REISERFS (device loop4): checking transaction log (loop4)
REISERFS (device loop4): Using r5 hash to sort names
REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage.
------------[ cut here ]------------
kernel BUG at fs/reiserfs/journal.c:505!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 5194 Comm: syz.4.281 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : reiserfs_in_journal+0x97c/0x980 fs/reiserfs/journal.c:505
lr : reiserfs_in_journal+0x97c/0x980 fs/reiserfs/journal.c:505
sp : ffff8000215d6c50
x29: ffff8000215d6c80 x28: ffff800021629000 x27: 1fffe0001a4b50cf
x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000000
x23: ffff8000207bd048 x22: ffff8000207bd050 x21: 0000000000000213
x20: ffff0000d25a8678 x19: ffff0000d25a8000 x18: ffff800011b9bf60
x17: ffff80001835a000 x16: ffff8000082d7db8 x15: 0000000000000002
x14: 0000000000000001 x13: 1fffe0001ebedad7 x12: 0000000000080000
x11: 0000000000015cc8 x10: ffff8000289bd000 x9 : ffff800008ce18bc
x8 : 0000000000015cc9 x7 : ffff800008d019bc x6 : 0000000000000000
x5 : 0000000000000001 x4 : ffff8000215d6d80 x3 : 0000000000000001
x2 : 0000000000000213 x1 : 0000000000000213 x0 : 0000000000000213
Call trace:
 reiserfs_in_journal+0x97c/0x980 fs/reiserfs/journal.c:505
 is_block_in_journal fs/reiserfs/bitmap.c:125 [inline]
 scan_bitmap_block+0x414/0xc70 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+0x24a0/0x4104 fs/reiserfs/bitmap.c:1375
 _allocate_block fs/reiserfs/reiserfs.h:-1 [inline]
 reiserfs_get_block+0x1e08/0x36e8 fs/reiserfs/inode.c:756
 __block_write_begin_int+0x350/0x1388 fs/buffer.c:1991
 __block_write_begin+0x7c/0xa0 fs/buffer.c:2041
 reiserfs_write_begin+0x328/0x714 fs/reiserfs/inode.c:2775
 generic_perform_write+0x234/0x4f4 mm/filemap.c:3862
 __generic_file_write_iter+0x130/0x250 mm/filemap.c:3960
 generic_file_write_iter+0xb4/0x2b0 mm/filemap.c:3989
 do_iter_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x53c/0x940 fs/read_write.c:861
 vfs_writev fs/read_write.c:934 [inline]
 do_pwritev+0x1e8/0x338 fs/read_write.c:1031
 __do_sys_pwritev2 fs/read_write.c:1090 [inline]
 __se_sys_pwritev2 fs/read_write.c:1081 [inline]
 __arm64_sys_pwritev2+0xd4/0x108 fs/read_write.c:1081
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 97f0174b aa1303e0 17ffff88 97df2738 (d4210000) 
---[ end trace 0000000000000000 ]---