Hello, syzbot found the following issue on: HEAD commit: 4b954598a47b Merge tag 'exfat-for-6.5-rc5' of git://git.ke.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=17c9ee5ea80000 kernel config: https://syzkaller.appspot.com/x/.config?x=1e3d5175079af5a4 dashboard link: https://syzkaller.appspot.com/bug?extid=60cf892fc31d1f4358fc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11ee0aa6a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=100eaedea80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0032b69f541f/disk-4b954598.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/03d8f0d906d0/vmlinux-4b954598.xz kernel image: https://storage.googleapis.com/syzbot-assets/564663ea69f2/bzImage-4b954598.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/0942a51fa81c/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+60cf892fc31d1f4358fc@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 4096 ntfs3: loop0: Different NTFS sector size (2048) and media sector size (512). BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 7ce85067 P4D 7ce85067 PUD 7de36067 PMD 0 Oops: 0010 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5020 Comm: syz-executor569 Not tainted 6.5.0-rc4-syzkaller-00009-g4b954598a47b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003c1f778 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff88807a700210 RSI: 0000000000000000 RDI: ffff888021486600 RBP: ffffc90003c1f9b0 R08: ffff88807c3dc000 R09: 0000000000000000 R10: ffffc90003c1f820 R11: fffff52000783f24 R12: 0000000000000000 R13: ffff88807a700200 R14: dffffc0000000000 R15: 00000000000000d0 FS: 0000555557244380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000002adce000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> hdr_find_e+0x33e/0x600 fs/ntfs3/index.c:759 indx_find+0x317/0xb60 fs/ntfs3/index.c:1166 dir_search_u+0x1b7/0x3a0 fs/ntfs3/dir.c:254 ntfs_lookup+0x106/0x1f0 fs/ntfs3/namei.c:85 lookup_one_qstr_excl+0x11b/0x250 fs/namei.c:1605 do_renameat2+0x650/0x1660 fs/namei.c:4950 __do_sys_rename fs/namei.c:5055 [inline] __se_sys_rename fs/namei.c:5053 [inline] __x64_sys_rename+0x86/0x90 fs/namei.c:5053 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f20709905f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007ffcfe70b878 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 RAX: ffffffffffffffda RBX: 0031656c69662f2e RCX: 00007f20709905f9 RDX: 00007f207098f8f0 RSI: 00000000200000c0 RDI: 0000000020000040 RBP: 00007f2070a22610 R08: 000000000001f3d5 R09: 0000000000000000 R10: 00007ffcfe70b740 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffcfe70ba48 R14: 0000000000000001 R15: 0000000000000001 </TASK> Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc90003c1f778 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff88807a700210 RSI: 0000000000000000 RDI: ffff888021486600 RBP: ffffc90003c1f9b0 R08: ffff88807c3dc000 R09: 0000000000000000 R10: ffffc90003c1f820 R11: fffff52000783f24 R12: 0000000000000000 R13: ffff88807a700200 R14: dffffc0000000000 R15: 00000000000000d0 FS: 0000555557244380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 000000002adce000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
