From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oo1-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) (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 6BD3E38CFE7 for ; Tue, 31 Mar 2026 19:04:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774983847; cv=none; b=iIkCzuqfIaG6YIBAXVarwkspxNWM5iQsq99S8oGyUiJBTaHC1VtemwpUBGpiAwGcXJHB+LRwggM5xS9wZNKMUolJFvXU4Q/Pt3XTspK68PYwGZA6TU8lITTWxIlgtM0fMJ+1iak5Prqhc86SHQBDFtMLHOU+se2vkYq9WTtFtuU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774983847; c=relaxed/simple; bh=Q+dwtANmzUYidd/b65vpNMZq7AVtRoaWg+zvLf/nO3s=; h=MIME-Version:Date:Message-ID:Subject:From:To:Cc:Content-Type; b=nyhi4Y/iY707GAzNymhlDAsZ98xG4Tsr067RAgbvxW0oDldicY+j8RdMWaXM+JEMxMAvzMWJfow+RoVmqEWLV7fbPBiovxdkIklxn349FRfET91qDE2EnCrkoaAE954Y3gDfg7VjNQusHKZKZZNvTkG7nsJtrXQvJ0lOGg0dExI= 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=209.85.161.71 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-f71.google.com with SMTP id 006d021491bc7-67df8dd0e26so11074703eaf.1 for ; Tue, 31 Mar 2026 12:04:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774983845; x=1775588645; h=cc:to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=rsablayvlub86QV6RoCjjTRTTEQcBKfEeT4i1au+7qQ=; b=J+abHsxSWbakT2qyhymTHrS5ycF67U90lF4DENeOagRiRkdLWy/LdroGP+sgfrAKAR kYRqSw/ZzdjVL2SzjeVLEFHkv/F3VRi5KKgVnzj4Imc+gK0aTXnSYVhzBmeqtMwmqXaM mDo+Zr1at7Bqh1OXF7p+DNQkVaLh+ei/hRcBKGIbQinejpmADHYuLylyeWXtjCoADchd iEw928e16HRq0aL+aUPeXv0/n3PpnZzREEWbpmoDB/dMOopwGkBYokyT1JPTgvagidNQ pE5KI9Bn2P/SS9Txoa8gv6gkhtsjvA6udA3/NLkNxdxtUI9RsmXdpXDqvDVyUBnjy2kq KKAA== X-Gm-Message-State: AOJu0YybbxpY4oBFhToIUgOZjEsArVD20eqiSzLw1v560ZtuXfttzY+x JFdNTg+JYGdy8F7445e+0GNZTk0TAJUPy900I+atesKKrUPMMZInuHg2Aer6tUaYFx059lilPkl R08T5eKE4f/BTTKPn1RJ1jcdmqhemTuYpIKSCP2GkkIGETATvPimrNzMYSgI= Precedence: bulk X-Mailing-List: syzbot@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:1791:b0:67d:e619:b71a with SMTP id 006d021491bc7-67fabca4183mr255001eaf.39.1774983845428; Tue, 31 Mar 2026 12:04:05 -0700 (PDT) Date: Tue, 31 Mar 2026 12:04:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69cc1aa5.a70a0220.97f31.02a1.GAE@google.com> Subject: [moderation/CI] Re: mm/userfaultfd: detect VMA replacement after copy retry in mfill_copy_folio_retry() From: syzbot ci To: syzkaller-upstream-moderation@googlegroups.com Cc: syzbot@lists.linux.dev Content-Type: text/plain; charset="UTF-8" syzbot ci has tested the following series [v4] mm/userfaultfd: detect VMA replacement after copy retry in mfill_copy_folio_retry() https://lore.kernel.org/all/20260331134158.622084-1-devnexen@gmail.com * [PATCH v4] mm/userfaultfd: detect VMA replacement after copy retry in mfill_copy_folio_retry() and found the following issue: kernel build error Full report is available here: https://ci.syzbot.org/series/48f63483-eb2d-4dd7-831a-e7edcbc81adc *** kernel build error tree: mm-new URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/akpm/mm.git base: 54c9d0359b180b34070aa7ff8d9428fa3db8acbb arch: amd64 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 config: https://ci.syzbot.org/builds/63e576d3-1345-472a-9c6b-4e672cc66ae2/config mm/userfaultfd.c:480:3: error: call to undeclared function 'fput'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com. To test a patch for this bug, please reply with `#syz test` (should be on a separate line). The patch should be attached to the email. Note: arguments like custom git repos and branches are not supported. The email will later be sent to: [akpm@linux-foundation.org devnexen@gmail.com linux-kernel@vger.kernel.org linux-mm@kvack.org peterx@redhat.com rppt@kernel.org] If the report looks fine to you, reply with: #syz upstream If the report is a false positive, reply with #syz invalid