netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 3966 at net/core/dev.c:3243 skb_checksum_help+0x32c/0x4a0 Modules linked in: CPU: 1 PID: 3966 Comm: syz-executor126 Not tainted 5.15.135-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_checksum_help+0x32c/0x4a0 lr : skb_checksum_help+0x328/0x4a0 net/core/dev.c:3243 sp : ffff80001cd86ae0 x29: ffff80001cd86b00 x28: 0000000000002969 x27: 1fffe0001a385326 x26: dfff800000000000 x25: 0000000000000529 x24: 0000000000000068 x23: ffff0000d1c29930 x22: 1fffe0001a385326 x21: ffff0000d1c29934 x20: 00000000ffffffea x19: ffff0000d1c29940 x18: 0000000000000200 x17: ff8080000fd3d214 x16: ffff8000084c33b4 x15: ffff80000fd1985c x14: ffff80000fd19630 x13: ffffffffffffffff x12: 0000000000000000 x11: ff8080000fd9c2d8 x10: 0000000000000000 x9 : ffff80000fd9c2d8 x8 : ffff0000da810000 x7 : 0000000000000000 x6 : ffff80000805cbac x5 : ffff0000c5c45578 x4 : 0000000000000000 x3 : 0000000000000020 x2 : 0000000000000000 x1 : 0000000000000068 x0 : 0000000000000529 Call trace: skb_checksum_help+0x32c/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:291 [inline] ip_mc_output+0x56c/0x780 net/ipv4/ip_output.c:415 dst_output include/net/dst.h:443 [inline] ip_local_out+0x120/0x160 net/ipv4/ip_output.c:126 iptunnel_xmit+0x40c/0x8fc net/ipv4/ip_tunnel_core.c:82 ip_tunnel_xmit+0x1ad4/0x2358 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:5018 [inline] netdev_start_xmit include/linux/netdevice.h:5032 [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:3039 [inline] packet_sendmsg+0x3654/0x4c68 net/packet/af_packet.c:3070 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x584/0x870 net/socket.c:2429 ___sys_sendmsg+0x214/0x294 net/socket.c:2483 __sys_sendmsg net/socket.c:2512 [inline] __do_sys_sendmsg net/socket.c:2521 [inline] __se_sys_sendmsg net/socket.c:2519 [inline] __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2519 __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: 127581 hardirqs last enabled at (127580): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:231 hardirqs last disabled at (127581): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387 softirqs last enabled at (127262): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (127262): [] release_sock+0x1e4/0x270 net/core/sock.c:3257 softirqs last disabled at (127412): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 9289638ac28fab80 ]---