INFO: task syz-executor.3:10359 blocked for more than 143 seconds.
Not tainted 5.15.0-rc2-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28616 pid:10359 ppid: 6565 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6287
schedule+0xd3/0x270 kernel/sched/core.c:6366
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6425
__mutex_lock_common kernel/locking/mutex.c:669 [inline]
__mutex_lock+0xa34/0x12f0 kernel/locking/mutex.c:729
ip6mr_sk_done+0xe9/0x370 net/ipv6/ip6mr.c:1582
rawv6_close+0x58/0x80 net/ipv6/raw.c:1198
inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:479
__sock_release+0xcd/0x280 net/socket.c:649
sock_close+0x18/0x20 net/socket.c:1314
__fput+0x288/0x9f0 fs/file_table.c:280
task_work_run+0xdd/0x1a0 kernel/task_work.c:164
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
exit_to_user_mode_prepare+0x27e/0x290 kernel/entry/common.c:209
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f051752954b
RSP: 002b:00007ffe1b64cae0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f051752954b
RDX: 0000001b2e0279a8 RSI: ffffffff817b6d02 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000001b2e02533c
R10: 000000000000113e R11: 0000000000000293 R12: 00007f051767bb00
R13: 00007f051767bb00 R14: 00007f051767af80 R15: 000000000004edcc
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8b97d460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6446
3 locks held by kworker/0:2/1051:
#0: ffff888010c73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888010c73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888010c73d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268
#1: ffffc90004657db0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272
#2: ffffffff8d0e1728 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x83/0xe10 net/wireless/reg.c:2423
3 locks held by kworker/1:2/2932:
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268
#1: ffffc9000b2bfdb0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272
#2: ffffffff8d0e1728 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:251
3 locks held by kworker/1:3/2969:
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888010c67d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268
#1: ffffc90002ac7db0 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272
#2: ffffffff8d0e1728 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
1 lock held by in:imklog/6243:
#0: ffff88807e6ab0f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
3 locks held by kworker/0:7/8372:
#0: ffff888027770d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888027770d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888027770d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888027770d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:634 [inline]
#0: ffff888027770d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:661 [inline]
#0: ffff888027770d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x8a3/0x16b0 kernel/workqueue.c:2268
#1: ffffc90016cdfdb0 ((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x8d7/0x16b0 kernel/workqueue.c:2272
#2: ffffffff8d0e1728 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4590
2 locks held by syz-executor.3/10359:
#0: ffff88808b8a4910 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:786 [inline]
#0: ffff88808b8a4910 (&sb->s_type->i_mutex_key#14){+.+.}-{3:3}, at: __sock_release+0x86/0x280 net/socket.c:648
#1: ffffffff8d0e1728 (rtnl_mutex){+.+.}-{3:3}, at: ip6mr_sk_done+0xe9/0x370 net/ipv6/ip6mr.c:1582
1 lock held by syz-executor.3/10361:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc2-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 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+0x3e5/0x4d0 kernel/kthread.c:319
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: 10361 Comm: syz-executor.3 Not tainted 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:234 [inline]
RIP: 0010:pvclock_clocksource_read+0xc2/0x530 arch/x86/kernel/pvclock.c:76
