R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000005 R13: 00007ffd02e0d050 R14: 00007ffd02e0d030 R15: 0000000000000002 ================================================================== BUG: KASAN: null-ptr-deref in udf_write_fi+0x4f3/0xba0 Write of size 18446744073709551572 at addr 0000000000000020 by task syz-executor591/3546 CPU: 0 PID: 3546 Comm: syz-executor591 Not tainted 6.1.37-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_report+0xe6/0x4f0 mm/kasan/report.c:398 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memset+0x1f/0x40 mm/kasan/shadow.c:44 udf_write_fi+0x4f3/0xba0 udf_delete_entry fs/udf/namei.c:577 [inline] udf_rename+0x8b3/0x14d0 fs/udf/namei.c:1173 vfs_rename+0xd8f/0x1190 fs/namei.c:4779 do_renameat2+0xb97/0x13b0 fs/namei.c:4930 __do_sys_renameat fs/namei.c:4970 [inline] __se_sys_renameat fs/namei.c:4967 [inline] __x64_sys_renameat+0xb8/0xd0 fs/namei.c:4967 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fafcedf3b29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd02e0cfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000108 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fafcedf3b29 RDX: 0000000000000004 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007ffd02e0d010 R08: 0000000000000002 R09: 00007ffd02e0d020 R10: 0000000020000080 R11: 0000000000000246 R12: 0000000000000005 R13: 00007ffd02e0d050 R14: 00007ffd02e0d030 R15: 0000000000000002 ==================================================================