syzbot

loop0: detected capacity change from 0 to 32768
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UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:661:7
index 128 is out of range for type 's64[128]' (aka 'long long[128]')
CPU: 1 PID: 5079 Comm: syz-executor426 Not tainted 6.10.0-rc7-syzkaller-00266-g4d145e3f830b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429
 dbNextAG+0x3f3/0x630 fs/jfs/jfs_dmap.c:661
 diAlloc+0x6c6/0x1760 fs/jfs/jfs_imap.c:1369
 ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56
 jfs_create+0x1be/0xb90 fs/jfs/namei.c:92
 lookup_open fs/namei.c:3505 [inline]
 open_last_lookups fs/namei.c:3574 [inline]
 path_openat+0x1a84/0x35f0 fs/namei.c:3810
 do_filp_open+0x235/0x490 fs/namei.c:3840
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1413
 do_sys_open fs/open.c:1428 [inline]
 __do_sys_openat fs/open.c:1444 [inline]
 __se_sys_openat fs/open.c:1439 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1439
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fedac5c8a99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff507eed48 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fedac5c8a99
RDX: 000000000000275a RSI: 00000000200005c0 RDI: 00000000ffffff9c
RBP: 00007fedac6425f0 R08: 0000555572be14c0 R09: 0000555572be14c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff507eed70
R13: 00007fff507eef98 R14: 431bde82d7b634db R15: 00007fedac61103b
 </TASK>
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