netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3961 at net/core/dev.c:3249 skb_checksum_help+0x33c/0x4a0 Modules linked in: CPU: 0 PID: 3961 Comm: syz-executor238 Not tainted 5.15.115-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_checksum_help+0x33c/0x4a0 lr : skb_checksum_help+0x338/0x4a0 net/core/dev.c:3249 sp : ffff80001cb46b00 x29: ffff80001cb46b20 x28: 0000000000000586 x27: 000000000000061f x26: dfff800000000000 x25: 0000000000000621 x24: 0000000000005653 x23: 0000000000000586 x22: ffff0000c8989350 x21: 0000000000000519 x20: 00000000ffffffea x19: ffff0000c8989300 x18: 0000000000000200 x17: ff8080000fd25888 x16: ffff8000084c3554 x15: 0000000000000000 x14: 0000000000000000 x13: ffffffffffffffff x12: 0000000000000000 x11: ff8080000fd84588 x10: 0000000000000000 x9 : ffff80000fd84588 x8 : ffff0000c8653680 x7 : ffff80000fd3724c x6 : ffff80000fd37204 x5 : ffff80001cb46a90 x4 : ffff80001cb46a80 x3 : 000000000000006d x2 : 00000000000004fa x1 : 0000000000000519 x0 : 0000000000000621 Call trace: skb_checksum_help+0x33c/0x4a0 ip_do_fragment+0x198/0x199c net/ipv4/ip_output.c:774 ip_fragment+0x11c/0x308 ip_finish_output_gso net/ipv4/ip_output.c:279 [inline] __ip_finish_output+0x280/0x458 net/ipv4/ip_output.c:301 ip_finish_output+0x40/0x218 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip_output+0x330/0x49c net/ipv4/ip_output.c:430 dst_output include/net/dst.h:449 [inline] ip_local_out+0x120/0x160 net/ipv4/ip_output.c:126 iptunnel_xmit+0x404/0x850 net/ipv4/ip_tunnel_core.c:82 ip_tunnel_xmit+0x180c/0x200c net/ipv4/ip_tunnel.c:810 __gre_xmit net/ipv4/ip_gre.c:469 [inline] ipgre_xmit+0x5dc/0x8d8 net/ipv4/ip_gre.c:661 __netdev_start_xmit include/linux/netdevice.h:5019 [inline] netdev_start_xmit include/linux/netdevice.h:5033 [inline] xmit_one net/core/dev.c:3594 [inline] dev_hard_start_xmit+0x2bc/0x92c net/core/dev.c:3610 __dev_queue_xmit+0x13a8/0x2a6c net/core/dev.c:4225 dev_queue_xmit+0x24/0x34 net/core/dev.c:4258 packet_snd net/packet/af_packet.c:3035 [inline] packet_sendmsg+0x3654/0x4c68 net/packet/af_packet.c:3066 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg net/socket.c:724 [inline] ____sys_sendmsg+0x584/0x870 net/socket.c:2412 ___sys_sendmsg+0x214/0x294 net/socket.c:2466 __sys_sendmsg net/socket.c:2495 [inline] __do_sys_sendmsg net/socket.c:2504 [inline] __se_sys_sendmsg net/socket.c:2502 [inline] __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2502 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 127135 hardirqs last enabled at (127134): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (127135): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387 softirqs last enabled at (126766): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (126766): [] release_sock+0x1e4/0x270 net/core/sock.c:3242 softirqs last disabled at (126802): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace a14e41e7762f3c64 ]---