------------[ cut here ]------------
kernel BUG at fs/reiserfs/journal.c:505!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5874 Comm: syz.0.11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:reiserfs_in_journal+0xa53/0xa60 fs/reiserfs/journal.c:505
Code: 24 28 80 e2 07 80 c2 03 38 ca 0f 8c 73 fe ff ff 48 8b 7c 24 28 48 89 c3 e8 9a fd b5 ff 48 89 d8 e9 5e fe ff ff e8 2d 85 5d ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 66 0f 1f 00 55 41 57 41 56
RSP: 0018:ffffc90004b3f010 EFLAGS: 00010287
RAX: ffffffff82296043 RBX: ffff88805cf06000 RCX: 0000000000080000
RDX: ffffc9000ca19000 RSI: 00000000000008a9 RDI: 00000000000008aa
RBP: ffff88805cf06630 R08: ffff88805c140047 R09: 1ffff1100b828008
R10: dffffc0000000000 R11: ffffed100b828009 R12: ffffc90004bf1048
R13: ffffc90004bf1050 R14: dffffc0000000000 R15: 0000000000000213
FS:  00007fccfbff66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fccfddeb540 CR3: 000000002735e000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 is_block_in_journal fs/reiserfs/bitmap.c:125 [inline]
 scan_bitmap_block+0x4bb/0xe30 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+0x29a9/0x4f00 fs/reiserfs/bitmap.c:1375
 reiserfs_new_unf_blocknrs2 fs/reiserfs/reiserfs.h:3378 [inline]
 _allocate_block fs/reiserfs/inode.c:641 [inline]
 reiserfs_get_block+0x269d/0x40f0 fs/reiserfs/inode.c:756
 __block_write_begin_int+0x571/0x1b00 fs/buffer.c:2124
 reiserfs_write_begin+0x1fe/0x490 fs/reiserfs/inode.c:2771
 generic_perform_write+0x2fe/0x5c0 mm/filemap.c:4036
 generic_file_write_iter+0xaf/0x2e0 mm/filemap.c:4157
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x474/0x9a0 fs/read_write.c:584
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fccfdd9de59
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:00007fccfbff6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fccfe025fa0 RCX: 00007fccfdd9de59
RDX: 0000000000001006 RSI: 0000200000010140 RDI: 0000000000000009
RBP: 00007fccfde33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fccfe026038 R14: 00007fccfe025fa0 R15: 00007fffcc32af88
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:reiserfs_in_journal+0xa53/0xa60 fs/reiserfs/journal.c:505
Code: 24 28 80 e2 07 80 c2 03 38 ca 0f 8c 73 fe ff ff 48 8b 7c 24 28 48 89 c3 e8 9a fd b5 ff 48 89 d8 e9 5e fe ff ff e8 2d 85 5d ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 66 0f 1f 00 55 41 57 41 56
RSP: 0018:ffffc90004b3f010 EFLAGS: 00010287
RAX: ffffffff82296043 RBX: ffff88805cf06000 RCX: 0000000000080000
RDX: ffffc9000ca19000 RSI: 00000000000008a9 RDI: 00000000000008aa
RBP: ffff88805cf06630 R08: ffff88805c140047 R09: 1ffff1100b828008
R10: dffffc0000000000 R11: ffffed100b828009 R12: ffffc90004bf1048
R13: ffffc90004bf1050 R14: dffffc0000000000 R15: 0000000000000213
FS:  00007fccfbff66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e6af201170 CR3: 000000002735e000 CR4: 00000000003506e0