loop0: detected capacity change from 0 to 32768
 ... Log Wrap ... Log Wrap ... Log Wrap ...
find_entry called with index >= next_index
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1998:37
index -128 is out of range for type 'struct dtslot[128]'
CPU: 0 UID: 0 PID: 5296 Comm: syz-executor401 Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 ubsan_epilogue+0xa/0x40 lib/ubsan.c:231
 __ubsan_handle_out_of_bounds+0xe9/0xf0 lib/ubsan.c:453
 dtSplitRoot+0xae9/0x16c0 fs/jfs/jfs_dtree.c:1998
 dtSplitUp fs/jfs/jfs_dtree.c:993 [inline]
 dtInsert+0xef8/0x5f40 fs/jfs/jfs_dtree.c:871
 jfs_symlink+0x715/0xe60 fs/jfs/namei.c:1020
 vfs_symlink+0x140/0x2f0 fs/namei.c:4723
 do_symlinkat+0x1b1/0x3f0 fs/namei.c:4749
 __do_sys_symlink fs/namei.c:4770 [inline]
 __se_sys_symlink fs/namei.c:4768 [inline]
 __x64_sys_symlink+0x7a/0x90 fs/namei.c:4768
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6c1122ad9
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:00007ffcb8eea418 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007ff6c1122ad9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000200000000700
RBP: 00007ff6c119c5f0 R08: 000000000000620d R09: 00005555756d64c0
R10: 00007ffcb8eea2e0 R11: 0000000000000246 R12: 00007ffcb8eea440
R13: 00007ffcb8eea668 R14: 431bde82d7b634db R15: 00007ff6c116b03b
 </TASK>
---[ end trace ]---