[Android 5.15] BUG: soft lockup in ipv6_rcv

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: ad06eaf051cd Merge branch 'android13-5.15' into branch 'an..
git tree: android13-5.15-lts
console output: https://syzkaller.appspot.com/x/log.txt?x=110e5427180000
kernel config: https://syzkaller.appspot.com/x/.config?x=49ce29477ba81e8f
dashboard link: https://syzkaller.appspot.com/bug?extid=0e63e6675924812caca7
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=102b13ab180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=132355f7180000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6a0458ccc79d/disk-ad06eaf0.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fae5dbed8277/vmlinux-ad06eaf0.xz
kernel image: https://storage.googleapis.com/syzbot-assets/b36532b01648/bzImage-ad06eaf0.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+0e63e6...@syzkaller.appspotmail.com

kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [kworker/1:1:39]
Modules linked in:
CPU: 1 PID: 39 Comm: kworker/1:1 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: ipv6_addrconf addrconf_dad_work

RIP: 0010:native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
RIP: 0010:arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
RIP: 0010:kvm_wait+0x147/0x180 arch/x86/kernel/kvm.c:918
Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 5b 03 f3 03 fb f4 <e9> 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c
RSP: 0018:ffffc900001d02e0 EFLAGS: 00000246

RAX: 0000000000000003 RBX: 1ffff9200003a060 RCX: ffffffff8154f88f
RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff88810bab2c88
RBP: ffffc900001d0390 R08: dffffc0000000000 R09: ffffed1021756592
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88810bab2c88 R14: 0000000000000003 R15: 1ffff9200003a064
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec6f8a148 CR3: 000000010a38c000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
pv_wait arch/x86/include/asm/paravirt.h:597 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x6bc/0xc40 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock include/linux/spinlock.h:187 [inline]
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
_raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:178
sock_hash_delete_elem+0xb1/0x2f0 net/core/sock_map.c:937
bpf_prog_2c29ac5cdc6b1842+0x3a/0xa78
bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
__bpf_prog_run include/linux/filter.h:625 [inline]
bpf_prog_run include/linux/filter.h:632 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline]
bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920
__bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x1f3/0x220 mm/slub.c:4569
sk_psock_free_link include/linux/skmsg.h:420 [inline]
sock_map_del_link net/core/sock_map.c:160 [inline]
sock_map_unref+0x352/0x4d0 net/core/sock_map.c:182
sock_hash_delete_elem+0x274/0x2f0 net/core/sock_map.c:941
bpf_prog_2c29ac5cdc6b1842+0x3a/0xa78
bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline]
__bpf_prog_run include/linux/filter.h:625 [inline]
bpf_prog_run include/linux/filter.h:632 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1883 [inline]
bpf_trace_run2+0xec/0x210 kernel/trace/bpf_trace.c:1920
__bpf_trace_kfree+0x6f/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x1f3/0x220 mm/slub.c:4569
skb_free_head net/core/skbuff.c:656 [inline]
skb_release_data+0x8a9/0xa80 net/core/skbuff.c:678
skb_release_all net/core/skbuff.c:743 [inline]
__kfree_skb net/core/skbuff.c:757 [inline]
kfree_skb_reason net/core/skbuff.c:778 [inline]
kfree_skb+0xba/0x360 net/core/skbuff.c:792
ip6_mc_input+0x233/0x2a0 net/ipv6/ip6_input.c:572
dst_input include/net/dst.h:454 [inline]
ip6_rcv_finish+0x186/0x350 net/ipv6/ip6_input.c:79
NF_HOOK include/linux/netfilter.h:305 [inline]
ipv6_rcv+0xeb/0x270 net/ipv6/ip6_input.c:300
__netif_receive_skb_one_core net/core/dev.c:5492 [inline]
__netif_receive_skb+0x1c6/0x530 net/core/dev.c:5606
process_backlog+0x31c/0x650 net/core/dev.c:6483
__napi_poll+0xc4/0x5a0 net/core/dev.c:7042
napi_poll net/core/dev.c:7109 [inline]
net_rx_action+0x47d/0xc50 net/core/dev.c:7196
__do_softirq+0x26d/0x5bf kernel/softirq.c:565
do_softirq+0xf6/0x150 kernel/softirq.c:452
</IRQ>
<TASK>
__local_bh_enable_ip+0x75/0x80 kernel/softirq.c:379
local_bh_enable+0x1f/0x30 include/linux/bottom_half.h:32
rcu_read_unlock_bh include/linux/rcupdate.h:766 [inline]
ip6_finish_output2+0xf9c/0x16e0 net/ipv6/ip6_output.c:127
__ip6_finish_output+0x60f/0x7c0 net/ipv6/ip6_output.c:197
ip6_finish_output+0x31/0x210 net/ipv6/ip6_output.c:207
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0x1f7/0x4d0 net/ipv6/ip6_output.c:230
dst_output include/net/dst.h:444 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
ndisc_send_skb+0x73e/0xc90 net/ipv6/ndisc.c:509
ndisc_send_ns+0x64d/0x830 net/ipv6/ndisc.c:651
addrconf_dad_work+0xb29/0x1710 net/ipv6/addrconf.c:4204
process_one_work+0x6bb/0xc10 kernel/workqueue.c:2325
worker_thread+0xad5/0x12a0 kernel/workqueue.c:2472
kthread+0x421/0x510 kernel/kthread.c:337
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
</TASK>


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