loop1: detected capacity change from 0 to 32768
UFO tlock:0x00000000f32a17f9
==================================================================
BUG: KASAN: use-after-free in dtInsertEntry+0x768/0xf60 fs/jfs/jfs_dtree.c:3689
Read of size 1 at addr ffff0000d5580e00 by task syz.1.98/4757

CPU: 0 PID: 4757 Comm: syz.1.98 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 print_address_description+0x88/0x218 mm/kasan/report.c:316
 print_report+0x50/0x68 mm/kasan/report.c:420
 kasan_report+0xa8/0x100 mm/kasan/report.c:524
 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348
 dtInsertEntry+0x768/0xf60 fs/jfs/jfs_dtree.c:3689
 dtInsert+0x6ec/0x55ac fs/jfs/jfs_dtree.c:894
 jfs_mkdir+0x5a4/0x8b4 fs/jfs/namei.c:270
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4114
 do_mkdirat+0x1b4/0x3e0 fs/namei.c:4139
 __do_sys_mkdirat fs/namei.c:4154 [inline]
 __se_sys_mkdirat fs/namei.c:4152 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4152
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

The buggy address belongs to the physical page:
page:00000000797604ff refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x115580
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000000 fffffc0003c7bc88 fffffc00034ddb88 0000000000000000
raw: 0000000000000000 ffff0000d8d680c0 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d5580d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000d5580d80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff0000d5580e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff0000d5580e80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff0000d5580f00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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