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: 10221 Comm: syz-executor5 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:dev_net include/linux/netdevice.h:2164 [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:ffff88019a49ed90 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88019a49f160 RCX: ffffc9000486b000 RDX: 00000000000000b0 RSI: ffffffff861297d8 RDI: 0000000000000580 RBP: ffff88019a49f4f0 R08: ffff8801bd60e5c0 R09: ffffed003b5a5b57 R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffffffff8a520de4 R13: ffffffff8a520de6 R14: 0000000000000000 R15: ffff8801d7ce7340 FS: 00007f6dc4e9a700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f06d1047300 CR3: 00000001c0fd8000 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:1245 [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: 'loop1' (000000000287760e): kobject_uevent_env ---[ end trace 5fadbc44f0e44f97 ]--- kobject: 'loop1' (000000000287760e): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (000000001380d831): kobject_uevent_env kobject: 'loop2' (000000001380d831): fill_kobj_path: path = '/devices/virtual/block/loop2' RIP: 0010:dev_net include/linux/netdevice.h:2164 [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 kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env kobject: 'loop4' (000000003aeb22ce): kobject_uevent_env kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' RSP: 0018:ffff88019a49ed90 EFLAGS: 00010202 kobject: 'loop4' (000000003aeb22ce): fill_kobj_path: path = '/devices/virtual/block/loop4' RAX: dffffc0000000000 RBX: ffff88019a49f160 RCX: ffffc9000486b000 kobject: 'loop0' (00000000160c04d5): kobject_uevent_env RDX: 00000000000000b0 RSI: ffffffff861297d8 RDI: 0000000000000580 kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env kobject: 'loop0' (00000000160c04d5): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env RBP: ffff88019a49f4f0 R08: ffff8801bd60e5c0 R09: ffffed003b5a5b57 kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' R10: ffffed003b5a5b57 R11: ffff8801dad2dabb R12: ffffffff8a520de4 kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' R13: ffffffff8a520de6 R14: 0000000000000000 R15: ffff8801d7ce7340 kobject: 'kvm' (0000000032ad04ec): kobject_uevent_env FS: 00007f6dc4e9a700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000 kobject: 'kvm' (0000000032ad04ec): fill_kobj_path: path = '/devices/virtual/misc/kvm' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe99aa11000 CR3: 00000001c0fd8000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400