skb linear:   000000a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
skb linear:   000000b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
skb linear:   000000c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3321 at net/core/dev.c:3302 skb_checksum_help+0x1c8/0x20c net/core/dev.c:3302
offset+2 (1706) > skb_headlen() (1672)
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 PID: 3321 Comm: syz-executor392 Not tainted 6.7.0-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<8184ae84>] (dump_backtrace) from [<8184af80>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
 r7:00000000 r6:82622dc4 r5:60000093 r4:81fc5e50
[<8184af68>] (show_stack) from [<81868888>] (__dump_stack lib/dump_stack.c:88 [inline])
[<8184af68>] (show_stack) from [<81868888>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<81868840>] (dump_stack_lvl) from [<818688ac>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000000 r4:82857d18
[<81868894>] (dump_stack) from [<8184ba28>] (panic+0x120/0x378 kernel/panic.c:344)
[<8184b908>] (panic) from [<8024398c>] (check_panic_on_warn kernel/panic.c:237 [inline])
[<8184b908>] (panic) from [<8024398c>] (print_tainted+0x0/0xa0 kernel/panic.c:232)
 r3:8260c484 r2:00000001 r1:81fae868 r0:81fb6500
 r7:81390f74
[<80243918>] (check_panic_on_warn) from [<80243b80>] (__warn+0x7c/0x180 kernel/panic.c:677)
[<80243b04>] (__warn) from [<80243e6c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:710)
 r8:00000009 r7:8215e0cc r6:dfc398b4 r5:8413c800 r4:00000000
[<80243c88>] (warn_slowpath_fmt) from [<81390f74>] (skb_checksum_help+0x1c8/0x20c net/core/dev.c:3302)
 r10:0000002f r9:84379600 r8:00000000 r7:000006aa r6:000006a8 r5:827e7d30
 r4:8465b240
[<81390dac>] (skb_checksum_help) from [<81527de8>] (ip_do_fragment+0x414/0x6f0 net/ipv4/ip_output.c:777)
 r7:00000000 r6:81526e0c r5:84150000 r4:8465b240
[<815279d4>] (ip_do_fragment) from [<81528120>] (ip_fragment.constprop.0+0x5c/0x104 net/ipv4/ip_output.c:584)
 r10:0000002f r9:00000000 r8:8465b9c0 r7:000005dc r6:00000000 r5:84150000
 r4:8465b240
[<815280c4>] (ip_fragment.constprop.0) from [<8152830c>] (ip_finish_output_gso net/ipv4/ip_output.c:286 [inline])
[<815280c4>] (ip_fragment.constprop.0) from [<8152830c>] (__ip_finish_output net/ipv4/ip_output.c:308 [inline])
[<815280c4>] (ip_fragment.constprop.0) from [<8152830c>] (__ip_finish_output+0x144/0x180 net/ipv4/ip_output.c:295)
 r5:84150000 r4:00000000
[<815281c8>] (__ip_finish_output) from [<81528374>] (ip_finish_output+0x2c/0xe0 net/ipv4/ip_output.c:323)
 r9:00000002 r8:84083800 r7:843ed000 r6:84150000 r5:8465b780 r4:00000000
[<81528348>] (ip_finish_output) from [<8152848c>] (NF_HOOK_COND include/linux/netfilter.h:303 [inline])
[<81528348>] (ip_finish_output) from [<8152848c>] (ip_output+0x64/0xf8 net/ipv4/ip_output.c:433)
 r7:843ed000 r6:00000000 r5:84150000 r4:8465b780
[<81528428>] (ip_output) from [<81529710>] (dst_output include/net/dst.h:451 [inline])
[<81528428>] (ip_output) from [<81529710>] (ip_local_out+0x40/0x44 net/ipv4/ip_output.c:129)
 r8:84150000 r7:00000000 r6:00000000 r5:84150000 r4:8465b780
[<815296d0>] (ip_local_out) from [<81593770>] (iptunnel_xmit+0x140/0x290 net/ipv4/ip_tunnel_core.c:82)
