INFO: task syz-executor.1:13805 blocked for more than 143 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:29688 pid:13805 ppid: 13794 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6385
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
io_init_wq_offload fs/io_uring.c:8623 [inline]
io_uring_alloc_task_context+0xf9/0x517 fs/io_uring.c:8664
__io_uring_add_tctx_node.cold+0x19/0x188 fs/io_uring.c:9716
io_uring_add_tctx_node fs/io_uring.c:9761 [inline]
__do_sys_io_uring_enter+0x19db/0x1f50 fs/io_uring.c:10072
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f261e2b3e99
RSP: 002b:00007f261cb84168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f261e3c7370 RCX: 00007f261e2b3e99
RDX: 0000000000000000 RSI: 00000000000000b4 RDI: 0000000000000003
RBP: 00007f261e30dff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f261e8fab1f R14: 00007f261cb84300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb84260 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
9 locks held by kworker/1:2/137:
1 lock held by udevd/2971:
2 locks held by getty/3281:
#0: ffff888023c31098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
3 locks held by udevd/4735:
#0: ffff8880192db888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
#0: ffff8880192db888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
#1: ffff8880787313a8 (kn->active#44){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
#1: ffff8880787313a8 (kn->active#44){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
#2: ffff888075b49220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
#2: ffff888075b49220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
1 lock held by syz-executor.1/13800:
1 lock held by syz-executor.1/13805:
#0: ffff8880296660a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_init_wq_offload fs/io_uring.c:8623 [inline]
#0: ffff8880296660a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_alloc_task_context+0xf9/0x517 fs/io_uring.c:8664
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c: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+0x1b3/0x230 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+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3662 Comm: kworker/0:5 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:debug_smp_processor_id+0x13/0x20 lib/smp_processor_id.c:60
Code: 28 48 c7 c7 20 2a 05 8a e8 71 17 bd ff e8 b5 db cc ff eb a2 0f 1f 00 0f 1f 44 00 00 48 c7 c6 60 2a 05 8a 48 c7 c7 a0 2a 05 8a 78 fe ff ff 0f 1f 84 00 00 00 00 00 55 48 89 fd 0f 1f 44 00 00
RSP: 0018:ffffc900028ffa50 EFLAGS: 00000082
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff815cab61
RDX: 0000000000000001 RSI: ffffffff8a052a60 RDI: ffffffff8a052aa0
RBP: 1ffff9200051ff52 R08: 0000000000000000 R09: ffffffff8d916597
R10: fffffbfff1b22cb2 R11: 0000000000000001 R12: 0000000000000001
R13: ffffc900028ffba8 R14: 1ffff9200051ff71 R15: ffff888033c80000
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000e68100 CR3: 00000000195ef000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1169 [inline]
rcu_lockdep_current_cpu_online+0x2d/0x150 kernel/rcu/tree.c:1160
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5648
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194
crng_backtrack_protect drivers/char/random.c:1053 [inline]
_get_random_bytes+0x295/0x670 drivers/char/random.c:1540
eth_random_addr include/linux/etherdevice.h:232 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:752 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:802 [inline]
nsim_dev_trap_report_work+0x33a/0xbc0 drivers/net/netdevsim/dev.c:843
process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
worker_thread+0x65d/0x1130 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 c7 c7 20 2a 05 8a mov $0xffffffff8a052a20,%rdi
7: e8 71 17 bd ff callq 0xffbd177d
c: e8 b5 db cc ff callq 0xffccdbc6
11: eb a2 jmp 0xffffffb5
13: 0f 1f 00 nopl (%rax)
16: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
1b: 48 c7 c6 60 2a 05 8a mov $0xffffffff8a052a60,%rsi
22: 48 c7 c7 a0 2a 05 8a mov $0xffffffff8a052aa0,%rdi
* 29: e9 78 fe ff ff jmpq 0xfffffea6 <-- trapping instruction
2e: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
35: 00
36: 55 push %rbp
37: 48 89 fd mov %rdi,%rbp
3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)