Hello, syzbot found the following issue on: HEAD commit: 69b8923f5003 Merge tag 'for-linus-6.14-ofs4' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c2dddf980000 kernel config: https://syzkaller.appspot.com/x/.config?x=57ab43c279fa614d dashboard link: https://syzkaller.appspot.com/bug?extid=c97005be42b5040dfb21 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=15bf4518580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/ea84ac864e92/disk-69b8923f.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6a465997b4e0/vmlinux-69b8923f.xz kernel image: https://storage.googleapis.com/syzbot-assets/d72b67b2bd15/bzImage-69b8923f.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/dc476a9a4569/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c97005be42b5040dfb21@xxxxxxxxxxxxxxxxxxxxxxxxx Oops: general protection fault, probably for non-canonical address 0xfbd5a5d5a0000003: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: maybe wild-memory-access in range [0xdead4ead00000018-0xdead4ead0000001f] CPU: 0 UID: 0 PID: 5866 Comm: udevd Not tainted 6.13.0-syzkaller-09793-g69b8923f5003 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__d_lookup+0x20f/0x7b0 fs/dcache.c:2352 Code: 89 44 24 48 49 8d 45 04 48 89 44 24 20 49 8d 45 08 48 89 44 24 50 4c 89 7c 24 30 48 89 2c 24 48 83 c5 18 48 89 e8 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 37 03 00 00 8b 6d 00 89 ef 44 89 f6 e8 d8 RSP: 0018:ffffc9000406f870 EFLAGS: 00010a06 RAX: 1bd5a9d5a0000003 RBX: dffffc0000000000 RCX: ffff8880319d0000 RDX: 0000000000000000 RSI: 00000000426c562e RDI: 000000009a43dfa0 RBP: dead4ead00000018 R08: ffffffff823bcc58 R09: 1ffff920000826c5 R10: dffffc0000000000 R11: fffff520000826c6 R12: ffffffff823bca94 R13: ffffc9000406fab0 R14: 00000000426c562e R15: ffff888011b42eb0 FS: 00007f8465f7dc80(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005590437eb9a8 CR3: 0000000032560000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> lookup_fast+0x79/0x590 fs/namei.c:1751 walk_component+0x57/0x410 fs/namei.c:2110 lookup_last fs/namei.c:2612 [inline] path_lookupat+0x16f/0x450 fs/namei.c:2636 filename_lookup+0x2a3/0x670 fs/namei.c:2665 vfs_statx+0x103/0x490 fs/stat.c:344 vfs_fstatat+0xe5/0x130 fs/stat.c:366 __do_sys_newfstatat fs/stat.c:530 [inline] __se_sys_newfstatat fs/stat.c:524 [inline] __x64_sys_newfstatat+0x11d/0x1a0 fs/stat.c:524 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8465b165f4 Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8 RSP: 002b:00007ffd3486bbe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106 RAX: ffffffffffffffda RBX: 00005590437a4e50 RCX: 00007f8465b165f4 RDX: 00007ffd3486bbf8 RSI: 00007ffd3486c088 RDI: 00000000ffffff9c RBP: 00007ffd3486bc88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3486c088 R13: 00007ffd3486bbf8 R14: 0000559043794910 R15: 000055903b3dda04 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__d_lookup+0x20f/0x7b0 fs/dcache.c:2352 Code: 89 44 24 48 49 8d 45 04 48 89 44 24 20 49 8d 45 08 48 89 44 24 50 4c 89 7c 24 30 48 89 2c 24 48 83 c5 18 48 89 e8 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 37 03 00 00 8b 6d 00 89 ef 44 89 f6 e8 d8 ---------------- Code disassembly (best guess): 0: 89 44 24 48 mov %eax,0x48(%rsp) 4: 49 8d 45 04 lea 0x4(%r13),%rax 8: 48 89 44 24 20 mov %rax,0x20(%rsp) d: 49 8d 45 08 lea 0x8(%r13),%rax 11: 48 89 44 24 50 mov %rax,0x50(%rsp) 16: 4c 89 7c 24 30 mov %r15,0x30(%rsp) 1b: 48 89 2c 24 mov %rbp,(%rsp) 1f: 48 83 c5 18 add $0x18,%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 37 03 00 00 jne 0x36d 36: 8b 6d 00 mov 0x0(%rbp),%ebp 39: 89 ef mov %ebp,%edi 3b: 44 89 f6 mov %r14d,%esi 3e: e8 .byte 0xe8 3f: d8 .byte 0xd8 --- 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 report is already addressed, 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 overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
