loop0: detected capacity change from 0 to 32768
bcachefs (/dev/loop0): error reading default superblock: checksum error, type crc32c_nonzero: got 374a981d should be 29d2fb78
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,compression=lz4,norecovery,recovery_pass_last=journal_replay,nojournal_transaction_names,nocow
bcachefs (loop0): recovering from clean shutdown, journal seq 7
bcachefs (loop0): Doing compatible version upgrade from 1.7: mi_btree_bitmap to 1.12: rebalance_work_acct_fix
  running recovery passes: check_allocations
bcachefs (loop0): flagging btree xattrs lost data
error reading btree root xattrs l=0: btree_node_read_error, fixing
bcachefs (loop0): will run btree node scan
invalid bkey u64s 11 type alloc_v4 0:14:0 len 0 ver 0: 
  gen 0 oldest_gen 0 data_type journal
  journal_seq       1
  need_discard      1
  need_inc_gen      1
  dirty_sectors     256
  stripe_sectors    0
  cached_sectors    0
  stripe            67108864
  stripe_redundancy 0
  io_time[READ]     1
  io_time[WRITE]    1
  fragmentation     0
  bp_start          8
  invalid data type (got 2 should be 7): delete?, fixing
bcachefs (loop0): scan_for_btree_nodes...
bcachefs (loop0): error starting kthread: 1
bcachefs (loop0): bch2_fs_recovery(): error EPERM
bcachefs (loop0): bch2_fs_start(): error starting filesystem EPERM
bcachefs (loop0): shutting down
bcachefs (loop0): shutdown complete
bcachefs: bch2_fs_get_tree() error: EPERM
Filesystem bcachefs get_tree() didn't set fc->root, returned 1
------------[ cut here ]------------
kernel BUG at fs/super.c:1810!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5117 Comm: syz.0.0 Not tainted 6.11.0-syzkaller-11558-g075dbe9f6e3c #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:vfs_get_tree+0x29f/0x2b0 fs/super.c:1810
Code: 1e 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 14 c4 ec ff 48 8b 33 48 c7 c7 e0 d3 18 8c 44 89 e2 e8 c2 44 b0 09 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc9000b13fd08 EFLAGS: 00010246
RAX: 000000000000003e RBX: ffffffff8ef5a1c0 RCX: c925d4a98e474a00
RDX: ffffc9000b553000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 1ffff1100809df96 R08: ffffffff81746bbc R09: 1ffff92001627f3c
R10: dffffc0000000000 R11: fffff52001627f3d R12: 0000000000000001
R13: dffffc0000000000 R14: ffff8880404efc98 R15: ffff8880404efcb0
FS:  00007f51f2b6a6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555743ac5f8 CR3: 000000003d848000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4055 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f51f1d7f6da
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f51f2b69e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f51f2b69ef0 RCX: 00007f51f1d7f6da
RDX: 0000000020005d80 RSI: 0000000020000100 RDI: 00007f51f2b69eb0
RBP: 0000000020005d80 R08: 00007f51f2b69ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000100
R13: 00007f51f2b69eb0 R14: 0000000000005ddc R15: 0000000020000400
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vfs_get_tree+0x29f/0x2b0 fs/super.c:1810
Code: 1e 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 14 c4 ec ff 48 8b 33 48 c7 c7 e0 d3 18 8c 44 89 e2 e8 c2 44 b0 09 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 90 90 90 90 90
RSP: 0018:ffffc9000b13fd08 EFLAGS: 00010246
RAX: 000000000000003e RBX: ffffffff8ef5a1c0 RCX: c925d4a98e474a00
RDX: ffffc9000b553000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 1ffff1100809df96 R08: ffffffff81746bbc R09: 1ffff92001627f3c
R10: dffffc0000000000 R11: fffff52001627f3d R12: 0000000000000001
R13: dffffc0000000000 R14: ffff8880404efc98 R15: ffff8880404efcb0
FS:  00007f51f2b6a6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555743ac5f8 CR3: 000000003d848000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400