bcachefs (da441363-bb6a-4ab9-999b-c1f40db4fee2): Using encoding defined by superblock: utf8-12.1.0
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WARNING: CPU: 0 PID: 6295 at fs/bcachefs/super.c:1253 bch2_dev_free+0x27f/0x2d0 fs/bcachefs/super.c:1253
Modules linked in:
CPU: 0 UID: 0 PID: 6295 Comm: syz.1.94 Not tainted 6.15.0-rc5-syzkaller-00353-gcd802e7e5f1e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:bch2_dev_free+0x27f/0x2d0 fs/bcachefs/super.c:1253
Code: 02 89 ee e8 63 d4 5c fd 40 84 ed 0f 84 de fe ff ff e9 cc fe ff ff e8 70 d9 5c fd 90 0f 0b 90 e9 e4 fd ff ff e8 62 d9 5c fd 90 <0f> 0b 90 e9 ae fd ff ff 4c 89 f7 e8 71 5f c1 fd e9 05 fe ff ff e8
RSP: 0018:ffffc9000bdff238 EFLAGS: 00010246
RAX: 0000000000080000 RBX: ffff8880594a4000 RCX: ffffc9000c5aa000
RDX: 0000000000080000 RSI: ffffffff845e56be RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880594a40c0
R13: ffffc9000bdff398 R14: ffff8880594a4000 R15: ffffc9000bdff340
FS:  00007fc59a02d6c0(0000) GS:ffff8881249e5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ba8da4560 CR3: 0000000031dae000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __bch2_dev_alloc+0xa4e/0xe80 fs/bcachefs/super.c:1422
 bch2_dev_alloc+0xb8/0x170 fs/bcachefs/super.c:1448
 bch2_fs_alloc+0x1b43/0x2470 fs/bcachefs/super.c:960
 bch2_fs_open+0x78e/0xb40 fs/bcachefs/super.c:2210
 bch2_fs_get_tree+0x104d/0x1860 fs/bcachefs/fs.c:2489
 vfs_get_tree+0x8e/0x340 fs/super.c:1759
 do_new_mount fs/namespace.c:3881 [inline]
 path_mount+0x14d4/0x1f20 fs/namespace.c:4208
 do_mount fs/namespace.c:4221 [inline]
 __do_sys_mount fs/namespace.c:4432 [inline]
 __se_sys_mount fs/namespace.c:4409 [inline]
 __x64_sys_mount+0x28d/0x310 fs/namespace.c:4409
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc59919010a
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:00007fc59a02ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc59a02cef0 RCX: 00007fc59919010a
RDX: 0000200000000100 RSI: 0000200000000180 RDI: 00007fc59a02ceb0
RBP: 0000200000000100 R08: 00007fc59a02cef0 R09: 0000000000010112
R10: 0000000000010112 R11: 0000000000000246 R12: 0000200000000180
R13: 00007fc59a02ceb0 R14: 0000000000005a12 R15: 0000200000000040
 </TASK>