RBP: 00007f0fe396e1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffef86154ef R14: 00007f0fe396e300 R15: 0000000000022000 ================================================================== BUG: KASAN: null-ptr-deref in udf_fiiter_add_entry+0x75b/0x10d0 fs/udf/namei.c:316 Write of size 5 at addr 0000000000000000 by task syz-executor.5/7678 CPU: 0 PID: 7678 Comm: syz-executor.5 Not tainted 6.2.0-rc2-next-20230105-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 kasan_report+0xc0/0xf0 mm/kasan/report.c:517 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x141/0x190 mm/kasan/generic.c:189 memcpy+0x3d/0x60 mm/kasan/shadow.c:66 udf_fiiter_add_entry+0x75b/0x10d0 fs/udf/namei.c:316 udf_add_nondir+0xda/0x360 fs/udf/namei.c:349 udf_create+0x12c/0x180 fs/udf/namei.c:384 lookup_open.isra.0+0xee7/0x1270 fs/namei.c:3413 open_last_lookups fs/namei.c:3481 [inline] path_openat+0x97a/0x2b40 fs/namei.c:3711 do_filp_open+0x1ba/0x410 fs/namei.c:3741 do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x143/0x1f0 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0fe2c8c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f0fe396e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f0fe2dabf80 RCX: 00007f0fe2c8c0c9 RDX: 0000000000000241 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 00007f0fe396e1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffef86154ef R14: 00007f0fe396e300 R15: 0000000000022000 ==================================================================