rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (10500 ticks this GP) idle=ed7/1/0x4000000000000000 softirq=20578/20578 fqs=5248
(t=10502 jiffies g=28873 q=548)
NMI backtrace for cpu 0
CPU: 0 PID: 8178 Comm: syz-executor.4 Not tainted 5.17.0-rc2-syzkaller #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:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 e1 4a 46 00 5d be 03 00 00 00 e9 f6 a9 66 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 b9 ca 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc900034e7110 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffc900034e7460 RCX: 0000000000000004
RDX: 0000000000000000 RSI: ffff888034c780c0 RDI: 0000000000000003
RBP: 00000000000000ca R08: 0000000000000000 R09: ffff888037bd20ff
R10: ffffffff8196dae2 R11: 0000000000000001 R12: ffff888037bd20f8
R13: dffffc0000000000 R14: 0000000000000004 R15: ffff888037bd2040
primary_event_id kernel/events/core.c:1462 [inline]
perf_output_read_group kernel/events/core.c:7008 [inline]
perf_output_read+0xca0/0x1310 kernel/events/core.c:7043
perf_output_sample+0xd12/0x1d40 kernel/events/core.c:7090
__perf_event_output kernel/events/core.c:7575 [inline]
perf_event_output_forward+0x119/0x280 kernel/events/core.c:7589
__perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9289
perf_swevent_overflow kernel/events/core.c:9365 [inline]
perf_swevent_event+0x347/0x550 kernel/events/core.c:9393
do_perf_sw_event kernel/events/core.c:9506 [inline]
___perf_sw_event+0x31a/0x570 kernel/events/core.c:9537
__perf_sw_event+0x54/0x130 kernel/events/core.c:9549
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:ffffc900034e79a0 EFLAGS: 00050206
RAX: 0000000000000001 RBX: 0000000000008000 RCX: 0000000000004fcb
RDX: 0000000000008000 RSI: 0000000020ec8000 RDI: ffff8880789ab035
RBP: ffff8880789a8000 R08: 0000000000000001 R09: ffff8880789affff
R10: ffffed100f135fff R11: 0000000000000000 R12: 0000000020ec4fcb
R13: 0000000020eccfcb R14: 0000000000000000 R15: ffffc900034e7d70
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: 0033:0x7fefe56bc059
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:00007fefe4031168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fefe57cef60 RCX: 00007fefe56bc059
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 000000000000000e
RBP: 00007fefe571608d R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb9d229cf R14: 00007fefe4031300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 48 89 ef mov %rbp,%rdi
3: 5d pop %rbp
4: e9 e1 4a 46 00 jmpq 0x464aea
9: 5d pop %rbp
a: be 03 00 00 00 mov $0x3,%esi
f: e9 f6 a9 66 02 jmpq 0x266aa0a
14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
1a: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi
21: e8 b4 ff ff ff callq 0xffffffda
26: 31 c0 xor %eax,%eax
28: c3 retq
29: 90 nop
* 2a: 65 8b 05 b9 ca 8a 7e mov %gs:0x7e8acab9(%rip),%eax # 0x7e8acaea <-- trapping instruction
31: 89 c1 mov %eax,%ecx
33: 48 8b 34 24 mov (%rsp),%rsi
37: 81 e1 00 01 00 00 and $0x100,%ecx
3d: 65 gs
3e: 48 rex.W
3f: 8b .byte 0x8b