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: 20721 Comm: syz-executor2 Not tainted 4.19.0+ #315
kobject: 'loop3' (00000000183f37c1): kobject_uevent_env
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 net/netfilter/nf_conntrack_proto_icmp.c:297
Code: b5 41 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 30 79 24 fb 4c 89 e8 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
kobject: 'loop3' (00000000183f37c1): fill_kobj_path: path = '/devices/virtual/block/loop3'
RSP: 0018:ffff8801bcf6f220 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff100379ede45 RCX: ffffc90006571000
RDX: 00000000000008dd RSI: ffffffff865affd0 RDI: ffff8801ba8eb140
RBP: ffff8801bcf6f2b0 R08: ffff8801bfc44680 R09: ffff8801005fa6e8
R10: ffffed00200bf4dc R11: ffff8801005fa6e0 R12: ffff8801ba8eb140
R13: 0000000000000000 R14: ffff8801bcf6f288 R15: dffffc0000000000
kobject: 'loop4' (000000002b6951fe): kobject_uevent_env
FS:  00007fa76b9ff700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000008b37d0 CR3: 00000001c07eb000 CR4: 00000000001426e0
Call Trace:
kobject: 'loop4' (000000002b6951fe): fill_kobj_path: path = '/devices/virtual/block/loop4'
 cttimeout_default_fill_info net/netfilter/nfnetlink_cttimeout.c:411 [inline]
 cttimeout_default_get+0x644/0x9e0 net/netfilter/nfnetlink_cttimeout.c:457
 nfnetlink_rcv_msg+0xdd3/0x10c0 net/netfilter/nfnetlink.c:228
kobject: 'loop4' (000000002b6951fe): kobject_uevent_env
kobject: 'loop4' (000000002b6951fe): fill_kobj_path: path = '/devices/virtual/block/loop4'
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477
kobject: 'loop3' (00000000183f37c1): kobject_uevent_env
 nfnetlink_rcv+0x1c0/0x4d0 net/netfilter/nfnetlink.c:560
kobject: 'loop3' (00000000183f37c1): fill_kobj_path: path = '/devices/virtual/block/loop3'
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:621 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:631
 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116
kobject: 'loop3' (00000000183f37c1): kobject_uevent_env
kobject: 'loop3' (00000000183f37c1): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (000000002b6951fe): kobject_uevent_env
kobject: 'loop4' (000000002b6951fe): fill_kobj_path: path = '/devices/virtual/block/loop4'
 __sys_sendmsg+0x11d/0x280 net/socket.c:2154
kobject: 'loop3' (00000000183f37c1): kobject_uevent_env
kobject: 'loop3' (00000000183f37c1): fill_kobj_path: path = '/devices/virtual/block/loop3'
 __do_sys_sendmsg net/socket.c:2163 [inline]
 __se_sys_sendmsg net/socket.c:2161 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
kobject: 'loop1' (000000006e961a22): kobject_uevent_env
kobject: 'loop1' (000000006e961a22): fill_kobj_path: path = '/devices/virtual/block/loop1'
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
kobject: 'loop0' (000000003c4cf4f4): kobject_uevent_env
RSP: 002b:00007fa76b9fec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569
RDX: 0000000000000000 RSI: 0000000020dddfc8 RDI: 0000000000000004
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa76b9ff6d4
R13: 00000000004c3b01 R14: 00000000004d5bf0 R15: 00000000ffffffff
Modules linked in:
kobject: 'loop0' (000000003c4cf4f4): fill_kobj_path: path = '/devices/virtual/block/loop0'
---[ end trace 702be0caf3f9e97e ]---
RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 net/netfilter/nf_conntrack_proto_icmp.c:297
Code: b5 41 c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 30 79 24 fb 4c 89 e8 48 c1 e8 03 <42> 0f b6 14 38 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffff8801bcf6f220 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff100379ede45 RCX: ffffc90006571000
RDX: 00000000000008dd RSI: ffffffff865affd0 RDI: ffff8801ba8eb140
validate_nla: 71 callbacks suppressed
netlink: 'syz-executor2': attribute type 3 has an invalid length.
RBP: ffff8801bcf6f2b0 R08: ffff8801bfc44680 R09: ffff8801005fa6e8
netlink: 'syz-executor2': attribute type 2 has an invalid length.
R10: ffffed00200bf4dc R11: ffff8801005fa6e0 R12: ffff8801ba8eb140
kobject: 'loop5' (000000006733f1a2): kobject_uevent_env
R13: 0000000000000000 R14: ffff8801bcf6f288 R15: dffffc0000000000
kobject: 'loop5' (000000006733f1a2): fill_kobj_path: path = '/devices/virtual/block/loop5'
FS:  00007fa76b9ff700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000707158 CR3: 00000001c07eb000 CR4: 00000000001426e0