rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=6d04/1/0x4000000000000000 softirq=21320/21321 fqs=5234
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1158609          0            0
rcu: 	cputime:    20227      32262           75   ==> 52510(ms)
rcu: 	(t=10503 jiffies g=23053 q=2489 ncpus=2)
CPU: 0 PID: 8116 Comm: syz.3.666 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:seqcount_lockdep_reader_access+0x19a/0x1d0 include/linux/seqlock.h:105
Code: 00 4d 85 e4 75 16 e8 b5 c4 0f 00 eb 15 e8 ae c4 0f 00 e8 89 bc 0d 09 4d 85 e4 74 ea e8 9f c4 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:ffffc900000072e0 EFLAGS: 00000246
RAX: ffffffff817757c1 RBX: 0000000000000000 RCX: ffff88802ba05a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007398 R08: ffffffff911c15f7 R09: 1ffffffff22382be
R10: dffffc0000000000 R11: fffffbfff22382bf R12: 0000000000000200
R13: 000001fb63109b96 R14: 1ffff92000000e5c R15: dffffc0000000000
FS:  00007f5df4a896c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5df4a47d58 CR3: 0000000024bcc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 0000000000000600
Call Trace:
 <IRQ>
 ktime_get_with_offset+0x94/0x330 kernel/time/timekeeping.c:889
 ktime_get_real include/linux/timekeeping.h:79 [inline]
 net_timestamp_set net/core/dev.c:2207 [inline]
 dev_queue_xmit_nit+0x8ce/0xbb0 net/core/dev.c:2357
 xmit_one net/core/dev.c:3628 [inline]
 dev_hard_start_xmit+0x148/0x740 net/core/dev.c:3648
 __dev_queue_xmit+0x19a3/0x3660 net/core/dev.c:4442
 dev_queue_xmit include/linux/netdevice.h:3113 [inline]
 neigh_hh_output include/net/neighbour.h:527 [inline]
 neigh_output include/net/neighbour.h:541 [inline]
 ip6_finish_output2+0xe06/0x1630 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:check_kcov_mode kernel/kcov.c:193 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x36/0x60 kernel/kcov.c:216
Code: 50 99 7c 7e 65 8b 15 51 99 7c 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 <83> fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc
RSP: 0018:ffffc900052b7890 EFLAGS: 00000246
RAX: ffffffff813b3c29 RBX: ffffffff8f1b7880 RCX: ffff88802ba05a00
RDX: 0000000000000000 RSI: ffffffff81f56022 RDI: ffffffff81f55fcc
RBP: ffffc900052b79b8 R08: ffffc900052b7a30 R09: 0000000000000005
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff81f56022 R15: ffffffff8ea40928
 unwind_next_frame+0x609/0x2970 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6e/0x4b0 mm/slab.h:767
 slab_alloc_node mm/slub.c:3495 [inline]
 slab_alloc mm/slub.c:3503 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3510 [inline]
 kmem_cache_alloc_lru+0x111/0x2d0 mm/slub.c:3526
 alloc_inode_sb include/linux/fs.h:2946 [inline]
 sock_alloc_inode+0x28/0xc0 net/socket.c:308
 alloc_inode fs/inode.c:261 [inline]
 new_inode_pseudo+0x63/0x1d0 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: 0033:0x7f5df3b9c799
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:00007f5df4a89028 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f5df3e15fa0 RCX: 00007f5df3b9c799
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f5df3c32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000012c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5df3e16038 R14: 00007f5df3e15fa0 R15: 00007ffe963dc998
 </TASK>