rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=697/1/0x4000000000000000 softirq=89173/89174 fqs=19
(t=10501 jiffies g=137945 q=406)
rcu: rcu_preempt kthread starved for 10464 jiffies! g137945 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:28720 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4d90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1971
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2144
kthread+0x405/0x4f0 kernel/kthread.c:345
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 44 Comm: kworker/u4:2 Not tainted 5.16.0-rc5-next-20211220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy6 ieee80211_iface_work
RIP: 0010:__lock_acquire+0xd8e/0x54a0 kernel/locking/lockdep.c:4897
Code: 60 13 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 f3 2f 00 00 48 81 3b 60 34 1b 8f <0f> 84 52 f3 ff ff 41 83 fa 01 0f 87 5a f3 ff ff 45 89 d4 0f 87 b2
RSP: 0018:ffffc90000dc0b08 EFLAGS: 00000002
RAX: dffffc0000000000 RBX: ffffffff90718aa8 RCX: 0000000000000000
RDX: 1ffffffff20e3155 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8880119f9d40 R14: 0000000000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ea26000 CR3: 0000000070025000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5604
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
debug_object_deactivate lib/debugobjects.c:735 [inline]
debug_object_deactivate+0x101/0x300 lib/debugobjects.c:723
debug_timer_deactivate kernel/time/timer.c:734 [inline]
debug_deactivate kernel/time/timer.c:778 [inline]
detach_timer kernel/time/timer.c:825 [inline]
expire_timers kernel/time/timer.c:1455 [inline]
__run_timers.part.0+0x513/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
do_softirq.part.0+0xde/0x130 kernel/softirq.c:459
do_softirq kernel/softirq.c:451 [inline]
__local_bh_enable_ip+0x102/0x120 kernel/softirq.c:383
ieee80211_tx_skb_tid.constprop.0+0xff/0x340 net/mac80211/ieee80211_i.h:2186
ieee80211_tx_skb net/mac80211/ieee80211_i.h:2195 [inline]
ieee80211_send_deauth_disassoc+0x2ec/0x3e0 net/mac80211/util.c:1761
ieee80211_ibss_sta_expire net/mac80211/ibss.c:1272 [inline]
ieee80211_sta_merge_ibss net/mac80211/ibss.c:1298 [inline]
ieee80211_ibss_work+0x61a/0xe80 net/mac80211/ibss.c:1709
ieee80211_iface_work+0xb70/0xd00 net/mac80211/iface.c:1603
process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307
worker_thread+0x652/0x11c0 kernel/workqueue.c:2454
kthread+0x405/0x4f0 kernel/kthread.c:345
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
NMI backtrace for cpu 0
CPU: 0 PID: 4057 Comm: syz-executor.4 Not tainted 5.16.0-rc5-next-20211220-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+0x262/0x3f0 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:3927 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2625
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+0x40/0xc0 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 ba d2 03 f8 48 89 ef e8 02 49 04 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 63 00 f7 f7 65 8b 05 ec 58 a9 76 85 c0 74 0a 5b 5d c3 e8 30 48
RSP: 0018:ffffc90000007c08 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff2001146
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000001
RBP: ffff8880b9c28480 R08: 0000000000000001 R09: ffffffff8ffafa2f
R10: 0000000000000001 R11: 0000000000000000 R12: 00000001000154d9
R13: ffff8880b9c28480 R14: 0000000000000000 R15: 00000000ffffffff
__mod_timer+0x837/0xe30 kernel/time/timer.c:1065
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734
