------------[ cut here ]------------ 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: 0 UID: 0 PID: 10638 Comm: syz.0.661 Not tainted 6.11.0-rc6-syzkaller-00308-gb31c44928842 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 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:1372 ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56 jfs_create+0x1be/0xbb0 fs/jfs/namei.c:92 lookup_open fs/namei.c:3578 [inline] open_last_lookups fs/namei.c:3647 [inline] path_openat+0x1a9a/0x3470 fs/namei.c:3883 do_filp_open+0x235/0x490 fs/namei.c:3913 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416 do_sys_open fs/open.c:1431 [inline] __do_sys_open fs/open.c:1439 [inline] __se_sys_open fs/open.c:1435 [inline] __x64_sys_open+0x225/0x270 fs/open.c:1435 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: 0033:0x7f31e057cef9 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:00007f31e1444038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007f31e0735f80 RCX: 00007f31e057cef9 RDX: 0000000000000000 RSI: 000000000014d27e RDI: 00000000200001c0 RBP: 00007f31e05ef046 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f31e0735f80 R15: 00007ffe95d0c2a8 ---[ end trace ]---