INFO: task dhcpcd:3175 blocked for more than 143 seconds.
Not tainted 5.15.149-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:23544 pid: 3175 ppid: 1 flags:0x00004202
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wait_for_unix_gc+0x14e/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x143/0x2090 net/unix/af_unix.c:1771
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_write_iter+0x39b/0x530 net/socket.c:1079
call_write_iter include/linux/fs.h:2146 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacf/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f937b58abf2
RSP: 002b:00007fff75a84178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000556529dbf990 RCX: 00007f937b58abf2
RDX: 0000000000000046 RSI: 00007fff75a84190 RDI: 0000000000000005
RBP: 00007fff75a84190 R08: 0000000000000008 R09: 0000000000000035
R10: 0000000000000000 R11: 0000000000000246 R12: 0000556528014efc
R13: 00007fff75a845c0 R14: 0000556529e9da10 R15: 0000000000000001
INFO: task udevd:24529 blocked for more than 143 seconds.
Not tainted 5.15.149-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26176 pid:24529 ppid: 2963 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wait_for_unix_gc+0x14e/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x143/0x2090 net/unix/af_unix.c:1771
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_write_iter+0x39b/0x530 net/socket.c:1079
call_write_iter include/linux/fs.h:2146 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacf/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fc99c084bf2
RSP: 002b:00007fff256f7338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc99c084bf2
RDX: 0000000000000000 RSI: 00007fff256f738f RDI: 000000000000000a
RBP: 00007fff256f738f R08: 0000000000000001 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 000000000000000a
R13: 00007fc99bf59ae0 R14: 0000000000000000 R15: 000055682c8ad910
INFO: task syz-executor.1:24643 blocked for more than 144 seconds.
Not tainted 5.15.149-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27712 pid:24643 ppid: 3536 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wait_for_unix_gc+0x14e/0x210 net/unix/garbage.c:201
unix_stream_sendmsg+0xc3/0x1070 net/unix/af_unix.c:2035
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431
___sys_sendmsg+0x252/0x2e0 net/socket.c:2485
__sys_sendmsg net/socket.c:2514 [inline]
__do_sys_sendmsg net/socket.c:2523 [inline]
__se_sys_sendmsg+0x19a/0x260 net/socket.c:2521
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f91ce626da9
RSP: 002b:00007f91ccba70c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f91ce754f80 RCX: 00007f91ce626da9
RDX: 0000000000000000 RSI: 0000000020002fc0 RDI: 0000000000000004
RBP: 00007f91ce67347a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f91ce754f80 R15: 00007ffecd6d3458
INFO: task syz-executor.2:24653 blocked for more than 144 seconds.
Not tainted 5.15.149-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28376 pid:24653 ppid: 7966 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wait_for_unix_gc+0x14e/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x143/0x2090 net/unix/af_unix.c:1771
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431
___sys_sendmsg+0x252/0x2e0 net/socket.c:2485
__sys_sendmsg net/socket.c:2514 [inline]
__do_sys_sendmsg net/socket.c:2523 [inline]
__se_sys_sendmsg+0x19a/0x260 net/socket.c:2521
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f75b371eda9
RSP: 002b:00007f75b1c9f0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f75b384cf80 RCX: 00007f75b371eda9
RDX: 0000000000000000 RSI: 0000000020003640 RDI: 0000000000000004
RBP: 00007f75b376b47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f75b384cf80 R15: 00007ffd31005408
INFO: task syz-executor.4:24677 blocked for more than 145 seconds.
Not tainted 5.15.149-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28408 pid:24677 ppid: 3547 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wait_for_unix_gc+0x14e/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x143/0x2090 net/unix/af_unix.c:1771
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
____sys_sendmsg+0x59e/0x8f0 net/socket.c:2431
___sys_sendmsg+0x252/0x2e0 net/socket.c:2485
__sys_sendmsg net/socket.c:2514 [inline]
__do_sys_sendmsg net/socket.c:2523 [inline]
__se_sys_sendmsg+0x19a/0x260 net/socket.c:2521
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f3a5390bda9
RSP: 002b:00007f3a51e6b0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3a53a3a050 RCX: 00007f3a5390bda9
RDX: 0000000000000000 RSI: 00000000200003c0 RDI: 0000000000000004
RBP: 00007f3a5395847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f3a53a3a050 R15: 00007ffcf777a6a8
INFO: task syz-executor.3:24699 blocked for more than 145 seconds.
Not tainted 5.15.149-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27712 pid:24699 ppid: 3542 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
wait_for_unix_gc+0x14e/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x143/0x2090 net/unix/af_unix.c:1771
sock_sendmsg_nosec net/socket.c:704 [inline]
__sock_sendmsg net/socket.c:716 [inline]
sock_write_iter+0x39b/0x530 net/socket.c:1079
call_write_iter include/linux/fs.h:2146 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacf/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8e77338da9
RSP: 002b:00007f8e758b90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f8e77466f80 RCX: 00007f8e77338da9
RDX: 0000000000003e80 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f8e7738547a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f8e77466f80 R15: 00007ffdc99621c8
Showing all locks held in the system:
3 locks held by kworker/u4:0/9:
3 locks held by kworker/1:1/25:
#0: ffff888011c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90000dffd20 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff88807aa98240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x2cd/0x4120 drivers/net/netdevsim/fib.c:1478
1 lock held by khungtaskd/27:
#0: ffffffff8c91f720 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3264:
#0: ffff88814b8b8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000229b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:8/6092:
1 lock held by syz-executor.0/24636:
1 lock held by syz-executor.0/25076:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.149-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6009 Comm: kworker/1:12 Not tainted 5.15.149-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events linkwatch_event
RIP: 0010:io_serial_in+0x72/0xb0 drivers/tty/serial/8250/8250_port.c:461
Code: f4 03 07 fd 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 75 bc 50 fd 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 89 e9 80 e1 07 38 c1 7c ad 48 89 ef
RSP: 0018:ffffc9000e4c7390 EFLAGS: 00000002
RAX: 1ffffffff22de800 RBX: ffffffff916f4300 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000020
RBP: 0000000000000000 R08: ffffffff847931e2 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: 0000000000000051
R13: ffffffff916f42c0 R14: 00000000000003fd R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000048000 CR3: 00000000a208b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:116 [inline]
wait_for_xmitr+0x51/0x260 drivers/tty/serial/8250/8250_port.c:2089
serial8250_console_putchar+0x19/0x50 drivers/tty/serial/8250/8250_port.c:3321
uart_console_write+0xa9/0x100 drivers/tty/serial/serial_core.c:1971
serial8250_console_write+0xc8e/0x1180 drivers/tty/serial/8250/8250_port.c:3398
console_unlock+0xced/0x12b0 kernel/printk/printk.c:2738
vprintk_emit+0xbf/0x150 kernel/printk/printk.c:2268
_printk+0xd1/0x111 kernel/printk/printk.c:2293
addrconf_notify+0xa80/0xf30 net/ipv6/addrconf.c:3642
notifier_call_chain kernel/notifier.c:83 [inline]
raw_notifier_call_chain+0xd0/0x170 kernel/notifier.c:391
call_netdevice_notifiers_info net/core/dev.c:2018 [inline]
netdev_state_change+0x1a3/0x250 net/core/dev.c:1409
linkwatch_do_dev+0x10c/0x160 net/core/link_watch.c:167
__linkwatch_run_queue+0x4ca/0x7f0 net/core/link_watch.c:213
linkwatch_event+0x48/0x50 net/core/link_watch.c:252
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298