EXT4-fs (sda1): resizing filesystem from 524032 to 524032 blocks
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 23082 Comm: syz-executor3 Not tainted 4.19.0-rc4-next-20180918+ #74
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dev_net include/linux/netdevice.h:2165 [inline]
RIP: 0010:__skb_flow_dissect+0x3b5/0x5980 net/core/flow_dissector.c:758
Code: 48 c1 ea 03 80 3c 02 00 0f 85 a6 4d 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 77 10 49 8d be 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 4d 00 00 4d 8b b6 80 05 00 00 48 b8 00 00 00
RSP: 0018:ffff88019938ed90 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88019938f160 RCX: ffffc90001bb4000
RDX: 00000000000000b0 RSI: ffffffff861227d8 RDI: 0000000000000580
RBP: ffff88019938f4f0 R08: ffff8801940fe0c0 R09: ffffed003b5a5b57
R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffffffff8a5202a4
R13: ffffffff8a5202a6 R14: 0000000000000000 R15: ffff8801966cba00
FS:  00007f81b98f6700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31af93a028 CR3: 00000001c01c1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_flow_dissect_flow_keys_basic include/linux/skbuff.h:1232 [inline]
 skb_get_poff+0x9b/0x1c0 net/core/flow_dissector.c:1486
 ____bpf_skb_get_pay_offset net/core/filter.c:126 [inline]
 bpf_skb_get_pay_offset+0x15/0x20 net/core/filter.c:124
Modules linked in:
---[ end trace f1a9e0b1f456382e ]---
RIP: 0010:dev_net include/linux/netdevice.h:2165 [inline]
RIP: 0010:__skb_flow_dissect+0x3b5/0x5980 net/core/flow_dissector.c:758
kobject: 'loop0' (00000000250f4cbb): kobject_uevent_env
Code: 48 c1 ea 03 80 3c 02 00 0f 85 a6 4d 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 77 10 49 8d be 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 4d 00 00 4d 8b b6 80 05 00 00 48 b8 00 00 00
kobject: 'loop0' (00000000250f4cbb): fill_kobj_path: path = '/devices/virtual/block/loop0'
RSP: 0018:ffff88019938ed90 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88019938f160 RCX: ffffc90001bb4000
EXT4-fs (sda1): resizing filesystem from 524032 to 524032 blocks
RDX: 00000000000000b0 RSI: ffffffff861227d8 RDI: 0000000000000580
kobject: 'loop2' (000000005378afdb): kobject_uevent_env
RBP: ffff88019938f4f0 R08: ffff8801940fe0c0 R09: ffffed003b5a5b57
kasan: CONFIG_KASAN_INLINE enabled
kobject: 'loop2' (000000005378afdb): fill_kobj_path: path = '/devices/virtual/block/loop2'
kasan: GPF could be caused by NULL-ptr deref or user memory access
R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffffffff8a5202a4
kobject: 'loop1' (000000002b4df767): kobject_uevent_env
general protection fault: 0000 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 23101 Comm: syz-executor3 Tainted: G      D           4.19.0-rc4-next-20180918+ #74
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dev_net include/linux/netdevice.h:2165 [inline]
RIP: 0010:__skb_flow_dissect+0x3b5/0x5980 net/core/flow_dissector.c:758
Code: 48 c1 ea 03 80 3c 02 00 0f 85 a6 4d 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 77 10 49 8d be 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 4d 00 00 4d 8b b6 80 05 00 00 48 b8 00 00 00
RSP: 0018:ffff880191e76d90 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff880191e77160 RCX: ffffc90004c5d000
RDX: 00000000000000b0 RSI: ffffffff861227d8 RDI: 0000000000000580
RBP: ffff880191e774f0 R08: ffff88019678e440 R09: 0000000000000000
R10: ffff880191e77508 R11: 0000000000000000 R12: ffffffff8a5202a4
R13: ffffffff8a5202a6 R14: 0000000000000000 R15: ffff88011b268e00
FS:  00007f81b9893700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81b9892db8 CR3: 00000001c01c1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'loop1' (000000002b4df767): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop5' (0000000052e6cf28): kobject_uevent_env
kobject: 'loop5' (0000000052e6cf28): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop4' (00000000c464197a): kobject_uevent_env
kobject: 'loop4' (00000000c464197a): fill_kobj_path: path = '/devices/virtual/block/loop4'
 skb_flow_dissect_flow_keys_basic include/linux/skbuff.h:1232 [inline]
 skb_get_poff+0x9b/0x1c0 net/core/flow_dissector.c:1486
 ____bpf_skb_get_pay_offset net/core/filter.c:126 [inline]
 bpf_skb_get_pay_offset+0x15/0x20 net/core/filter.c:124
Modules linked in:
kobject: 'loop5' (0000000052e6cf28): kobject_uevent_env
kobject: 'loop5' (0000000052e6cf28): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000250f4cbb): kobject_uevent_env
kobject: 'loop0' (00000000250f4cbb): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (000000005378afdb): kobject_uevent_env
kobject: 'loop2' (000000005378afdb): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop1' (000000002b4df767): kobject_uevent_env
kobject: 'loop1' (000000002b4df767): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (00000000c464197a): kobject_uevent_env
kobject: 'loop4' (00000000c464197a): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop0' (00000000250f4cbb): kobject_uevent_env
kobject: 'loop0' (00000000250f4cbb): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop5' (0000000052e6cf28): kobject_uevent_env
kobject: 'loop5' (0000000052e6cf28): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop2' (000000005378afdb): kobject_uevent_env
kobject: 'loop2' (000000005378afdb): fill_kobj_path: path = '/devices/virtual/block/loop2'
R13: ffffffff8a5202a6 R14: 0000000000000000 R15: ffff8801966cba00
kobject: 'loop1' (000000002b4df767): kobject_uevent_env
kobject: 'loop1' (000000002b4df767): fill_kobj_path: path = '/devices/virtual/block/loop1'
FS:  00007f81b98f6700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000706138 CR3: 00000001c01c1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---[ end trace f1a9e0b1f456382f ]---
RIP: 0010:dev_net include/linux/netdevice.h:2165 [inline]
RIP: 0010:__skb_flow_dissect+0x3b5/0x5980 net/core/flow_dissector.c:758
Code: 48 c1 ea 03 80 3c 02 00 0f 85 a6 4d 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 77 10 49 8d be 80 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 5c 4d 00 00 4d 8b b6 80 05 00 00 48 b8 00 00 00