a68 R08: 0000000000000000 R09: ffffffff8dea44c2 R10: fffff5200059bf08 R11: 0000000000086089 R12: ffffffff8d7c3a74 R13: ffffffff8d7c3a68 R14: ffffffff8d7c3a68 R15: dffffc0000000000 FS: 00007fbd0833d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd083e0ff8 CR3: 00000000720b7000 CR4: 0000000000350ee0 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:173 [inline] unwind_next_frame+0x32a/0x1ce0 arch/x86/kernel/unwind_orc.c:443 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa4/0xd0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:591 [inline] io_add_buffers fs/io_uring.c:4382 [inline] io_provide_buffers fs/io_uring.c:4416 [inline] io_issue_sqe+0x3289/0x7180 fs/io_uring.c:6728 __io_queue_sqe+0x90/0xb30 fs/io_uring.c:6957 io_req_task_submit+0xbf/0x1b0 fs/io_uring.c:2231 tctx_task_work+0x189/0x6c0 fs/io_uring.c:2156 task_work_run+0xdd/0x1a0 kernel/task_work.c:164 tracehook_notify_signal include/linux/tracehook.h:214 [inline] handle_signal_work kernel/entry/common.c:146 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x256/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fbd0838bd79 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 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:00007fbd0833d2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: 0000000000000800 RBX: 00007fbd08415408 RCX: 00007fbd0838bd79 RDX: 0000000000000000 RSI: 0000000000006019 RDI: 0000000000000003 RBP: 00007fbd08415400 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000001000 R13: 0000000000000003 R14: 00007fbd0833d400 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: d8 48 c1 fmuls -0x3f(%rax) 3: e8 03 42 0f b6 callq 0xb60f420b 8: 14 38 adc $0x38,%al a: 48 89 d8 mov %rbx,%rax d: 83 e0 07 and $0x7,%eax 10: 83 c0 03 add $0x3,%eax 13: 38 d0 cmp %dl,%al 15: 7c 04 jl 0x1b 17: 84 d2 test %dl,%dl 19: 75 48 jne 0x63 1b: 48 63 03 movslq (%rbx),%rax 1e: 48 01 d8 add %rbx,%rax 21: 48 39 c1 cmp %rax,%rcx 24: 73 b0 jae 0xffffffd6 26: 4c 8d 63 fc lea -0x4(%rbx),%r12 * 2a: 49 39 ec cmp %rbp,%r12 <-- trapping instruction 2d: 73 b3 jae 0xffffffe2 2f: 4d 29 ee sub %r13,%r14 32: 49 c1 fe 02 sar $0x2,%r14 36: 4b 8d 04 76 lea (%r14,%r14,2),%rax 3a: 48 8d 04 46 lea (%rsi,%rax,2),%rax 3e: 48 rex.W 3f: 83 .byte 0x83
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/10/28 12:11 | upstream | 1fc596a56b33 | be531bb4 | .config | console log | report | syz | C | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | ||
2021/12/09 06:39 | upstream | 2a987e65025e | a4a2a501 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/12/09 05:12 | upstream | 2a987e65025e | a4a2a501 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/12/04 10:10 | upstream | 12119cfa1052 | a617004c | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/30 18:00 | upstream | d58071a8a76d | 80270552 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/28 04:59 | upstream | 741392771338 | 63eeac02 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/26 03:45 | upstream | b501b85957de | 63eeac02 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/25 03:53 | upstream | 5f53fa508db0 | 545ab074 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/20 07:03 | upstream | 4c388a8e740d | 3a9d0024 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/18 17:34 | upstream | 42eb8fdac2fc | 31a30fc0 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/16 21:36 | upstream | 8ab774587903 | 600426bd | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/16 16:05 | upstream | 8ab774587903 | 600426bd | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/16 13:13 | upstream | 8ab774587903 | 600426bd | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/08 19:57 | upstream | e851dfae4371 | d29682f1 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/07 10:58 | upstream | 512b7931ad05 | 4c1be0be | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/06 10:26 | upstream | fe91c4725aee | 4c1be0be | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/04 02:38 | upstream | dcd68326d29b | 4c1be0be | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/31 08:55 | upstream | 119c85055d86 | 098b5d53 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/28 08:51 | upstream | 1fc596a56b33 | be531bb4 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/26 11:02 | upstream | c2b43854aad9 | c1132b49 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/26 03:55 | upstream | c2b43854aad9 | c1132b49 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/19 06:14 | upstream | 519d81956ee2 | 24dc29db | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/19 02:17 | upstream | 519d81956ee2 | 24dc29db | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/19 02:09 | upstream | 519d81956ee2 | 24dc29db | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/17 17:36 | upstream | d999ade1cc86 | 0c5d9412 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/17 07:16 | upstream | 304040fb4909 | 0c5d9412 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/14 04:05 | upstream | 348949d9a444 | 5462d470 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/10 13:50 | upstream | 7fd2bf83d59a | 838e7e2c | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/06 10:38 | upstream | f6274b06e326 | 0a63fd36 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/03 16:31 | upstream | 7b66f4393ad4 | db0f5787 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/03 07:12 | upstream | ab2a7a35c4e7 | db0f5787 | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/27 16:17 | upstream | 5816b3e6577e | 78494d16 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/27 06:41 | upstream | 996148ee05d0 | 78494d16 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/25 17:31 | upstream | 7d42e9818258 | 8cac236e | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/24 12:46 | upstream | f9e36107ec70 | 8cac236e | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/23 01:51 | upstream | cf1d2c3e7e2f | 8cac236e | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/19 11:00 | upstream | 93ff9f13be91 | 70b76c1d | .config | console log | report | info | ci-upstream-kasan-gce | INFO: task hung in io_uring_try_cancel_requests | |||
2021/12/04 15:35 | upstream | 12119cfa1052 | a617004c | .config | console log | report | info | ci-upstream-kasan-gce-386 | INFO: task hung in io_uring_try_cancel_requests | |||
2021/10/31 21:44 | upstream | 180eca540ae0 | 098b5d53 | .config | console log | report | info | ci-upstream-kasan-gce-386 | INFO: task hung in io_uring_try_cancel_requests | |||
2021/09/16 16:57 | upstream | ff1ffd71d5f0 | aae492f2 | .config | console log | report | info | ci-upstream-kasan-gce-386 | INFO: task hung in io_uring_try_cancel_requests | |||
2021/11/09 09:37 | linux-next | c8109c2ba35e | 8ab17e57 | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | INFO: task hung in io_uring_try_cancel_requests |