loop0: detected capacity change from 0 to 32768
bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=errors=continue,data_checksum=none,compression=lz4,journal_flush_disabled,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,version_upgrade=none,nocow
bcachefs (loop0): initializing new filesystem
bcachefs (loop0): sb invalid before write: Invalid superblock section journal_v2: journal bucket at sector 0
  journal_v2 (size 24):
  Buckets:  0-8
  
  
bcachefs (loop0): going read-write
bcachefs (loop0): sb invalid before write: Invalid superblock section journal_v2: journal bucket at sector 0
  journal_v2 (size 24):
  Buckets:  0-8
  
  
bcachefs (loop0): flushing journal and stopping allocators, journal seq 0
bcachefs (loop0): flushing journal and stopping allocators complete, journal seq 0
------------[ cut here ]------------
kernel BUG at fs/bcachefs/journal.c:413!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5328 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00257-gb5c6891b2c5b #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:journal_entry_open fs/bcachefs/journal.c:413 [inline]
RIP: 0010:__journal_res_get+0x2524/0x2830 fs/bcachefs/journal.c:616
Code: e8 61 6d 44 fd bb f5 f6 ff ff e9 f4 fe ff ff e8 72 43 b1 07 e8 4d 6d 44 fd 90 0f 0b e8 45 6d 44 fd 90 0f 0b e8 3d 6d 44 fd 90 <0f> 0b e8 35 6d 44 fd 90 0f 0b e8 2d 6d 44 fd 90 0f 0b e8 25 6d 44
RSP: 0018:ffffc9000d55ebc0 EFLAGS: 00010293
RAX: ffffffff847e4d83 RBX: 0000000000000000 RCX: ffff8880009fc880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d55ee90 R08: ffffffff847e379d R09: 1ffff1100a6c94ee
R10: dffffc0000000000 R11: ffffed100a6c94ef R12: ffff88805364a608
R13: 1ffff1100a6c94f7 R14: ffff888052800000 R15: ffff88805364a770
FS:  00007f0ba21126c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc7d275fac CR3: 0000000034e16000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bch2_journal_res_get_slowpath+0xe2/0xc40 fs/bcachefs/journal.c:710
 bch2_journal_res_get+0x168/0x210 fs/bcachefs/journal.h:401
 __bch2_journal_meta+0x94/0x290 fs/bcachefs/journal.c:955
 bch2_fs_journal_stop+0x1e3/0x450 fs/bcachefs/journal.c:1366
 __bch2_fs_read_only+0x327/0x4b0 fs/bcachefs/super.c:285
 __bch2_fs_read_write+0x28d/0x3c0 fs/bcachefs/super.c:522
 bch2_fs_read_write_early+0x2b/0x40 fs/bcachefs/super.c:541
 bch2_fs_initialize+0xa47/0x1620 fs/bcachefs/recovery.c:1132
 bch2_fs_start+0x301/0x620 fs/bcachefs/super.c:1060
 bch2_fs_get_tree+0x113e/0x18f0 fs/bcachefs/fs.c:2253
 vfs_get_tree+0x90/0x2b0 fs/super.c:1759
 do_new_mount+0x2cf/0xb70 fs/namespace.c:3881
 do_mount fs/namespace.c:4221 [inline]
 __do_sys_mount fs/namespace.c:4432 [inline]
 __se_sys_mount+0x38c/0x400 fs/namespace.c:4409
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0ba138f90a
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:00007f0ba2111e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0ba2111ef0 RCX: 00007f0ba138f90a
RDX: 00002000000000c0 RSI: 0000200000000000 RDI: 00007f0ba2111eb0
RBP: 00002000000000c0 R08: 00007f0ba2111ef0 R09: 0000000000800000
R10: 0000000000800000 R11: 0000000000000246 R12: 0000200000000000
R13: 00007f0ba2111eb0 R14: 0000000000005956 R15: 0000200000000240
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:journal_entry_open fs/bcachefs/journal.c:413 [inline]
RIP: 0010:__journal_res_get+0x2524/0x2830 fs/bcachefs/journal.c:616
Code: e8 61 6d 44 fd bb f5 f6 ff ff e9 f4 fe ff ff e8 72 43 b1 07 e8 4d 6d 44 fd 90 0f 0b e8 45 6d 44 fd 90 0f 0b e8 3d 6d 44 fd 90 <0f> 0b e8 35 6d 44 fd 90 0f 0b e8 2d 6d 44 fd 90 0f 0b e8 25 6d 44
RSP: 0018:ffffc9000d55ebc0 EFLAGS: 00010293
RAX: ffffffff847e4d83 RBX: 0000000000000000 RCX: ffff8880009fc880
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000d55ee90 R08: ffffffff847e379d R09: 1ffff1100a6c94ee
R10: dffffc0000000000 R11: ffffed100a6c94ef R12: ffff88805364a608
R13: 1ffff1100a6c94f7 R14: ffff888052800000 R15: ffff88805364a770
FS:  00007f0ba21126c0(0000) GS:ffff88808c59a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc7d275fac CR3: 0000000034e16000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400