Date:   Thu, 12 Oct 2017 09:35:27 -0600
From:   Shuah Khan <shuahkh@....samsung.com>
To:     Xin Long <lucien.xin@...il.com>,
        Andreas Radke <andreas.radke@...lbox.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, patches@...nelci.org,
        ben.hutchings@...ethink.co.uk, stable@...r.kernel.org,
        Shuah Khan <shuahkh@....samsung.com>
Subject: Re: [PATCH 4.9 000/105] 4.9.55-stable review

On 10/12/2017 09:25 AM, Xin Long wrote:
> On Thu, Oct 12, 2017 at 11:18 PM, Andreas Radke
> <andreas.radke@...lbox.org> wrote:
>> Building the 4.9.x kernel package for Arch Linux 4.9.55 gives this IPv4 error here:
>>
>> Job for dhcpd4.service failed because the control process exited with error code.
>> See "systemctl  status dhcpd4.service" and "journalctl  -xe" for details.
>> root@...ver64:/root # systemctl  status dhcpd4.service
>> ● dhcpd4.service - IPv4 DHCP server
>>    Loaded: loaded (/usr/lib/systemd/system/dhcpd4.service; enabled; vendor preset: disabled)
>>    Active: failed (Result: exit-code) since Thu 2017-10-12 17:09:38 CEST; 8s ago
>>   Process: 638 ExecStart=/usr/bin/dhcpd -4 -q -user dhcp -cf /etc/dhcpd.conf -pf /run/dhcpd4.pid (code=exited, status=1/FAILURE)
>>
>> Okt 12 17:09:38 server64 dhcpd[638]: If you think you have received this message due to a bug rather
>> Okt 12 17:09:38 server64 dhcpd[638]: than a configuration issue please read the section on submitting
>> Okt 12 17:09:38 server64 dhcpd[638]: bugs on either our web page at www.isc.org or in the README file
>> Okt 12 17:09:38 server64 dhcpd[638]: before submitting a bug.  These pages explain the proper
>> Okt 12 17:09:38 server64 dhcpd[638]: process and the information we find helpful for debugging.
>> Okt 12 17:09:38 server64 dhcpd[638]:
>> Okt 12 17:09:38 server64 dhcpd[638]: exiting.
>> Okt 12 17:09:38 server64 systemd[1]: dhcpd4.service: Control process exited, code=exited status=1
>> Okt 12 17:09:38 server64 systemd[1]: dhcpd4.service: Failed with result 'exit-code'.
>> Okt 12 17:09:38 server64 systemd[1]: Failed to start IPv4 DHCP server.
>>
>> journalctl -xe
>> Okt 12 17:09:37 server64 systemd[1]: Starting IPv4 DHCP server...
>> -- Subject: Unit dhcpd4.service has begun start-up
>> -- Defined-By: systemd
>> -- Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
>> --
>> -- Unit dhcpd4.service has begun starting up.
>> Okt 12 17:09:38 server64 dhcpd[638]: Internet Systems Consortium DHCP Server 4.3.6
>> Okt 12 17:09:38 server64 dhcpd[638]: Copyright 2004-2017 Internet Systems Consortium.
>> Okt 12 17:09:38 server64 dhcpd[638]: All rights reserved.
>> Okt 12 17:09:38 server64 dhcpd[638]: For info, please visit https://www.isc.org/software/dhcp/
>> Okt 12 17:09:38 server64 dhcpd[638]: Source compiled to use binary-leases
>> Okt 12 17:09:38 server64 dhcpd[638]: Wrote 0 deleted host decls to leases file.
>> Okt 12 17:09:38 server64 dhcpd[638]: Wrote 0 new dynamic host decls to leases file.
>> Okt 12 17:09:38 server64 dhcpd[638]: Wrote 16 leases to leases file.
>> Okt 12 17:09:38 server64 dhcpd[638]: Can't install packet filter program: Cannot allocate memory
>> Okt 12 17:09:38 server64 dhcpd[638]:
>> Okt 12 17:09:38 server64 dhcpd[638]: If you think you have received this message due to a bug rather
>> Okt 12 17:09:38 server64 dhcpd[638]: than a configuration issue please read the section on submitting
>> Okt 12 17:09:38 server64 dhcpd[638]: bugs on either our web page at www.isc.org or in the README file
>> Okt 12 17:09:38 server64 dhcpd[638]: before submitting a bug.  These pages explain the proper
>> Okt 12 17:09:38 server64 dhcpd[638]: process and the information we find helpful for debugging.
>> Okt 12 17:09:38 server64 dhcpd[638]:
>> Okt 12 17:09:38 server64 dhcpd[638]: exiting.
>> Okt 12 17:09:38 server64 systemd[1]: dhcpd4.service: Control process exited, code=exited status=1
>> Okt 12 17:09:38 server64 systemd[1]: dhcpd4.service: Failed with result 'exit-code'.
>> Okt 12 17:09:38 server64 systemd[1]: Failed to start IPv4 DHCP server.
>> -- Subject: Unit dhcpd4.service has failed
> pls try revert:
> commit 02f7e4101092b88e57c73171174976c8a72a3eba

Correction. The commit is:

345c66695569db83eed100723e4df72cb54df7de

I will try the revert and let you know.

strace shows the following - clear ENOMEM

socket(AF_PACKET, SOCK_RAW, 768)        = 5
ioctl(5, SIOCGIFINDEX, {ifr_name="eth0", }) = 0
bind(5, {sa_family=AF_PACKET, proto=0x03, if2, pkttype=PACKET_HOST, addr(0)={0, }, 20) = 0
setsockopt(5, SOL_PACKET, PACKET_AUXDATA, [1], 4) = 0
setsockopt(5, SOL_SOCKET, SO_ATTACH_FILTER, "\v\0\0\0\0\0\0\0`\330\260\330\275U\0\0", 16) = -1 ENOMEM (Cannot allocate memory)
sendto(3, "<27>Oct 12 09:23:46 dhclient[278"..., 95, MSG_NOSIGNAL, NULL, 0) = 95
write(2, "Can't install packet filter prog"..., 59Can't install packet filter program: Cannot allocate memory) = 59
write(2, "\n", 1
)                       = 1

thanks,
-- Shuah

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