EXT4-fs warning (device loop3): ext4_update_dynamic_rev:793: updating to rev 1 because of new feature flag, running e2fsck is recommended EXT4-fs (loop3): mounting with "discard" option, but the device does not support discard EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue ------------[ cut here ]------------ kernel BUG at include/linux/skbuff.h:2150! invalid opcode: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 9692 Comm: syz-executor.3 Not tainted 4.14.296-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 task: ffff88804bfea680 task.stack: ffff88804bff8000 RIP: 0010:__skb_pull include/linux/skbuff.h:2150 [inline] RIP: 0010:skb_pull_inline include/linux/skbuff.h:2156 [inline] RIP: 0010:skb_pull net/core/skbuff.c:1745 [inline] RIP: 0010:skb_pull+0xe1/0x100 net/core/skbuff.c:1743 RSP: 0018:ffff88804bfff5d8 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff8880935edc00 RCX: ffffc900092e5000 RDX: 00000000000004e9 RSI: ffffffff85bf29b1 RDI: ffff8880935edc84 RBP: 0000000000000018 R08: 00000000000000c0 R09: ffffed10155e0f29 R10: ffff8880aaf0794f R11: 0000000000000000 R12: 00000000000010de R13: ffff8880935edcd8 R14: ffff8880935edcd0 R15: ffff8880aaf078e0 FS: 00007fc8ec2ca700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f925000 CR3: 00000000af990000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ipgre_xmit+0x26f/0x780 net/ipv4/ip_gre.c:658 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 packet_snd+0x13aa/0x26f0 net/packet/af_packet.c:3032 packet_sendmsg+0x12ed/0x33a0 net/packet/af_packet.c:3061 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0x100 net/socket.c:656 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062 __sys_sendmsg+0xa3/0x120 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x27/0x40 net/socket.c:2103 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fc8edd575a9 RSP: 002b:00007fc8ec2ca168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc8ede77f80 RCX: 00007fc8edd575a9 RDX: 0000000000000000 RSI: 0000000020003d40 RDI: 0000000000000004 RBP: 00007fc8eddb27b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffedf1d9e2f R14: 00007fc8ec2ca300 R15: 0000000000022000 Code: 00 00 4c 89 a3 d8 00 00 00 e8 2c 1e 96 fb 4c 89 e0 5b 5d 41 5c c3 e8 1f 1e 96 fb 45 31 e4 5b 4c 89 e0 5d 41 5c c3 e8 0f 1e 96 fb <0f> 0b e8 58 db bf fb e9 49 ff ff ff e8 4e db bf fb eb 8e e8 b7 RIP: __skb_pull include/linux/skbuff.h:2150 [inline] RSP: ffff88804bfff5d8 RIP: skb_pull_inline include/linux/skbuff.h:2156 [inline] RSP: ffff88804bfff5d8 RIP: skb_pull net/core/skbuff.c:1745 [inline] RSP: ffff88804bfff5d8 RIP: skb_pull+0xe1/0x100 net/core/skbuff.c:1743 RSP: ffff88804bfff5d8 ---[ end trace 2060561f7452ba0a ]---