syzbot

rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=2efc/1/0x4000000000000000 softirq=147695/147695 fqs=4272
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1301402          0            0
rcu: 	cputime:    18022      34457           65   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=204037 q=499 ncpus=2)
CPU: 1 PID: 6078 Comm: syz.1.10484 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:seqcount_lockdep_reader_access+0x19a/0x1d0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 d5 c0 0f 00 eb 15 e8 ce c0 0f 00 e8 69 b9 0c 09 4d 85 e4 74 ea e8 bf c0 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:ffffc900001efe60 EFLAGS: 00000246
RAX: ffffffff81775261 RBX: 0000000000000000 RCX: ffff8880247d3c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001eff18 R08: ffffffff911be5f7 R09: 1ffffffff2237cbe
R10: dffffc0000000000 R11: fffffbfff2237cbf R12: 0000000000000200
R13: 1ffff9200003dff4 R14: 1ffff9200003dfcc R15: dffffc0000000000
FS:  00007f35dbe336c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c24800ff8 CR3: 000000004223c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:388 [inline]
 ktime_get_with_offset+0x103/0x330 kernel/time/timekeeping.c:891
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 netif_rx_internal+0x344/0x4e0 net/core/dev.c:5145
 __netif_rx+0x78/0xc0 net/core/dev.c:5188
 veth_forward_skb drivers/net/veth.c:321 [inline]
 veth_xmit+0x550/0x9f0 drivers/net/veth.c:374
 __netdev_start_xmit include/linux/netdevice.h:4943 [inline]
 netdev_start_xmit include/linux/netdevice.h:4957 [inline]
 xmit_one net/core/dev.c:3645 [inline]
 dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3661
 __dev_queue_xmit+0x1ac2/0x36b0 net/core/dev.c:4451
 dev_queue_xmit include/linux/netdevice.h:3113 [inline]
 vlan_dev_hard_start_xmit+0x355/0x5e0 net/8021q/vlan_dev.c:125
 __netdev_start_xmit include/linux/netdevice.h:4943 [inline]
 netdev_start_xmit include/linux/netdevice.h:4957 [inline]
 xmit_one net/core/dev.c:3645 [inline]
 dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3661
 __dev_queue_xmit+0x1ac2/0x36b0 net/core/dev.c:4451
 neigh_output include/net/neighbour.h:543 [inline]
 ip6_finish_output2+0xe3d/0x1630 net/ipv6/ip6_output.c:141
 dst_output include/net/dst.h:467 [inline]
 NF_HOOK include/linux/netfilter.h:304 [inline]
 ndisc_send_skb+0xc26/0x14f0 net/ipv6/ndisc.c:513
 addrconf_rs_timer+0x2d5/0x630 net/ipv6/addrconf.c:4024
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x542/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x280/0x820 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
 </IRQ>
 <TASK>
 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:7010
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 01 2d d0 f6 e8 9c 31 01 f7 fb bf 01 00 00 00 <e8> f1 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc900031d7c20 EFLAGS: 00000282
RAX: 3c8d4f5bec190900 RBX: 0000000000000000 RCX: 3c8d4f5bec190900
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 0000000000000001
RBP: ffffc900031d7cc0 R08: ffffffff8e8ad9ef R09: 1ffffffff1d15b3d
R10: dffffc0000000000 R11: fffffbfff1d15b3e R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200063af84
 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:inode_init_always+0x3a8/0xc90 fs/inode.c:187
Code: 00 00 c7 83 60 04 00 00 00 00 00 00 48 8d 7b 5c 48 89 f8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 ef 06 00 00 c7 43 5c 00 00 00 00 <48> 8d bb 88 01 00 00 48 89 f8 48 c1 e8 03 80 3c 28 00 74 05 e8 bf
RSP: 0018:ffffc900031d7d88 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88807851cec0 RCX: ffffffff81f51725
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88807851cf1c
RBP: dffffc0000000000 R08: ffff88807851d0d3 R09: 1ffff1100f0a3a1a
R10: dffffc0000000000 R11: ffffed100f0a3a1b R12: ffff88807851ced8
R13: ffff88801ee4a7a0 R14: 1ffff1100f0a39df R15: ffff88807851d0d0
 alloc_inode fs/inode.c:268 [inline]
 new_inode_pseudo+0x95/0x1d0 fs/inode.c:1049
 sock_alloc net/socket.c:634 [inline]
 __sock_create+0x12d/0x940 net/socket.c:1534
 sock_create net/socket.c:1626 [inline]
 __sys_socketpair+0x1c1/0x550 net/socket.c:1777
 __do_sys_socketpair net/socket.c:1830 [inline]
 __se_sys_socketpair net/socket.c:1827 [inline]
 __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1827
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f35daf9aeb9
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:00007f35dbe33028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f35db215fa0 RCX: 00007f35daf9aeb9
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000001
RBP: 00007f35db008c1f R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f35db216038 R14: 00007f35db215fa0 R15: 00007ffebd9062f8
 </TASK>