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kernel BUG at fs/reiserfs/journal.c:505!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6325 Comm: syz.7.355 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 : ffff800021316310
x29: ffff800021316340 x28: ffff8000213b9000 x27: 1fffe0001fcdf8cf
x26: dfff800000000000 x25: 0000000000000000 x24: 0000000000000000
x23: ffff800020b99048 x22: ffff800020b99050 x21: 0000000000000213
x20: ffff0000fe6fc678 x19: ffff0000fe6fc000 x18: ffff800011b9bf60
x17: 1fffe00033ea637e x16: ffff8000082d7db8 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe000180c6663 x12: 0000000000ff0100
x11: ff00800008ce18bc x10: 0000000000000000 x9 : ffff800008ce18bc
x8 : ffff0000cf1bd340 x7 : ffff800008a8e298 x6 : 0000000000000000
x5 : 0000000000000001 x4 : ffff800021316450 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+0x260/0xc70 fs/reiserfs/bitmap.c:188
 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
 __kernel_write_iter+0x208/0x56c fs/read_write.c:517
 __kernel_write+0xe8/0x148 fs/read_write.c:537
 __dump_emit fs/coredump.c:873 [inline]
 dump_emit+0x224/0x324 fs/coredump.c:910
 writenote+0x17c/0x298 fs/binfmt_elf.c:1530
 write_note_info fs/binfmt_elf.c:1998 [inline]
 elf_core_dump+0x2584/0x2da0 fs/binfmt_elf.c:2341
 do_coredump+0x10cc/0x1c68 fs/coredump.c:824
 get_signal+0xdec/0x1304 kernel/signal.c:2857
 do_signal arch/arm64/kernel/signal.c:1095 [inline]
 do_notify_resume+0x28c/0x2aa4 arch/arm64/kernel/signal.c:1148
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_da+0xb4/0x144 arch/arm64/kernel/entry-common.c:516
 el0t_64_sync_handler+0x90/0xf0 arch/arm64/kernel/entry-common.c:658
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 97f0174b aa1303e0 17ffff88 97df2738 (d4210000) 
---[ end trace 0000000000000000 ]---