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I have got already more signs of a problem into locking access to
functions like to getaddrinfo(), by the macro __libc_lock_lock, which
reproduced in multithreaded environments!
1. For my program, I was needed to create extra locking about the
function getaddrinfo(), but that resolved the problem only for my calls
but for the external libraries like to MySQL, MariaDB I yet have the
crashes and it cannot be fixed at all.
2. rtl8192eu by the driver rtl8xxxu, or the external one 8192eu.ko, does
not connect to any network with that messages into dmesg:
[ 137.936642] wlx000f0064f2d8: authenticate with 00:90:4c:08:00:0d
[ 137.940680] wlx000f0064f2d8: send auth to 00:90:4c:08:00:0d (try 1/3)
[ 138.145146] wlx000f0064f2d8: send auth to 00:90:4c:08:00:0d (try 2/3)
[ 138.353198] wlx000f0064f2d8: send auth to 00:90:4c:08:00:0d (try 3/3)
[ 138.557239] wlx000f0064f2d8: authentication with 00:90:4c:08:00:0d
3. Impossible to connect to any WLan HotSpot (Ad-hoc), for me it is
All those issues fine fork on two Debian 8 installations with the libc6
2.19, where one on the same hardware as Debian 9.
Other Debian 9 installation on the stationary PC also does not work for
the second issue.
Initially I heve counted it is kernel problems but I have installed this
same Linux kernel version on Debian 8 and these all work there.
--- System information. ---
Kernel: Linux 4.9.0-6-amd64
Debian Release: 9.5
500 stable-updates ftp.ua.debian.org
500 stable security.debian.org
500 stable linux.teamviewer.com
500 stable ftp.ua.debian.org
500 preview linux.teamviewer.com
100 stretch-backports ftp.ua.debian.org
--- Package information. ---
Package's Depends field is empty.
Package's Recommends field is empty.
Package's Suggests field is empty.