loop7: detected capacity change from 0 to 32768
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UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:1601:11
index 26 is out of range for type 'struct lv[20]'
CPU: 0 PID: 8105 Comm: syz.7.459 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 ubsan_epilogue+0xa/0x30 lib/ubsan.c:217
 __ubsan_handle_out_of_bounds+0xe3/0xf0 lib/ubsan.c:348
 dtSplitPage+0x35b2/0x37d0 fs/jfs/jfs_dtree.c:1601
 dtSplitUp fs/jfs/jfs_dtree.c:1092 [inline]
 dtInsert+0x1072/0x5de0 fs/jfs/jfs_dtree.c:871
 jfs_rename+0x89e/0x1800 fs/jfs/namei.c:1224
 vfs_rename+0xba2/0xed0 fs/namei.c:4880
 do_renameat2+0x8e9/0xce0 fs/namei.c:5033
 __do_sys_rename fs/namei.c:5079 [inline]
 __se_sys_rename fs/namei.c:5077 [inline]
 __x64_sys_rename+0x86/0x90 fs/namei.c:5077
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f39a0f9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f39a1dc8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f39a1215fa0 RCX: 00007f39a0f9acb9
RDX: 0000000000000000 RSI: 0000200000000f40 RDI: 0000200000000400
RBP: 00007f39a1008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f39a1216038 R14: 00007f39a1215fa0 R15: 00007ffc05dce8e8
 </TASK>
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