rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10492 ticks this GP) idle=387/1/0x4000000000000000 softirq=50923/50923 fqs=0
(t=10500 jiffies g=69645 q=331)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g69645 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=31100
rcu: rcu_preempt kthread starved for 10500 jiffies! g69645 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28664 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x260 kernel/sched/core.c:6377
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1963
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2136
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 20575 Comm: syz-executor.0 Not tainted 5.17.0-rc5-syzkaller-00317-g52a025546731 #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+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:458
print_cpu_stall kernel/rcu/tree_stall.h:602 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq.cold+0x3fd/0x755 kernel/rcu/tree.c:2617
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:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390
Code: 1d 0d 3b bb 7e 65 8b 05 06 3b bb 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 a5 79 09 00 e8 80 b5 37 00 fb 65 8b 05 e8 3a bb 7e <85> c0 74 58 5b 5d c3 65 8b 05 36 42 bb 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc90004066fd8 EFLAGS: 00000206
RAX: 0000000000000201 RBX: 00000000fffffe00 RCX: 1ffffffff200403e
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: ffffffff88ea0675 R08: 0000000000000001 R09: ffffffff8ffc4a37
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000fffffef0
R13: 0000000000000001 R14: 0000000000000096 R15: dffffc0000000000
spin_unlock_bh include/linux/spinlock.h:394 [inline]
batadv_tt_local_purge+0x285/0x370 net/batman-adv/translation-table.c:1357
batadv_tt_local_resize_to_mtu+0x8e/0x130 net/batman-adv/translation-table.c:3957
batadv_hardif_activate_interface.part.0.cold+0x65/0x1ba net/batman-adv/hard-interface.c:651
batadv_hardif_activate_interface net/batman-adv/hard-interface.c:742 [inline]
batadv_hardif_enable_interface+0xa1c/0xb20 net/batman-adv/hard-interface.c:734
batadv_softif_slave_add+0x64/0x130 net/batman-adv/soft-interface.c:839
do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2534
__rtnl_newlink+0x13b0/0x1760 net/core/rtnetlink.c:3500
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3531
rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5596
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x539/0x7e0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
____sys_sendmsg+0x6e8/0x810 net/socket.c:2413
___sys_sendmsg+0xf3/0x170 net/socket.c:2467
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2496
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: 0033:0x7f556b1dc049
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5569b30168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f556b2ef030 RCX: 00007f556b1dc049
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006
RBP: 00007f556b23608d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd403709f R14: 00007f5569b30300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 20575 Comm: syz-executor.0 Not tainted 5.17.0-rc5-syzkaller-00317-g52a025546731 #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+0x1e6/0x230 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:604 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:688 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq.cold+0x402/0x755 kernel/rcu/tree.c:2617
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:__local_bh_enable_ip+0xa8/0x120 kernel/softirq.c:390
Code: 1d 0d 3b bb 7e 65 8b 05 06 3b bb 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 a5 79 09 00 e8 80 b5 37 00 fb 65 8b 05 e8 3a bb 7e <85> c0 74 58 5b 5d c3 65 8b 05 36 42 bb 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc90004066fd8 EFLAGS: 00000206
RAX: 0000000000000201 RBX: 00000000fffffe00 RCX: 1ffffffff200403e
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: ffffffff88ea0675 R08: 0000000000000001 R09: ffffffff8ffc4a37
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000fffffef0
R13: 0000000000000001 R14: 0000000000000096 R15: dffffc0000000000
spin_unlock_bh include/linux/spinlock.h:394 [inline]
batadv_tt_local_purge+0x285/0x370 net/batman-adv/translation-table.c:1357
batadv_tt_local_resize_to_mtu+0x8e/0x130 net/batman-adv/translation-table.c:3957
batadv_hardif_activate_interface.part.0.cold+0x65/0x1ba net/batman-adv/hard-interface.c:651
batadv_hardif_activate_interface net/batman-adv/hard-interface.c:742 [inline]
batadv_hardif_enable_interface+0xa1c/0xb20 net/batman-adv/hard-interface.c:734
batadv_softif_slave_add+0x64/0x130 net/batman-adv/soft-interface.c:839
do_set_master+0x1c8/0x220 net/core/rtnetlink.c:2534
__rtnl_newlink+0x13b0/0x1760 net/core/rtnetlink.c:3500
rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3531
rtnetlink_rcv_msg+0x413/0xb80 net/core/rtnetlink.c:5596
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
netlink_unicast+0x539/0x7e0 net/netlink/af_netlink.c:1343
netlink_sendmsg+0x904/0xe00 net/netlink/af_netlink.c:1919
sock_sendmsg_nosec net/socket.c:705 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:725
____sys_sendmsg+0x6e8/0x810 net/socket.c:2413
___sys_sendmsg+0xf3/0x170 net/socket.c:2467
__sys_sendmsg+0xe5/0x1b0 net/socket.c:2496
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: 0033:0x7f556b1dc049
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5569b30168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f556b2ef030 RCX: 00007f556b1dc049
RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000006
RBP: 00007f556b23608d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd403709f R14: 00007f5569b30300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 1d 0d 3b bb 7e sbb $0x7ebb3b0d,%eax
5: 65 8b 05 06 3b bb 7e mov %gs:0x7ebb3b06(%rip),%eax # 0x7ebb3b12
c: a9 00 ff ff 00 test $0xffff00,%eax
11: 74 45 je 0x58
13: bf 01 00 00 00 mov $0x1,%edi
18: e8 a5 79 09 00 callq 0x979c2
1d: e8 80 b5 37 00 callq 0x37b5a2
22: fb sti
23: 65 8b 05 e8 3a bb 7e mov %gs:0x7ebb3ae8(%rip),%eax # 0x7ebb3b12
* 2a: 85 c0 test %eax,%eax <-- trapping instruction
2c: 74 58 je 0x86
2e: 5b pop %rbx
2f: 5d pop %rbp
30: c3 retq
31: 65 8b 05 36 42 bb 7e mov %gs:0x7ebb4236(%rip),%eax # 0x7ebb426e
38: 85 c0 test %eax,%eax
3a: 75 a2 jne 0xffffffde
3c: 0f 0b ud2
3e: eb 9e jmp 0xffffffde