rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10499 ticks this GP) idle=f0a/1/0x4000000000000000 softirq=16611/16611 fqs=5163
(t=10500 jiffies g=19237 q=1665)
NMI backtrace for cpu 0
CPU: 0 PID: 10876 Comm: syz-executor.5 Not tainted 5.11.0-rc6-next-20210203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:165 [inline]
rcu_dump_cpu_stacks+0x222/0x2a7 kernel/rcu/tree_stall.h:341
print_cpu_stall kernel/rcu/tree_stall.h:622 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:697 [inline]
rcu_pending kernel/rcu/tree.c:3787 [inline]
rcu_sched_clock_irq.cold+0x522/0x1252 kernel/rcu/tree.c:2598
update_process_times+0x16d/0x200 kernel/time/timer.c:1796
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1369
__run_hrtimer kernel/time/hrtimer.c:1519 [inline]
__hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1583
hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1102
asm_call_irq_on_stack+0xf/0x20
__run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline]
run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline]
sysvec_apic_timer_interrupt+0xbd/0x100 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:86 [inline]
RIP: 0010:pvclock_clocksource_read+0xab/0x530 arch/x86/kernel/pvclock.c:76
Code: 03 48 8d 53 1b 49 89 c5 48 89 f8 48 89 7c 24 18 4c 8d 4b 0f 48 c1 e8 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
RSP: 0018:ffffc90001c7ef90 EFLAGS: 00000286
RAX: fffffbfff1e70803 RBX: ffffffff8f384000 RCX: 0000000000000008
RDX: ffffffff8f38401b RSI: ffffffff818ebaba RDI: ffffffff8f38401c
RBP: dffffc0000000000 R08: ffffffff8f384018 R09: ffffffff8f38400f
R10: ffffffff818f5801 R11: 0000000000000001 R12: ffffffff8f384003
R13: fffffbfff1e70801 R14: ffff88806d62e000 R15: ffffffff8f384010
kvm_clock_read arch/x86/kernel/kvmclock.c:89 [inline]
kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:101
paravirt_sched_clock arch/x86/include/asm/paravirt.h:22 [inline]
sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:252
sched_clock_cpu+0x18/0x1f0 kernel/sched/clock.c:371
local_clock include/linux/sched/clock.h:84 [inline]
cpu_clock_event_update kernel/events/core.c:10463 [inline]
cpu_clock_event_read+0x16/0x50 kernel/events/core.c:10496
perf_output_read_group kernel/events/core.c:6727 [inline]
perf_output_read+0xf02/0x1310 kernel/events/core.c:6766
perf_output_sample+0xd12/0x1be0 kernel/events/core.c:6813
__perf_event_output kernel/events/core.c:7298 [inline]
perf_event_output_forward+0x132/0x270 kernel/events/core.c:7312
__perf_event_overflow+0x13c/0x370 kernel/events/core.c:8986
perf_swevent_overflow kernel/events/core.c:9062 [inline]
perf_swevent_event+0x347/0x550 kernel/events/core.c:9090
do_perf_sw_event kernel/events/core.c:9203 [inline]
___perf_sw_event+0x31a/0x570 kernel/events/core.c:9234
__perf_sw_event+0x54/0x130 kernel/events/core.c:9246
perf_sw_event include/linux/perf_event.h:1167 [inline]
mm_account_fault mm/memory.c:4516 [inline]
handle_mm_fault+0x5da/0x7e0 mm/memory.c:4567
do_user_addr_fault+0x458/0xc60 arch/x86/mm/fault.c:1371
handle_page_fault arch/x86/mm/fault.c:1426 [inline]
exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1482
asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:580
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8
RSP: 0018:ffffc90001c7f918 EFLAGS: 00010206
RAX: 0000000000000001 RBX: 0000000000008000 RCX: 0000000000000fcb
RDX: 0000000000008000 RSI: 0000000020fbc000 RDI: ffff88806e9e7035
RBP: ffff88806e9e0000 R08: 0000000000000001 R09: ffff88806e9e7fff
R10: ffffed100dd3cfff R11: 0000000000000000 R12: 0000000020fb4fcb
R13: 0000000020fbcfcb R14: 0000000000000000 R15: 0000000000008000
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline]
copyin.part.0+0xe4/0x110 lib/iov_iter.c:200
copyin lib/iov_iter.c:850 [inline]
_copy_from_iter_full+0x2a6/0x1120 lib/iov_iter.c:850
copy_from_iter_full include/linux/uio.h:164 [inline]
skb_do_copy_data_nocache+0x145/0x2c0 include/net/sock.h:2063
skb_copy_to_page_nocache include/net/sock.h:2089 [inline]
tcp_sendmsg_locked+0x1360/0x2e40 net/ipv4/tcp.c:1368
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1465
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:821
sock_sendmsg_nosec net/socket.c:654 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:674
__sys_sendto+0x21c/0x320 net/socket.c:1977
__do_sys_sendto net/socket.c:1989 [inline]
__se_sys_sendto net/socket.c:1985 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:1985
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465b09
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:00007f35a2153188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465b09
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000008
RBP: 00000000004b069f R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007fff7848f11f R14: 00007f35a2153300 R15: 0000000000022000