RBP: 0000000000000001 R08: 00007f46a10a3b40 R09: 00007f46a10a3ae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 00000000004c89b9 R14: 00000000004df918 R15: 0000000000000003 ------------[ cut here ]------------ kernel BUG at fs/btrfs/volumes.c:1275! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 2841 Comm: syz-executor.5 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1275 [inline] RIP: 0010:close_fs_devices+0x8ff/0x910 fs/btrfs/volumes.c:1300 Code: 8b 5d c0 e9 4f ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 63 ff ff ff 48 89 df e8 9b fb fa fe e9 56 ff ff ff e8 e1 ff c1 fe <0f> 0b e8 da ff c1 fe 0f 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 RSP: 0018:ffff8880133af990 EFLAGS: 00010246 RAX: ffffffff82b18d3f RBX: ffff888020e32ea8 RCX: 0000000000040000 RDX: ffffc90005c15000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff8880133afa20 R08: ffffffff81790e54 R09: fffffbfff113a2cb R10: fffffbfff113a2cb R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888020e32eb0 R14: ffff888020e32dc0 R15: ffff88801c89ec80 FS: 00007f46a10a4700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f352b823518 CR3: 000000001cda6000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_close_devices+0x33/0x130 fs/btrfs/volumes.c:1318 btrfs_mount_root+0xa9d/0x1050 fs/btrfs/super.c:1572 legacy_get_tree+0xf9/0x1a0 fs/fs_context.c:661 vfs_get_tree+0x8f/0x380 fs/super.c:1413 fc_mount fs/namespace.c:962 [inline] vfs_kern_mount+0xc2/0x160 fs/namespace.c:992 btrfs_mount+0x34f/0x18f0 fs/btrfs/super.c:1619 legacy_get_tree+0xf9/0x1a0 fs/fs_context.c:661 vfs_get_tree+0x8f/0x380 fs/super.c:1413 do_new_mount fs/namespace.c:2791 [inline] do_mount+0x169d/0x2490 fs/namespace.c:3111 ksys_mount+0xcc/0x100 fs/namespace.c:3320 __do_sys_mount fs/namespace.c:3334 [inline] __se_sys_mount fs/namespace.c:3331 [inline] __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3331 do_syscall_64+0xfe/0x140 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c33a 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:00007f46a10a3a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f46a10a3b40 RCX: 000000000045c33a RDX: 00007f46a10a3ae0 RSI: 00000000200000c0 RDI: 00007f46a10a3b00 RBP: 0000000000000001 R08: 00007f46a10a3b40 R09: 00007f46a10a3ae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 00000000004c89b9 R14: 00000000004df918 R15: 0000000000000003 Modules linked in: ---[ end trace f2d13e34f23952a3 ]--- RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1275 [inline] RIP: 0010:close_fs_devices+0x8ff/0x910 fs/btrfs/volumes.c:1300 Code: 8b 5d c0 e9 4f ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 63 ff ff ff 48 89 df e8 9b fb fa fe e9 56 ff ff ff e8 e1 ff c1 fe <0f> 0b e8 da ff c1 fe 0f 0b 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 RSP: 0018:ffff8880133af990 EFLAGS: 00010246 RAX: ffffffff82b18d3f RBX: ffff888020e32ea8 RCX: 0000000000040000 RDX: ffffc90005c15000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffff8880133afa20 R08: ffffffff81790e54 R09: fffffbfff113a2cb R10: fffffbfff113a2cb R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888020e32eb0 R14: ffff888020e32dc0 R15: ffff88801c89ec80 FS: 00007f46a10a4700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f352be6d000 CR3: 000000001cda6000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400