loop1: detected capacity change from 0 to 2048 ================================================================== BUG: KASAN: null-ptr-deref in udf_write_fi+0x380/0xf60 fs/udf/namei.c:91 Write of size 18446744073709551572 at addr 0000000000000020 by task syz-executor.1/16183 CPU: 1 PID: 16183 Comm: syz-executor.1 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 kasan_report+0xbb/0x1f0 mm/kasan/report.c:495 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 memset+0x20/0x40 mm/kasan/shadow.c:44 udf_write_fi+0x380/0xf60 fs/udf/namei.c:91 udf_rename+0xd9f/0x1250 fs/udf/namei.c:1173 vfs_rename+0x115e/0x1a90 fs/namei.c:4778 do_renameat2+0xb5e/0xc80 fs/namei.c:4929 __do_sys_rename fs/namei.c:4975 [inline] __se_sys_rename fs/namei.c:4973 [inline] __x64_sys_rename+0x7d/0xa0 fs/namei.c:4973 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f36a528b5a9 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:00007f36a45ff168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f36a53abf80 RCX: 00007f36a528b5a9 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000020000100 RBP: 00007f36a45ff1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffc122be1ef R14: 00007f36a45ff300 R15: 0000000000022000 ==================================================================