From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 43B9F3B8BA8 for ; Tue, 3 Feb 2026 14:56:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.70 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770130568; cv=none; b=a9vbQj2b19cZpekPIs+RAEEAeQpWWpzFCpL4hL4Urltg/M1fAKI26FMVScfOwjf37dsAV2cd/uBr2NiiU81ncvinwFUc62yKJHpPidfBVyHolj1qxRL+m/vcrJnMOpvnsCjWAQasRqyT/7OuLGuWq+qpLuZmsbroAjDehDM/k4I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770130568; c=relaxed/simple; bh=y0+Xl1UgbpdcNDecXvMgF7G+Ak7Mj+5dNFx4sgo/A2c=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=Tld1nIQ2iK9MusjcuQ+oRpP8rO/RhidGvG7xjwviRm/npUFrmfscavejhlPldC+kctiNA6x9K0UpIOCY4FmH68861hWyMRReU54E8quJ6zw81uROX7y99eXce5akGHeU9nKgsxNJpkgDXD7W8weJpBaiux/xswfWn+lf56bsajM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.161.70 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-oo1-f70.google.com with SMTP id 006d021491bc7-66485ced3aaso15113185eaf.1 for ; Tue, 03 Feb 2026 06:56:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770130562; x=1770735362; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=jilwiJo+GsgKC1p/djYW9t7rtNKHnNfXuvKGjs7xB+8=; b=lWKLTYxJLTCZA2zM+DOqvOFlfVrzgPZxuMWrreTX0QoE+zNCjRktMgOL+k2z8Auh3F sjagUzkU4H4G80qpYVbnYIkTI3u0a81TctYHfs3cQzUNtCe60rwrKtXU42MyRTtfvEfb JnSMqJb95+wasYO+alqE+RyOI0efB8umYqyouvdPABlfrfbpwFRSY8BUk5ucpr7YRCaH 0NMy9LQZbH6tNfTo+KlTnSOBONMLnzGND9xfTKMv2av+Con+zjaQ9Rab5e7kfORsiRl7 6SpFU+cmpjsW6pdUso1nK4WylSEQtlC55EwlSeDH2QGWRiz5KVZG4/BOBbTxrXWHKci/ fbqw== X-Forwarded-Encrypted: i=1; AJvYcCUYKKhTFReT6PU2gT/Xq+eSOK3STUmuvKH/jd5W1Bwrh8yve18DbgIBjc5xX05nduLGLlo7E4w4m6zRC48=@vger.kernel.org X-Gm-Message-State: AOJu0YxBE8iHcdNrJyrdMrdffKzhjRsU1Rr/VzWkY6x804GFMQ0DKDZb 3PlPL3mAS80HkB9Je33eay4OXkfGroLnZoPoYKEK1q6wNgCFqwliYVS5qAoFC/AMHuymjKRhrmP eoh0/NZObLlJgkAO9UdjmGPaBQAw9r700DNf68RbqTTa3UHiR2+9TQNB90lI= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4dcb:b0:662:c105:f781 with SMTP id 006d021491bc7-6630f0043a1mr6676128eaf.13.1770130562564; Tue, 03 Feb 2026 06:56:02 -0800 (PST) Date: Tue, 03 Feb 2026 06:56:02 -0800 In-Reply-To: <20260203143011.378005-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69820c82.a00a0220.37c87e.0013.GAE@google.com> Subject: Re: [syzbot] [ext4?] kernel BUG in ext4_write_inline_data (4) From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: kernel BUG in ext4_write_inline_data ------------[ cut here ]------------ kernel BUG at fs/ext4/inline.c:240! Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI CPU: 1 UID: 0 PID: 7754 Comm: syz.0.172 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:ext4_write_inline_data+0x40b/0x4f0 fs/ext4/inline.c:240 Code: fe e8 69 6f 3f ff 42 8d 44 23 c4 bb 3c 00 00 00 89 44 24 08 44 29 e3 e9 aa fe ff ff e8 4e 6f 3f ff 90 0f 0b e8 46 6f 3f ff 90 <0f> 0b e8 3e 6f 3f ff 48 8d 3d f7 56 f6 0d 48 c7 c2 60 5b ac 8b 4c RSP: 0018:ffffc9000c0574e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000001000 