INFO: rcu_preempt detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=50143, c=50142, q=626)
All QSes seen, last rcu_preempt kthread activity 10500 (4295085250-4295074750), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.5 R running task 29312 22732 29950 0x00000008
Call Trace:
sched_show_task kernel/sched/core.c:5168 [inline]
sched_show_task.cold+0x2e3/0x347 kernel/sched/core.c:5143
print_other_cpu_stall kernel/rcu/tree.c:1501 [inline]
check_cpu_stall kernel/rcu/tree.c:1616 [inline]
__rcu_pending kernel/rcu/tree.c:3390 [inline]
rcu_pending kernel/rcu/tree.c:3452 [inline]
rcu_check_callbacks.cold+0xd3f/0xdaa kernel/rcu/tree.c:2792
update_process_times+0x29/0x60 kernel/time/timer.c:1590
tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
__run_hrtimer kernel/time/hrtimer.c:1223 [inline]
__hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:__read_once_size_nocheck.constprop.0+0x3/0x10 include/linux/compiler.h:201
RSP: 0000:ffff8880aea077e8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 1ffff11015d40efe RCX: 1ffff11015d40f23
RDX: ffff88821605fe30 RSI: ffff8880aea07810 RDI: ffff88821605fe28
RBP: ffff88821605fe28 R08: 0000000000000000 R09: ffff88821605fe20
R10: ffff8880aea0793d R11: 0000000000058071 R12: ffff8880aea07948
R13: dffffc0000000000 R14: ffff88821605fe48 R15: 0000000000000001
deref_stack_reg arch/x86/kernel/unwind_orc.c:292 [inline]
deref_stack_reg+0x8a/0xc0 arch/x86/kernel/unwind_orc.c:286
unwind_next_frame+0xeff/0x17a0 arch/x86/kernel/unwind_orc.c:474
__save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
save_stack+0x32/0xa0 mm/kasan/kasan.c:447
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc mm/kasan/kasan.c:551 [inline]
kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
kmem_cache_alloc+0x127/0x770 mm/slab.c:3552
__build_skb+0x2e/0x2d0 net/core/skbuff.c:281
__netdev_alloc_skb+0x27e/0x430 net/core/skbuff.c:426
netdev_alloc_skb include/linux/skbuff.h:2648 [inline]
dev_alloc_skb include/linux/skbuff.h:2661 [inline]
send_hsr_supervision_frame+0x107/0xf40 net/hsr/hsr_device.c:265
hsr_announce+0xf0/0x330 net/hsr/hsr_device.c:350
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
__do_softirq+0x254/0x9bf kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x15b/0x1a0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3611
RSP: 0000:ffff88821605fe20 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0fa2cd3 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888097c2cf3c
RBP: ffffed1012f858d8 R08: 0000014170a79717 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888097c2c6c0
R13: ffffffff87d16698 R14: 0000000000000000 R15: 0000000000000000
retint_kernel+0x1b/0x2d
RIP: 0010:exit_to_usermode_loop+0x6c/0x220 arch/x86/entry/common.c:152
RSP: 0000:ffff88821605fef8 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff09
RAX: 0000000000040000 RBX: 0000000000000008 RCX: ffffc90008638000
RDX: 0000000000020894 RSI: ffffffff81006125 RDI: ffff888097c2cf3c
RBP: dffffc0000000000 R08: 0000014170a77373 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffed1012f858d8
R13: ffff88821605ff58 R14: ffff888097c2c6c0 R15: ffffffff87d16698
prepare_exit_to_usermode+0x1af/0x210 arch/x86/entry/common.c:199
retint_user+0x8/0x18
RIP: 0033:0x4052a5
RSP: 002b:00007efcebab3c80 EFLAGS: 00000217 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 00007efcebab46d4 RCX: 000000000045c849
RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 000000000076bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000000c5 R14: 00000000004c351f R15: 000000000076bfac
rcu_preempt kthread starved for 10500 jiffies! g50143 c50142 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_preempt R running task 28832 8 2 0x80000000
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
INFO: rcu_sched detected stalls on CPUs/tasks:
1-...: (1 GPs behind) idle=312/140000000000002/0 softirq=155637/155638 fqs=0
(detected by 0, t=10556 jiffies, g=37313, c=37312, q=4)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22735 Comm: syz-executor.2 Not tainted 4.14.174-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88805e8664c0 task.stack: ffff88821a8e0000
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:60
RSP: 0018:ffff8880aeb07a70 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88806fbe83c8 RCX: 000000009bfa1c25
RDX: 0000000000010100 RSI: ffff88805e866d68 RDI: ffff88806fbe8400
RBP: ffff8880aeb25b78 R08: 00000000000047f0 R09: ffffffff8a07f800
R10: ffff88805e866d68 R11: ffff88805e8664c0 R12: ffff8880aeb25b40
R13: ffff8880aeb25b40 R14: dffffc0000000000 R15: 0000000000000001
FS: 00007f77f42f0700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33923000 CR3: 0000000057aba000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:1238 [inline]
__hrtimer_run_queues+0x836/0xbb0 kernel/time/hrtimer.c:1287
hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:__mod_timer kernel/time/timer.c:938 [inline]
RIP: 0010:mod_timer+0x77/0xe70 kernel/time/timer.c:1069
RSP: 0018:ffff8880aeb07cc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 1ffff1101037ab0d RBX: 000000010001cd0f RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 000000010001cd0f RDI: ffff888081bd5868
RBP: ffff888081bd5850 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff11015d60fb2 R14: ffff888081bd5840 R15: 0000000000000001
call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649
__do_softirq+0x254/0x9bf kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x15b/0x1a0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:drop_futex_key_refs.isra.0+0x4c/0xa0 kernel/futex.c:488
RSP: 0018:ffff88821a8e7a88 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff88821a8e7bc8 RCX: ffffc9001308d000
RDX: 0000000000000000 RSI: ffffffff8150d0a7 RDI: ffff8880a525a680
RBP: ffff8880a525a680 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 000000000076bf08
unqueue_me kernel/futex.c:2419 [inline]
futex_wait+0x482/0x540 kernel/futex.c:2825
do_futex+0x129/0x1840 kernel/futex.c:3903
SYSC_futex kernel/futex.c:3963 [inline]
SyS_futex+0x1e8/0x2c0 kernel/futex.c:3931
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c849
RSP: 002b:00007f77f42efcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000076bf08 RCX: 000000000045c849
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000076bf08
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000076bf0c
R13: 00007ffd6155a86f R14: 00007f77f42f09c0 R15: 000000000076bf0c
Code: 00 48 c7 c7 c0 90 ad 86 4c 89 3d dc ae fe 08 41 bd f4 ff ff ff e8 6c bc ee ff 48 c7 05 c6 ae fe 08 00 00 00 00 e9 be ed ff ff 90 <65> 48 8b 04 25 40 ee 01 00 48 85 c0 74 1a 65 8b 15 3b a6 a7 7e
rcu_sched kthread starved for 10556 jiffies! g37313 c37312 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_sched R running task 29280 9 2 0x80000000
Call Trace:
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
audit: type=1400 audit(1585023438.605:587): avc: denied { map } for pid=22738 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1