invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 25583 Comm: syz-executor.3 Not tainted 5.1.0-rc7+ #96 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1276 [inline] RIP: 0010:close_fs_devices.part.0+0x5bf/0x790 fs/btrfs/volumes.c:1300 Code: 3c 03 0f 8e 44 01 00 00 48 8b 45 c0 c7 80 30 01 00 00 00 00 00 00 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 11 ad c6 fe <0f> 0b e8 0a ad c6 fe 0f 0b e8 03 ad c6 fe 0f 0b e9 16 ff ff ff e8 RSP: 0018:ffff888060d87770 EFLAGS: 00010212 RAX: 0000000000040000 RBX: ffff888080b3ed00 RCX: ffffc9000c4aa000 RDX: 0000000000017908 RSI: ffffffff82a9df9f RDI: 0000000000000007 RBP: ffff888060d877e0 R08: ffff8880577063c0 R09: ffff888057706c88 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88808e519b40 R15: fffffffffffffff4 FS: 00007fa1bac03700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31123000 CR3: 0000000057e01000 CR4: 00000000001406f0 Call Trace: close_fs_devices fs/btrfs/volumes.c:1332 [inline] btrfs_close_devices+0xa0/0x200 fs/btrfs/volumes.c:1318 btrfs_mount_root+0xf0c/0x1220 fs/btrfs/super.c:1569 legacy_get_tree+0xf2/0x200 fs/fs_context.c:584 vfs_get_tree+0x123/0x450 fs/super.c:1481 fc_mount+0x17/0xc0 fs/namespace.c:982 vfs_kern_mount.part.0+0xd8/0xf0 fs/namespace.c:1012 vfs_kern_mount+0x40/0x60 fs/namespace.c:999 btrfs_mount+0x2b4/0x15e2 fs/btrfs/super.c:1620 legacy_get_tree+0xf2/0x200 fs/fs_context.c:584 vfs_get_tree+0x123/0x450 fs/super.c:1481 do_new_mount fs/namespace.c:2622 [inline] do_mount+0x1436/0x2c40 fs/namespace.c:2942 ksys_mount+0xdb/0x150 fs/namespace.c:3151 __do_sys_mount fs/namespace.c:3165 [inline] __se_sys_mount fs/namespace.c:3162 [inline] __x64_sys_mount+0xbe/0x150 fs/namespace.c:3162 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b81a Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 2d 8e 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 0a 8e fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007fa1bac02a88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa1bac02b40 RCX: 000000000045b81a RDX: 00007fa1bac02ae0 RSI: 0000000020000000 RDI: 00007fa1bac02b00 RBP: 0000000000000001 R08: 00007fa1bac02b40 R09: 00007fa1bac02ae0 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000004 R13: 00000000004c7853 R14: 00000000004dd868 R15: 0000000000000003 Modules linked in: ---[ end trace 92d21ffc8970c079 ]--- RIP: 0010:btrfs_close_one_device fs/btrfs/volumes.c:1276 [inline] RIP: 0010:close_fs_devices.part.0+0x5bf/0x790 fs/btrfs/volumes.c:1300 Code: 3c 03 0f 8e 44 01 00 00 48 8b 45 c0 c7 80 30 01 00 00 00 00 00 00 48 83 c4 48 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 11 ad c6 fe <0f> 0b e8 0a ad c6 fe 0f 0b e8 03 ad c6 fe 0f 0b e9 16 ff ff ff e8 RSP: 0018:ffff888060d87770 EFLAGS: 00010212 RAX: 0000000000040000 RBX: ffff888080b3ed00 RCX: ffffc9000c4aa000 RDX: 0000000000017908 RSI: ffffffff82a9df9f RDI: 0000000000000007 RBP: ffff888060d877e0 R08: ffff8880577063c0 R09: ffff888057706c88 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88808e519b40 R15: fffffffffffffff4 FS: 00007fa1bac03700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000070d158 CR3: 0000000057e01000 CR4: 00000000001406e0