rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=03b/1/0x4000000000000000 softirq=145807/145812 fqs=5172
(t=10500 jiffies g=251001 q=3932)
NMI backtrace for cpu 1
CPU: 1 PID: 6323 Comm: syz-executor.4 Not tainted 5.15.0-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:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 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:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
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:1421
__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:__rcu_read_unlock+0x4/0x570 kernel/rcu/tree_plugin.h:415
Code: e2 ee 5a 00 48 8b 44 24 08 4c 8b 04 24 e9 c8 fd ff ff e8 4f ef 5a 00 e9 8a fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 41 56 41 55 <41> 54 55 65 48 8b 2c 25 40 70 02 00 53 48 8d bd 3c 04 00 00 48 b8
RSP: 0018:ffffc90003d47ad8 EFLAGS: 00000246
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc9000a111000
RDX: 0000000000040000 RSI: ffffffff818534f8 RDI: 0000000000000003
RBP: ffff88806db86800 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff818534eb R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888021cf3af0 R15: 00000000fffffff3
rcu_read_unlock include/linux/rcupdate.h:720 [inline]
bpf_map_update_value.isra.0+0x30d/0x910 kernel/bpf/syscall.c:208
generic_map_update_batch+0x3f2/0x5b0 kernel/bpf/syscall.c:1396
bpf_map_do_batch+0x3d5/0x510 kernel/bpf/syscall.c:4207
__sys_bpf+0x2761/0x5f10 kernel/bpf/syscall.c:4682
__do_sys_bpf kernel/bpf/syscall.c:4722 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4720 [inline]
__x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4720
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: 0033:0x7faffb90daf9
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:00007faffa841188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007faffba210f0 RCX: 00007faffb90daf9
RDX: 0000000000000038 RSI: 0000000020000300 RDI: 000000000000001a
RBP: 00007faffb967ff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdff7e75af R14: 00007faffa841300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: e2 ee loop 0xfffffff0
2: 5a pop %rdx
3: 00 48 8b add %cl,-0x75(%rax)
6: 44 24 08 rex.R and $0x8,%al
9: 4c 8b 04 24 mov (%rsp),%r8
d: e9 c8 fd ff ff jmpq 0xfffffdda
12: e8 4f ef 5a 00 callq 0x5aef66
17: e9 8a fd ff ff jmpq 0xfffffda6
1c: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
23: 00 00 00
26: 41 56 push %r14
28: 41 55 push %r13
* 2a: 41 54 push %r12 <-- trapping instruction
2c: 55 push %rbp
2d: 65 48 8b 2c 25 40 70 mov %gs:0x27040,%rbp
34: 02 00
36: 53 push %rbx
37: 48 8d bd 3c 04 00 00 lea 0x43c(%rbp),%rdi
3e: 48 rex.W
3f: b8 .byte 0xb8