From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-182.mta1.migadu.com (out-182.mta1.migadu.com [95.215.58.182]) (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 720CD132802 for ; Thu, 28 Mar 2024 18:23:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711650205; cv=none; b=n2iDAHxi/UJOdYcfTOKCY/zDJXaFqSQLsIb2ypZxxZkgRgcCg5hXcxVtC8YaCf92p/kSv/n9nAox1ZjFZC4GQ/NeOamc4QE6ADRmPfOFUzdQBH5/aoE64u/7Z4V/ggLNIvORbXgecdFJdBox3OsdW13yzoi1VfLlizOabWhIFWs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711650205; c=relaxed/simple; bh=rhMs+IW+LjgjgJG2bjuDC2kRA/YBDohWPyTnq4wTmlw=; h=Message-ID:Date:MIME-Version:Subject:To:References:From:Cc: In-Reply-To:Content-Type; b=Mm5zmmW2Zr3mVNKgjXJ7KwPgfyyAW1qXm7Iy6lEtjQqISzBGXs28SfV7rcm1bk0tRd5xU16SC38lvbYrfdGlRI5+TybCdcRr7aYBpCTOxjbOBVpSek4jfKvDbx9fbzxb0t4BMZ+hZ5ZYZwC5DnTnj47nOOsQ9+ZCXoACjsV/1JI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=ARG4bkyD; arc=none smtp.client-ip=95.215.58.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="ARG4bkyD" Message-ID: <16b32b53-5a01-43e8-93db-64778378fa09@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1711650197; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bvccjBgvV8FPnWLETfwa5X6p1gUwr/hfB1axJ8LOH4E=; b=ARG4bkyDA/Vzrk5HPV4L8uXDHlS+KGa6BXgc+OWOCZOzz7yMadsTRX1+yWr1QLiRWQXK4Y 5FJJjHUw4vhZdXTsHFY817EuoGtAsGuiYKpCMm0rH7CZiEEOUgYbNTM2iUAL002W3KPZEb LZaNF09ZJ9DXkVnlxWO0mx+/2tPYIlA= Date: Thu, 28 Mar 2024 11:23:07 -0700 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [syzbot] [bpf?] [net?] KMSAN: uninit-value in dev_map_lookup_elem Content-Language: en-US To: ast@kernel.org, yonghong.song@linux.dev References: <000000000000c8d6b00614b599a2@google.com> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Martin KaFai Lau Cc: daniel@iogearbox.net, davem@davemloft.net, eddyz87@gmail.com, haoluo@google.com, hawk@kernel.org, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, sdf@google.com, song@kernel.org, syzkaller-bugs@googlegroups.com, andrii@kernel.org, alexei.starovoitov@gmail.com, bpf@vger.kernel.org, syzbot In-Reply-To: <000000000000c8d6b00614b599a2@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT On 3/28/24 3:01 AM, syzbot wrote: > Killed > make[2]: *** [scripts/Makefile.vmlinux_o:62: vmlinux.o] Error 137 > make[2]: *** Deleting file 'vmlinux.o' > make[1]: *** [/syzkaller/jobs/linux/kernel/Makefile:1141: vmlinux_o] Error 2 > make: *** [Makefile:240: __sub-make] Error 2 My second syzbot test attempt passed the build stage and passed the reproducer also. https://lore.kernel.org/all/000000000000b7bdd80614bc433f@google.com/ Not sure what caused the syzbot build error in the first attempt but should be unrelated to the fix. I will post the patch.