syzbot

------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:1727!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 289 Comm: kworker/0:2 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events sk_psock_backlog
RIP: 0010:pskb_expand_head+0x11a5/0x11d0 net/core/skbuff.c:1727
Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c de f3 ff ff 4c 89 e7 e8 6c 00 f4 fd e9 d1 f3 ff ff e8 22 88 b5 fd 0f 0b e8 1b 88 b5 fd <0f> 0b 48 8b 4d d0 80 e1 07 80 c1 03 38 c1 0f 8c b2 fa ff ff 48 8b
RSP: 0018:ffffc90007717a08 EFLAGS: 00010293
RAX: ffffffff83b32ed5 RBX: dffffc0000000000 RCX: ffff8881265093c0
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90007717aa8 R08: dffffc0000000000 R09: ffffed10237f3496
R10: ffffed10237f3496 R11: 1ffff110237f3495 R12: 0000000000000e80
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000008080
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000123ae5000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 __pskb_pull_tail+0xb1/0x1480 net/core/skbuff.c:2281
 __skb_linearize include/linux/skbuff.h:3529 [inline]
 skb_linearize include/linux/skbuff.h:3541 [inline]
 sk_psock_skb_ingress_enqueue+0x67/0x410 net/core/skmsg.c:539
 sk_psock_skb_ingress net/core/skmsg.c:583 [inline]
 sk_psock_handle_skb net/core/skmsg.c:621 [inline]
 sk_psock_backlog+0xa72/0x1230 net/core/skmsg.c:686
 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325
 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472
 kthread+0x411/0x500 kernel/kthread.c:337
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace 693bdef1f47fdc38 ]---
RIP: 0010:pskb_expand_head+0x11a5/0x11d0 net/core/skbuff.c:1727
Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c de f3 ff ff 4c 89 e7 e8 6c 00 f4 fd e9 d1 f3 ff ff e8 22 88 b5 fd 0f 0b e8 1b 88 b5 fd <0f> 0b 48 8b 4d d0 80 e1 07 80 c1 03 38 c1 0f 8c b2 fa ff ff 48 8b
RSP: 0018:ffffc90007717a08 EFLAGS: 00010293
RAX: ffffffff83b32ed5 RBX: dffffc0000000000 RCX: ffff8881265093c0
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90007717aa8 R08: dffffc0000000000 R09: ffffed10237f3496
R10: ffffed10237f3496 R11: 1ffff110237f3495 R12: 0000000000000e80
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000008080
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc90cd7b78 CR3: 000000012234e000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600