rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10496 ticks this GP) idle=3654/1/0x4000000000000000 softirq=26517/26517 fqs=3705
rcu: hardirqs softirqs csw/system
rcu: number: 1227986 0 0
rcu: cputime: 16677 35802 70 ==> 52480(ms)
rcu: (t=10500 jiffies g=32249 q=995 ncpus=2)
CPU: 1 PID: 9361 Comm: syz.1.1002 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:seqcount_lockdep_reader_access+0x19a/0x1d0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 d5 c9 0f 00 eb 15 e8 ce c9 0f 00 e8 19 62 17 09 4d 85 e4 74 ea e8 bf c9 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:ffffc900001efda0 EFLAGS: 00000246
RAX: ffffffff8177a861 RBX: 0000000000000000 RCX: ffff88802d841e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001efe50 R08: ffffffff911ed5cf R09: 1ffffffff223dab9
R10: dffffc0000000000 R11: fffffbfff223daba R12: 0000000000000200
R13: 000000bfb96853db R14: 1ffff9200003dfb4 R15: dffffc0000000000
FS: 00007fb1a5df36c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2b4232 CR3: 000000005d7e0000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
ktime_get+0x35/0x280 kernel/time/timekeeping.c:846
ktime_get_ns include/linux/timekeeping.h:154 [inline]
tcp_clock_ns include/net/tcp.h:809 [inline]
tcp_mstamp_refresh+0x20/0x90 net/ipv4/tcp_output.c:55
tcp_rcv_established+0x168/0x1d70 net/ipv4/tcp_input.c:6019
tcp_v4_do_rcv+0x6d3/0xba0 net/ipv4/tcp_ipv4.c:1735
tcp_v4_rcv+0x2358/0x2a60 net/ipv4/tcp_ipv4.c:2167
ip_protocol_deliver_rcu+0x20a/0x3f0 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2c3/0x510 net/ipv4/ip_input.c:233
NF_HOOK+0x32d/0x3b0 include/linux/netfilter.h:304
dst_input include/net/dst.h:477 [inline]
ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline]
ip_list_rcv_finish net/ipv4/ip_input.c:631 [inline]
ip_sublist_rcv+0xa36/0xd60 net/ipv4/ip_input.c:639
ip_list_rcv+0x3ed/0x440 net/ipv4/ip_input.c:674
__netif_receive_skb_list_ptype net/core/dev.c:5689 [inline]
__netif_receive_skb_list_core+0x2d9/0x770 net/core/dev.c:5727
__netif_receive_skb_list net/core/dev.c:5789 [inline]
netif_receive_skb_list_internal+0x943/0xca0 net/core/dev.c:5880
gro_normal_list include/net/gro.h:451 [inline]
gro_normal_one include/net/gro.h:464 [inline]
napi_skb_finish net/core/gro.c:580 [inline]
napi_gro_receive+0x553/0xaf0 net/core/gro.c:610
receive_buf+0x20ab/0x3660 drivers/net/virtio_net.c:1874
virtnet_receive drivers/net/virtio_net.c:2159 [inline]
virtnet_poll+0x69e/0x1300 drivers/net/virtio_net.c:2236
__napi_poll+0xbb/0x460 net/core/dev.c:6650
napi_poll net/core/dev.c:6717 [inline]
net_rx_action+0x65f/0xcc0 net/core/dev.c:6853
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:preempt_schedule_irq+0xba/0x150 kernel/sched/core.c:7011
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 6f bf 01 00 00 00 e8 21 8c c5 f6 e8 ec 86 f6 f6 fb bf 01 00 00 00 31 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc9000f6b7be0 EFLAGS: 00000282
RAX: 3f7e78993c767400 RBX: 0000000000000000 RCX: 3f7e78993c767400
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: 0000000000000001
RBP: ffffc9000f6b7c80 R08: ffffffff8e8c772f R09: 1ffffffff1d18ee5
R10: dffffc0000000000 R11: fffffbfff1d18ee6 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001ed6f7c
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__do_sys_perf_event_open kernel/events/core.c:-1 [inline]
RIP: 0010:__se_sys_perf_event_open+0x164/0x1c60 kernel/events/core.c:12601
Code: c0 ea ff ff ff eb 23 4c 89 f7 31 f6 e8 55 b1 3d 02 41 89 c4 31 ff 89 c6 e8 49 03 d8 ff 45 85 e4 74 78 e8 8f ff d7 ff 49 63 c4 <48> bb f8 f8 f8 f8 f8 f8 f8 f8 4b 89 5c 3d 04 4b 89 5c 3d 0c 43 c6
RSP: 0018:ffffc9000f6b7d40 EFLAGS: 00000282
RAX: 0000000000000004 RBX: 0000000000000004 RCX: 0000000000080000
RDX: ffffc9000d7dd000 RSI: 0000000000015b04 RDI: 0000000000015b05
RBP: ffffc9000f6b7f10 R08: ffffffff8e8c772f R09: 1ffffffff1d18ee5
R10: dffffc0000000000 R11: fffffbfff1d18ee6 R12: ffff88807b1ef6c8
R13: 1ffff92001ed6fb8 R14: ffff88807b1e8918 R15: dffffc0000000000
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: 0033:0x7fb1a4f9e0d9
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:00007fb1a5df3028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fb1a5225fa0 RCX: 00007fb1a4f9e0d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007fb1a5035024 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb1a5226038 R14: 00007fb1a5225fa0 R15: 00007ffebfb613e8