loop4: detected capacity change from 0 to 9607 UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/09/12 12:00 (1000) ================================================================== BUG: KASAN: null-ptr-deref in udf_write_fi+0x53e/0xc30 Write of size 18446744073709551572 at addr 0000000000000020 by task syz-executor.4/7498 CPU: 0 PID: 7498 Comm: syz-executor.4 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106 print_report+0xf1/0x1f0 mm/kasan/report.c:436 kasan_report+0xc3/0xf0 mm/kasan/report.c:495 kasan_check_range+0x2a7/0x2e0 mm/kasan/generic.c:189 memset+0x1f/0x40 mm/kasan/shadow.c:44 udf_write_fi+0x53e/0xc30 udf_delete_entry fs/udf/namei.c:577 [inline] udf_rename+0x90c/0x15f0 fs/udf/namei.c:1173 vfs_rename+0xd53/0x1130 fs/namei.c:4756 do_renameat2+0xb53/0x1370 fs/namei.c:4907 __do_sys_rename fs/namei.c:4953 [inline] __se_sys_rename fs/namei.c:4951 [inline] __x64_sys_rename+0x82/0x90 fs/namei.c:4951 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: 0033:0x7f376728b5a9 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:00007f37661fe168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007f37673abf80 RCX: 00007f376728b5a9 RDX: 0000000000000000 RSI: 0000000020000680 RDI: 0000000020000640 RBP: 00007f37661fe1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff38f5a71f R14: 00007f37661fe300 R15: 0000000000022000 ==================================================================