ERROR: (device loop6): dbUpdatePMap: blocks are outside the map
blkno = 8ed2c, nblocks = 1
ERROR: (device loop6): dbUpdatePMap: blocks are outside the map
UFO tlock:0xffffc9000298a288
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:628:10
index 237 is out of range for type 'struct dtslot[128]'
CPU: 1 UID: 0 PID: 8826 Comm: syz.6.606 Not tainted 6.14.0-syzkaller-03576-g1e1ba8d23dae #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:453
 dtSearch+0x1be7/0x2530 fs/jfs/jfs_dtree.c:628
 jfs_lookup+0x18b/0x440 fs/jfs/namei.c:1461
 lookup_open fs/namei.c:3644 [inline]
 open_last_lookups fs/namei.c:3765 [inline]
 path_openat+0x11c5/0x35d0 fs/namei.c:4001
 do_filp_open+0x284/0x4e0 fs/namei.c:4031
 do_sys_openat2+0x12b/0x1d0 fs/open.c:1429
 do_sys_open fs/open.c:1444 [inline]
 __do_sys_openat fs/open.c:1460 [inline]
 __se_sys_openat fs/open.c:1455 [inline]
 __x64_sys_openat+0x249/0x2a0 fs/open.c:1455
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb3af8d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcb3be90038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fcb3b1a5fa0 RCX: 00007fcb3af8d169
RDX: 0000000000000000 RSI: 0000200000000000 RDI: ffffffffffffff9c
RBP: 00007fcb3b00e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000080 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcb3b1a5fa0 R15: 00007ffcfdfff238
 </TASK>
---[ end trace ]---