Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d 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 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007fb5ecd40a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb5ecd40b40 RCX: 000000000045c2ca
RDX: 00007fb5ecd40ae0 RSI: 0000000020000100 RDI: 00007fb5ecd40b00
RBP: 0000000000000001 R08: 00007fb5ecd40b40 R09: 00007fb5ecd40ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000005
R13: 00000000004c8980 R14: 00000000004df898 R15: 0000000000000004
------------[ cut here ]------------
kernel BUG at fs/btrfs/volumes.c:1056!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 17229 Comm: syz-executor.0 Not tainted 5.3.0-rc6-next-20190827 #74
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1056 [inline]
RIP: 0010:close_fs_devices.part.0+0x5fe/0x7f0 fs/btrfs/volumes.c:1081
Code: 3c 03 0f 8e da 01 00 00 48 8b 45 b8 c7 80 20 01 00 00 00 00 00 00 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f2 73 be fe <0f> 0b e8 eb 73 be fe 0f 0b e8 e4 73 be fe 0f 0b e9 16 ff ff ff e8
RSP: 0018:ffff888063207798 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff8880924a55c0 RCX: ffffc90005f3d000
RDX: 0000000000040000 RSI: ffffffff82b3b9de RDI: 0000000000000007
RBP: ffff888063207810 R08: ffff888093260440 R09: ffffed1015d06af5
R10: ffffed1015d06af4 R11: ffff8880ae8357a3 R12: 0000000000000000
R13: ffff88809bc04900 R14: dffffc0000000000 R15: fffffffffffffff4
FS:  00007fb5ecd41700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd25308fe8 CR3: 000000008b96a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 close_fs_devices fs/btrfs/volumes.c:1113 [inline]
 btrfs_close_devices+0xa0/0x200 fs/btrfs/volumes.c:1099
 btrfs_mount_root+0xf49/0x1290 fs/btrfs/super.c:1574
 legacy_get_tree+0x113/0x220 fs/fs_context.c:651
 vfs_get_tree+0x8f/0x380 fs/super.c:1482
 fc_mount+0x17/0xc0 fs/namespace.c:962
 vfs_kern_mount.part.0+0xd8/0xf0 fs/namespace.c:992
 vfs_kern_mount+0x40/0x60 fs/namespace.c:979
 btrfs_mount+0x2b4/0x15d8 fs/btrfs/super.c:1621
 legacy_get_tree+0x113/0x220 fs/fs_context.c:651
 vfs_get_tree+0x8f/0x380 fs/super.c:1482
 do_new_mount fs/namespace.c:2796 [inline]
 do_mount+0x13b3/0x1c30 fs/namespace.c:3116
 ksys_mount+0xdb/0x150 fs/namespace.c:3325
 __do_sys_mount fs/namespace.c:3339 [inline]
 __se_sys_mount fs/namespace.c:3336 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3336
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c2ca
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 9d 8d 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 7a 8d fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007fb5ecd40a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb5ecd40b40 RCX: 000000000045c2ca
RDX: 00007fb5ecd40ae0 RSI: 0000000020000100 RDI: 00007fb5ecd40b00
RBP: 0000000000000001 R08: 00007fb5ecd40b40 R09: 00007fb5ecd40ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000005
R13: 00000000004c8980 R14: 00000000004df898 R15: 0000000000000004
Modules linked in:
---[ end trace 79dd0343f46eedd9 ]---
RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1056 [inline]
RIP: 0010:close_fs_devices.part.0+0x5fe/0x7f0 fs/btrfs/volumes.c:1081
Code: 3c 03 0f 8e da 01 00 00 48 8b 45 b8 c7 80 20 01 00 00 00 00 00 00 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f2 73 be fe <0f> 0b e8 eb 73 be fe 0f 0b e8 e4 73 be fe 0f 0b e9 16 ff ff ff e8
RSP: 0018:ffff888063207798 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff8880924a55c0 RCX: ffffc90005f3d000
RDX: 0000000000040000 RSI: ffffffff82b3b9de RDI: 0000000000000007
RBP: ffff888063207810 R08: ffff888093260440 R09: ffffed1015d06af5
R10: ffffed1015d06af4 R11: ffff8880ae8357a3 R12: 0000000000000000
R13: ffff88809bc04900 R14: dffffc0000000000 R15: fffffffffffffff4
FS:  00007fb5ecd41700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000002119058 CR3: 000000008b96a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400