INFO: task syz-executor.1:7377 blocked for more than 143 seconds.
Not tainted 6.9.0-rc6-syzkaller-00046-g18daea77cca6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26336 pid:7377 tgid:7356 ppid:6488 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0xf15/0x5d00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6838
schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2558
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116
__flush_workqueue+0x39e/0x1200 kernel/workqueue.c:4007
nbd_start_device_ioctl drivers/block/nbd.c:1463 [inline]
__nbd_ioctl drivers/block/nbd.c:1524 [inline]
nbd_ioctl+0x308/0xfd0 drivers/block/nbd.c:1564
blkdev_ioctl+0x2f7/0x770 block/ioctl.c:642
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:904 [inline]
__se_sys_ioctl fs/ioctl.c:890 [inline]
__x64_sys_ioctl+0x193/0x220 fs/ioctl.c:890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac0287dea9
RSP: 002b:00007fac036290c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fac029ac120 RCX: 00007fac0287dea9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 000000000000000b
RBP: 00007fac028ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fac029ac120 R15: 00007ffd876ffc88
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
3 locks held by kworker/1:2/1152:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc90004defd80 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
#2: ffff88801ea51240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x1bb/0x26e0 drivers/net/netdevsim/fib.c:1489
3 locks held by kworker/u8:8/2435:
3 locks held by acpid/4511:
#0: ffff888052757110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_close_device drivers/input/evdev.c:411 [inline]
#0: ffff888052757110 (&evdev->mutex){+.+.}-{3:3}, at: evdev_release+0x29f/0x400 drivers/input/evdev.c:456
#1: ffff8880527542c0 (&dev->mutex#2){+.+.}-{3:3}, at: input_close_device+0x46/0x200 drivers/input/input.c:704
#2: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#2: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x682/0x7a0 kernel/rcu/tree_exp.h:939
2 locks held by getty/4829:
#0: ffff88802ee890a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
2 locks held by kworker/u9:2/5088:
#0: ffff88802056d948 ((wq_completion)nbd1-recv){+.+.}-{0:0}, at: process_one_work+0x1296/0x1ac0 kernel/workqueue.c:3242
#1: ffffc90003277d80 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x906/0x1ac0 kernel/workqueue.c:3243
3 locks held by syz-executor.2/9193:
#0: ffffffff8f3014c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f3014c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xe60 net/core/rtnetlink.c:6592
#1: ffff888061f91408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x203/0x4e0 drivers/net/wireguard/device.c:50
#2: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#2: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
2 locks held by syz-executor.3/9495:
3 locks held by syz-executor.0/9526:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc6-syzkaller-00046-g18daea77cca6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:380
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9495 Comm: syz-executor.3 Not tainted 6.9.0-rc6-syzkaller-00046-g18daea77cca6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xc3/0x560 kernel/locking/lockdep.c:5725
Code: 07 0f 87 0e 04 00 00 89 d5 be 08 00 00 00 48 89 e8 48 c1 e8 06 48 8d 3c c5 10 49 9f 8f e8 75 22 7d 00 48 0f a3 2d 9d 58 33 0e <0f> 82 ad 03 00 00 48 c7 c0 d8 7c 9f 8f 48 ba 00 00 00 00 00 fc ff
RSP: 0018:ffffc900031d7ad8 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 1ffff9200063af5d RCX: ffffffff816bf06b
RDX: fffffbfff1f3e923 RSI: 0000000000000008 RDI: ffffffff8f9f4910
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff1f3e922
R10: ffffffff8f9f4917 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000000 R14: ffff888052754230 R15: 0000000000000000
FS: 00007f36175de6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020307000 CR3: 0000000061b18000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
input_event drivers/input/input.c:434 [inline]
input_event+0x70/0xa0 drivers/input/input.c:427
uinput_inject_events drivers/input/misc/uinput.c:625 [inline]
uinput_write+0xc71/0x12c0 drivers/input/misc/uinput.c:647
vfs_write+0x298/0x1100 fs/read_write.c:588
ksys_write+0x1f8/0x260 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3617a7dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f36175de0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3617bac050 RCX: 00007f3617a7dea9
RDX: 00000000200005d8 RSI: 00000000200005c0 RDI: 0000000000000005
RBP: 00007f3617aca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f3617bac050 R15: 00007ffdfe731458