INFO: task dhcpcd:3186 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:dhcpcd state:D stack:20496 pid: 3186 ppid: 3185 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0x971/0x10e0 kernel/sched/core.c:6296
schedule+0x12b/0x1f0 kernel/sched/core.c:6369
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
__mutex_lock_common+0xe9f/0x2490 kernel/locking/mutex.c:673
__mutex_lock kernel/locking/mutex.c:733 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785
devinet_ioctl+0x22c/0x1d10 net/ipv4/devinet.c:1068
inet_ioctl+0x32d/0x400 net/ipv4/af_inet.c:969
sock_do_ioctl+0x14e/0x340 net/socket.c:1122
sock_ioctl+0x4a7/0x770 net/socket.c:1239
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9a809b00e7
RSP: 002b:00007ffe3e333108 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9a808c26c8 RCX: 00007f9a809b00e7
RDX: 00007ffe3e3432f8 RSI: 0000000000008914 RDI: 0000000000000012
RBP: 00007ffe3e3534a8 R08: 00007ffe3e3432b8 R09: 00007ffe3e343268
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe3e3432f8 R14: 0000000000000028 R15: 0000000000008914
INFO: task kworker/1:7:3754 blocked for more than 144 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7 state:D stack:24576 pid: 3754 ppid: 2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0x971/0x10e0 kernel/sched/core.c:6296
schedule+0x12b/0x1f0 kernel/sched/core.c:6369
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
__mutex_lock_common+0xe9f/0x2490 kernel/locking/mutex.c:673
__mutex_lock kernel/locking/mutex.c:733 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785
linkwatch_event+0xa/0x50 net/core/link_watch.c:262
process_one_work+0x850/0x1130 kernel/workqueue.c:2307
worker_thread+0xab1/0x1300 kernel/workqueue.c:2454
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
INFO: task syz-executor.3:31444 blocked for more than 144 seconds.
Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:20816 pid:31444 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0x971/0x10e0 kernel/sched/core.c:6296
schedule+0x12b/0x1f0 kernel/sched/core.c:6369
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
__mutex_lock_common+0xe9f/0x2490 kernel/locking/mutex.c:673
__mutex_lock kernel/locking/mutex.c:733 [inline]
mutex_lock_nested+0x1a/0x20 kernel/locking/mutex.c:785
rtnl_lock net/core/rtnetlink.c:72 [inline]
rtnetlink_rcv_msg+0x92d/0xec0 net/core/rtnetlink.c:5589
netlink_rcv_skb+0x200/0x470 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x81a/0x9f0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0xaec/0xe60 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg net/socket.c:725 [inline]
__sys_sendto+0x42e/0x5b0 net/socket.c:2040
__do_sys_sendto net/socket.c:2052 [inline]
__se_sys_sendto net/socket.c:2048 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2048
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f57b1174c7c
RSP: 002b:00007ffe464f46c0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f57b220d320 RCX: 00007f57b1174c7c
RDX: 0000000000000028 RSI: 00007f57b220d370 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe464f4714 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f57b220d370 R14: 0000000000000003 R15: 0000000000000000
Showing all locks held in the system:
3 locks held by ksoftirqd/1/19:
1 lock held by khungtaskd/27:
#0: ffffffff8cb1e300 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by dhcpcd/3186:
#0: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x22c/0x1d10 net/ipv4/devinet.c:1068
2 locks held by getty/3283:
#0: ffff88814b6e4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2077
3 locks held by kworker/1:7/3754:
#0: ffff888011464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7c7/0x1130
#1: ffffc90003bbfd20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x805/0x1130 kernel/workqueue.c:2282
#2: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:262
2 locks held by kworker/u4:7/4253:
2 locks held by kworker/0:3/16728:
3 locks held by kworker/0:0/3567:
#0: ffff888011464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7c7/0x1130
#1: ffffc900030efd20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x805/0x1130 kernel/workqueue.c:2282
