skb linear: 000000f0: 00 00 00 00 00 00 0c 00 00 00 00 00 00 00 00 00 skb linear: 00000100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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: 0 PID: 9497 at net/core/dev.c:3232 skb_warn_bad_offload+0x119/0x230 net/core/dev.c:3232 Modules linked in: CPU: 0 PID: 9497 Comm: syz-executor.5 Not tainted 6.2.0-rc6-syzkaller-00163-g66a87fff1a87 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:skb_warn_bad_offload+0x119/0x230 net/core/dev.c:3232 Code: 70 03 00 00 e8 38 e9 b7 f9 4c 8d a5 e8 00 00 00 e8 2c e9 b7 f9 4c 89 e9 4c 89 e2 4c 89 f6 48 c7 c7 00 8e 5b 8b e8 61 68 f8 01 <0f> 0b 5b 5d 41 5c 41 5d 41 5e e9 08 e9 b7 f9 e8 03 e9 b7 f9 48 89 RSP: 0018:ffffc900064ff620 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff816610ec RDI: fffff52000c9feb6 RBP: ffff88802dcec000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000201 R11: 0000000000000000 R12: ffff88802dcec0e8 R13: ffffffff8b5bccc0 R14: ffff88802dcec000 R15: 000000000000000e FS: 0000000000000000(0000) GS:ffff8880b9800000(0063) knlGS:00000000f7f6bb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000002000f000 CR3: 0000000021021000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __skb_gso_segment+0x3eb/0x6e0 net/core/dev.c:3409 skb_gso_segment include/linux/netdevice.h:4809 [inline] netem_segment net/sched/sch_netem.c:418 [inline] netem_enqueue+0x1228/0x3570 net/sched/sch_netem.c:496 netem_enqueue+0x202f/0x3570 net/sched/sch_netem.c:483 dev_qdisc_enqueue+0x46/0x390 net/core/dev.c:3778 __dev_xmit_skb net/core/dev.c:3867 [inline] __dev_queue_xmit+0x2279/0x3ba0 net/core/dev.c:4215 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x334c/0x5500 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 __sys_sendto+0x23a/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __ia32_sys_sendto+0xdf/0x1b0 net/socket.c:2125 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 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: 0023:0xf7f70549 Code: 03 74 c0 01 10 05 03 74 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 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:00000000f7f6b5cc EFLAGS: 00000296 ORIG_RAX: 0000000000000171 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000280 RDX: 000000000000fc13 RSI: 0000000000000800 RDI: 0000000000000000 RBP: 000000000000002f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi