rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (1 GPs behind) idle=def/1/0x4000000000000000 softirq=56564/56565 fqs=5247
(t=10502 jiffies g=91145 q=1007)
NMI backtrace for cpu 0
CPU: 0 PID: 14483 Comm: syz-executor.4 Not tainted 5.16.0-next-20220118-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:__sanitizer_cov_trace_pc+0x5c/0x60 kernel/kcov.c:210
Code: 82 88 15 00 00 83 f8 02 75 20 48 8b 8a 90 15 00 00 8b 92 8c 15 00 00 48 8b 01 48 83 c0 01 48 39 c2 76 07 48 89 34 c1 48 89 01 0f 1f 00 41 55 41 54 49 89 fc 55 48 bd eb 83 b5 80 46 86 c8 61
RSP: 0018:ffffc90004447110 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffffc90004447460 RCX: ffffc900108ea000
RDX: 0000000000040000 RSI: ffffffff8197c86b RDI: ffff888013db4c70
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880197b4f6f
R10: ffffffff8197cb04 R11: 0000000000000001 R12: ffffc90004447260
R13: dffffc0000000000 R14: ffff888013db4c60 R15: 0000000000000010
perf_output_read_group kernel/events/core.c:6942 [inline]
perf_output_read+0xbcb/0x1310 kernel/events/core.c:6982
perf_output_sample+0xd12/0x1d80 kernel/events/core.c:7029
__perf_event_output kernel/events/core.c:7514 [inline]
perf_event_output_forward+0x119/0x280 kernel/events/core.c:7528
__perf_event_overflow+0x13c/0x3d0 kernel/events/core.c:9228
perf_swevent_overflow kernel/events/core.c:9304 [inline]
perf_swevent_event+0x347/0x550 kernel/events/core.c:9332
do_perf_sw_event kernel/events/core.c:9445 [inline]
___perf_sw_event+0x31a/0x570 kernel/events/core.c:9476
__perf_sw_event+0x54/0x130 kernel/events/core.c:9488
perf_sw_event include/linux/perf_event.h:1187 [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:ffffc90004447998 EFLAGS: 00050206
RAX: 0000000000000001 RBX: 0000000000008000 RCX: 0000000000005fcb
RDX: 0000000000008000 RSI: 0000000020ea7000 RDI: ffff88804b1ba035
RBP: ffff88804b1b8000 R08: 0000000000000001 R09: ffff88804b1bffff
R10: ffffed1009637fff R11: 0000000000000000 R12: 0000000020ea4fcb
R13: 0000000020eacfcb R14: 0000000000000000 R15: ffffc90004447d70
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+0x2a3/0x15b0 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+0x12e9/0x3190 net/ipv4/tcp.c:1334
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1440
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: 0033:0x7f064e69dfe9
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:00007f064d013168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f064e7b0f60 RCX: 00007f064e69dfe9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000017
RBP: 00007f064e6f808d R08: 0000000000000000 R09: 0000000000000053
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff88ea9acf R14: 00007f064d013300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 88 15 00 00 83 f8 mov %dl,-0x77d0000(%rip) # 0xf8830006
6: 02 75 20 add 0x20(%rbp),%dh
9: 48 8b 8a 90 15 00 00 mov 0x1590(%rdx),%rcx
10: 8b 92 8c 15 00 00 mov 0x158c(%rdx),%edx
16: 48 8b 01 mov (%rcx),%rax
19: 48 83 c0 01 add $0x1,%rax
1d: 48 39 c2 cmp %rax,%rdx
20: 76 07 jbe 0x29
22: 48 89 34 c1 mov %rsi,(%rcx,%rax,8)
26: 48 89 01 mov %rax,(%rcx)
* 29: c3 retq <-- trapping instruction
2a: 0f 1f 00 nopl (%rax)
2d: 41 55 push %r13
2f: 41 54 push %r12
31: 49 89 fc mov %rdi,%r12
34: 55 push %rbp
35: 48 bd eb 83 b5 80 46 movabs $0x61c8864680b583eb,%rbp
3c: 86 c8 61