rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-...!: (10496 ticks this GP) idle=eef/1/0x4000000000000000 softirq=22949/22949 fqs=0
(t=10500 jiffies g=30813 q=356)
rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g30813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=1 timer-softirq=21225
rcu: rcu_preempt kthread starved for 10500 jiffies! g30813 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:28752 pid: 16 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5043 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6352
schedule+0xd2/0x1f0 kernel/sched/core.c:6424
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1999
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2172
kthread+0x2e9/0x3a0 kernel/kthread.c:376
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 1
CPU: 1 PID: 8783 Comm: syz-executor.2 Not tainted 5.17.0-rc6-next-20220303-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+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:516
print_cpu_stall kernel/rcu/tree_stall.h:660 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:749 [inline]
rcu_pending kernel/rcu/tree.c:3960 [inline]
rcu_sched_clock_irq.cold+0xf1/0x8e9 kernel/rcu/tree.c:2660
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473
__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 7d ee ba 7e 65 8b 05 76 ee ba 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 75 7e 09 00 e8 f0 ed 37 00 fb 65 8b 05 58 ee ba 7e <85> c0 74 58 5b 5d c3 65 8b 05 a6 f5 ba 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc90002f2f520 EFLAGS: 00000206
RAX: 0000000000000201 RBX: 00000000fffffe00 RCX: 1ffffffff200e336
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: ffffffff88fafd65 R08: 0000000000000001 R09: ffffffff90015a77
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000054
R13: 0000000000000001 R14: 00000000000000d3 R15: dffffc0000000000
spin_unlock_bh include/linux/spinlock.h:399 [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_netlink_set_mesh+0x7ca/0x14d0 net/batman-adv/netlink.c:498
genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731
genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
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: 0033:0x7efe0a689049
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:00007efe0b72e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007efe0a79bf60 RCX: 00007efe0a689049
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000009
RBP: 00007efe0a6e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd6875a0f R14: 00007efe0b72e300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 8783 Comm: syz-executor.2 Not tainted 5.17.0-rc6-next-20220303-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+0x1e6/0x230 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:369
print_cpu_stall kernel/rcu/tree_stall.h:665 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:749 [inline]
rcu_pending kernel/rcu/tree.c:3960 [inline]
rcu_sched_clock_irq.cold+0x13b/0x8e9 kernel/rcu/tree.c:2660
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:243
tick_sched_timer+0xee/0x120 kernel/time/tick-sched.c:1473
__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 7d ee ba 7e 65 8b 05 76 ee ba 7e a9 00 ff ff 00 74 45 bf 01 00 00 00 e8 75 7e 09 00 e8 f0 ed 37 00 fb 65 8b 05 58 ee ba 7e <85> c0 74 58 5b 5d c3 65 8b 05 a6 f5 ba 7e 85 c0 75 a2 0f 0b eb 9e
RSP: 0018:ffffc90002f2f520 EFLAGS: 00000206
RAX: 0000000000000201 RBX: 00000000fffffe00 RCX: 1ffffffff200e336
RDX: 0000000000000000 RSI: 0000000000000201 RDI: 0000000000000000
RBP: ffffffff88fafd65 R08: 0000000000000001 R09: ffffffff90015a77
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000054
R13: 0000000000000001 R14: 00000000000000d3 R15: dffffc0000000000
spin_unlock_bh include/linux/spinlock.h:399 [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_netlink_set_mesh+0x7ca/0x14d0 net/batman-adv/netlink.c:498
genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731
genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792
netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
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: 0033:0x7efe0a689049
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:00007efe0b72e168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007efe0a79bf60 RCX: 00007efe0a689049
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000009
RBP: 00007efe0a6e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd6875a0f R14: 00007efe0b72e300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 1d 7d ee ba 7e sbb $0x7ebaee7d,%eax
5: 65 8b 05 76 ee ba 7e mov %gs:0x7ebaee76(%rip),%eax # 0x7ebaee82
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 75 7e 09 00 callq 0x97e92
1d: e8 f0 ed 37 00 callq 0x37ee12
22: fb sti
23: 65 8b 05 58 ee ba 7e mov %gs:0x7ebaee58(%rip),%eax # 0x7ebaee82
* 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 a6 f5 ba 7e mov %gs:0x7ebaf5a6(%rip),%eax # 0x7ebaf5de
38: 85 c0 test %eax,%eax
3a: 75 a2 jne 0xffffffde
3c: 0f 0b ud2
3e: eb 9e jmp 0xffffffde