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BUG: KASAN: vmalloc-out-of-bounds in cleanup_bitmap_list+0x175/0x500 fs/reiserfs/journal.c:230
Read of size 8 at addr ffffc90004ee7000 by task syz-executor238/5135

CPU: 0 PID: 5135 Comm: syz-executor238 Not tainted 6.7.0-rc3-syzkaller-00024-g18d46e76d7c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:364 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:475
 kasan_report+0x142/0x170 mm/kasan/report.c:588
 cleanup_bitmap_list+0x175/0x500 fs/reiserfs/journal.c:230
 free_list_bitmaps+0x48/0x1a0 fs/reiserfs/journal.c:248
 free_journal_ram+0xf8/0x3c0 fs/reiserfs/journal.c:1886
 journal_init+0x311/0x2510 fs/reiserfs/journal.c:2909
 reiserfs_fill_super+0x1039/0x2620 fs/reiserfs/super.c:2022
 mount_bdev+0x237/0x300 fs/super.c:1650
 legacy_get_tree+0xef/0x190 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771
 do_new_mount+0x28f/0xae0 fs/namespace.c:3337
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f75454aea9a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd7175a088 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffd7175a0d0 RCX: 00007f75454aea9a
RDX: 0000000020001100 RSI: 0000000020000000 RDI: 00007ffd7175a0d0
RBP: 0000000020001100 R08: 00007ffd7175a110 R09: 00000000000010fb
R10: 0000000000000007 R11: 0000000000000286 R12: 0000000000001101
R13: 00007ffd7175a110 R14: 0000000020000100 R15: 0000000000000004
 </TASK>

The buggy address belongs to the virtual mapping at
 [ffffc90004edf000, ffffc90004ee8000) created by:
 reiserfs_allocate_list_bitmaps+0x50/0x220 fs/reiserfs/journal.c:289

Memory state around the buggy address:
 ffffc90004ee6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90004ee6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90004ee7000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                   ^
 ffffc90004ee7080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc90004ee7100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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