skb linear: 00000110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ------------[ cut here ]------------ bridge1: caps=(0x00002007ffff78e9, 0x0000000000000000) WARNING: CPU: 1 PID: 27602 at net/core/dev.c:3262 skb_warn_bad_offload+0x118/0x240 net/core/dev.c:3262 Modules linked in: CPU: 1 PID: 27602 Comm: syz-executor.2 Not tainted 6.6.0-rc5-syzkaller-00067-g8182d7a3f1b8 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:skb_warn_bad_offload+0x118/0x240 net/core/dev.c:3262 Code: 70 03 00 00 e8 09 8c 54 f9 48 81 c5 f0 00 00 00 e8 fd 8b 54 f9 48 89 d9 48 89 ea 4c 89 e6 48 c7 c7 20 18 a3 8b e8 48 b4 1a f9 <0f> 0b 5b 5d 41 5c 41 5d e9 db 8b 54 f9 e8 d6 8b 54 f9 48 89 ea 49 RSP: 0018:ffffc90004a7f8e0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88804ec4e370 RCX: ffffc90007a43000 RDX: 0000000000040000 RSI: ffffffff814df0c6 RDI: 0000000000000001 RBP: ffff88800023c0f0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff88800023c000 R13: 0000000000000062 R14: 000000000000000e R15: 00002007ffff78e9 FS: 0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:00000000f7f14b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000014af8c8 CR3: 00000000797f9000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __skb_gso_segment+0x3ef/0x710 net/core/gso.c:127 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0x3a5/0xf10 net/core/dev.c:3625 validate_xmit_skb_list net/core/dev.c:3675 [inline] __dev_direct_xmit+0x1e3/0x780 net/core/dev.c:4384 dev_direct_xmit include/linux/netdevice.h:3095 [inline] packet_xmit+0x201/0x380 net/packet/af_packet.c:285 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x24d9/0x5580 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 __sys_sendto+0x255/0x340 net/socket.c:2194 __do_sys_sendto net/socket.c:2206 [inline] __se_sys_sendto net/socket.c:2202 [inline] __ia32_sys_sendto+0xdd/0x1b0 net/socket.c:2202 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f19579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f145ac EFLAGS: 00000292 ORIG_RAX: 0000000000000171 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000280 RDX: 000000000000fc13 RSI: 0000000000000800 RDI: 0000000000000000 RBP: 000000000000002f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi