RDX: 0000000000000000 RSI: 0000000020000600 RDI: 00000000200005c0
RBP: 00007f85992081d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffdefdb694f R14: 00007f8599208300 R15: 0000000000022000
==================================================================
BUG: KASAN: null-ptr-deref in memset include/linux/string.h:362 [inline]
BUG: KASAN: null-ptr-deref in udf_write_fi+0x377/0xf40 fs/udf/namei.c:91
Write of size 18446744073709551572 at addr 0000000000000020 by task syz-executor.1/30476

CPU: 1 PID: 30476 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 kasan_report_error.cold+0x15b/0x1b9 mm/kasan/report.c:352
 kasan_report+0x8f/0xa0 mm/kasan/report.c:412
 memset+0x20/0x40 mm/kasan/kasan.c:285
 memset include/linux/string.h:362 [inline]
 udf_write_fi+0x377/0xf40 fs/udf/namei.c:91
 udf_rename+0xdb4/0x1270 fs/udf/namei.c:1185
 vfs_rename+0x67e/0x1bc0 fs/namei.c:4479
 do_renameat2+0xb59/0xc70 fs/namei.c:4629
 __do_sys_rename fs/namei.c:4675 [inline]
 __se_sys_rename fs/namei.c:4673 [inline]
 __x64_sys_rename+0x5d/0x80 fs/namei.c:4673
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f859a8955a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8599208168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f859a9b5f80 RCX: 00007f859a8955a9
RDX: 0000000000000000 RSI: 0000000020000600 RDI: 00000000200005c0
RBP: 00007f85992081d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffdefdb694f R14: 00007f8599208300 R15: 0000000000022000
==================================================================