[OpenWrt-Devel] Fwd: Fixed bug

[Voina Alex]

Dear OpenWRT/LEDE buddy,

I have found a bug in the Chaos Calmer (15.05.1 , 448532) release that has
been fixed since the lede-17.01.3 release for x86 targets. The bug is
related to ubusd or libubox but I'm not really sure which one it is. It is
a file descriptor leak rooted in the logread ubus method. Every call to
logread whether is logread -f, logread, logread -l 1 or ubus call log read
'{ }' opens a file of the following format which is not closed anymore.

ubusd   2918 root   41r   CHR                1,3      0t0    3934 /dev/null
ubusd   2918 root   42r   CHR                1,3      0t0    3934 /dev/null
ubusd   2918 root   43r   CHR                1,3      0t0    3934 /dev/null
ubusd   2918 root   44r   CHR                1,3      0t0    3934 /dev/null
ubusd   2918 root   45r   CHR                1,3      0t0    3934 /dev/null
ubusd   2918 root   46r   CHR                1,3      0t0    3934 /dev/null
ubusd   2918 root   47r   CHR                1,3      0t0    3934 /dev/null

I saw this issue is mitigated in lede-17.01.3 but I don't know where
exactly along the releases it happened. Can you point me to the
patch/commit that fixes this ?

Best,
Alex Voina
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