------------[ cut here ]------------
kernel BUG at net/ipv4/ip_output.c:776!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 21293 Comm: syz-executor3 Not tainted 4.20.0-rc6+ #106
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ip_do_fragment+0x2447/0x2ad0 net/ipv4/ip_output.c:776
Code: ff 48 89 cf e8 9a a8 23 fb e9 dc ea ff ff 48 89 df e8 cd a8 23 fb e9 02 e7 ff ff e8 23 a9 23 fb e9 97 e6 ff ff e8 a9 42 e0 fa <0f> 0b 4c 89 f7 e8 6f a8 23 fb e9 2f e6 ff ff 4c 89 e7 e8 62 a8 23
kobject: 'loop0' (0000000041d71fee): kobject_uevent_env
RSP: 0018:ffff888192f06618 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff8881c1c312c0 RCX: ffffc9000be2a000
RDX: 000000000001b994 RSI: ffffffff869f41c7 RDI: 0000000000000005
RBP: ffff888192f067f0 R08: ffff888197efe3c0 R09: ffffed103af54088
R10: ffffed103af5408a R11: ffff8881d7aa0453 R12: ffff8881c1c31384
R13: 00000000fffffff2 R14: ffff8881c1c31390 R15: dffffc0000000000
FS:  00007f545ddb2700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
kobject: 'loop0' (0000000041d71fee): fill_kobj_path: path = '/devices/virtual/block/loop0'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001532978 CR3: 00000001cf0d8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
kobject: 'loop5' (000000003124cc9f): kobject_uevent_env
Call Trace:
kobject: 'loop5' (000000003124cc9f): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (0000000004da57ee): kobject_uevent_env
 ip_fragment.constprop.50+0x179/0x240 net/ipv4/ip_output.c:549
 ip_finish_output+0x6b4/0xfa0 net/ipv4/ip_output.c:315
kobject: 'loop1' (0000000004da57ee): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (000000003124cc9f): kobject_uevent_env
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip_mc_output+0x2c4/0x15b0 net/ipv4/ip_output.c:390
kobject: 'loop5' (000000003124cc9f): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (0000000041d71fee): kobject_uevent_env
 dst_output include/net/dst.h:444 [inline]
 ip_local_out+0xc5/0x1b0 net/ipv4/ip_output.c:124
 iptunnel_xmit+0x63b/0x9c0 net/ipv4/ip_tunnel_core.c:91
 ip_tunnel_xmit+0x15b8/0x3c04 net/ipv4/ip_tunnel.c:787
kobject: 'loop0' (0000000041d71fee): fill_kobj_path: path = '/devices/virtual/block/loop0'
 __gre_xmit+0x5e1/0x980 net/ipv4/ip_gre.c:451
 ipgre_xmit+0x3e7/0xba0 net/ipv4/ip_gre.c:705
 __netdev_start_xmit include/linux/netdevice.h:4356 [inline]
 netdev_start_xmit include/linux/netdevice.h:4365 [inline]
 xmit_one net/core/dev.c:3257 [inline]
 dev_hard_start_xmit+0x295/0xc80 net/core/dev.c:3273
kobject: 'loop5' (000000003124cc9f): kobject_uevent_env
kobject: 'loop5' (000000003124cc9f): fill_kobj_path: path = '/devices/virtual/block/loop5'
 __dev_queue_xmit+0x2f71/0x3ad0 net/core/dev.c:3843
kobject: 'loop5' (000000003124cc9f): kobject_uevent_env
kobject: 'loop5' (000000003124cc9f): fill_kobj_path: path = '/devices/virtual/block/loop5'
 dev_queue_xmit+0x17/0x20 net/core/dev.c:3876
 __bpf_tx_skb net/core/filter.c:2017 [inline]
 __bpf_redirect_common net/core/filter.c:2055 [inline]
 __bpf_redirect+0x5cf/0xb20 net/core/filter.c:2062
 ____bpf_clone_redirect net/core/filter.c:2095 [inline]
 bpf_clone_redirect+0x2f6/0x490 net/core/filter.c:2067
kobject: 'loop1' (0000000004da57ee): kobject_uevent_env
 bpf_prog_bebbfe2050753572+0x7b/0x1000
kobject: 'loop1' (0000000004da57ee): fill_kobj_path: path = '/devices/virtual/block/loop1'
device nr0
 left promiscuous mode
kobject: 'loop2' (00000000bdbc1ffc): kobject_uevent_env
kobject: 'loop2' (00000000bdbc1ffc): fill_kobj_path: path = '/devices/virtual/block/loop2'
Modules linked in:
---[ end trace deff19e29efc1eda ]---
RIP: 0010:ip_do_fragment+0x2447/0x2ad0 net/ipv4/ip_output.c:776
Code: ff 48 89 cf e8 9a a8 23 fb e9 dc ea ff ff 48 89 df e8 cd a8 23 fb e9 02 e7 ff ff e8 23 a9 23 fb e9 97 e6 ff ff e8 a9 42 e0 fa <0f> 0b 4c 89 f7 e8 6f a8 23 fb e9 2f e6 ff ff 4c 89 e7 e8 62 a8 23
RSP: 0018:ffff888192f06618 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff8881c1c312c0 RCX: ffffc9000be2a000
RDX: 000000000001b994 RSI: ffffffff869f41c7 RDI: 0000000000000005
RBP: ffff888192f067f0 R08: ffff888197efe3c0 R09: ffffed103af54088
R10: ffffed103af5408a R11: ffff8881d7aa0453 R12: ffff8881c1c31384
R13: 00000000fffffff2 R14: ffff8881c1c31390 R15: dffffc0000000000
FS:  00007f545ddb2700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001532978 CR3: 00000001cf0d8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400