INFO: task syz-executor.0:7743 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-10827-g489fa31ea873 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29520 pid:7743 ppid:5125 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xcce/0x5b20 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
__do_sys_io_uring_register+0x1a3/0x26e0 io_uring/io_uring.c:4342
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c91c8c0f9
RSP: 002b:00007f1c929b6168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 00007f1c91dac050 RCX: 00007f1c91c8c0f9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000003
RBP: 00007f1c91ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c91ecfb1f R14: 00007f1c929b6300 R15: 0000000000022000
INFO: task syz-executor.0:7746 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-10827-g489fa31ea873 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:29520 pid:7746 ppid:5125 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xcce/0x5b20 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
io_init_wq_offload io_uring/tctx.c:22 [inline]
io_uring_alloc_task_context+0xfa/0x630 io_uring/tctx.c:76
__io_uring_add_tctx_node+0x2e1/0x520 io_uring/tctx.c:101
__io_uring_add_tctx_node_from_submit+0x8e/0x130 io_uring/tctx.c:144
io_uring_add_tctx_node io_uring/tctx.h:32 [inline]
__do_sys_io_uring_enter+0x1f16/0x2810 io_uring/io_uring.c:3453
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c91c8c0f9
RSP: 002b:00007f1c92995168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f1c91dac120 RCX: 00007f1c91c8c0f9
RDX: 0000000000000000 RSI: 0000000000002412 RDI: 0000000000000003
RBP: 00007f1c91ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c91ecfb1f R14: 00007f1c92995300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c796830 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c796530 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8c797380 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4760:
#0: ffff888029610098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:1/3569:
1 lock held by syz-executor.0/7739:
1 lock held by syz-executor.0/7743:
#0: ffff88804a84e0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __do_sys_io_uring_register+0x1a3/0x26e0 io_uring/io_uring.c:4342
1 lock held by syz-executor.0/7746:
#0: ffff88804a84e0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_init_wq_offload io_uring/tctx.c:22 [inline]
#0: ffff88804a84e0a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_alloc_task_context+0xfa/0x630 io_uring/tctx.c:76
1 lock held by syz-executor.0/7846:
1 lock held by syz-executor.0/7848:
#0: ffff888017ed00a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_tw_lock io_uring/io_uring.h:305 [inline]
#0: ffff888017ed00a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_req_task_cancel+0xb1/0x110 io_uring/io_uring.c:1412
1 lock held by syz-executor.0/7888:
#0: ffff88802edf40a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_tw_lock io_uring/io_uring.h:305 [inline]
#0: ffff88802edf40a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_req_task_cancel+0xb1/0x110 io_uring/io_uring.c:1412
1 lock held by syz-executor.0/7890:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-syzkaller-10827-g489fa31ea873 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x316/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x33f/0x460 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe94/0x11e0 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.2.0-syzkaller-10827-g489fa31ea873 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
RIP: 0010:__sanitizer_cov_trace_switch+0x24/0x90 kernel/kcov.c:323
Code: 84 00 00 00 00 00 f3 0f 1e fa 41 56 41 55 41 54 49 89 fc 55 48 89 f5 53 48 8b 46 08 48 83 f8 20 74 63 77 44 48 83 f8 08 74 53 <48> 83 f8 10 75 2f 41 bd 03 00 00 00 4c 8b 75 00 31 db 4d 85 f6 74
RSP: 0018:ffffc90000147998 EFLAGS: 00000212
RAX: 0000000000000010 RBX: 0000000000000d00 RCX: 0000000000000100
RDX: 0000000000000000 RSI: ffffffff8b5cf6c0 RDI: 0000000000000d00
RBP: ffffffff8b5cf6c0 R08: 0000000000000003 R09: 000000000000ffff
R10: 0000000000000010 R11: 0000000000094001 R12: 0000000000000d00
R13: dffffc0000000000 R14: ffff888076299640 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3716130158 CR3: 000000002ba91000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
eth_type_vlan include/linux/if_vlan.h:309 [inline]
__netif_receive_skb_core+0x3a6/0x3a40 net/core/dev.c:5307
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:5475
__netif_receive_skb+0x1f/0x1c0 net/core/dev.c:5591
process_backlog+0x279/0x850 net/core/dev.c:5919
__napi_poll+0xb8/0x870 net/core/dev.c:6480
napi_poll net/core/dev.c:6547 [inline]
net_rx_action+0x9fd/0xdc0 net/core/dev.c:6657
__do_softirq+0x2e3/0xae3 kernel/softirq.c:571
run_ksoftirqd kernel/softirq.c:934 [inline]
run_ksoftirqd+0x31/0x60 kernel/softirq.c:926
smpboot_thread_fn+0x659/0xa20 kernel/smpboot.c:164
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308