rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10499 ticks this GP) idle=ea3/1/0x4000000000000000 softirq=128196/128196 fqs=37
(t=10501 jiffies g=219637 q=300)
rcu: rcu_preempt kthread starved for 10427 jiffies! g219637 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:28696 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: 32605 Comm: syz-executor.0 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_pc+0x50/0x60 kernel/kcov.c:203
Code: 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 83 f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 48 83 c0 01 <48> 39 c2 76 07 48 89 34 c1 48 89 01 c3 0f 1f 00 41 55 41 54 49 89
RSP: 0018:ffffc90003f7fb28 EFLAGS: 00000216
RAX: 0000000000040000 RBX: 0000000000000001 RCX: ffffc90003782000
RDX: 0000000000040000 RSI: ffffffff81c6a3ba RDI: 0000000000000003
RBP: 000000002006f67b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81c6a39d R11: 0000000000000000 R12: ffff88814774e7a8
R13: 0000000000000000 R14: ffff88814774e140 R15: ffff88807e9c0800
FS: 00007f57d688b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33027000 CR3: 00000000753a3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__check_object_size+0x4a/0x3f0 mm/usercopy.c:290
check_object_size include/linux/thread_info.h:185 [inline]
check_copy_size include/linux/thread_info.h:218 [inline]
copy_from_user include/linux/uaccess.h:191 [inline]
generic_map_update_batch+0x32a/0x5b0 kernel/bpf/syscall.c:1391
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: 0033:0x7f57d9378ae9
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:00007f57d688b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f57d948c1a0 RCX: 00007f57d9378ae9
RDX: 0000000000000038 RSI: 0000000020000080 RDI: 000000000000001a
RBP: 00007f57d93d2f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf6c94e2f R14: 00007f57d688b300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 32591 Comm: syz-executor.0 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 4a 4d 22 f8 48 89 ef e8 92 c3 22 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 33 8b 15 f8 65 8b 05 0c 22 c8 76 85 c0 74 0a 5b 5d c3 e8 30 5f
RSP: 0018:ffffc90003e1f9d0 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1ade501
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffe8ffffd9ea08 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817dad68 R11: 0000000000000000 R12: ffff88806e4de1c0
R13: ffffc90003f0f390 R14: ffff8880252ac780 R15: ffffc90003f0f3d0
bpf_common_lru_pop_free kernel/bpf/bpf_lru_list.c:454 [inline]
bpf_lru_pop_free+0x63d/0x16d0 kernel/bpf/bpf_lru_list.c:499
prealloc_lru_pop+0x28/0x1c0 kernel/bpf/hashtab.c:290
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: 0033:0x7f57d9378ae9
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:00007f57d68ee188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f57d948bf60 RCX: 00007f57d9378ae9
RDX: 0000000000000038 RSI: 0000000020000080 RDI: 000000000000001a
RBP: 00007f57d93d2f25 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf6c94e2f R14: 00007f57d68ee300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 35 8b 82 a4 15 xor $0x15a4828b,%eax
5: 00 00 add %al,(%rax)
7: 85 c0 test %eax,%eax
9: 74 2b je 0x36
b: 8b 82 80 15 00 00 mov 0x1580(%rdx),%eax
11: 83 f8 02 cmp $0x2,%eax
14: 75 20 jne 0x36
16: 48 8b 8a 88 15 00 00 mov 0x1588(%rdx),%rcx
1d: 8b 92 84 15 00 00 mov 0x1584(%rdx),%edx
23: 48 8b 01 mov (%rcx),%rax
26: 48 83 c0 01 add $0x1,%rax
* 2a: 48 39 c2 cmp %rax,%rdx <-- trapping instruction
2d: 76 07 jbe 0x36
2f: 48 89 34 c1 mov %rsi,(%rcx,%rax,8)
33: 48 89 01 mov %rax,(%rcx)
36: c3 retq
37: 0f 1f 00 nopl (%rax)
3a: 41 55 push %r13
3c: 41 54 push %r12
3e: 49 rex.WB
3f: 89 .byte 0x89