rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10499 ticks this GP) idle=137/1/0x4000000000000000 softirq=50581/50581 fqs=5043
(t=10500 jiffies g=83353 q=742)
NMI backtrace for cpu 1
CPU: 1 PID: 7055 Comm: syz-executor.4 Not tainted 5.17.0-rc1-syzkaller-00418-gf8c7e4ede46f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:604 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq.cold+0x5c/0x759 kernel/rcu/tree.c:2617
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
RIP: 0010:atomic64_read include/linux/atomic/atomic-instrumented.h:647 [inline]
RIP: 0010:perf_event_count kernel/events/core.c:4466 [inline]
RIP: 0010:perf_output_read_group kernel/events/core.c:6991 [inline]
RIP: 0010:perf_output_read+0xc66/0x1310 kernel/events/core.c:7028
Code: 44 24 10 be 08 00 00 00 4c 8d a0 b8 00 00 00 48 8b a8 b0 00 00 00 4c 89 e7 e8 36 8b 27 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 <0f> 85 21 04 00 00 4c 8b 7c 24 10 31 ff 4c 8b 74 24 40 49 8b 87 b8
RSP: 0018:ffffc90002cf7118 EFLAGS: 00000246
RAX: 1ffff1100f54a258 RBX: ffffc90002cf7460 RCX: ffffffff8196da6a
RDX: ffffed100f54a259 RSI: 0000000000000008 RDI: ffff88807aa512c0
RBP: 0000000000000178 R08: 0000000000000000 R09: ffff88807aa512c7
R10: ffffed100f54a258 R11: 0000000000000001 R12: ffff88807aa512c0
R13: dffffc0000000000 R14: ffff88807aa51208 R15: 0000000000000010
perf_output_sample+0xd12/0x1d80 kernel/events/core.c:7075
__perf_event_output kernel/events/core.c:7560 [inline]
perf_event_output_forward+0x119/0x280 kernel/events/core.c:7574
__perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9274
perf_swevent_overflow kernel/events/core.c:9350 [inline]
perf_swevent_event+0x347/0x550 kernel/events/core.c:9378
do_perf_sw_event kernel/events/core.c:9491 [inline]
___perf_sw_event+0x31a/0x570 kernel/events/core.c:9522
__perf_sw_event+0x54/0x130 kernel/events/core.c:9534
perf_sw_event include/linux/perf_event.h:1178 [inline]
mm_account_fault mm/memory.c:4766 [inline]
handle_mm_fault+0x5ef/0x790 mm/memory.c:4817
do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397
handle_page_fault arch/x86/mm/fault.c:1484 [inline]
exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1540
asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:196
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 0f 82 60 ff ff ff 89 d1 a4 31 c0 0f 01 ca c3 89 ca eb 06 66 0f 1f 44 00 00 83 f8 12 74
RSP: 0018:ffffc90002cf79a0 EFLAGS: 00050206
RAX: 0000000000000001 RBX: 0000000000008000 RCX: 0000000000006fcb
RDX: 0000000000008000 RSI: 0000000020f76000 RDI: ffff888027b91035
RBP: ffff888027b90000 R08: 0000000000000001 R09: ffff888027b97fff
R10: ffffed1004f72fff R11: 0000000000000000 R12: 0000000020f74fcb
R13: 0000000020f7cfcb R14: 0000000000000000 R15: ffffc90002cf7d70
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:166
copyin lib/iov_iter.c:765 [inline]
_copy_from_iter+0x2a3/0x1410 lib/iov_iter.c:765
copy_from_iter include/linux/uio.h:171 [inline]
copy_from_iter_full include/linux/uio.h:177 [inline]
skb_do_copy_data_nocache include/net/sock.h:2189 [inline]
skb_copy_to_page_nocache include/net/sock.h:2215 [inline]
tcp_sendmsg_locked+0x12f3/0x3050 net/ipv4/tcp.c:1335
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1441
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:819
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
__sys_sendto+0x21c/0x320 net/socket.c:2040
__do_sys_sendto net/socket.c:2052 [inline]
__se_sys_sendto net/socket.c:2048 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2048
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc8ce0e2059
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc8cca57168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fc8ce1f4f60 RCX: 00007fc8ce0e2059
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000017
RBP: 00007fc8ce13c08d R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeafa2499f R14: 00007fc8cca57300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 44 24 10 rex.R and $0x10,%al
3: be 08 00 00 00 mov $0x8,%esi
8: 4c 8d a0 b8 00 00 00 lea 0xb8(%rax),%r12
f: 48 8b a8 b0 00 00 00 mov 0xb0(%rax),%rbp
16: 4c 89 e7 mov %r12,%rdi
19: e8 36 8b 27 00 callq 0x278b54
1e: 4c 89 e0 mov %r12,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
* 2a: 0f 85 21 04 00 00 jne 0x451 <-- trapping instruction
30: 4c 8b 7c 24 10 mov 0x10(%rsp),%r15
35: 31 ff xor %edi,%edi
37: 4c 8b 74 24 40 mov 0x40(%rsp),%r14
3c: 49 rex.WB
3d: 8b .byte 0x8b
3e: 87 .byte 0x87
3f: b8 .byte 0xb8