INFO: rcu_preempt self-detected stall on CPU
1-...: (10499 ticks this GP) idle=15a/140000000000001/0 softirq=9668/9669 fqs=5209
(t=10500 jiffies g=1729 c=1728 q=2808)
NMI backtrace for cpu 1
CPU: 1 PID: 6280 Comm: syz-executor3 Not tainted 4.14.91+ #30
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x171/0x1bf kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3382 [inline]
rcu_pending kernel/rcu/tree.c:3444 [inline]
rcu_check_callbacks.cold.56+0x478/0xd99 kernel/rcu/tree.c:2784
update_process_times+0x24/0x60 kernel/time/timer.c:1588
tick_sched_handle.isra.8+0x73/0x150 kernel/time/tick-sched.c:161
tick_sched_timer+0x7e/0x160 kernel/time/tick-sched.c:1321
__run_hrtimer kernel/time/hrtimer.c:1259 [inline]
__hrtimer_run_queues+0x2d0/0xc10 kernel/time/hrtimer.c:1323
hrtimer_interrupt+0x19a/0x440 kernel/time/hrtimer.c:1357
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x13a/0x600 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:60
RSP: 0018:ffff8881c58df2e8 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8881c58df5f8 RCX: 0000000000040000
RDX: ffffffff813e91c6 RSI: ffffc9000483d000 RDI: ffff8881d283dcd8
RBP: ffff8881d283dc50 R08: ffffed1038b93723 R09: ffffed1038b93722
R10: ffffed1038b93722 R11: ffff8881c5c9b917 R12: 0000000000000000
R13: 0000000000000008 R14: ffff8881c58df3c8 R15: dffffc0000000000
__read_once_size include/linux/compiler.h:183 [inline]
atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
atomic_long_read include/asm-generic/atomic-long.h:45 [inline]
perf_event_count kernel/events/core.c:3720 [inline]
perf_output_read_group kernel/events/core.c:5872 [inline]
perf_output_read+0x547/0xfb0 kernel/events/core.c:5909
perf_output_sample+0x10dd/0x1780 kernel/events/core.c:5951
__perf_event_output kernel/events/core.c:6261 [inline]
perf_event_output_forward+0x121/0x230 kernel/events/core.c:6274
__perf_event_overflow+0x116/0x320 kernel/events/core.c:7510
perf_swevent_overflow+0x166/0x1f0 kernel/events/core.c:7586
perf_swevent_event+0x19c/0x270 kernel/events/core.c:7619
do_perf_sw_event kernel/events/core.c:7727 [inline]
___perf_sw_event+0x296/0x480 kernel/events/core.c:7758
__perf_sw_event+0x3f/0x70 kernel/events/core.c:7770
perf_sw_event include/linux/perf_event.h:1041 [inline]
__do_page_fault+0x77f/0xb60 arch/x86/mm/fault.c:1466
page_fault+0x22/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0010:copy_user_enhanced_fast_string+0x7/0x10 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff8881c58dfb98 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000000100
RDX: 0000000000001000 RSI: 0000000020514000 RDI: ffff8881c9926f00
RBP: 0000000020513100 R08: 0000000000000000 R09: 0000000000000040
R10: ffffed1039324dff R11: ffff8881c9926fff R12: ffff8881c9926000
R13: 00007ffffffff000 R14: 0000000020514100 R15: ffff8881c9926000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
copy_page_from_iter_iovec lib/iov_iter.c:290 [inline]
copy_page_from_iter+0x320/0x7a0 lib/iov_iter.c:731
pipe_write+0x21a/0xd30 fs/pipe.c:434
call_write_iter include/linux/fs.h:1784 [inline]
new_sync_write fs/read_write.c:471 [inline]
__vfs_write+0x417/0x5c0 fs/read_write.c:484
vfs_write+0x17f/0x4d0 fs/read_write.c:546
SYSC_write fs/read_write.c:593 [inline]
SyS_write+0xc2/0x1a0 fs/read_write.c:585
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4579b9
RSP: 002b:00007fe94d249c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004579b9
RDX: 00000000fffffdbc RSI: 0000000020000100 RDI: 000000000000000a
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe94d24a6d4
R13: 00000000004c367d R14: 00000000004db550 R15: 00000000ffffffff
INFO: rcu_sched self-detected stall on CPU
1-...: (10491 ticks this GP) idle=15a/140000000000001/0 softirq=9669/9669 fqs=5217
INFO: rcu_sched detected stalls on CPUs/tasks:
(t=10538 jiffies g=1388 c=1387 q=121)
1-...: (10491 ticks this GP) idle=15a/140000000000001/0 softirq=9669/9669 fqs=5217
NMI backtrace for cpu 1
CPU: 1 PID: 6280 Comm: syz-executor3 Not tainted 4.14.91+ #30
(detected by 0, t=10538 jiffies, g=1388, c=1387, q=121)
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xb9/0x11b lib/dump_stack.c:53
nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
rcu_dump_cpu_stacks+0x171/0x1bf kernel/rcu/tree.c:1396
print_cpu_stall kernel/rcu/tree.c:1542 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3382 [inline]
rcu_pending kernel/rcu/tree.c:3444 [inline]
rcu_check_callbacks.cold.56+0x478/0xd99 kernel/rcu/tree.c:2784
update_process_times+0x24/0x60 kernel/time/timer.c:1588
tick_sched_handle.isra.8+0x73/0x150 kernel/time/tick-sched.c:161
tick_sched_timer+0x7e/0x160 kernel/time/tick-sched.c:1321
__run_hrtimer kernel/time/hrtimer.c:1259 [inline]
__hrtimer_run_queues+0x2d0/0xc10 kernel/time/hrtimer.c:1323
hrtimer_interrupt+0x19a/0x440 kernel/time/hrtimer.c:1357
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x13a/0x600 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:60
RSP: 0018:ffff8881c58df2e8 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8881c58df5f8 RCX: 0000000000040000
RDX: ffffffff813e91c6 RSI: ffffc9000483d000 RDI: ffff8881d283dcd8
RBP: ffff8881d283dc50 R08: ffffed1038b93723 R09: ffffed1038b93722
R10: ffffed1038b93722 R11: ffff8881c5c9b917 R12: 0000000000000000
R13: 0000000000000008 R14: ffff8881c58df3c8 R15: dffffc0000000000
__read_once_size include/linux/compiler.h:183 [inline]
atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
atomic_long_read include/asm-generic/atomic-long.h:45 [inline]
perf_event_count kernel/events/core.c:3720 [inline]
perf_output_read_group kernel/events/core.c:5872 [inline]
perf_output_read+0x547/0xfb0 kernel/events/core.c:5909
perf_output_sample+0x10dd/0x1780 kernel/events/core.c:5951
__perf_event_output kernel/events/core.c:6261 [inline]
perf_event_output_forward+0x121/0x230 kernel/events/core.c:6274
__perf_event_overflow+0x116/0x320 kernel/events/core.c:7510
perf_swevent_overflow+0x166/0x1f0 kernel/events/core.c:7586
perf_swevent_event+0x19c/0x270 kernel/events/core.c:7619
do_perf_sw_event kernel/events/core.c:7727 [inline]
___perf_sw_event+0x296/0x480 kernel/events/core.c:7758
__perf_sw_event+0x3f/0x70 kernel/events/core.c:7770
perf_sw_event include/linux/perf_event.h:1041 [inline]
__do_page_fault+0x77f/0xb60 arch/x86/mm/fault.c:1466
page_fault+0x22/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0010:copy_user_enhanced_fast_string+0x7/0x10 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff8881c58dfb98 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000000100
RDX: 0000000000001000 RSI: 0000000020514000 RDI: ffff8881c9926f00
RBP: 0000000020513100 R08: 0000000000000000 R09: 0000000000000040
R10: ffffed1039324dff R11: ffff8881c9926fff R12: ffff8881c9926000
R13: 00007ffffffff000 R14: 0000000020514100 R15: ffff8881c9926000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
copy_page_from_iter_iovec lib/iov_iter.c:290 [inline]
copy_page_from_iter+0x320/0x7a0 lib/iov_iter.c:731
pipe_write+0x21a/0xd30 fs/pipe.c:434
call_write_iter include/linux/fs.h:1784 [inline]
new_sync_write fs/read_write.c:471 [inline]
__vfs_write+0x417/0x5c0 fs/read_write.c:484
vfs_write+0x17f/0x4d0 fs/read_write.c:546
SYSC_write fs/read_write.c:593 [inline]
SyS_write+0xc2/0x1a0 fs/read_write.c:585
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4579b9
RSP: 002b:00007fe94d249c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004579b9
RDX: 00000000fffffdbc RSI: 0000000020000100 RDI: 000000000000000a
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe94d24a6d4
R13: 00000000004c367d R14: 00000000004db550 R15: 00000000ffffffff
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6280 Comm: syz-executor3 Not tainted 4.14.91+ #30
task: ffff8881c5b69780 task.stack: ffff8881c58d8000
RIP: 0010:rep_nop arch/x86/include/asm/processor.h:655 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:660 [inline]
RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:87 [inline]
RIP: 0010:native_queued_spin_lock_slowpath+0xc7/0x760 kernel/locking/qspinlock.c:313
RSP: 0018:ffff8881dbb07cd8 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffffffffa2cd8440 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 1ffffffff4607101
RBP: 0000000000000003 R08: 0000000000002d28 R09: ffffffffa3ce3120
R10: ffff8881c5b6a050 R11: 0000000000000001 R12: fffffbfff459b088
