From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out162-62-58-211.mail.qq.com (out162-62-58-211.mail.qq.com [162.62.58.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2900C79DC for ; Sun, 20 Oct 2024 03:35:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=162.62.58.211 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729395318; cv=none; b=SgbYxSsNVAZsT7ntIbnTV5u1/1BNihA9PPYVB0CMG2mteq/q5typavW/z6ccVXh8C/nmYf2c9hUNHKRGJOu68NVIGl1FZeb56pZrd/Sk699pLEtF8wOFod/f1ZW96hUZx5lIC17yWzOpmd7CrStYjNJ0p9CGIHJN+syZxgPRF6c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729395318; c=relaxed/simple; bh=Z0x1981zG3ZYuYYAirYgLS/KH/VFbyZ1v3MqtFfsEOk=; h=Message-ID:From:To:Cc:Subject:Date:In-Reply-To:References: MIME-Version; b=P3m8o2Sf5ySr0EJklb8JqmzCRNIlvBiesV7nhCX6jBUlkv2mZFm09MLzf5q/jQlLcQxK6Mj1G2qifSJ+WSTkvnbfFW0pN2Y2vdwAUtir1JtePF50MF4GufMijBYGTMDJHkL64U5FJyi0/N2o2juF4Otoy2G+khBa4w/6E+rRCw4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com; spf=pass smtp.mailfrom=qq.com; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b=mb4QxhFZ; arc=none smtp.client-ip=162.62.58.211 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=qq.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=qq.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=qq.com header.i=@qq.com header.b="mb4QxhFZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qq.com; s=s201512; t=1729395309; bh=dGtPwrXvsrcoXZ0EWDeowsuRQo1Vv7lhG9R0Qgq6fK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=mb4QxhFZ4GhnD0tvu6+xlPH+orsNJY/kWgkJ15kNxl+jyx6Aa3uQsUD2kUYWkT3HR PGzFdAUgGAvzdPUsZOLKelnEJyxi2Gdl9dgktPfow30BHz7EUfNbKHMH5ikFsmtCxC Bm0sdoNYvEnaIVGt066Y3r1BoaHI3niLeTuZ3hQc= Received: from pek-lxu-l1.wrs.com ([111.198.224.50]) by newxmesmtplogicsvrszb21-0.qq.com (NewEsmtp) with SMTP id 8C810035; Sun, 20 Oct 2024 11:35:08 +0800 X-QQ-mid: xmsmtpt1729395308t6wnjj467 Message-ID: X-QQ-XMAILINFO: NkHKfw09D6j8xDszqrDnNcaTS3gRmz2NWwIBkuf7AjrHRZj5GmqL2KKzkkpVK0 aNSG9tmoqhuooNTpYW/mfruPVAo62PiRmRVCRsbIWTOo4DSTcZbvoUcmw0vOuaBKojBE9Ho4eozw xaMXGXHStxNG+JZUXYqin3MlGcbxB7lxRRFv0vUXPynvPvzgw2PyhMT5I1ogPRFWfrzCTiUB3cHC sHTa2n2fxLr8EDyvUiKd/gmnVwcFGTxdfDm+qw6j+y16Z+fHo4U26UmUhG+DJC3hq8f3BnZeFTgD pvikR1V9xdo/B6LgAnScVuzEb5QjxztDhCfsQKd6UDdNslU7baE2ZGIVSadiFfaTVCi98h87zHPp vTjoc4SZGgjwi8YtRK27MsDSZ2worOpY15RbpA3ka+uy4qwtt+l5LFikUaNNFauqaa5SQhq4xIoI lUlCHe2YcpmQ5CG1UOFMhppMyvHnsqAoHZT6W8seDECplWqADD7uZIAFCl39FC8OfmlS/YXawHkn DSvPGuhhaH+fbNfWm1UfaAXi2NC+73adO0+qKvQVfXJtA5kDIPFGZ+H35ngtgAM/3kMiOfJJv1Fa 5pTj9+v+PcVzDezVjbOPtVlOOxzGAd5QMaq2e4k5J9vM2Z18ilUa4juKKEuGNd0TTicoieEe1BHr ER2CCfiGOqZeUCTTS2ApNWqV5b0t6jm0Z7zfoSj92N5rwARy5j1I8mYSISjJYfaCEEYxv4Ag20bn CFa8pnqBetMvdZneyUxy1MBqwxw+hL6MYzUAC7aF8bgteHpGim0lPBUg0pL3iXa9kIycxlMv74SK 1CkWdi7I3W5r5UVnFmW+O+bOk42TPJ1q1aF1ZApTQXL56+ihTNOr2OHXeWE9lJle0bM1Kkb/TUaQ 1NidKULF04lZl1/WfkW3xkrtfilbEOw7KQvu8FDzBdySLHOWrxf5oxMzGrhJ8XDOfjz233lHz5Sl rrufYa3v8= X-QQ-XMRINFO: NS+P29fieYNw95Bth2bWPxk= From: Edward Adam Davis To: syzbot+4125a3c514e3436a02e6@syzkaller.appspotmail.com Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] [xfs?] KASAN: null-ptr-deref Write in xfs_filestream_select_ag (2) Date: Sun, 20 Oct 2024 11:35:08 +0800 X-OQ-MSGID: <20241020033507.2327353-2-eadavis@qq.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <6712b052.050a0220.10f4f4.001a.GAE@google.com> References: <6712b052.050a0220.10f4f4.001a.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit catch can't pick any perpag #syz test diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c index e3aaa0555597..f4c731fd61ea 100644 --- a/fs/xfs/xfs_filestream.c +++ b/fs/xfs/xfs_filestream.c @@ -159,6 +159,8 @@ xfs_filestream_pick_ag( free = maxfree; atomic_inc(&pag->pagf_fstrms); } + + return -ENOSPC; } else if (max_pag) { xfs_perag_rele(max_pag); }