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: 1 PID: 18684 at net/core/dev.c:3262 skb_warn_bad_offload+0x90/0x104 net/core/dev.c:3262
gretap0: caps=(0x00000006401d7869, 0x0000000000000000)
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 18684 Comm: syz-executor.0 Not tainted 6.6.0-rc6-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<8181f400>] (dump_backtrace) from [<8181f4fc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
 r7:00000000 r6:82622a04 r5:60000093 r4:81fb57a0
[<8181f4e4>] (show_stack) from [<8183c824>] (__dump_stack lib/dump_stack.c:88 [inline])
[<8181f4e4>] (show_stack) from [<8183c824>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<8183c7dc>] (dump_stack_lvl) from [<8183c848>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000000 r4:82854d14
[<8183c830>] (dump_stack) from [<8181ffa4>] (panic+0x120/0x374 kernel/panic.c:340)
[<8181fe84>] (panic) from [<80242e4c>] (check_panic_on_warn kernel/panic.c:236 [inline])
[<8181fe84>] (panic) from [<80242e4c>] (print_tainted+0x0/0xa0 kernel/panic.c:231)
 r3:8260c484 r2:00000001 r1:81f9e2a8 r0:81fa5e5c
 r7:8136f9ac
[<80242dd8>] (check_panic_on_warn) from [<80243040>] (__warn+0x7c/0x180 kernel/panic.c:673)
[<80242fc4>] (__warn) from [<8024332c>] (warn_slowpath_fmt+0x1e8/0x1f4 kernel/panic.c:706)
 r8:00000009 r7:8214cbd4 r6:eaa49bfc r5:8472de00 r4:00000000
[<80243148>] (warn_slowpath_fmt) from [<8136f9ac>] (skb_warn_bad_offload+0x90/0x104 net/core/dev.c:3262)
 r10:00000000 r9:00000000 r8:83fcb800 r7:00000006 r6:83fcb800 r5:83fcb890
 r4:87c66840
[<8136f91c>] (skb_warn_bad_offload) from [<813af270>] (__skb_gso_segment+0x100/0x16c net/core/gso.c:127)
 r6:00000001 r5:00000000 r4:87c66840
[<813af170>] (__skb_gso_segment) from [<81370484>] (skb_gso_segment include/net/gso.h:83 [inline])
[<813af170>] (__skb_gso_segment) from [<81370484>] (validate_xmit_skb+0x1bc/0x364 net/core/dev.c:3629)
 r7:eaa49cef r6:00000006 r5:401d7869 r4:87c66840
[<813702c8>] (validate_xmit_skb) from [<81370670>] (validate_xmit_skb_list+0x44/0x78 net/core/dev.c:3679)
 r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:eaa49cef r5:83fcb800
 r4:00000000
[<8137062c>] (validate_xmit_skb_list) from [<813e094c>] (sch_direct_xmit+0x2d4/0x448 net/sched/sch_generic.c:327)
 r9:00000001 r8:00000000 r7:83fcb800 r6:841da400 r5:87c66840 r4:87884400
[<813e0678>] (sch_direct_xmit) from [<813711fc>] (__dev_xmit_skb net/core/dev.c:3775 [inline])
[<813e0678>] (sch_direct_xmit) from [<813711fc>] (__dev_queue_xmit+0x4e4/0xe84 net/core/dev.c:4310)
 r9:a3e9b2a0 r8:878844c4 r7:00000001 r6:00000000 r5:87884400 r4:87c66840
[<81370d18>] (__dev_queue_xmit) from [<816737a8>] (dev_queue_xmit include/linux/netdevice.h:3082 [inline])
[<81370d18>] (__dev_queue_xmit) from [<816737a8>] (packet_xmit net/packet/af_packet.c:276 [inline])
[<81370d18>] (__dev_queue_xmit) from [<816737a8>] (packet_xmit+0x9c/0x100 net/packet/af_packet.c:273)
 r10:8bedf100 r9:eaa49e90 r8:87c66840 r7:8470a800 r6:8470a800 r5:849cac80
 r4:87c66840
[<8167370c>] (packet_xmit) from [<816779a4>] (packet_snd net/packet/af_packet.c:3087 [inline])
[<8167370c>] (packet_xmit) from [<816779a4>] (packet_sendmsg+0xed0/0x14d0 net/packet/af_packet.c:3119)
 r7:8470a800 r6:8470a800 r5:849cac80 r4:00002378
[<81676ad4>] (packet_sendmsg) from [<81341798>] (sock_sendmsg_nosec net/socket.c:730 [inline])
[<81676ad4>] (packet_sendmsg) from [<81341798>] (__sock_sendmsg+0x44/0x78 net/socket.c:745)
 r10:00000122 r9:8472de00 r8:00000003 r7:00000000 r6:849cac80 r5:eaa49e90
 r4:00000000
[<81341754>] (__sock_sendmsg) from [<8134383c>] (__sys_sendto+0x118/0x15c net/socket.c:2194)
 r7:00000000 r6:849cac80 r5:04000002 r4:00000000
[<81343724>] (__sys_sendto) from [<8134389c>] (__do_sys_sendto net/socket.c:2206 [inline])
[<81343724>] (__sys_sendto) from [<8134389c>] (sys_sendto+0x1c/0x24 net/socket.c:2202)
 r8:80200288 r7:00000122 r6:0014c2cc r5:000002ff r4:00000000
[<81343880>] (sys_sendto) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66)
Exception stack(0xeaa49fa8 to 0xeaa49ff0)
9fa0:                   00000000 000002ff 00000003 20000080 00002378 04000002
9fc0: 00000000 000002ff 0014c2cc 00000122 7e96e32e 7e96e32f 003d0f00 76b750fc
9fe0: 76b74f08 76b74ef8 00016680 000509d0
Rebooting in 86400 seconds..