 r7:00000000 r6:84379600 r5:84083800 r4:8465b780
[<81593630>] (iptunnel_xmit) from [<8159d500>] (ip_tunnel_xmit+0x5b0/0xb14 net/ipv4/ip_tunnel.c:831)
 r10:84379600 r9:00000024 r8:0000000f r7:00000002 r6:00000024 r5:84083800
 r4:8465b780
[<8159cf50>] (ip_tunnel_xmit) from [<815adcd4>] (__gre_xmit+0x140/0x234 net/ipv4/ip_gre.c:469)
 r10:00000004 r9:00000000 r8:00000008 r7:84710048 r6:84083800 r5:8465b780
 r4:00000000
[<815adb94>] (__gre_xmit) from [<815ae07c>] (ipgre_xmit+0x134/0x26c net/ipv4/ip_gre.c:665)
 r10:00000000 r9:840baa00 r8:00000000 r7:84710048 r6:00000018 r5:84083800
 r4:8465b780
[<815adf48>] (ipgre_xmit) from [<81391d54>] (__netdev_start_xmit include/linux/netdevice.h:4989 [inline])
[<815adf48>] (ipgre_xmit) from [<81391d54>] (netdev_start_xmit include/linux/netdevice.h:5003 [inline])
[<815adf48>] (ipgre_xmit) from [<81391d54>] (xmit_one net/core/dev.c:3547 [inline])
[<815adf48>] (ipgre_xmit) from [<81391d54>] (dev_hard_start_xmit+0xe8/0x2ac net/core/dev.c:3563)
 r7:8413c800 r6:84083800 r5:81c459cc r4:8465b780
[<81391c6c>] (dev_hard_start_xmit) from [<81392230>] (__dev_queue_xmit+0x1d4/0xe4c net/core/dev.c:4351)
 r10:00000000 r9:00000000 r8:dfc39c58 r7:84083800 r6:840baa00 r5:824b5288
 r4:8465b780
[<8139205c>] (__dev_queue_xmit) from [<8169a390>] (dev_queue_xmit include/linux/netdevice.h:3171 [inline])
[<8139205c>] (__dev_queue_xmit) from [<8169a390>] (packet_xmit net/packet/af_packet.c:276 [inline])
[<8139205c>] (__dev_queue_xmit) from [<8169a390>] (packet_xmit+0x9c/0x100 net/packet/af_packet.c:273)
 r10:84713f00 r9:dfc39f38 r8:8465b780 r7:84226800 r6:84226800 r5:84c06780
 r4:8465b780
[<8169a2f4>] (packet_xmit) from [<8169e610>] (packet_snd net/packet/af_packet.c:3081 [inline])
[<8169a2f4>] (packet_xmit) from [<8169e610>] (packet_sendmsg+0xf00/0x1510 net/packet/af_packet.c:3113)
 r7:84226800 r6:84226800 r5:84c06780 r4:00003000
[<8169d710>] (packet_sendmsg) from [<813612d8>] (sock_sendmsg_nosec net/socket.c:730 [inline])
[<8169d710>] (packet_sendmsg) from [<813612d8>] (__sock_sendmsg+0x44/0x78 net/socket.c:745)
 r10:00000000 r9:dfc39dd4 r8:dfc39dd4 r7:00000000 r6:84c06780 r5:dfc39f38
 r4:00000000
[<81361294>] (__sock_sendmsg) from [<81362184>] (____sys_sendmsg+0x22c/0x2a8 net/socket.c:2584)
 r7:00000000 r6:00000000 r5:84c06780 r4:dfc39f38
[<81361f58>] (____sys_sendmsg) from [<81363ee0>] (___sys_sendmsg+0x9c/0xd0 net/socket.c:2638)
 r10:dfc39e34 r9:20002ac0 r8:00000000 r7:00000000 r6:84c06780 r5:dfc39f38
 r4:00000000
[<81363e44>] (___sys_sendmsg) from [<813643dc>] (__sys_sendmsg net/socket.c:2667 [inline])
[<81363e44>] (___sys_sendmsg) from [<813643dc>] (__do_sys_sendmsg net/socket.c:2676 [inline])
[<81363e44>] (___sys_sendmsg) from [<813643dc>] (sys_sendmsg+0x78/0xbc net/socket.c:2674)
 r10:00000128 r9:8413c800 r8:80200288 r7:00000000 r6:20002ac0 r5:84c06780
 r4:00000000
[<81364364>] (sys_sendmsg) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66)
Exception stack(0xdfc39fa8 to 0xdfc39ff0)
9fa0:                   00000004 00000005 00000003 20002ac0 00000000 20000100
9fc0: 00000004 00000005 00000000 00000128 00000001 7ea17c40 00000000 00003a97
9fe0: 7ea17bf0 7ea17be0 00010b04 00031a40
 r7:00000128 r6:00000000 r5:00000005 r4:00000004
Rebooting in 86400 seconds..