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From: Thomas Petazzoni via buildroot <buildroot@buildroot.org>
To: TIAN Yuanhao <tianyuanhao3@163.com>
Cc: buildroot@buildroot.org, Bernd Kuhls <bernd.kuhls@t-online.de>
Subject: Re: [Buildroot] [PATCH 1/1] package/ntp: add a patch to fix crashes
Date: Tue, 29 Oct 2024 22:52:11 +0100	[thread overview]
Message-ID: <20241029225211.2e908cfe@windsurf> (raw)
In-Reply-To: <20240904114903.4020-1-tianyuanhao3@163.com>

On Wed,  4 Sep 2024 04:49:03 -0700
TIAN Yuanhao <tianyuanhao3@163.com> wrote:

> This patch fixes a regression [1] introduced in ntpd 4.2.8p18 [2].
> 
>   ntpd[200]: Listen normally on 3 lo [::1]:123
>   ntpd[200]: bind(20) AF_INET6 [fe80::bf3d:254d:dee0:d345%3]:123 flags 0x811 failed: Cannot assign requested address
>   ntpd[200]: unable to create socket on enp0s3 (4) for [fe80::bf3d:254d:dee0:d345%3]:123
>   ntpd[192]: daemon control: got EOF
>   ntpd[192]: daemon child died with signal 11
>   systemd[1]: ntpd.service: Control process exited, code=exited, status=70/SOFTWARE
>   systemd[1]: ntpd.service: Failed with result 'exit-code'.
>   systemd[1]: Failed to start Network Time Service.
> 
> If the IPv6 link-local interface was not ready for binding on the first
> attempt, ntpd would segfault in update_interfaces(). The segfault would
> only occur when ntpd was started as part of the boot sequence. Most
> - but not all - boots were affected. Evidently it could happen that the
> timing of ntpd's start up was delayed enough that the IPv6 link-local
> interface was ready for the bind() call when it was first issued by
> open_socket() via create_interface().
> 
> [1]: https://bugs.ntp.org/show_bug.cgi?id=3928
> [2]: https://bugs.ntp.org/show_bug.cgi?id=3913
> 
> Signed-off-by: TIAN Yuanhao <tianyuanhao3@163.com>
> Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
> ---
>  ...-Fix-crash-when-binding-IPv6-address.patch | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
>  create mode 100644 package/ntp/0003-Fix-crash-when-binding-IPv6-address.patch

Applied to master after adding more details in the patch commit
message, especially an Upstream: tag. Thanks!

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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  reply	other threads:[~2024-10-29 21:52 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-04 11:49 [Buildroot] [PATCH 1/1] package/ntp: add a patch to fix crashes TIAN Yuanhao
2024-10-29 21:52 ` Thomas Petazzoni via buildroot [this message]
2024-11-20 20:46   ` Peter Korsgaard

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