#2: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:75
3 locks held by kworker/1:3/13306:
#0: ffff88814ac13d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7c7/0x1130
#1: ffffc9000f957d20 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x805/0x1130 kernel/workqueue.c:2282
#2: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4595
5 locks held by kworker/u4:3/25879:
#0: ffff88814499b138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7c7/0x1130
#1: ffffc90004007d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x805/0x1130 kernel/workqueue.c:2282
#2: ffffffff8db8c270 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:557
#3: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock_unregistering net/core/dev.c:10892 [inline]
#3: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x189/0x4b0 net/core/dev.c:10930
#4: ffffffff8cb232e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#4: ffffffff8cb232e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x277/0x740 kernel/rcu/tree_exp.h:840
1 lock held by syz-executor.3/31444:
#0: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8db98208 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x92d/0xec0 net/core/rtnetlink.c:5589
2 locks held by kworker/0:1/31489:
#0: ffff888011466538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7c7/0x1130
#1: ffffc90002abfd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x805/0x1130 kernel/workqueue.c:2282
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14 Comm: rcu_preempt Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4727 [inline]
RIP: 0010:__lock_acquire+0x893/0x2b00 kernel/locking/lockdep.c:4977
Code: 8d 98 00 1b 92 8f 48 be 00 00 00 00 00 fc ff df 48 81 c3 b8 00 00 00 48 89 d8 48 c1 e8 03 0f b6 04 30 84 c0 0f 85 bf 00 00 00 <8b> 03 8d 48 ff 44 38 e1 45 0f b6 e4 44 0f 42 e0 49 ff c6 48 8b 44
RSP: 0018:ffffc90000dc0840 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff8f97b5b8 RCX: ffffffff8165e81f
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffffffff8ffdafc8
RBP: ffffc90000dc0990 R08: dffffc0000000000 R09: fffffbfff1ffb5fa
R10: fffffbfff1ffb5fa R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888012022780
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01f2a9c70 CR3: 000000007f772000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5639
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:694 [inline]
__queue_work+0xe8/0xc60 kernel/workqueue.c:1457
call_timer_fn+0xf6/0x210 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1461 [inline]
__run_timers+0x752/0x910 kernel/time/timer.c:1734
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1747
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:__debug_object_init+0xb11/0x1860 lib/debugobjects.c:608
Code: 8b 07 48 c7 c7 e0 dd d5 8a 48 c7 c6 00 dc d5 8a 48 89 da 44 89 f1 4c 8b 4c 24 08 31 c0 e8 57 c9 37 fd 0f 0b ff 05 3b 08 ea 09 <48> c7 84 24 a0 00 00 00 0e 36 e0 45 48 8b 84 24 98 00 00 00 49 c7
RSP: 0018:ffffc90000d37a60 EFLAGS: 00000246
RAX: ffffc90000d38001 RBX: ffff888012021d20 RCX: 0000000000000001
RDX: ffffc90000d30000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000d37c30 R08: ffffffff818b21e0 R09: fffffbfff21c543b
R10: fffffbfff21c543b R11: 0000000000000000 R12: ffffc90000d37c60
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888152fb4901
init_timer_on_stack_key kernel/time/timer.c:752 [inline]
schedule_timeout+0x11d/0x300 kernel/time/timer.c:1879
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1963
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2136
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 8d 98 00 1b 92 8f lea -0x706de500(%rax),%ebx
6: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi
d: fc ff df
10: 48 81 c3 b8 00 00 00 add $0xb8,%rbx
17: 48 89 d8 mov %rbx,%rax
1a: 48 c1 e8 03 shr $0x3,%rax
1e: 0f b6 04 30 movzbl (%rax,%rsi,1),%eax
22: 84 c0 test %al,%al
24: 0f 85 bf 00 00 00 jne 0xe9
* 2a: 8b 03 mov (%rbx),%eax <-- trapping instruction
2c: 8d 48 ff lea -0x1(%rax),%ecx
2f: 44 38 e1 cmp %r12b,%cl
32: 45 0f b6 e4 movzbl %r12b,%r12d
36: 44 0f 42 e0 cmovb %eax,%r12d
3a: 49 ff c6 inc %r14
3d: 48 rex.W
3e: 8b .byte 0x8b
3f: 44 rex.R