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AFNElJ+ysYV0WjZFsEexWBUMFpKMvFN9ZnqyLZYpwTdk5AYABEU/SRvF6c2LmCRfMlAP7xy5b2wcSptTu5agzgs=@vger.kernel.org X-Gm-Message-State: AOJu0YzdPqUIDaamjrA1KtMqS0U6zZVyeFu5v3Qi/sQZAK2otCNRDLXy AIh76cL8a2l4bmzRrSW8VoH5alt97cmizDBrW88bfXvC+TDmKuk7Os7ksC2RMIhTYco4mfsLUPz L4UvxsWyYC2lv5L4/qJy67DW7MF2kQaTMchKGtromOtSVF9OST2A2UheYrR4= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:290e:b0:68e:314a:aefa with SMTP id 006d021491bc7-68e314abe27mr4743672eaf.28.1776117036870; Mon, 13 Apr 2026 14:50:36 -0700 (PDT) Date: Mon, 13 Apr 2026 14:50:36 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69dd652c.a00a0220.475f0.002d.GAE@google.com> Subject: [syzbot] [hfs?] general protection fault in hfsplus_cat_write_inode From: syzbot To: frank.li@vivo.com, glaubitz@physik.fu-berlin.de, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, slava@dubeyko.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 26ff969926a0 Merge tag 'rust-7.1' of git://git.kernel.org/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=123510ce580000 kernel config: https://syzkaller.appspot.com/x/.config?x=bcb138057684c76a dashboard link: https://syzkaller.appspot.com/bug?extid=c0ba772a362e70937dfb compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=163510ce580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=112bdb02580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/8710bc1acc42/disk-26ff9699.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f03e7f936c8a/vmlinux-26ff9699.xz kernel image: https://storage.googleapis.com/syzbot-assets/ba58fa2f951e/bzImage-26ff9699.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/08271f11c795/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+c0ba772a362e70937dfb@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 1024 hfsplus: xattr search failed Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 0 UID: 0 PID: 6072 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:hfsplus_cat_write_inode+0xbe/0x8f0 fs/hfsplus/inode.c:637 Code: f3 f3 4a 89 44 33 51 4a 89 44 33 59 66 42 c7 44 33 61 f3 f3 42 c6 44 33 63 f3 e8 2d 77 23 ff 4d 8d 7d 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 73 9b 89 ff 41 be 98 07 00 00 4d RSP: 0018:ffffc900040f7880 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff9200081ef14 RCX: ffff888028725b80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900040f7c10 R08: 0000000000000004 R09: 0000000000000004 R10: fffff5200081ef24 R11: fffffbfff1ed4f17 R12: 1ffff9200081ef8c R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000028 FS: 0000555586e4a500(0000) GS:ffff888126332000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f427032f000 CR3: 0000000036c06000 CR4: 00000000003526f0 Call Trace: hfsplus_unlink+0x57a/0x930 fs/hfsplus/dir.c:435 vfs_unlink+0x272/0x6d0 fs/namei.c:5476 filename_unlinkat+0x3d3/0x610 fs/namei.c:5546 __do_sys_unlink fs/namei.c:5581 [inline] __se_sys_unlink+0x2e/0x140 fs/namei.c:5578 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f464eabc819 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd69795788 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f464ed35fa0 RCX: 00007f464eabc819 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000200 RBP: 00007f464eb52c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f464ed35fac R14: 00007f464ed35fa0 R15: 00007f464ed35fa0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfsplus_cat_write_inode+0xbe/0x8f0 fs/hfsplus/inode.c:637 Code: f3 f3 4a 89 44 33 51 4a 89 44 33 59 66 42 c7 44 33 61 f3 f3 42 c6 44 33 63 f3 e8 2d 77 23 ff 4d 8d 7d 28 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 73 9b 89 ff 41 be 98 07 00 00 4d RSP: 0018:ffffc900040f7880 EFLAGS: 00010206 RAX: 0000000000000005 RBX: 1ffff9200081ef14 RCX: ffff888028725b80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900040f7c10 R08: 0000000000000004 R09: 0000000000000004 R10: fffff5200081ef24 R11: fffffbfff1ed4f17 R12: 1ffff9200081ef8c R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000028 FS: 0000555586e4a500(0000) GS:ffff888126332000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f427032f000 CR3: 0000000036c06000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: f3 f3 4a 89 44 33 51 repz xrelease mov %rax,0x51(%rbx,%r14,1) 7: 4a 89 44 33 59 mov %rax,0x59(%rbx,%r14,1) c: 66 42 c7 44 33 61 f3 movw $0xf3f3,0x61(%rbx,%r14,1) 13: f3 14: 42 c6 44 33 63 f3 movb $0xf3,0x63(%rbx,%r14,1) 1a: e8 2d 77 23 ff call 0xff23774c 1f: 4d 8d 7d 28 lea 0x28(%r13),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 73 9b 89 ff call 0xff899bac 39: 41 be 98 07 00 00 mov $0x798,%r14d 3f: 4d rex.WRB --- 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@googlegroups.com. 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