Gentoo Archives: gentoo-user

From: Nuno Silva <nunojsilva@×××××××.pt>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Re: realloc() failure in motion
Date: Tue, 20 Sep 2022 16:40:40
Message-Id: tgcqdp$14jp$1@ciao.gmane.io
In Reply to: [gentoo-user] realloc() failure in motion by William Kenworthy
1 On 2022-09-18, William Kenworthy wrote:
2
3 > Hi, I am setting up some  cameras (esp32cam) and intended to use
4 > motion for them but it crashes on startup with a realloc() error. The
5 > system is an up to date arm64 (odroid N2+), mostly stable. Has anyone
6 > seen this before?
7 >
8 > BillK
9 >
10 >
11 > ha /etc/motion # /usr/bin/motion -c /etc/motion/motion.conf -k 9 -d 9
12 > [0:motion] [NTC] [ALL] conf_load: Processing thread 0 - config file
13 > /etc/motion/motion.conf
14 > [0:motion] [NTC] [ALL] config_camera: Processing camera config file
15 > /etc/motion/camera0.conf
16 > [0:motion] [NTC] [ALL] read_camera_dir: Processing config file
17 > /etc/motion/motion.conf
18 > [0:motion] [NTC] [ALL] config_camera: Processing camera config file
19 > /etc/motion/motion.conf
20 > realloc(): invalid old size
21 > Aborted
22
23 Could you try to get a stack trace from that?
24
25
26 I've never used "motion" and I don't know its source code, but [1] makes
27 me wonder if the failure could be happening in [2].
28
29 OTOH, from the output, "motion" has entered config_camera() and gone
30 beyond [2] a second time before the realloc() abort - but could these
31 two calls have received the same cnt?
32
33 From my very little understanding of the code and from your output, it
34 looks like "motion" might be processing motion.conf twice (the
35 "Processing thread 0 [...]" line precedes a call to conf_process(), as
36 does "Processing camera config file"). Is this intended?
37
38 [1] https://github.com/Motion-Project/motion/blob/HEAD/src/conf.c#L3204
39 [2] https://github.com/Motion-Project/motion/blob/HEAD/src/conf.c#L3180
40
41 (Links are to HEAD, as that's what I started reading.)
42
43 --
44 Nuno Silva

Replies

Subject Author
Re: [gentoo-user] Re: realloc() failure in motion William Kenworthy <billk@×××××××××.au>