From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (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 4243A136658 for ; Sun, 28 Sep 2025 19:53:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759089184; cv=none; b=bWBCtWYHFQy4pIWkgeZABCPeD0jvxARjjh7doLwQs3QPdsuoNkW34HJWDeCLPdS2au9oSLmxBCwz3tDBYyTLhoDYGPWyan+mh8YBw8vZHCAvREIGfgRioZuGvnv683SaBD97N4CHjGyveUdCY9KTh4M5dzFOuLIAhpCNlbkuPV4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759089184; c=relaxed/simple; bh=b4aaSJlEl22GsrLSp01f5nQ/8CuThvfO52kH/2bPYsE=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=KIoTc4tbiwX8F1mVmk2BDsRHNdVZFU1N/dNR+rt5Jx3hAeCGsTW8dIVTu3TkOJiSu8WpiVoroo/kcIFN8E+tbSdIBNctgz0NIc/KXoCBzUhD7Q08m9+LOc0sdZsTXVOkbCTKpvh+/oP3begCKuJrJojNlhA1GGeoiuKcY8x881o= 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=209.85.166.72 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-io1-f72.google.com with SMTP id ca18e2360f4ac-90efeb58159so334528939f.0 for ; Sun, 28 Sep 2025 12:53:03 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759089182; x=1759693982; h=content-transfer-encoding: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=ZyoGIzHdKaUzvzWENV+p7lW7UvFpLA5gupvEs4gtlXc=; b=ajs1ygG94K3PBwelhm9Um5+JAQMiwm2tGgC8ybamifgxLHelVAmru2S1z7mIOMqmcM GZlqqS3VWWl+ReO9JXYW4nK8KuITaXf1M4JPiNpMrlXeQ34YQJEupnSQV0iviO4U7+I6 owcl8Kn+A0GnjL6gcxwGND7dFODKDlJJU98AaO9h3tXbi/cZLNy+hAGjy7ZsK4tQgqlP Xgk3oI3f83UjmKnn0tzfYaMxyVR6qTaGax0kaW9cl8XsZIUjKbiUh4To/nB1fktHxGRj BKH9F+EvBH7F8DDfnI8RSrwC5AyqXQC8PbgRfg79CG5PDdYrUY3CRkhVuV3iOvKSVi6+ VFiw== X-Gm-Message-State: AOJu0YwYNSYNKHEFv0AJM8kRm9YPbFXzShfyoPE/+o0a6JaEorRng75e XaB+gVPBLNZtUP4VOREGsXluf33v1A9ERlRVJ/viFcxWau2csn+lpf71N4Fk/tJYgFowTy0rSLO jLlc3tuVeP+sB4fzJzTHO0ciaO3enJoXx0tZ9h738uZzl9GBuBG7YNLfnMzg= X-Google-Smtp-Source: AGHT+IFRZThteLiAhDHS9EbyI21xF2GqUL6p2B2cewHkSiVtIIuL9N80Lp3tvskGp+VSNLf7sfvieJV89YQm73V6FKgB4tG412lb Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1aae:b0:424:7ef5:aeb with SMTP id e9e14a558f8ab-4259563befbmr194484535ab.17.1759089182478; Sun, 28 Sep 2025 12:53:02 -0700 (PDT) Date: Sun, 28 Sep 2025 12:53:02 -0700 In-Reply-To: <87ecrq2xr2.fsf@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68d9921e.a70a0220.10c4b.0025.GAE@google.com> Subject: Re: [syzbot] [fs?] UBSAN: shift-out-of-bounds in befs_check_sb From: syzbot To: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, xandfury@gmail.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello, syzbot tried to test the proposed patch but the build/boot failed: ./include/linux/thread_info.h:244:4: error: call to '__bad_copy_from' decla= red with 'error' attribute: copy source size is too small drivers/nvme/target/fc.c:150:2: warning: 'counted_by' should not be applied= to an array with element of unknown size because 'struct nvmet_fc_fcp_iod'= is a struct type with a flexible array member. This will be an error in a = future compiler version [-Wbounds-safety-counted-by-elt-type-unknown-size] Tested on: commit: 6f861765 fs: Block writes to mounted block devices git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linu= x.git kernel config: https://syzkaller.appspot.com/x/.config?x=3Df5b21423ca3f0a9= 6 dashboard link: https://syzkaller.appspot.com/bug?extid=3Dfc26c366038b54261= e53 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-= 1~exp1~20250708183702.136), Debian LLD 20.1.8 Note: no patches were applied.