INFO: rcu_sched detected stalls on CPUs/tasks:
(detected by 0, t=10502 jiffies, g=14340, c=14339, q=0)
All QSes seen, last rcu_sched kthread activity 10502 (4295034590-4295024088), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.2 R running task 29056 8084 6370 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:sctp_transport_reset_hb_timer+0x10c/0x1d0 net/sctp/transport.c:213
RSP: 0018:ffff8880aea07a80 EFLAGS: 00000283 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: 00000000000000b1 RCX: 0000000000000000
RDX: 1ffff11011f2a1ef RSI: 00000001000106dc RDI: ffff88808f950f78
RBP: ffff88808f950dc0 R08: ffff888064b6d0c4 R09: ffffed100c96da1f
R10: ffffed100c96da1e R11: ffff888064b6d0f3 R12: 00000001000112ec
R13: ffff8880aea07c48 R14: dffffc0000000000 R15: ffff888090ce8240
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1653 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1179 [inline]
sctp_do_sm+0x2d8d/0x4a90 net/sctp/sm_sideeffect.c:1150
sctp_generate_heartbeat_event+0x1da/0x3f0 net/sctp/sm_sideeffect.c:391
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:arch_local_save_flags arch/x86/include/asm/paravirt.h:774 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:796 [inline]
RIP: 0010:lock_is_held_type+0x82/0x210 kernel/locking/lockdep.c:4032
RSP: 0018:ffff888218b379c0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000286 RBX: ffff88805d672400 RCX: 1ffffffff10279b4
RDX: dffffc0000000000 RSI: 00000000ffffffff RDI: ffff88805d672c84
RBP: ffffffff87d842e0 R08: 000000cb7a2f6245 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 000000000002b540 R14: ffff88805d672400 R15: ffff8880aea2b540
lock_is_held include/linux/lockdep.h:437 [inline]
schedule_debug kernel/sched/core.c:3206 [inline]
__schedule+0xde1/0x1ca0 kernel/sched/core.c:3308
preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:3611
retint_kernel+0x1b/0x2d
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:hb_waiters_pending kernel/futex.c:389 [inline]
RIP: 0010:futex_wake+0xe7/0x3d0 kernel/futex.c:1691
RSP: 0018:ffff888218b37b70 EFLAGS: 00000a06 ORIG_RAX: ffffffffffffff10
RAX: 1ffff9200018dd60 RBX: ffffc90000c6eb00 RCX: 000000001f90bb9f
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000200
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 1ffff11043166ff9 R11: 0000000000000000 R12: 000000000078bf0c
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
do_futex+0x264/0x1850 kernel/futex.c:3924
SYSC_futex kernel/futex.c:3980 [inline]
SyS_futex+0x1e8/0x2c0 kernel/futex.c:3948
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f2816565cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000078bf08 RCX: 000000000045c829
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 000000000078bf0c
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffe5f97911f R14: 00007f28165669c0 R15: 000000000078bf0c
rcu_sched kthread starved for 10502 jiffies! g14340 c14339 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched R running task 29920 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
INFO: rcu_preempt detected stalls on CPUs/tasks:
1-...: (1 GPs behind) idle=efe/140000000000001/0 softirq=101499/101502 fqs=2
(detected by 0, t=10556 jiffies, g=28497, c=28496, q=824)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8082 Comm: syz-executor.4 Not tainted 4.14.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809b0c8000 task.stack: ffff888218c78000
RIP: 0010:debug_lockdep_rcu_enabled kernel/rcu/update.c:299 [inline]
RIP: 0010:rcu_read_lock_sched_held+0x23/0x130 kernel/rcu/update.c:109
RSP: 0018:ffff8880aeb07ba0 EFLAGS: 00000002
RAX: 0000000000000007 RBX: ffffffff87a0d1a0 RCX: 1ffffffff1124508
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88809b0c8884
RBP: ffff888218c7f508 R08: 000000e40c2dd341 R09: ffff88821fff7048
R10: ffff88821fff7050 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f5739479700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000078c000 CR3: 000000008f9a1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_local_timer_entry arch/x86/include/asm/trace/irq_vectors.h:56 [inline]
smp_apic_timer_interrupt+0x42d/0x5e0 arch/x86/kernel/apic/apic.c:1099
apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:411 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x264/0x950 kernel/locking/qspinlock.c:465
RSP: 0018:ffff8880aeb07c90 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000001 RBX: ffff8880aeb2c0c0 RCX: ffffed100d2c9811
RDX: 000000000000125a RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffff88806964c088 R08: 0000000000000000 R09: ffffffff8a07f0b0
R10: ffff88809b0c88b0 R11: ffff88809b0c8000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806964c089 R15: ffffed1015d65820
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:669 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:52 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:90 [inline]
do_raw_spin_lock+0x189/0x230 kernel/locking/spinlock_debug.c:113
spin_lock include/linux/spinlock.h:317 [inline]
sctp_generate_heartbeat_event+0x96/0x3f0 net/sctp/sm_sideeffect.c:371
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:__sanitizer_cov_trace_pc+0x23/0x50 kernel/kcov.c:68
RSP: 0018:ffff888218c7f5b8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffff88809b0c8000 RBX: dffffc0000000000 RCX: ffffc90008a6c000
RDX: 0000000000000001 RSI: ffffffff86e45640 RDI: ffffffff86e45680
RBP: ffffffff86e45680 R08: 0000000000000001 R09: ffff888218c7fb80
R10: ffff888218c7f81d R11: 0000000000058071 R12: 0000000000000001
R13: ffffffff86e45640 R14: ffffffff81004007 R15: 000000000002b540
check_preemption_disabled+0x15/0x240 lib/smp_processor_id.c:14
__schedule+0x61/0x1ca0 kernel/sched/core.c:3304
preempt_schedule_common+0x4a/0xc0 kernel/sched/core.c:3508
___preempt_schedule+0x16/0x18
unwind_next_frame+0xbdf/0x17a0 arch/x86/kernel/unwind_orc.c:498
__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
slab_post_alloc_hook mm/slab.h:442 [inline]
slab_alloc mm/slab.c:3390 [inline]
__do_kmalloc mm/slab.c:3718 [inline]
__kmalloc_track_caller+0x13d/0x7b0 mm/slab.c:3735
kmemdup+0x23/0x50 mm/util.c:118
kmemdup include/linux/string.h:420 [inline]
selinux_cred_prepare+0x44/0xa0 security/selinux/hooks.c:3849
security_prepare_creds+0x76/0xb0 security/security.c:1008
prepare_creds+0x2cc/0x380 kernel/cred.c:282
copy_creds+0x72/0x4d0 kernel/cred.c:348
copy_process.part.0+0x868/0x6a50 kernel/fork.c:1644
copy_process kernel/fork.c:1586 [inline]
_do_fork+0x180/0xc80 kernel/fork.c:2070
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c829
RSP: 002b:00007f5739478c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00000000004da840 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000030020100
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000076 R14: 00000000004c311e R15: 00007f57394796d4
Code: 0f 1f 84 00 00 00 00 00 48 c7 c0 44 28 92 88 53 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 <38> d0 7c 08 84 d2 0f 85 ac 00 00 00 8b 0d df 31 47 07 85 c9 74
rcu_preempt kthread starved for 10550 jiffies! g28497 c28496 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt R running task 29920 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