------------[ cut here ]------------
kernel BUG at fs/btrfs/volumes.c:1270!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 18225 Comm: syz-executor.0 Not tainted 5.2.0-rc7 #39
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1270 [inline]
RIP: 0010:close_fs_devices.part.0+0x5b9/0x790 fs/btrfs/volumes.c:1295
Code: 3c 03 0f 8e 44 01 00 00 48 8b 45 c0 c7 80 20 01 00 00 00 00 00 00 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 26 c4 fe <0f> 0b e8 40 26 c4 fe 0f 0b e8 39 26 c4 fe 0f 0b e9 16 ff ff ff e8
RSP: 0018:ffff88804f5477a0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88805a239040 RCX: ffffc90005e33000
RDX: 0000000000040000 RSI: ffffffff82ac9cf9 RDI: 0000000000000007
RBP: ffff88804f547810 R08: ffff88803a8f6000 R09: ffffed1015d06c70
R10: ffffed1015d06c6f R11: ffff8880ae83637b R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888097d0fb00 R15: fffffffffffffff4
FS:  00007f0795b27700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb25c275db8 CR3: 000000008e82b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 close_fs_devices fs/btrfs/volumes.c:1327 [inline]
 btrfs_close_devices+0xa0/0x200 fs/btrfs/volumes.c:1313
 btrfs_mount_root+0xf0c/0x1220 fs/btrfs/super.c:1569
 legacy_get_tree+0x108/0x220 fs/fs_context.c:661
 vfs_get_tree+0x8e/0x390 fs/super.c:1476
 fc_mount+0x17/0xc0 fs/namespace.c:983
 vfs_kern_mount.part.0+0xd8/0xf0 fs/namespace.c:1013
 vfs_kern_mount+0x40/0x60 fs/namespace.c:1000
 btrfs_mount+0x2b4/0x15e2 fs/btrfs/super.c:1620
 legacy_get_tree+0x108/0x220 fs/fs_context.c:661
 vfs_get_tree+0x8e/0x390 fs/super.c:1476
 do_new_mount fs/namespace.c:2791 [inline]
 do_mount+0x138c/0x1c00 fs/namespace.c:3111
 ksys_mount+0xdb/0x150 fs/namespace.c:3320
 __do_sys_mount fs/namespace.c:3334 [inline]
 __se_sys_mount fs/namespace.c:3331 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3331
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c21a
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:00007f0795b26a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0795b26b40 RCX: 000000000045c21a
RDX: 00007f0795b26ae0 RSI: 0000000020000100 RDI: 00007f0795b26b00
RBP: 0000000000000001 R08: 00007f0795b26b40 R09: 00007f0795b26ae0
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004
R13: 00000000004c86f2 R14: 00000000004df2d8 R15: 0000000000000003
Modules linked in:
---[ end trace 72428178ab9f3ae6 ]---
RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1270 [inline]
RIP: 0010:close_fs_devices.part.0+0x5b9/0x790 fs/btrfs/volumes.c:1295
Code: 3c 03 0f 8e 44 01 00 00 48 8b 45 c0 c7 80 20 01 00 00 00 00 00 00 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 47 26 c4 fe <0f> 0b e8 40 26 c4 fe 0f 0b e8 39 26 c4 fe 0f 0b e9 16 ff ff ff e8
RSP: 0018:ffff88804f5477a0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88805a239040 RCX: ffffc90005e33000
RDX: 0000000000040000 RSI: ffffffff82ac9cf9 RDI: 0000000000000007
RBP: ffff88804f547810 R08: ffff88803a8f6000 R09: ffffed1015d06c70
R10: ffffed1015d06c6f R11: ffff8880ae83637b R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888097d0fb00 R15: fffffffffffffff4
FS:  00007f0795b27700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000738000 CR3: 000000008e82b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600