rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10498 ticks this GP) idle=92ac/1/0x4000000000000000 softirq=77827/77827 fqs=5249
rcu: hardirqs softirqs csw/system
rcu: number: 1383204 0 0
rcu: cputime: 17035 35444 62 ==> 52500(ms)
rcu: (t=10502 jiffies g=108937 q=510 ncpus=2)
CPU: 1 PID: 19444 Comm: syz.6.3798 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:kasan_quarantine_put+0x88/0x220 mm/kasan/quarantine.c:243
Code: e8 ed e9 ae ff 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 0f 85 83 00 00 00 41 f7 c7 00 02 00 00 74 01 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f c3 48 8d 80 c0 7a 03 00 45
RSP: 0018:ffffc900001f02c8 EFLAGS: 00000206
RAX: 0a6d18c97a3ee801 RBX: ffff88806d2b6b40 RCX: 0a6d18c97a3ee800
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: ffffffff8afc6f80
RBP: ffff88806d2b6b40 R08: ffffffff90d9463f R09: 1ffffffff21b28c7
R10: dffffc0000000000 R11: fffffbfff21b28c8 R12: 0000000000000000
R13: ffffc900001f0360 R14: 00000000000e1828 R15: 0000000000000282
FS: 00007f5cf0c0e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2fd5da CR3: 000000007563b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x280 mm/slub.c:3852
kfree_skb include/linux/skbuff.h:1232 [inline]
sit_tunnel_xmit+0x477/0x1f70 net/ipv6/sit.c:1091
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3619 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3635
__dev_queue_xmit+0x1a64/0x35a0 net/core/dev.c:4425
NF_HOOK+0x307/0x390 include/linux/netfilter.h:-1
arp_xmit+0x16c/0x270 net/ipv4/arp.c:663
arp_solicit+0xbe5/0xe20 net/ipv4/arp.c:392
neigh_probe net/core/neighbour.c:1080 [inline]
neigh_timer_handler+0xaad/0xff0 net/core/neighbour.c:1162
call_timer_fn+0x16e/0x530 kernel/time/timer.c:1701
expire_timers kernel/time/timer.c:1752 [inline]
__run_timers+0x52d/0x7d0 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+0xc7/0x190 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+0xb0/0x140 kernel/sched/core.c:7009
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 8b b3 eb f6 e8 26 3a 1c f7 fb bf 01 00 00 00 db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900033b7980 EFLAGS: 00000282
RAX: 0a6d18c97a3ee800 RBX: 0000000000000000 RCX: 0a6d18c97a3ee800
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001
RBP: ffffc900033b7a20 R08: ffffffff90d945ff R09: 1ffffffff21b28bf
R10: dffffc0000000000 R11: fffffbfff21b28c0 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000676f30
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:smp_call_function_single+0x45f/0x580 kernel/smp.c:652
Code: 44 89 e0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 54 ec 0a 00 0f 0b e9 8c fc ff ff e8 48 ec 0a 00 0f 0b e9 5f fd ff ff 3c ec 0a 00 e8 27 f7 85 ff eb 99 e8 30 ec 0a 00 0f 0b e9 1d fd
RSP: 0018:ffffc900033b7ae0 EFLAGS: 00000246
RAX: ffffffff817aa41b RBX: 0000000000000000 RCX: 0000000000000002
RDX: ffff88806bf90000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033b7bd0 R08: ffffffff90d945ff R09: 1ffffffff21b28bf
R10: dffffc0000000000 R11: fffffbfff21b28c0 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff92000676f60 R15: 1ffff92000676f60
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x591/0x8e0 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12915 [inline]
__se_sys_perf_event_open+0x17fa/0x1c20 kernel/events/core.c:12567
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5cefd8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5cf0c0e038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f5ceffe5fa0 RCX: 00007f5cefd8f749
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f5cefe13f91 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5ceffe6038 R14: 00007f5ceffe5fa0 R15: 00007ffc98cef668