R13: 0000000000000001 R14: ffffffffa2cd8440 R15: ffffffffa2cd8440
FS: 00007fe94d24a700(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020514000 CR3: 00000001c6232002 CR4: 00000000001606a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
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+0x139/0x1c0 kernel/locking/spinlock_debug.c:113
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline]
_raw_spin_lock_irqsave+0x49/0x50 kernel/locking/spinlock.c:160
print_cpu_stall kernel/rcu/tree.c:1544 [inline]
check_cpu_stall kernel/rcu/tree.c:1610 [inline]
__rcu_pending kernel/rcu/tree.c:3382 [inline]
rcu_pending kernel/rcu/tree.c:3444 [inline]
rcu_check_callbacks.cold.56+0x480/0xd99 kernel/rcu/tree.c:2784
update_process_times+0x24/0x60 kernel/time/timer.c:1588
tick_sched_handle.isra.8+0x73/0x150 kernel/time/tick-sched.c:161
tick_sched_timer+0x7e/0x160 kernel/time/tick-sched.c:1321
__run_hrtimer kernel/time/hrtimer.c:1259 [inline]
__hrtimer_run_queues+0x2d0/0xc10 kernel/time/hrtimer.c:1323
hrtimer_interrupt+0x19a/0x440 kernel/time/hrtimer.c:1357
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline]
smp_apic_timer_interrupt+0x13a/0x600 arch/x86/kernel/apic/apic.c:1062
apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:60
RSP: 0018:ffff8881c58df2e8 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8881c58df5f8 RCX: 0000000000040000
RDX: ffffffff813e91c6 RSI: ffffc9000483d000 RDI: ffff8881d283dcd8
RBP: ffff8881d283dc50 R08: ffffed1038b93723 R09: ffffed1038b93722
R10: ffffed1038b93722 R11: ffff8881c5c9b917 R12: 0000000000000000
R13: 0000000000000008 R14: ffff8881c58df3c8 R15: dffffc0000000000
__read_once_size include/linux/compiler.h:183 [inline]
atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
atomic_long_read include/asm-generic/atomic-long.h:45 [inline]
perf_event_count kernel/events/core.c:3720 [inline]
perf_output_read_group kernel/events/core.c:5872 [inline]
perf_output_read+0x547/0xfb0 kernel/events/core.c:5909
perf_output_sample+0x10dd/0x1780 kernel/events/core.c:5951
__perf_event_output kernel/events/core.c:6261 [inline]
perf_event_output_forward+0x121/0x230 kernel/events/core.c:6274
__perf_event_overflow+0x116/0x320 kernel/events/core.c:7510
perf_swevent_overflow+0x166/0x1f0 kernel/events/core.c:7586
perf_swevent_event+0x19c/0x270 kernel/events/core.c:7619
do_perf_sw_event kernel/events/core.c:7727 [inline]
___perf_sw_event+0x296/0x480 kernel/events/core.c:7758
__perf_sw_event+0x3f/0x70 kernel/events/core.c:7770
perf_sw_event include/linux/perf_event.h:1041 [inline]
__do_page_fault+0x77f/0xb60 arch/x86/mm/fault.c:1466
page_fault+0x22/0x50 arch/x86/entry/entry_64.S:1104
RIP: 0010:copy_user_enhanced_fast_string+0x7/0x10 arch/x86/lib/copy_user_64.S:181
RSP: 0018:ffff8881c58dfb98 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000001000 RCX: 0000000000000100
RDX: 0000000000001000 RSI: 0000000020514000 RDI: ffff8881c9926f00
RBP: 0000000020513100 R08: 0000000000000000 R09: 0000000000000040
R10: ffffed1039324dff R11: ffff8881c9926fff R12: ffff8881c9926000
R13: 00007ffffffff000 R14: 0000000020514100 R15: ffff8881c9926000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:55 [inline]
copyin+0x99/0xc0 lib/iov_iter.c:146
copy_page_from_iter_iovec lib/iov_iter.c:290 [inline]
copy_page_from_iter+0x320/0x7a0 lib/iov_iter.c:731
pipe_write+0x21a/0xd30 fs/pipe.c:434
call_write_iter include/linux/fs.h:1784 [inline]
new_sync_write fs/read_write.c:471 [inline]
__vfs_write+0x417/0x5c0 fs/read_write.c:484
vfs_write+0x17f/0x4d0 fs/read_write.c:546
SYSC_write fs/read_write.c:593 [inline]
SyS_write+0xc2/0x1a0 fs/read_write.c:585
do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x4579b9
RSP: 002b:00007fe94d249c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004579b9
RDX: 00000000fffffdbc RSI: 0000000020000100 RDI: 000000000000000a
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe94d24a6d4
R13: 00000000004c367d R14: 00000000004db550 R15: 00000000ffffffff
Code: 04 24 40 38 c5 7c 08 84 c0 0f 85 91 05 00 00 8b 03 85 c0 75 14 f0 44 0f b1 2b 85 c0 75 df 5b 5d 41 5c 41 5d 41 5e 41 5f c3 f3 90 d0 81 fd 00 01 00 00 0f 84 40 04 00 00 89 ee 40 30 f6 85 f6