BUG: unable to handle kernel paging request at ffff85d4d3600038
#PF error: [normal kernel read fault]
kobject: 'loop1' (000000007c4da6de): kobject_uevent_env
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
kobject: 'loop1' (000000007c4da6de): fill_kobj_path: path = '/devices/virtual/block/loop1'
CPU: 0 PID: 11005 Comm: syz-executor.0 Not tainted 5.0.0-rc7+ #86
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dst_dev_put+0xaa/0x290 net/core/dst.c:175
Code: 00 0f 85 e4 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 38 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b7 01 00 00 <4d> 8b 75 38 4d 89 e5 4d 85 f6 74 33 e8 45 b8 f9 fb ba 01 00 00 00
syz-executor.2 (10998) used greatest stack depth: 22512 bytes left
RSP: 0018:ffff8880659b7790 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88808b27a51e RCX: ffffc90005e0b000
RDX: 1ffff0ba9a6c0007 RSI: ffffffff85762b83 RDI: ffff85d4d3600038
RBP: ffff8880659b77b0 R08: 1ffffd1ffff89cbe R09: fffff91ffff89cbf
R10: fffff91ffff89cbe R11: ffffe8ffffc4e5f7 R12: 0000000000000000
R13: ffff85d4d3600000 R14: ffff8880659b7840 R15: 0000000000000001
FS:  00007fa1a14a4700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff85d4d3600038 CR3: 000000006508b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rt_cache_route+0x29f/0x310 net/ipv4/route.c:1441
 rt_set_nexthop.constprop.0+0x405/0x11d0 net/ipv4/route.c:1541
 __mkroute_output net/ipv4/route.c:2297 [inline]
 ip_route_output_key_hash_rcu+0xa52/0x30e0 net/ipv4/route.c:2496
 ip_route_output_key_hash+0x212/0x380 net/ipv4/route.c:2325
 __ip_route_output_key include/net/route.h:124 [inline]
 ip_route_connect include/net/route.h:302 [inline]
 tcp_v4_connect+0x7ec/0x1c40 net/ipv4/tcp_ipv4.c:233
 __inet_stream_connect+0x83f/0xea0 net/ipv4/af_inet.c:655
 inet_stream_connect+0x58/0xa0 net/ipv4/af_inet.c:719
 __sys_connect+0x266/0x330 net/socket.c:1684
 __do_sys_connect net/socket.c:1695 [inline]
 __se_sys_connect net/socket.c:1692 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1692
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457e29
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fa1a14a3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457e29
RDX: 0000000000000010 RSI: 0000000020000100 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa1a14a46d4
R13: 00000000004be24e R14: 00000000004ce9d0 R15: 00000000ffffffff
Modules linked in:
CR2: ffff85d4d3600038
---[ end trace 49192c5aa966d361 ]---
RIP: 0010:dst_dev_put+0xaa/0x290 net/core/dst.c:175
Code: 00 0f 85 e4 01 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6b 08 49 8d 7d 38 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 b7 01 00 00 <4d> 8b 75 38 4d 89 e5 4d 85 f6 74 33 e8 45 b8 f9 fb ba 01 00 00 00
RSP: 0018:ffff8880659b7790 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88808b27a51e RCX: ffffc90005e0b000
RDX: 1ffff0ba9a6c0007 RSI: ffffffff85762b83 RDI: ffff85d4d3600038
RBP: ffff8880659b77b0 R08: 1ffffd1ffff89cbe R09: fffff91ffff89cbf
R10: fffff91ffff89cbe R11: ffffe8ffffc4e5f7 R12: 0000000000000000
R13: ffff85d4d3600000 R14: ffff8880659b7840 R15: 0000000000000001
FS:  00007fa1a14a4700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff85d4d3600038 CR3: 000000006508b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400