invalid opcode: 0000 [#1] PREEMPT SMP KASAN
kobject: 'loop2' (000000009baa36b0): kobject_uevent_env
CPU: 0 PID: 3933 Comm: syz-executor5 Not tainted 4.20.0-rc4+ #136
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1044 [inline]
RIP: 0010:close_fs_devices.part.44+0x7c5/0xa20 fs/btrfs/volumes.c:1063
Code: 24 18 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 bd 01 00 00 48 83 6b 30 01 e9 7a fa ff ff e8 c2 7f 8c fe 0f 0b e8 bb 7f 8c fe <0f> 0b e8 b4 7f 8c fe 0f 0b e9 6f fd ff ff e8 a8 7f 8c fe 0f 0b e9
RSP: 0018:ffff888183cc71d8 EFLAGS: 00010212
RAX: 0000000000040000 RBX: ffff8881b9e14690 RCX: ffffc9000feba000
RDX: 00000000000277bd RSI: ffffffff82f30b45 RDI: 0000000000000282
RBP: ffff888183cc7380 R08: ffff8881ae9fc300 R09: ffffed103b5c5b67
R10: ffffed103b5c5b67 R11: ffff8881dae2db3b R12: ffff8881ce731b40
R13: dffffc0000000000 R14: ffff8881d851e000 R15: 0000000000000000
kobject: 'loop2' (000000009baa36b0): fill_kobj_path: path = '/devices/virtual/block/loop2'
FS:  00007f78ff686700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
kobject: 'loop1' (00000000f2246aaa): kobject_uevent_env
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d8698 CR3: 00000001b3550000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kobject: 'loop1' (00000000f2246aaa): fill_kobj_path: path = '/devices/virtual/block/loop1'
 close_fs_devices fs/btrfs/volumes.c:1095 [inline]
 btrfs_close_devices+0xa1/0x210 fs/btrfs/volumes.c:1081
kobject: 'loop1' (00000000f2246aaa): kobject_uevent_env
 btrfs_mount_root+0x13d2/0x1d70 fs/btrfs/super.c:1619
kobject: 'loop1' (00000000f2246aaa): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop1' (00000000f2246aaa): kobject_uevent_env
 mount_fs+0xae/0x31d fs/super.c:1261
 vfs_kern_mount.part.35+0xdc/0x4f0 fs/namespace.c:961
 vfs_kern_mount+0x40/0x60 fs/namespace.c:951
 btrfs_mount+0x4a3/0x2136 fs/btrfs/super.c:1670
kobject: 'loop1' (00000000f2246aaa): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop2' (000000009baa36b0): kobject_uevent_env
kobject: 'loop2' (000000009baa36b0): kobject_uevent_env
kobject: 'loop2' (000000009baa36b0): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop2' (000000009baa36b0): fill_kobj_path: path = '/devices/virtual/block/loop2'
 mount_fs+0xae/0x31d fs/super.c:1261
 vfs_kern_mount.part.35+0xdc/0x4f0 fs/namespace.c:961
 vfs_kern_mount fs/namespace.c:951 [inline]
 do_new_mount fs/namespace.c:2469 [inline]
 do_mount+0x581/0x31f0 fs/namespace.c:2801
 ksys_mount+0x12d/0x140 fs/namespace.c:3017
 __do_sys_mount fs/namespace.c:3031 [inline]
 __se_sys_mount fs/namespace.c:3028 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3028
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459fda
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f78ff685a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f78ff685b30 RCX: 0000000000459fda
RDX: 00007f78ff685ad0 RSI: 0000000020000100 RDI: 00007f78ff685af0
RBP: 0000000020000100 R08: 00007f78ff685b30 R09: 00007f78ff685ad0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000005
R13: 0000000000000000 R14: 00000000004d8ef0 R15: 0000000000000004
Modules linked in:
---[ end trace 6c3f6297e108337a ]---
RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1044 [inline]
RIP: 0010:close_fs_devices.part.44+0x7c5/0xa20 fs/btrfs/volumes.c:1063
Code: 24 18 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 bd 01 00 00 48 83 6b 30 01 e9 7a fa ff ff e8 c2 7f 8c fe 0f 0b e8 bb 7f 8c fe <0f> 0b e8 b4 7f 8c fe 0f 0b e9 6f fd ff ff e8 a8 7f 8c fe 0f 0b e9
RSP: 0018:ffff888183cc71d8 EFLAGS: 00010212
kobject: 'loop3' (00000000ad08598e): kobject_uevent_env
kobject: 'loop3' (00000000ad08598e): fill_kobj_path: path = '/devices/virtual/block/loop3'
RAX: 0000000000040000 RBX: ffff8881b9e14690 RCX: ffffc9000feba000
kobject: 'loop5' (0000000073e71113): kobject_uevent_env
kobject: 'loop5' (0000000073e71113): fill_kobj_path: path = '/devices/virtual/block/loop5'
RDX: 00000000000277bd RSI: ffffffff82f30b45 RDI: 0000000000000282
RBP: ffff888183cc7380 R08: ffff8881ae9fc300 R09: ffffed103b5c5b67
R10: ffffed103b5c5b67 R11: ffff8881dae2db3b R12: ffff8881ce731b40
kobject: 'loop3' (00000000ad08598e): kobject_uevent_env
R13: dffffc0000000000 R14: ffff8881d851e000 R15: 0000000000000000
FS:  00007f78ff686700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000728000 CR3: 00000001b3550000 CR4: 00000000001406f0
kobject: 'loop3' (00000000ad08598e): fill_kobj_path: path = '/devices/virtual/block/loop3'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop4' (0000000035712a4b): kobject_uevent_env
kobject: 'loop4' (0000000035712a4b): fill_kobj_path: path = '/devices/virtual/block/loop4'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400