------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:2285!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 3727 Comm: kworker/u8:12 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:pskb_expand_head+0x1114/0x1160 net/core/skbuff.c:2285
Code: c9 f3 ff ff 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 0f 8c 24 f4 ff ff 48 8b 3c 24 e8 d7 f4 f5 f8 e9 16 f4 ff ff e8 0d d2 8f f8 90 <0f> 0b e8 05 d2 8f f8 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000c2d7448 EFLAGS: 00010293
RAX: ffffffff893126a3 RBX: ffff888076051dc0 RCX: ffff888030a50000
RDX: 0000000000000000 RSI: 00000000932ee810 RDI: 0000000000000000
RBP: 00000000932ee990 R08: 0000000000000000 R09: 0000000000000038
R10: dffffc0000000000 R11: ffffffff89eac510 R12: 00000000932ee810
R13: ffff888076051dc0 R14: 0000000000000820 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125f1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd05a61f98 CR3: 0000000021fac000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ipgre_header+0xd5/0x350 net/ipv4/ip_gre.c:900
 dev_hard_header include/linux/netdevice.h:3436 [inline]
 neigh_connected_output+0x286/0x460 net/core/neighbour.c:1618
 NF_HOOK_COND include/linux/netfilter.h:307 [inline]
 ip6_output+0x340/0x550 net/ipv6/ip6_output.c:247
 NF_HOOK include/linux/netfilter.h:318 [inline]
 ndisc_send_skb+0xbce/0x1510 net/ipv6/ndisc.c:512
 addrconf_dad_completed+0x7ae/0xd60 net/ipv6/addrconf.c:4360
 addrconf_dad_work+0xc36/0x14b0 net/ipv6/addrconf.c:-1
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pskb_expand_head+0x1114/0x1160 net/core/skbuff.c:2285
Code: c9 f3 ff ff 48 8b 0c 24 80 e1 07 80 c1 03 38 c1 0f 8c 24 f4 ff ff 48 8b 3c 24 e8 d7 f4 f5 f8 e9 16 f4 ff ff e8 0d d2 8f f8 90 <0f> 0b e8 05 d2 8f f8 90 0f 0b 48 8b 0c 24 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000c2d7448 EFLAGS: 00010293
RAX: ffffffff893126a3 RBX: ffff888076051dc0 RCX: ffff888030a50000
RDX: 0000000000000000 RSI: 00000000932ee810 RDI: 0000000000000000
RBP: 00000000932ee990 R08: 0000000000000000 R09: 0000000000000038
R10: dffffc0000000000 R11: ffffffff89eac510 R12: 00000000932ee810
R13: ffff888076051dc0 R14: 0000000000000820 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125f1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa29a9acd58 CR3: 0000000076330000 CR4: 00000000003526f0