syzbot

rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=2b7c/1/0x4000000000000000 softirq=82602/82605 fqs=5167
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   932070          0            0
rcu: 	cputime:    21558      30931           84   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=114457 q=896 ncpus=2)
CPU: 1 PID: 23053 Comm: syz.3.5125 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline]
RIP: 0010:__local_bh_enable_ip+0x142/0x1c0 kernel/softirq.c:413
Code: 8a e8 f2 bc 31 09 65 66 8b 05 ea 50 b1 7e 66 85 c0 75 54 bf 01 00 00 00 e8 cb 1a 0a 00 e8 c6 1d 3b 00 fb 65 8b 05 b6 50 b1 7e <85> c0 75 05 e8 35 38 ae ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00
RSP: 0018:ffffc900001f04e0 EFLAGS: 00000282
RAX: 0000000000000101 RBX: 0000000000000200 RCX: 270b32f9aced7900
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffffffff8b1c80e0
RBP: ffffc900001f0570 R08: ffffffff911be5ff R09: 1ffffffff2237cbf
R10: dffffc0000000000 R11: fffffbfff2237cc0 R12: ffffffff89509389
R13: dffffc0000000000 R14: dffffc0000000000 R15: 1ffff9200003e09c
FS:  00007fb172c0f6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f578c1456b8 CR3: 000000005e7d1000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 ip6t_do_table+0x135e/0x1510 net/ipv6/netfilter/ip6_tables.c:375
 ip6t_mangle_out net/ipv6/netfilter/ip6table_mangle.c:49 [inline]
 ip6table_mangle_hook+0x264/0x720 net/ipv6/netfilter/ip6table_mangle.c:71
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:259 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0x138a/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:ffffc90004c27920 EFLAGS: 00000282
RAX: 270b32f9aced7900 RBX: 0000000000000000 RCX: 270b32f9aced7900
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: 0000000000000001
RBP: ffffc90004c279c0 R08: ffffffff911be52f R09: 1ffffffff2237ca5
R10: dffffc0000000000 R11: fffffbfff2237ca6 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000984f24
 irqentry_exit+0x67/0x70 kernel/entry/common.c:438
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:put_cpu_partial+0x1b0/0x250 mm/slub.c:2742
Code: 3b 44 24 18 0f 85 b4 00 00 00 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3c 3d a5 08 f7 c5 00 02 00 00 74 c0 fb 4d 85 e4 <75> bf eb c8 e8 b7 14 47 02 85 c0 0f 84 e9 fe ff ff 83 3d 08 40 ac
RSP: 0018:ffffc90004c27a80 EFLAGS: 00000246
RAX: 270b32f9aced7900 RBX: ffff888142a6e640 RCX: 270b32f9aced7900
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffffffff8b1c80e0
RBP: 0000000000000282 R08: ffffffff911be52f R09: 1ffffffff2237ca5
R10: dffffc0000000000 R11: fffffbfff2237ca6 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88807c48da00 R15: ffff8880b8f44180
 __slab_free+0x319/0x400 mm/slub.c:3700
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x75/0xd0 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:306
 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]
 __kmem_cache_alloc_node+0x13a/0x250 mm/slub.c:3534
 __do_kmalloc_node mm/slab_common.c:1006 [inline]
 __kmalloc+0xa4/0x230 mm/slab_common.c:1020
 kmalloc include/linux/slab.h:604 [inline]
 sk_prot_alloc+0xe7/0x210 net/core/sock.c:2096
 sk_alloc+0x3a/0x360 net/core/sock.c:2152
 __netlink_create+0x6c/0x290 net/netlink/af_netlink.c:629
 netlink_create+0x3ee/0x5c0 net/netlink/af_netlink.c:690
 __sock_create+0x4a6/0x940 net/socket.c:1570
 sock_create net/socket.c:1626 [inline]
 __sys_socket_create net/socket.c:1663 [inline]
 __sys_socket+0xd7/0x1a0 net/socket.c:1714
 __do_sys_socket net/socket.c:1728 [inline]
 __se_sys_socket net/socket.c:1726 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1726
 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: 0033:0x7fb171d9aeb9
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:00007fb172c0f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007fb172015fa0 RCX: 00007fb171d9aeb9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007fb171e08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb172016038 R14: 00007fb172015fa0 R15: 00007ffe5fdc1508
 </TASK>