REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
REISERFS (device loop0): using 3.5.x disk format
REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage.
------------[ cut here ]------------
kernel BUG at fs/reiserfs/journal.c:505!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4312 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:reiserfs_in_journal+0xa87/0xa90 fs/reiserfs/journal.c:505
Code: 24 30 80 e2 07 80 c2 03 38 ca 0f 8c 74 fe ff ff 48 8b 7c 24 30 48 89 c3 e8 f6 90 bd ff 48 89 d8 e9 5f fe ff ff e8 29 85 78 ff <0f> 0b 0f 1f 80 00 00 00 00 55 41 57 41 56 41 55 41 54 53 50 49 89
RSP: 0018:ffffc90002f1ef80 EFLAGS: 00010293
RAX: ffffffff82009be7 RBX: ffff888076d92000 RCX: ffff888026c75940
RDX: 0000000000000000 RSI: 0000000000000213 RDI: 0000000000000213
RBP: 0000000000000926 R08: ffffc90002f1f0c0 R09: 1ffff1100d50aa08
R10: dffffc0000000000 R11: ffffed100d50aa09 R12: ffffc90003233048
R13: ffffc90003233050 R14: dffffc0000000000 R15: 0000000000000213
FS:  000055558a18b500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000004000 CR3: 0000000017fa7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 is_block_in_journal fs/reiserfs/bitmap.c:125 [inline]
 scan_bitmap_block+0x4a7/0xe20 fs/reiserfs/bitmap.c:203
 scan_bitmap fs/reiserfs/bitmap.c:408 [inline]
 allocate_without_wrapping_disk fs/reiserfs/bitmap.c:1161 [inline]
 blocknrs_and_prealloc_arrays_from_search_start fs/reiserfs/bitmap.c:1274 [inline]
 reiserfs_allocate_blocknrs+0x2988/0x4e80 fs/reiserfs/bitmap.c:1375
 reiserfs_new_unf_blocknrs2 fs/reiserfs/reiserfs.h:3377 [inline]
 _allocate_block fs/reiserfs/inode.c:649 [inline]
 reiserfs_get_block+0x2649/0x42a0 fs/reiserfs/inode.c:764
 __block_write_begin_int+0x565/0x15d0 fs/buffer.c:2012
 reiserfs_write_begin+0x34b/0x810 fs/reiserfs/inode.c:2790
 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785
 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x745/0xd60 fs/read_write.c:594
 ksys_write+0x152/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2928972819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcb3337318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2928bebfa0 RCX: 00007f2928972819
RDX: 000000000000fea7 RSI: 0000200000000080 RDI: 0000000000000004
RBP: 00007f2928a08c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2928bebfac R14: 00007f2928bebfa0 R15: 00007f2928bebfa0
 </TASK>
Modules linked in:
---[ end trace fc3ea22c6c7a696b ]---
RIP: 0010:reiserfs_in_journal+0xa87/0xa90 fs/reiserfs/journal.c:505
Code: 24 30 80 e2 07 80 c2 03 38 ca 0f 8c 74 fe ff ff 48 8b 7c 24 30 48 89 c3 e8 f6 90 bd ff 48 89 d8 e9 5f fe ff ff e8 29 85 78 ff <0f> 0b 0f 1f 80 00 00 00 00 55 41 57 41 56 41 55 41 54 53 50 49 89
RSP: 0018:ffffc90002f1ef80 EFLAGS: 00010293
RAX: ffffffff82009be7 RBX: ffff888076d92000 RCX: ffff888026c75940
RDX: 0000000000000000 RSI: 0000000000000213 RDI: 0000000000000213
RBP: 0000000000000926 R08: ffffc90002f1f0c0 R09: 1ffff1100d50aa08
R10: dffffc0000000000 R11: ffffed100d50aa09 R12: ffffc90003233048
R13: ffffc90003233050 R14: dffffc0000000000 R15: 0000000000000213
FS:  000055558a18b500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5dbf726000 CR3: 0000000017fa7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400