general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 1 PID: 13485 Comm: syz-executor.3 Not tainted 6.2.0-rc1-next-20221226-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:udf_fiiter_write_fi+0x14e/0x9d0 fs/udf/directory.c:402 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 1b 08 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 10 49 8d 7c 24 28 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 07 00 00 49 8b 44 24 28 48 8d 7b 18 48 89 fa RSP: 0018:ffffc9000b327818 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffc9000b327ad0 RCX: ffffc9000cd16000 RDX: 0000000000000005 RSI: ffffffff82df7ad5 RDI: 0000000000000028 RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888082c31af8 R14: ffffc9000b327ad0 R15: ffff888082c30158 FS: 00007ff99c5ae700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020045000 CR3: 0000000078396000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: udf_rename+0x69d/0xb80 fs/udf/namei.c:870 vfs_rename+0x1162/0x1a90 fs/namei.c:4779 do_renameat2+0xb22/0xc30 fs/namei.c:4930 __do_sys_rename fs/namei.c:4976 [inline] __se_sys_rename fs/namei.c:4974 [inline] __x64_sys_rename+0x81/0xa0 fs/namei.c:4974 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: 0033:0x7ff99b88c0c9 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:00007ff99c5ae168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 00007ff99b9ac050 RCX: 00007ff99b88c0c9 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000020000040 RBP: 00007ff99b8e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdfd6d93ef R14: 00007ff99c5ae300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:udf_fiiter_write_fi+0x14e/0x9d0 fs/udf/directory.c:402 Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 1b 08 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 10 49 8d 7c 24 28 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 07 00 00 49 8b 44 24 28 48 8d 7b 18 48 89 fa RSP: 0018:ffffc9000b327818 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffffc9000b327ad0 RCX: ffffc9000cd16000 RDX: 0000000000000005 RSI: ffffffff82df7ad5 RDI: 0000000000000028 RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888082c31af8 R14: ffffc9000b327ad0 R15: ffff888082c30158 FS: 00007ff99c5ae700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3303f000 CR3: 0000000078396000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 fa mov %edi,%edx 2: 48 c1 ea 03 shr $0x3,%rdx 6: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) a: 0f 85 1b 08 00 00 jne 0x82b 10: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 17: fc ff df 1a: 4c 8b 63 10 mov 0x10(%rbx),%r12 1e: 49 8d 7c 24 28 lea 0x28(%r12),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 ed 07 00 00 jne 0x821 34: 49 8b 44 24 28 mov 0x28(%r12),%rax 39: 48 8d 7b 18 lea 0x18(%rbx),%rdi 3d: 48 89 fa mov %rdi,%rdx