RCX: ffffffff82c7691b RDX: ffff888026555b80 RSI: ffffffff82c76b3a RDI: ffff888026555b80 RBP: ffff888077368298 R08: 0000000000000006 R09: 0000000000002000 R10: 000000000000003c R11: 0000000000000000 R12: 0000000000001000 R13: 0000000000002000 R14: ffffc9000c057580 R15: ffff888077368802 FS: 00007f86e72546c0(0000) GS:ffff8881246dc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86e7211ff8 CR3: 000000007e6cf000 CR4: 0000000000350ef0 Call Trace: ext4_write_inline_data_end+0x2a8/0xdb0 fs/ext4/inline.c:817 ext4_da_write_end+0x4f7/0xf20 fs/ext4/inode.c:3286 generic_perform_write+0x513/0xa40 mm/filemap.c:4335 ext4_buffered_write_iter+0x119/0x440 fs/ext4/file.c:299 ext4_file_write_iter+0xa3d/0x1d90 fs/ext4/file.c:723 iter_file_splice_write+0x82b/0x10a0 fs/splice.c:738 do_splice_from fs/splice.c:938 [inline] direct_splice_actor+0x192/0x6c0 fs/splice.c:1161 splice_direct_to_actor+0x345/0xa30 fs/splice.c:1105 do_splice_direct_actor fs/splice.c:1204 [inline] do_splice_direct+0x174/0x240 fs/splice.c:1230 do_sendfile+0xadc/0xe20 fs/read_write.c:1370 __do_sys_sendfile64 fs/read_write.c:1431 [inline] __se_sys_sendfile64 fs/read_write.c:1417 [inline] __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1417 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f86e639aeb9 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:00007f86e7254028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f86e6615fa0 RCX: 00007f86e639aeb9 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f86e6408c1f R08: 0000000000000000 R09: 0000000000000000 R10: 000000000e3aa6ea R11: 0000000000000246 R12: 0000000000000000 R13: 00007f86e6616038 R14: 00007f86e6615fa0 R15: 00007ffcedbd78f8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_write_inline_data+0x40b/0x4f0 fs/ext4/inline.c:240 Code: fe e8 69 6f 3f ff 42 8d 44 23 c4 bb 3c 00 00 00 89 44 24 08 44 29 e3 e9 aa fe ff ff e8 4e 6f 3f ff 90 0f 0b e8 46 6f 3f ff 90 <0f> 0b e8 3e 6f 3f ff 48 8d 3d f7 56 f6 0d 48 c7 c2 60 5b ac 8b 4c RSP: 0018:ffffc9000c0574e0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000001000 RCX: ffffffff82c7691b RDX: ffff888026555b80 RSI: ffffffff82c76b3a RDI: ffff888026555b80 RBP: ffff888077368298 R08: 0000000000000006 R09: 0000000000002000 R10: 000000000000003c R11: 0000000000000000 R12: 0000000000001000 R13: 0000000000002000 R14: ffffc9000c057580 R15: ffff888077368802 FS: 00007f86e72546c0(0000) GS:ffff8881246dc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffeb1036e30 CR3: 000000007e6cf000 CR4: 0000000000350ef0 Tested on: commit: 6bd9ed02 Merge tag 'cgroup-for-6.19-rc8-fixes' of git:.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=162d7322580000 kernel config: https://syzkaller.appspot.com/x/.config?x=fea461e951c03b1b dashboard link: https://syzkaller.appspot.com/bug?extid=7de5fe447862fc37576f compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=1528c402580000