INFO: task klogd:4513 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-syzkaller-00188-g166c2c8a6a4d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:klogd state:D stack:23568 pid:4513 tgid:4513 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
wait_for_unix_gc+0x150/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x11a/0x2200 net/unix/af_unix.c:1924
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
__sys_sendto+0x3a4/0x4f0 net/socket.c:2191
__do_sys_sendto net/socket.c:2203 [inline]
__se_sys_sendto net/socket.c:2199 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2199
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f1648ef09b5
RSP: 002b:00007ffe77171a08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1648ef09b5
RDX: 0000000000000058 RSI: 000055acdab5dcc0 RDI: 0000000000000003
RBP: 000055acdab59910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f164907e212 R14: 00007ffe77171b08 R15: 0000000000000000
INFO: task dhcpcd:4737 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-syzkaller-00188-g166c2c8a6a4d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:23664 pid:4737 tgid:4737 ppid:1 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
wait_for_unix_gc+0x150/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x11a/0x2200 net/unix/af_unix.c:1924
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
call_write_iter include/linux/fs.h:2085 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f6f2bafbbf2
RSP: 002b:00007ffcac005e28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000056394d192990 RCX: 00007f6f2bafbbf2
RDX: 0000000000000046 RSI: 00007ffcac005e40 RDI: 0000000000000005
RBP: 00007ffcac005e40 R08: 0000000000000008 R09: 0000000000000035
R10: 0000000000000000 R11: 0000000000000246 R12: 000056394b486efc
R13: 00007ffcac006270 R14: 000056394d270a10 R15: 0000000000000001
INFO: task udevd:5070 blocked for more than 143 seconds.
Not tainted 6.8.0-rc4-syzkaller-00188-g166c2c8a6a4d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26968 pid:5070 tgid:5070 ppid:4524 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
wait_for_unix_gc+0x150/0x210 net/unix/garbage.c:201
unix_dgram_sendmsg+0x11a/0x2200 net/unix/af_unix.c:1924
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
sock_write_iter+0x2dd/0x400 net/socket.c:1160
call_write_iter include/linux/fs.h:2085 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f8edb316bf2
RSP: 002b:00007ffd592800d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8edb316bf2
RDX: 0000000000000000 RSI: 00007ffd5928012f RDI: 000000000000000a
RBP: 00007ffd5928012f R08: 0000000000000001 R09: b94ebe8e2471bafc
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000a
R13: 00007f8edb740ae0 R14: 0000000000000000 R15: 00005557375da910
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:11/2890:
#0: ffff888014c8d538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c8d538 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000a81fd20 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000a81fd20 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
2 locks held by getty/4820:
#0: ffff88802fffa0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor598/5069:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc4-syzkaller-00188-g166c2c8a6a4d #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+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5069 Comm: syz-executor598 Not tainted 6.8.0-rc4-syzkaller-00188-g166c2c8a6a4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x30/0x70 kernel/kcov.c:207
Code: 04 24 65 48 8b 0d b0 52 70 7e 65 8b 15 b1 52 70 7e f7 c2 00 01 ff 00 74 11 f7 c2 00 01 00 00 74 35 83 b9 fc 15 00 00 00 74 2c <8b> 91 d8 15 00 00 83 fa 02 75 21 48 8b 91 e0 15 00 00 48 8b 32 48
RSP: 0018:ffffc90003a8f8d8 EFLAGS: 00000246
RAX: ffffffff8a0931c4 RBX: ffff88802271d640 RCX: ffff888029485940
RDX: 0000000080000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90003a8fa50 R08: ffffffff893720bd R09: 1ffff110057f930c
R10: dffffc0000000000 R11: ffffed10057f930d R12: 1ffff110044e3aee
R13: ffffc90003a8f940 R14: 0000000000000000 R15: ffffffff8f478fa0
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555737624618 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unix_gc+0x1064/0x1330 net/unix/garbage.c:318
unix_release_sock+0xadd/0xd20 net/unix/af_unix.c:683
unix_release+0x91/0xc0 net/unix/af_unix.c:1064
__sock_release net/socket.c:659 [inline]
sock_close+0xbc/0x240 net/socket.c:1421
__fput+0x429/0x8a0 fs/file_table.c:376
task_work_run+0x24e/0x310 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa2c/0x2740 kernel/exit.c:871
do_group_exit+0x206/0x2c0 kernel/exit.c:1020
__do_sys_exit_group kernel/exit.c:1031 [inline]
__se_sys_exit_group kernel/exit.c:1029 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fc50db6ec89
Code: Unable to access opcode bytes at 0x7fc50db6ec5f.
RSP: 002b:00007fff60ef8098 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc50db6ec89
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 00007fc50dbe92d0 R08: ffffffffffffffb8 R09: 0000000000000006
R10: 0000000000000006 R11: 0000000000000246 R12: 00007fc50dbe92d0
R13: 0000000000000000 R14: 00007fc50dbe9d20 R15: 00007fc50db3fed0
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.219 msecs