Code: 03 48 89 14 24 49 01 ed 4c 8d 43 18 48 01 e8 4c 8d 7b 10 48 89 44 24 20 4c 8d 53 17 4c 8d 73 1d 83 e1 fe 89 4c 24 08 0f 01 f9 <66> 90 48 c1 e2 20 48 8b 74 24 10 4c 89 c9 48 09 d0 41 0f b6 55 00
RSP: 0018:ffffc90000007b40 EFLAGS: 00000002
RAX: 00000000a5ef33d0 RBX: ffffffff8eef8000 RCX: 0000000000000000
RDX: 00000000000000fc RSI: ffffffff81929a9a RDI: ffffffff8eef801c
RBP: dffffc0000000000 R08: ffffffff8eef8018 R09: ffffffff8eef800f
R10: ffffffff8eef8017 R11: 0000000000000000 R12: ffffffff8eef8003
R13: fffffbfff1ddf001 R14: ffffffff8eef801d R15: ffffffff8eef8010
FS: 00007f0514aed700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562bbcc89a68 CR3: 00000000b10a8000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
kvm_clock_read arch/x86/kernel/kvmclock.c:88 [inline]
kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:100
sched_clock_cpu+0x15/0x1f0 kernel/sched/clock.c:371
local_clock include/linux/sched/clock.h:84 [inline]
cpu_clock_event_update kernel/events/core.c:10618 [inline]
cpu_clock_event_read+0x16/0x50 kernel/events/core.c:10651
perf_swevent_hrtimer+0x128/0x3f0 kernel/events/core.c:10534
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390
Code: 1d ad 59 bc 7e 65 8b 05 a6 59 bc 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 f5 31 09 00 e8 70 d6 35 00 fb 65 8b 05 88 59 bc 7e <85> c0 74 58 5b 5d c3 65 8b 05 d6 60 bc 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc900011b6be0 EFLAGS: 00000202
RAX: 0000000080000000 RBX: 00000000fffffe01 RCX: 1ffffffff1fa18ea
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8761a7f3 R08: 0000000000000001 R09: ffffffff8fcff947
R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff8b665dc0
R13: 0000000000028848 R14: 0000000000000000 R15: 0000000000000001
local_bh_enable include/linux/bottom_half.h:32 [inline]
get_next_corpse net/netfilter/nf_conntrack_core.c:2252 [inline]
nf_ct_iterate_cleanup+0x15a/0x450 net/netfilter/nf_conntrack_core.c:2275
nf_ct_iterate_cleanup_net net/netfilter/nf_conntrack_core.c:2363 [inline]
nf_ct_iterate_cleanup_net+0x236/0x400 net/netfilter/nf_conntrack_core.c:2347
masq_device_event+0xae/0xe0 net/netfilter/nf_nat_masquerade.c:88
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1996
call_netdevice_notifiers_extack net/core/dev.c:2008 [inline]
call_netdevice_notifiers net/core/dev.c:2022 [inline]
__dev_notify_flags+0x1da/0x2b0 net/core/dev.c:8797
dev_change_flags+0x112/0x170 net/core/dev.c:8833
do_setlink+0x96d/0x3970 net/core/rtnetlink.c:2719
rtnl_group_changelink net/core/rtnetlink.c:3242 [inline]
__rtnl_newlink+0xc06/0x1750 net/core/rtnetlink.c:3396
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506
rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5572
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
____sys_sendmsg+0x6e8/0x810 net/socket.c:2409
___sys_sendmsg+0xf3/0x170 net/socket.c:2463
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2492
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: 0033:0x7f0517576739
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0514aed188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f051767af80 RCX: 00007f0517576739
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000007
RBP: 00007f05175d0cc4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f051767af80
R13: 00007ffe1b64ca7f R14: 00007f0514aed300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 03 48 89 add -0x77(%rax),%ecx
3: 14 24 adc $0x24,%al
5: 49 01 ed add %rbp,%r13
8: 4c 8d 43 18 lea 0x18(%rbx),%r8
c: 48 01 e8 add %rbp,%rax
f: 4c 8d 7b 10 lea 0x10(%rbx),%r15
13: 48 89 44 24 20 mov %rax,0x20(%rsp)
18: 4c 8d 53 17 lea 0x17(%rbx),%r10
1c: 4c 8d 73 1d lea 0x1d(%rbx),%r14
20: 83 e1 fe and $0xfffffffe,%ecx
23: 89 4c 24 08 mov %ecx,0x8(%rsp)
27: 0f 01 f9 rdtscp
* 2a: 66 90 xchg %ax,%ax <-- trapping instruction
2c: 48 c1 e2 20 shl $0x20,%rdx
30: 48 8b 74 24 10 mov 0x10(%rsp),%rsi
35: 4c 89 c9 mov %r9,%rcx
38: 48 09 d0 or %rdx,%rax
3b: 41 0f b6 55 00 movzbl 0x0(%r13),%edx