================================================================== BUG: KASAN: use-after-free in udf_new_inode+0xde2/0xf10 Read of size 4 at addr ffff88814ebbcdc8 by task syz-executor.3/14967 CPU: 1 PID: 14967 Comm: syz-executor.3 Not tainted 6.1.85-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 udf_new_inode+0xde2/0xf10 udf_create+0x1f/0x140 fs/udf/namei.c:612 lookup_open fs/namei.c:3484 [inline] open_last_lookups fs/namei.c:3552 [inline] path_openat+0x12f1/0x2e60 fs/namei.c:3782 do_filp_open+0x230/0x480 fs/namei.c:3812 do_sys_openat2+0x13b/0x500 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1345 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f122147de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f121ffd50c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f12215ac050 RCX: 00007f122147de69 RDX: 000000000000275a RSI: 0000000020000080 RDI: ffffffffffffff9c RBP: 00007f12214ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f12215ac050 R15: 00007ffeabdfeef8 The buggy address belongs to the physical page: page:ffffea00053aef00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14ebbc flags: 0x57ff80000000000(node=1|zone=2|lastcpupid=0xfff) raw: 057ff80000000000 ffffea00053aef08 ffffea00053aef08 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner info is not present (never set?) Memory state around the buggy address: ffff88814ebbcc80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88814ebbcd00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88814ebbcd80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88814ebbce00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88814ebbce80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================