rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=425/1/0x4000000000000000 softirq=175433/175434 fqs=5069
(t=10500 jiffies g=304785 q=2079)
NMI backtrace for cpu 1
CPU: 1 PID: 19584 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:prealloc_lru_pop+0x2/0x1c0 kernel/bpf/hashtab.c:289
Code: 3c ff ff ff 48 89 cf e8 3c 5a 31 00 e9 8e fd ff ff e8 42 5a 31 00 e9 43 fd ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 56 <41> 55 41 89 d5 41 54 49 89 f4 55 48 89 fd 53 e8 6a ec ea ff 48 8d
RSP: 0018:ffffc90002da7ab8 EFLAGS: 00000206
RAX: 000000000000001b RBX: ffff88807cdae800 RCX: ffffc90011dcd000
RDX: 00000000a0c5381b RSI: ffff88803dd27a50 RDI: ffff88807cdae800
RBP: ffff88807cdaa000 R08: ffffffff8993ca60 R09: ffffffff818c4b57
R10: 000000000000000c R11: 0000000000000007 R12: 00000000a0c5381b
R13: ffff88803dd27a50 R14: ffff88803dd27690 R15: ffff88807cdaa0d8
htab_lru_map_update_elem+0x15a/0x8c0 kernel/bpf/hashtab.c:1151
bpf_map_update_value.isra.0+0x2e8/0x910 kernel/bpf/syscall.c:207
generic_map_update_batch+0x3f2/0x5b0 kernel/bpf/syscall.c:1396
bpf_map_do_batch+0x3d5/0x510 kernel/bpf/syscall.c:4207
__sys_bpf+0x2751/0x5f00 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: 0033:0x7efd0e717ae9
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:00007efd0bc6c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007efd0e82b020 RCX: 00007efd0e717ae9
RDX: 0000000000000038 RSI: 0000000020000380 RDI: 000000000000001a
RBP: 00007efd0e771f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8e73832f R14: 00007efd0bc6c300 R15: 0000000000022000
----------------
Code disassembly (best guess), 3 bytes skipped:
0: ff 48 89 decl -0x77(%rax)
3: cf iret
4: e8 3c 5a 31 00 callq 0x315a45
9: e9 8e fd ff ff jmpq 0xfffffd9c
e: e8 42 5a 31 00 callq 0x315a55
13: e9 43 fd ff ff jmpq 0xfffffd5b
18: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
1f: 00 00 00 00
23: 66 90 xchg %ax,%ax
25: 41 56 push %r14
* 27: 41 55 push %r13 <-- trapping instruction
29: 41 89 d5 mov %edx,%r13d
2c: 41 54 push %r12
2e: 49 89 f4 mov %rsi,%r12
31: 55 push %rbp
32: 48 89 fd mov %rdi,%rbp
35: 53 push %rbx
36: e8 6a ec ea ff callq 0xffeaeca5
3b: 48 rex.W
3c: 8d .byte 0x8d