INFO: task syz-executor.5:17294 blocked for more than 143 seconds.
Not tainted 5.17.0-rc6-syzkaller-00251-gdcde98da9970 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:27912 pid:17294 ppid: 3643 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x260 kernel/sched/core.c:6377
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9875
io_uring_clean_tctx fs/io_uring.c:9891 [inline]
io_uring_cancel_generic+0x5c3/0x695 fs/io_uring.c:9969
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x523/0x2a30 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x45a/0x2490 kernel/signal.c:2863
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/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: 0033:0x7f42d7246049
RSP: 002b:00007f42d5b9a218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f42d7359038 RCX: 00007f42d7246049
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f42d7359038
RBP: 00007f42d7359030 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f42d735903c
R13: 00007f42d788cb1f R14: 00007f42d5b9a300 R15: 0000000000022000
INFO: task syz-executor.3:17316 blocked for more than 144 seconds.
Not tainted 5.17.0-rc6-syzkaller-00251-gdcde98da9970 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25736 pid:17316 ppid: 3644 flags:0x00024004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x260 kernel/sched/core.c:6377
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9875
io_uring_clean_tctx fs/io_uring.c:9891 [inline]
io_uring_cancel_generic+0x5c3/0x695 fs/io_uring.c:9969
io_uring_files_cancel include/linux/io_uring.h:16 [inline]
do_exit+0x523/0x2a30 kernel/exit.c:761
do_group_exit+0xd2/0x2f0 kernel/exit.c:935
get_signal+0x45a/0x2490 kernel/signal.c:2863
arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x17d/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: 0033:0x7febc79d0049
RSP: 002b:00007febc6345168 EFLAGS: 00000246 ORIG_RAX: 00000000000000db
RAX: 0000000000000001 RBX: 00007febc7ae2f60 RCX: 00007febc79d0049
RDX: 0000000080000000 RSI: 0000000000000001 RDI: 0000000020002180
RBP: 00007febc7a2a08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007febc8016b1f R14: 00007febc6345300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb845e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/3282:
#0: ffff88814ad12098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b732e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
3 locks held by kworker/u4:21/7199:
1 lock held by syz-executor.5/17294:
#0: ffff888028b510a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9875
4 locks held by iou-sqp-17294/17305:
1 lock held by syz-executor.3/17316:
#0: ffff88807eb700a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x109/0x20a fs/io_uring.c:9875
2 locks held by iou-sqp-17316/17318:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc6-syzkaller-00251-gdcde98da9970 #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:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:377
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: 7199 Comm: kworker/u4:21 Not tainted 5.17.0-rc6-syzkaller-00251-gdcde98da9970 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_dat_purge
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 61 d9 46 00 5d be 03 00 00 00 e9 b6 6c 66 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 39 bf 89 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90000dc0ad8 EFLAGS: 00000082
RAX: 1ffff1100412fb6d RBX: ffff88802097db58 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88802097db58
RBP: 0000000000000000 R08: ffff88802097db58 R09: ffff88802097dae3
R10: ffffffff81e554d3 R11: 0000000000000001 R12: ffff88802097dc98
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558f23bb2600 CR3: 0000000040f58000 CR4: 00000000003506e0
Call Trace:
io_poll_wake+0x19/0x500 fs/io_uring.c:5634
__wake_up_common+0x147/0x650 kernel/sched/wait.c:108
__wake_up_common_lock+0xd0/0x130 kernel/sched/wait.c:138
snd_pcm_update_state+0x46a/0x540 sound/core/pcm_lib.c:204
snd_pcm_update_hw_ptr0+0xa75/0x1a50 sound/core/pcm_lib.c:465
snd_pcm_period_elapsed_under_stream_lock+0x15a/0x230 sound/core/pcm_lib.c:1817
snd_pcm_period_elapsed+0x28/0x50 sound/core/pcm_lib.c:1849
dummy_hrtimer_callback+0x94/0x1b0 sound/drivers/dummy.c:377
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x609/0xe50 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1766
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
do_softirq.part.0+0xde/0x130 kernel/softirq.c:459
do_softirq kernel/softirq.c:451 [inline]
__local_bh_enable_ip+0x102/0x120 kernel/softirq.c:383
spin_unlock_bh include/linux/spinlock.h:394 [inline]
__batadv_dat_purge.part.0+0x29f/0x3b0 net/batman-adv/distributed-arp-table.c:187
__batadv_dat_purge net/batman-adv/distributed-arp-table.c:168 [inline]
batadv_dat_purge+0x47/0x60 net/batman-adv/distributed-arp-table.c:206
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 48 89 ef mov %rbp,%rdi
3: 5d pop %rbp
4: e9 61 d9 46 00 jmpq 0x46d96a
9: 5d pop %rbp
a: be 03 00 00 00 mov $0x3,%esi
f: e9 b6 6c 66 02 jmpq 0x2666cca
14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
1a: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi
21: e8 b4 ff ff ff callq 0xffffffda
26: 31 c0 xor %eax,%eax
28: c3 retq
29: 90 nop
* 2a: 65 8b 05 39 bf 89 7e mov %gs:0x7e89bf39(%rip),%eax # 0x7e89bf6a <-- trapping instruction
31: 89 c1 mov %eax,%ecx
33: 48 8b 34 24 mov (%rsp),%rsi
37: 81 e1 00 01 00 00 and $0x100,%ecx
3d: 65 gs
3e: 48 rex.W
3f: 8b .byte 0x8b