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AKwUvBx1NRl4De3gbfbpVHadef3XmKDzgWL56Hx/xRQnN4VLds45gFgc4he/zUipBe70H9i9DI1PopCX8jAnLj4=@vger.kernel.org X-Gm-Message-State: AFq9FYKyPrc6HhhzvR2VEi2XqflkEP/txWVP1oNEVZ8N9gIIiai6dR9R Z1hWDYDNw1h124caZ/wH1gZk4XwCIwtNsWjk381O4iI7lHLi9M3SYRXkdd+rRwcyeH1a8kinuXq 5R1uCIqtJHGuUjD1EKSvraf/4HMlRLduGCRwVZFpDyIy7Nj7P0J2d8eoq7x8= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:1489:b0:4fb:ac9b:b076 with SMTP id 5614622812f47-53cd39dc078mr2257398b6e.67.1792241479500; Sat, 17 Oct 2026 05:51:19 -0700 (PDT) Date: Sat, 17 Oct 2026 05:51:19 -0700 In-Reply-To: <6ad16e43.7514cce4.1ece07.010d.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ad36f47.7952420f.283480.0362.GAE@google.com> Subject: Re: [syzbot] [fs?] WARNING in V1_minix_truncate (2) From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 58161ead29e5 Merge tag 'drm-fixes-2026-10-17' of https://g.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=10aa0f01580000 kernel config: https://syzkaller.appspot.com/x/.config?x=4ccb65e03706547e dashboard link: https://syzkaller.appspot.com/bug?extid=e353ad4408c4f9fac965 compiler: Debian clang version 22.1.8 (1~deb13u4), Debian LLD 22.1.8 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16da320d580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e353ad4408c4f9fac965@syzkaller.appspotmail.com IO error syncing minix inode [loop0:00000008] ------------[ cut here ]------------ !buffer_uptodate(bh) WARNING: fs/buffer.c:991 at mark_buffer_dirty+0x299/0x410 fs/buffer.c:991, CPU#0: syz.0.603/7129 Modules linked in: CPU: 0 UID: 0 PID: 7129 Comm: syz.0.603 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:mark_buffer_dirty+0x299/0x410 fs/buffer.c:991 Code: 4c 89 f7 e8 99 d3 d7 ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 34 44 fb ff e8 4f 57 65 ff eb 8c e8 48 57 65 ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 3a 57 65 ff 90 0f 0b 90 e9 cf fd ff ff RSP: 0018:ffffc90001c3f9f0 EFLAGS: 00010293 RAX: ffffffff8262cae8 RBX: ffff8880452da7e0 RCX: ffff888034fc0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 RBP: ffffc90001c3fb01 R08: ffff8880452da7e7 R09: 1ffff11008a5b4fc R10: dffffc0000000000 R11: ffffed1008a5b4fd R12: ffff88800bf88566 R13: ffff88800bf885f0 R14: ffff88800bf88558 R15: 0000000000000017 FS: 00007f2982d386c0(0000) GS:ffff88808b0b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2981deb8c0 CR3: 000000004669a000 CR4: 0000000000352ef0 Call Trace: free_data fs/minix/itree_common.c:272 [inline] truncate fs/minix/itree_common.c:321 [inline] V1_minix_truncate+0x310/0x10c0 fs/minix/itree_v1.c:61 minix_truncate fs/minix/inode.c:750 [inline] minix_evict_inode+0x1c9/0x260 fs/minix/inode.c:52 evict+0x624/0xb50 fs/inode.c:822 minix_mkdir+0xdc/0x120 fs/minix/namei.c:136 vfs_mkdir+0x40c/0x620 fs/namei.c:5409 filename_mkdirat+0x285/0x510 fs/namei.c:5442 __do_sys_mkdirat fs/namei.c:5463 [inline] __se_sys_mkdirat+0x35/0x150 fs/namei.c:5460 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2981d9e1d9 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:00007f2982d38028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f2982025fa0 RCX: 00007f2981d9e1d9 RDX: 00000000000001c0 RSI: 0000200000000700 RDI: ffffffffffffff9c RBP: 00007f2981e35888 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2982026038 R14: 00007f2982025fa0 R15: 00007ffda9cc0648 --- 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.