syzbot

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kernel BUG at net/core/skbuff.c:2047!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1056 Comm: syz-executor.1 Not tainted 6.4.0-rc3-syzkaller-00081-geb03e3181354 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/16/2023
RIP: 0010:pskb_expand_head+0x12fc/0x1340 net/core/skbuff.c:2047
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e f3 ff ff 4c 89 f7 e8 75 60 4c f9 e9 51 f3 ff ff e8 6b 8c f4 f8 0f 0b e8 64 8c f4 f8 <0f> 0b e8 ad 1d 18 02 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc900047cf340 EFLAGS: 00010287
RAX: ffffffff8896f03c RBX: 0000000000000002 RCX: 0000000000040000
RDX: ffffc90003241000 RSI: 00000000000043dc RDI: 00000000000043dd
RBP: ffffc900047cf460 R08: ffffffff8896de76 R09: ffffed100f7449ad
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807ba24c80 R14: ffff88807ba24d4c R15: 0000000000000140
FS:  00007f70f2f52700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f266f90e845 CR3: 000000004144a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __bpf_try_make_writable net/core/filter.c:1658 [inline]
 sk_skb_try_make_writable net/core/filter.c:1881 [inline]
 ____sk_skb_pull_data net/core/filter.c:1895 [inline]
 sk_skb_pull_data+0x72/0xb0 net/core/filter.c:1884
 bpf_prog_53daab6e9cefb4fc+0x1a/0x1c
 bpf_dispatcher_nop_func include/linux/bpf.h:1168 [inline]
 __bpf_prog_run include/linux/filter.h:600 [inline]
 bpf_prog_run include/linux/filter.h:607 [inline]
 bpf_prog_run_pin_on_cpu include/linux/filter.h:624 [inline]
 sk_psock_verdict_recv+0x2f5/0x5a0 net/core/skmsg.c:1201
 tcp_read_skb+0x4a1/0x780 net/ipv4/tcp.c:1775
 tcp_data_queue+0x21c9/0x6fd0 net/ipv4/tcp_input.c:5080
 tcp_rcv_established+0xab7/0x1f80 net/ipv4/tcp_input.c:6019
 tcp_v4_do_rcv+0x6bd/0xb50 net/ipv4/tcp_ipv4.c:1722
 sk_backlog_rcv include/net/sock.h:1113 [inline]
 __release_sock+0x19c/0x4b0 net/core/sock.c:2917
 __sk_flush_backlog+0x26/0x40 net/core/sock.c:2937
 sk_flush_backlog include/net/sock.h:1203 [inline]
 tcp_sendmsg_locked+0x313d/0x4100 net/ipv4/tcp.c:1325
 tcp_sendmsg+0x30/0x50 net/ipv4/tcp.c:1487
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 __sys_sendto+0x475/0x630 net/socket.c:2144
 __do_sys_sendto net/socket.c:2156 [inline]
 __se_sys_sendto net/socket.c:2152 [inline]
 __x64_sys_sendto+0xde/0xf0 net/socket.c:2152
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f70f228c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f70f2f52168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f70f23abf80 RCX: 00007f70f228c169
RDX: 0000000000100000 RSI: 0000000020000280 RDI: 0000000000000003
RBP: 00007f70f22e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc8869139f R14: 00007f70f2f52300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pskb_expand_head+0x12fc/0x1340 net/core/skbuff.c:2047
Code: 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e f3 ff ff 4c 89 f7 e8 75 60 4c f9 e9 51 f3 ff ff e8 6b 8c f4 f8 0f 0b e8 64 8c f4 f8 <0f> 0b e8 ad 1d 18 02 48 8b 4c 24 10 80 e1 07 80 c1 03 38 c1 0f 8c
RSP: 0018:ffffc900047cf340 EFLAGS: 00010287
RAX: ffffffff8896f03c RBX: 0000000000000002 RCX: 0000000000040000
RDX: ffffc90003241000 RSI: 00000000000043dc RDI: 00000000000043dd
RBP: ffffc900047cf460 R08: ffffffff8896de76 R09: ffffed100f7449ad
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff88807ba24c80 R14: ffff88807ba24d4c R15: 0000000000000140
FS:  00007f70f2f52700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3d46d88218 CR3: 000000004144a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400