rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10496 ticks this GP) idle=995/1/0x4000000000000000 softirq=126001/126001 fqs=52
(t=10502 jiffies g=208889 q=325)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10398 jiffies! g208889 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=100724
rcu: rcu_preempt kthread starved for 10401 jiffies! g208889 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28680 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4900 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 959 Comm: kworker/u4:1 Not tainted 5.16.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:kvm_wait+0x98/0x100 arch/x86/kernel/kvm.c:1001
Code: fa 83 e2 07 38 d0 7f 04 84 c0 75 63 0f b6 07 40 38 c6 74 35 48 83 c4 10 c3 c3 e8 03 4c 4a 00 eb 07 0f 00 2d 2a 8f 75 08 fb f4 <48> 83 c4 10 c3 89 74 24 0c 48 89 3c 24 e8 c6 46 4a 00 8b 74 24 0c
RSP: 0018:ffffc90002e8f9f8 EFLAGS: 00000202
RAX: 0000000000582816 RBX: 0000000000000000 RCX: 1ffffffff1ffed86
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: ffff8880225613a8 R08: 0000000000000001 R09: ffffffff8ff9caef
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000
R13: ffffed10044ac275 R14: 0000000000000001 R15: ffff8880b9d3a880
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa98bb111b8 CR3: 000000005ead0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:603 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x8b8/0xb40 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:115
spin_lock_bh include/linux/spinlock.h:354 [inline]
batadv_tt_local_commit_changes+0x1a/0x30 net/batman-adv/translation-table.c:3718
batadv_iv_ogm_schedule_buff+0x10d8/0x1430 net/batman-adv/bat_iv_ogm.c:812
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:869 [inline]
batadv_iv_ogm_schedule net/batman-adv/bat_iv_ogm.c:862 [inline]
batadv_iv_send_outstanding_bat_ogm_packet+0x740/0x910 net/batman-adv/bat_iv_ogm.c:1713
process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
worker_thread+0x65d/0x1130 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
NMI backtrace for cpu 0
CPU: 0 PID: 3499 Comm: syz-executor.2 Not tainted 5.16.0-rc8-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+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+0x5c/0x759 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: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+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:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:__local_bh_disable_ip+0x46/0xc0 kernel/softirq.c:326
Code: 50 d3 bb 7e 65 8b 05 49 d3 bb 7e 48 31 d8 f6 c4 ff 74 23 9c 58 f6 c4 02 75 70 f7 c5 00 02 00 00 74 01 fb 65 8b 05 2a d3 bb 7e <25> ff ff ff 7f 39 d8 74 0a 5b 5d c3 e8 a9 3d 16 00 eb d6 48 8b 5c
RSP: 0018:ffffc9000414f820 EFLAGS: 00000206
RAX: 0000000000000402 RBX: 0000000000000201 RCX: ffffc90003a88000
RDX: 0000000000040000 RSI: 0000000000000201 RDI: ffffffff88e6bac4
RBP: 0000000000000246 R08: 0000000000000400 R09: ffffffff8ff9caef
R10: ffffffff88e6bc61 R11: 0000000000000001 R12: 0000000000000100
R13: ffff88805e39e598 R14: 0000000000000245 R15: dffffc0000000000
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:125 [inline]
_raw_spin_lock_bh+0x13/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
batadv_tt_local_purge+0x114/0x370 net/batman-adv/translation-table.c:1355
batadv_tt_local_resize_to_mtu+0x8e/0x130 net/batman-adv/translation-table.c:3957
batadv_update_min_mtu net/batman-adv/hard-interface.c:624 [inline]
batadv_hard_if_event+0x67d/0x1600 net/batman-adv/hard-interface.c:957
notifier_call_chain+0xb5/0x200 kernel/notifier.c:83
call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1919
call_netdevice_notifiers_mtu net/core/dev.c:1968 [inline]
dev_set_mtu_ext+0x39d/0x5b0 net/core/dev.c:8280
dev_set_mtu+0x8e/0x120 net/core/dev.c:8301
dev_ifsioc+0xb87/0x1120 net/core/dev_ioctl.c:332
dev_ioctl+0x1b9/0xed0 net/core/dev_ioctl.c:586
sock_do_ioctl+0x15a/0x230 net/socket.c:1136
sock_ioctl+0x2f1/0x640 net/socket.c:1239
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
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: 0033:0x7fbd76a3be99
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:00007fbd753b1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbd76b4ef60 RCX: 00007fbd76a3be99
RDX: 0000000020000700 RSI: 0000000000008922 RDI: 0000000000000003
RBP: 00007fbd76a95ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffccd38b55f R14: 00007fbd753b1300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: fa cli
1: 83 e2 07 and $0x7,%edx
4: 38 d0 cmp %dl,%al
6: 7f 04 jg 0xc
8: 84 c0 test %al,%al
a: 75 63 jne 0x6f
c: 0f b6 07 movzbl (%rdi),%eax
f: 40 38 c6 cmp %al,%sil
12: 74 35 je 0x49
14: 48 83 c4 10 add $0x10,%rsp
18: c3 retq
19: c3 retq
1a: e8 03 4c 4a 00 callq 0x4a4c22
1f: eb 07 jmp 0x28
21: 0f 00 2d 2a 8f 75 08 verw 0x8758f2a(%rip) # 0x8758f52
28: fb sti
29: f4 hlt
* 2a: 48 83 c4 10 add $0x10,%rsp <-- trapping instruction
2e: c3 retq
2f: 89 74 24 0c mov %esi,0xc(%rsp)
33: 48 89 3c 24 mov %rdi,(%rsp)
37: e8 c6 46 4a 00 callq 0x4a4702
3c: 8b 74 24 0c mov 0xc(%rsp),%esi