rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (1 GPs behind) idle=dab/1/0x4000000000000000 softirq=243459/243461 fqs=62
(t=10502 jiffies g=406509 q=1122)
rcu: rcu_preempt kthread starved for 10377 jiffies! g406509 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28616 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11735 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:110
Code: c7 00 08 f5 8e e8 78 4f 8b 00 eb b0 66 0f 1f 44 00 00 be 01 00 00 00 e9 76 10 2e 00 cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48
RSP: 0018:ffffc90000007eb8 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffffff8b35ca80 RCX: 0000000000000020
RDX: 1ffffffff166b952 RSI: 00000000000000de RDI: 0000000000000380
RBP: ffff8880b9c27300 R08: 000000000000003f R09: 0000000000000000
R10: ffffffff816a5e07 R11: 0000000000000000 R12: 00000000000000de
R13: 0000000000000020 R14: 0000000000000000 R15: ffff8880b9c2a400
FS: 00007f848e069700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020400000 CR3: 0000000043635000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
apic_write arch/x86/include/asm/apic.h:394 [inline]
lapic_next_event+0x4d/0x80 arch/x86/kernel/apic/apic.c:469
clockevents_program_event+0x254/0x370 kernel/time/clockevents.c:334
tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:44
hrtimer_interrupt+0x36e/0x790 kernel/time/hrtimer.c:1824
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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 6a 4c 1f f8 48 89 ef e8 b2 c2 1f f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 d3 8c 12 f8 65 8b 05 8c e1 c4 76 85 c0 74 0a 5b 5d c3 e8 a0 7b
RSP: 0018:ffffc90002887a78 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1ae1711
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88807cb78320 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817e0a58 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88801d0cf500 R14: 0000000000000003 R15: 0000000000000001
htab_unlock_bucket kernel/bpf/hashtab.c:189 [inline]
__htab_lru_percpu_map_update_elem+0x313/0x7a0 kernel/bpf/hashtab.c:1304
bpf_percpu_hash_update+0x124/0x200 kernel/bpf/hashtab.c:2216
bpf_map_update_value.isra.0+0x38b/0x910 kernel/bpf/syscall.c:181
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: 0033:0x7f8490af3ae9
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:00007f848e069188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8490c06f60 RCX: 00007f8490af3ae9
RDX: 0000000000000038 RSI: 00000000200014c0 RDI: 000000000000001a
RBP: 00007f8490b4df6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd0a89d5df R14: 00007f848e069300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 11713 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194
Code: 74 24 10 e8 6a 4c 1f f8 48 89 ef e8 b2 c2 1f f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 d3 8c 12 f8 65 8b 05 8c e1 c4 76 85 c0 74 0a 5b 5d c3 e8 a0 7b
RSP: 0018:ffffc900029d7a78 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1ae1711
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88806d72c320 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817e0a58 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88801c664550 R14: 0000000000000003 R15: 0000000000000001
htab_unlock_bucket kernel/bpf/hashtab.c:189 [inline]
__htab_lru_percpu_map_update_elem+0x313/0x7a0 kernel/bpf/hashtab.c:1304
bpf_percpu_hash_update+0x124/0x200 kernel/bpf/hashtab.c:2216
bpf_map_update_value.isra.0+0x38b/0x910 kernel/bpf/syscall.c:181
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: 0033:0x7f514f483ae9
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:00007f514c9f9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f514f596f60 RCX: 00007f514f483ae9
RDX: 0000000000000038 RSI: 00000000200014c0 RDI: 000000000000001a
RBP: 00007f514f4ddf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd725b4c0f R14: 00007f514c9f9300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: c7 00 08 f5 8e e8 movl $0xe88ef508,(%rax)
6: 78 4f js 0x57
8: 8b 00 mov (%rax),%eax
a: eb b0 jmp 0xffffffbc
c: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
12: be 01 00 00 00 mov $0x1,%esi
17: e9 76 10 2e 00 jmpq 0x2e1092
1c: cc int3
1d: cc int3
1e: cc int3
1f: cc int3
20: cc int3
21: cc int3
22: 89 ff mov %edi,%edi
24: 89 b7 00 c0 5f ff mov %esi,-0xa04000(%rdi)
* 2a: c3 retq <-- trapping instruction
2b: 0f 1f 80 00 00 00 00 nopl 0x0(%rax)
32: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
39: fc ff df
3c: 53 push %rbx
3d: 89 fb mov %edi,%ebx
3f: 48 rex.W