__run_timers kernel/time/timer.c:1715 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747
__do_softirq+0x29b/0x9c2 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4866
Code: e3 5b 05 08 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 a7 9c 2d 00 fb 65 48 8b 1c 25 00 70 02 00 <48> 8d bb 88 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc9000f4df2a8 EFLAGS: 00000206
RAX: 0000000000001595 RBX: ffff88802caa1d40 RCX: 1ffffffff1ff60a6
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000f4df2f0 R08: 0000000000000001 R09: ffffffff8ffaf947
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b9c3a958
R13: ffff8880223aba80 R14: ffff8880b9c39c00 R15: ffff8880b9c3a638
context_switch kernel/sched/core.c:4989 [inline]
__schedule+0xaba/0x4d90 kernel/sched/core.c:6296
preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6711
irqentry_exit+0x31/0x80 kernel/entry/common.c:425
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__phys_addr+0xef/0x140 arch/x86/mm/physaddr.c:21
Code: 89 e0 5b 5d 41 5c 41 5d c3 e8 9d 1c 43 00 0f 0b e8 96 1c 43 00 48 c7 c0 10 50 8b 8b 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 <80> 3c 10 00 75 38 4c 8b 25 34 56 56 0a 48 89 ee bf ff ff ff 1f e8
RSP: 0018:ffffc9000f4df508 EFLAGS: 00000a02
RAX: 1ffffffff1716a02 RBX: ffffffff87fe1a4d RCX: ffffc90005019000
RDX: dffffc0000000000 RSI: ffffffff8134f9ba RDI: 0000000000000003
RBP: 0000000007fe1a4d R08: ffffffff87fe1a4d R09: ffffc9000f4df647
R10: ffffffff8134f908 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000a4e R15: dffffc0000000000
__text_poke+0xca/0x8c0 arch/x86/kernel/alternative.c:980
text_poke_bp_batch+0x185/0x510 arch/x86/kernel/alternative.c:1297
text_poke_flush arch/x86/kernel/alternative.c:1470 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1467 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1477
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d5/0x430 kernel/jump_label.c:830
static_key_slow_inc_cpuslocked+0x1b2/0x250 kernel/jump_label.c:144
static_key_slow_inc+0x16/0x20 kernel/jump_label.c:159
fl_create+0x94a/0xc50 net/ipv6/ip6_flowlabel.c:454
ipv6_flowlabel_get net/ipv6/ip6_flowlabel.c:634 [inline]
ipv6_flowlabel_opt+0xad7/0x2b80 net/ipv6/ip6_flowlabel.c:737
do_ipv6_setsockopt.constprop.0+0x1a27/0x44c0 net/ipv6/ipv6_sockglue.c:942
ipv6_setsockopt+0xd6/0x180 net/ipv6/ipv6_sockglue.c:1019
udpv6_setsockopt+0x76/0xc0 net/ipv6/udp.c:1648
__sys_setsockopt+0x2db/0x610 net/socket.c:2177
__do_sys_setsockopt net/socket.c:2188 [inline]
__se_sys_setsockopt net/socket.c:2185 [inline]
__x64_sys_setsockopt+0xba/0x150 net/socket.c:2185
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: 0033:0x7fe0b5c85e99
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:00007fe0b45da168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe0b5d99030 RCX: 00007fe0b5c85e99
RDX: 0000000000000020 RSI: 0000000000000029 RDI: 0000000000000005
RBP: 00007fe0b5cdfff1 R08: 0000000000000020 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdc32dc1bf R14: 00007fe0b45da300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 13 0e adc (%rsi),%ecx
2: e9 bd 00 00 00 jmpq 0xc4
7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
e: fc ff df
11: 48 89 da mov %rbx,%rdx
14: 48 c1 ea 03 shr $0x3,%rdx
18: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
1c: 0f 85 f3 2f 00 00 jne 0x3015
22: 48 81 3b 60 34 1b 8f cmpq $0xffffffff8f1b3460,(%rbx)
* 29: 0f 84 52 f3 ff ff je 0xfffff381 <-- trapping instruction
2f: 41 83 fa 01 cmp $0x1,%r10d
33: 0f 87 5a f3 ff ff ja 0xfffff393
39: 45 89 d4 mov %r10d,%r12d
3c: 0f .byte 0xf
3d: 87 .byte 0x87
3e: b2 .byte 0xb2