INFO: task syz-executor.5:22130 blocked for more than 143 seconds.
Not tainted 5.7.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D24648 22130 7566 0x00000004
Call Trace:
context_switch kernel/sched/core.c:3367 [inline]
__schedule+0x937/0x1ff0 kernel/sched/core.c:4083
rwsem_down_write_slowpath+0x90a/0xf90 kernel/locking/rwsem.c:1216
__sched_text_start+0x8/0x8
schedule+0xd0/0x2a0 kernel/sched/core.c:4158
rwsem_down_write_slowpath+0x706/0xf90 kernel/locking/rwsem.c:1235
pcpu_alloc+0xfed/0x13b0 mm/percpu.c:1703
rwsem_mark_wake+0x8d0/0x8d0 include/linux/compiler.h:199
lock_acquire+0x1f2/0x8f0 kernel/locking/lockdep.c:4934
register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
lock_release+0x800/0x800 kernel/locking/lockdep.c:4689
__down_write kernel/locking/rwsem.c:1389 [inline]
down_write+0x137/0x150 kernel/locking/rwsem.c:1532
atomic64_try_cmpxchg include/asm-generic/atomic-instrumented.h:1504 [inline]
atomic_long_try_cmpxchg_acquire include/asm-generic/atomic-long.h:442 [inline]
__down_write kernel/locking/rwsem.c:1387 [inline]
down_write+0xb2/0x150 kernel/locking/rwsem.c:1532
__down_write kernel/locking/rwsem.c:1389 [inline]
down_write+0x137/0x150 kernel/locking/rwsem.c:1532
__down_timeout+0x2d0/0x2d0
pcpu_alloc+0x128/0x13b0 mm/percpu.c:1740
register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
raw_init+0x296/0x340 net/can/raw.c:339
raw_sock_no_ioctlcmd+0x10/0x10 net/can/raw.c:843
can_create+0x27c/0x500 net/can/af_can.c:168
__sock_create+0x3cb/0x730 net/socket.c:1433
sock_create net/socket.c:1484 [inline]
__sys_socket+0xef/0x200 net/socket.c:1526
move_addr_to_kernel+0x70/0x70 net/socket.c:195
__do_sys_clock_gettime kernel/time/posix-timers.c:1094 [inline]
__se_sys_clock_gettime kernel/time/posix-timers.c:1082 [inline]
__x64_sys_clock_gettime+0x165/0x240 kernel/time/posix-timers.c:1082
__ia32_sys_clock_settime+0x260/0x260 kernel/time/posix-timers.c:1410
trace_hardirqs_off_caller+0x55/0x230 kernel/trace/trace_preemptirq.c:73
__do_sys_socket net/socket.c:1535 [inline]
__se_sys_socket net/socket.c:1533 [inline]
__x64_sys_socket+0x6f/0xb0 net/socket.c:1533
__trace_hardirqs_on_caller kernel/locking/lockdep.c:3657 [inline]
lockdep_hardirqs_on+0x463/0x620 kernel/locking/lockdep.c:3702
do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
entry_SYSCALL_64_after_hwframe+0x49/0xb3
Showing all locks held in the system:
3 locks held by kworker/u4:2/33:
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: __write_once_size include/linux/compiler.h:226 [inline]
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:855 [inline]
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:40 [inline]
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:615 [inline]
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:642 [inline]
#0: ffff8880a9771938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x844/0x16a0 kernel/workqueue.c:2239
#1: ffffc90000e37dc0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x878/0x16a0 kernel/workqueue.c:2243
#2: ffffffff8a5772f0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xa50 net/core/net_namespace.c:565
1 lock held by khungtaskd/1122:
#0: ffffffff899bea80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5754
2 locks held by in:imklog/6834:
#0: ffff8880a35888b0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:826
#1: ffffffff899bea80 (rcu_read_lock){....}-{1:2}, at: is_bpf_text_address+0x0/0x160 kernel/bpf/core.c:691
1 lock held by syz-executor.5/22130:
#0: ffffffff8a5772f0 (pernet_ops_rwsem){++++}-{3:3}, at: register_netdevice_notifier+0x1e/0x270 net/core/dev.c:1729
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1122 Comm: khungtaskd Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x188/0x20d lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101
