rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (1 GPs behind) idle=88e4/1/0x4000000000000000 softirq=14259/14261 fqs=4160
rcu: hardirqs softirqs csw/system
rcu: number: 1532557 3 0
rcu: cputime: 16368 36101 45 ==> 52470(ms)
rcu: (t=10500 jiffies g=11909 q=564 ncpus=2)
CPU: 0 PID: 5981 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:seqcount_lockdep_reader_access+0x19a/0x1d0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 65 d3 0f 00 eb 15 e8 5e d3 0f 00 e8 39 d7 1f 09 4d 85 e4 74 ea e8 4f d3 0f 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 43 c7 44 3e 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900000064a0 EFLAGS: 00000246
RAX: ffffffff81780b51 RBX: 0000000000000000 RCX: ffff88807a33bc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000006558 R08: ffffffff9222361f R09: 1ffffffff24446c3
R10: dffffc0000000000 R11: fffffbfff24446c4 R12: 0000000000000200
R13: 000001fb63109b96 R14: 1ffff92000000c94 R15: dffffc0000000000
FS: 0000555581949500(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc214b6db4 CR3: 000000007761e000 CR4: 00000000003506f0
Call Trace:
ktime_get_with_offset+0x94/0x330 kernel/time/timekeeping.c:889
ktime_get_real include/linux/timekeeping.h:79 [inline]
netif_rx_internal+0x33d/0x4e0 net/core/dev.c:5217
__netif_rx+0x78/0xc0 net/core/dev.c:5260
veth_forward_skb drivers/net/veth.c:325 [inline]
veth_xmit+0x57a/0xa30 drivers/net/veth.c:378
__netdev_start_xmit include/linux/netdevice.h:5003 [inline]
netdev_start_xmit include/linux/netdevice.h:5017 [inline]
xmit_one net/core/dev.c:3671 [inline]
dev_hard_start_xmit+0x269/0x790 net/core/dev.c:3687
__dev_queue_xmit+0x1d1e/0x3a30 net/core/dev.c:4518
dev_queue_xmit include/linux/netdevice.h:3174 [inline]
br_dev_queue_push_xmit+0x6b7/0x880 net/bridge/br_forward.c:53
NF_HOOK+0x66e/0x700 include/linux/netfilter.h:316
br_nf_post_routing+0xa39/0xec0 net/bridge/br_netfilter_hooks.c:981
nf_hook_entry_hookfn include/linux/netfilter.h:156 [inline]
nf_hook_slow+0xb9/0x210 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:271 [inline]
NF_HOOK+0x23e/0x3e0 include/linux/netfilter.h:314
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1188 [inline]
br_nf_forward_finish+0xa6d/0xe90 net/bridge/br_netfilter_hooks.c:688
NF_HOOK+0x66e/0x700 include/linux/netfilter.h:316
br_nf_forward_ip+0xc68/0x10c0 net/bridge/br_netfilter_hooks.c:758
nf_hook_entry_hookfn include/linux/netfilter.h:156 [inline]
nf_hook_slow+0xb9/0x210 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:271 [inline]
NF_HOOK+0x23e/0x3e0 include/linux/netfilter.h:314
__br_forward+0x433/0x610 net/bridge/br_forward.c:115
br_handle_frame_finish+0xf2d/0x15c0 net/bridge/br_input.c:215
br_nf_hook_thresh+0x3d1/0x4b0 net/bridge/br_netfilter_hooks.c:1188
br_nf_pre_routing_finish_ipv6+0x9e5/0xd20 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:316 [inline]
br_nf_pre_routing_ipv6+0x34d/0x6a0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:156 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
br_handle_frame+0x12fa/0x15b0 net/bridge/br_input.c:433
__netif_receive_skb_core+0xf94/0x3ac0 net/core/dev.c:5604
__netif_receive_skb_one_core net/core/dev.c:5708 [inline]
__netif_receive_skb+0x74/0x290 net/core/dev.c:5824
process_backlog+0x380/0x710 net/core/dev.c:6152
__napi_poll+0xbb/0x460 net/core/dev.c:6714
napi_poll net/core/dev.c:6781 [inline]
net_rx_action+0x65f/0xcc0 net/core/dev.c:6917
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:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5267
Code: 39 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 33 7d 43 09 e8 3e 3e 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc9000498f760 EFLAGS: 00000286
RAX: 5b9ebef801836f00 RBX: 0000000000000000 RCX: 5b9ebef801836f00
RDX: dffffc0000000000 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260
RBP: ffffc9000498f7b0 R08: ffffffff9222361f R09: 1ffffffff24446c3
R10: dffffc0000000000 R11: fffffbfff24446c4 R12: ffff88807a33bc00
R13: 1ffff110171879a1 R14: dffffc0000000000 R15: ffff8880b8c3cd08
context_switch kernel/sched/core.c:5396 [inline]
__schedule+0x1577/0x4720 kernel/sched/core.c:6722
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6889
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6913
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
smp_call_function_single+0x48d/0x5a0 kernel/smp.c:652
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5bb/0x920 kernel/events/core.c:2959
__do_sys_perf_event_open kernel/events/core.c:12952 [inline]
__se_sys_perf_event_open+0x180d/0x1d40 kernel/events/core.c:12594
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: 0033:0x7facdf79f559
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:00007ffe90b69448 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007facdfa25fa0 RCX: 00007facdf79f559
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000002180
RBP: 00007facdf836b20 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007facdfa25fac R14: 00007facdfa25fa0 R15: 00007facdfa25fa0