rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=0634/1/0x4000000000000000 softirq=10745/10746 fqs=5248
rcu: hardirqs softirqs csw/system
rcu: number: 1334213 0 0
rcu: cputime: 16751 35727 68 ==> 52490(ms)
rcu: (t=10501 jiffies g=10725 q=1054 ncpus=2)
CPU: 1 PID: 5881 Comm: syz.2.13 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline]
RIP: 0010:__local_bh_enable_ip+0x142/0x1c0 kernel/softirq.c:413
Code: 8a e8 02 e4 3c 09 65 66 8b 05 7a eb b0 7e 66 85 c0 75 54 bf 01 00 00 00 e8 2b 1d 0a 00 e8 e6 16 3b 00 fb 65 8b 05 46 eb b0 7e <85> c0 75 05 e8 35 d0 ad ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc900001f01e0 EFLAGS: 00000282
RAX: 0000000000000502 RBX: 0000000000000201 RCX: 1157759ef2a1ff00
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: ffffffff8b1d3360
RBP: ffffc900001f0260 R08: ffffffff911ef5ef R09: 1ffffffff223debd
R10: dffffc0000000000 R11: fffffbfff223debe R12: ffffffff8a6b930a
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff9200003e03c
FS: 00007f6d4f5ab6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd8fa9f14b8 CR3: 00000000271b5000 CR4: 00000000003506e0
Call Trace:
spin_unlock_bh include/linux/spinlock.h:396 [inline]
hsr_register_frame_out+0x25a/0x390 net/hsr/hsr_framereg.c:-1
hsr_forward_do net/hsr/hsr_forward.c:443 [inline]
hsr_forward_skb+0xdc1/0x20b0 net/hsr/hsr_forward.c:626
hsr_dev_xmit+0x1e7/0x350 net/hsr/hsr_device.c:238
__netdev_start_xmit include/linux/netdevice.h:4982 [inline]
netdev_start_xmit include/linux/netdevice.h:4996 [inline]
xmit_one net/core/dev.c:3649 [inline]
dev_hard_start_xmit+0x269/0x790 net/core/dev.c:3665
__dev_queue_xmit+0x198c/0x3640 net/core/dev.c:4472
neigh_output include/net/neighbour.h:547 [inline]
ip6_finish_output2+0xf7a/0x1690 net/ipv6/ip6_output.c:143
dst_output include/net/dst.h:467 [inline]
NF_HOOK include/linux/netfilter.h:304 [inline]
ndisc_send_skb+0xbb9/0x1480 net/ipv6/ndisc.c:513
addrconf_rs_timer+0x36b/0x640 net/ipv6/addrconf.c:4036
call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x570/0x810 kernel/time/timer.c:2023
run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
handle_softirqs+0x27d/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:generic_exec_single+0x477/0x4e0 kernel/smp.c:418
Code: 75 11 e8 0c 10 0b 00 48 85 db 75 16 e8 02 10 0b 00 eb 15 e8 fb 0f 0b 00 e8 06 38 13 09 48 85 db 74 ea e8 ec 0f 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 43 c7 44 2c 08
RSP: 0018:ffffc90004b17a00 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc9000d70c000 RSI: 00000000000058ca RDI: 00000000000058cb
RBP: ffffc90004b17ad0 R08: ffffffff911ef5ff R09: 1ffffffff223debf
R10: dffffc0000000000 R11: fffffbfff223dec0 R12: 1ffff92000962f44
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000962f65
smp_call_function_single+0x36d/0x5a0 kernel/smp.c:647
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2958
__do_sys_perf_event_open kernel/events/core.c:12957 [inline]
__se_sys_perf_event_open+0x1841/0x1c60 kernel/events/core.c:12609
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6d4e79e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6d4f5ab028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f6d4ea25fa0 RCX: 00007f6d4e79e159
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f6d4e835024 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6d4ea26038 R14: 00007f6d4ea25fa0 R15: 00007ffe822a4bf8