lapic_can_unplug_cpu.cold+0x3b/0x3b
nmi_trigger_cpumask_backtrace+0x231/0x27e lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
watchdog+0xa8c/0x1010 kernel/hung_task.c:289
reset_hung_task_detector+0x30/0x30 kernel/hung_task.c:243
kthread+0x388/0x470 kernel/kthread.c:268
kthread_mod_delayed_work+0x1a0/0x1a0 kernel/kthread.c:1090
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:759 [inline]
RIP: 0010:lock_pin_lock+0x29f/0x3b0 kernel/locking/lockdep.c:4994
Code: 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 f4 00 00 00 48 83 3d 7a 07 3c 08 00 74 34 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 89 d8 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3
RSP: 0018:ffffc90000da8be8 EFLAGS: 00000086
RAX: 1ffffffff132980c RBX: 00000000000046b5 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8393b549 RDI: 0000000000000086
RBP: ffff8880a95f0340 R08: ffff8880a95f0340 R09: fffff520001b517a
R10: 0000000000000003 R11: fffff520001b5179 R12: ffff8880a95f0c58
R13: ffffed10152be180 R14: ffff8880a95f0340 R15: ffff8880ae737998
FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f07b44f8000 CR3: 00000000943f8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rq_pin_lock kernel/sched/sched.h:1188 [inline]
rq_lock kernel/sched/sched.h:1263 [inline]
ttwu_queue kernel/sched/core.c:2390 [inline]
try_to_wake_up+0xaae/0x1780 kernel/sched/core.c:2626
migrate_swap_stop+0x9d0/0x9d0 kernel/sched/core.c:1812
lock_is_held include/linux/lockdep.h:406 [inline]
rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121
rcu_read_lock_any_held.part.0+0x50/0x50 arch/x86/include/asm/paravirt.h:754
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1405
__next_timer_interrupt+0x190/0x190 kernel/time/timer.c:1512
timer_fixup_init+0x60/0x60 kernel/time/timer.c:632
lock_downgrade+0x840/0x840 kernel/locking/lockdep.c:4579
lock_is_held include/linux/lockdep.h:406 [inline]
rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121
rcu_read_lock_any_held.part.0+0x50/0x50 arch/x86/include/asm/paravirt.h:754
__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
_raw_spin_unlock_irq+0x1f/0x80 kernel/locking/spinlock.c:199
__next_timer_interrupt+0x190/0x190 kernel/time/timer.c:1512
expire_timers kernel/time/timer.c:1450 [inline]
__run_timers kernel/time/timer.c:1774 [inline]
__run_timers kernel/time/timer.c:1741 [inline]
run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1787
add_timer+0x830/0x830 kernel/time/timer.c:893
lock_is_held include/linux/lockdep.h:406 [inline]
rcu_read_lock_sched_held+0x9c/0xd0 kernel/rcu/update.c:121
rcu_read_lock_any_held.part.0+0x50/0x50 arch/x86/include/asm/paravirt.h:754
__do_softirq+0x26c/0x9f7 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x192/0x1d0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:546 [inline]
smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d e4 14 58 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d d4 14 58 00 fb f4 cc 41 56 41 55 41 54 55 53 e8 03 94 90 f9 e8 5e 53 c9 fb 0f 1f
RSP: 0018:ffffc90000d3fdb8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff132980f RBX: ffff8880a95f0340 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a95f0c04
RBP: dffffc0000000000 R08: ffff8880a95f0340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffed10152be068
R13: 0000000000000001 R14: ffffffff8a895980 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:144 [inline]
default_idle+0x49/0x350 arch/x86/kernel/process.c:697
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x393/0x690 kernel/sched/idle.c:269
arch_cpu_idle_exit+0x70/0x70
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361
start_secondary+0x2f8/0x410 arch/x86/kernel/smpboot.c:268
set_cpu_sibling_map+0x1ed0/0x1ed0 arch/x86/kernel/smpboot.c:620
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242