On 2015-06-15 12:32, Tim Ruehsen wrote: > On Mon, 15 Jun 2015 11:55:47 +0200 Aurelien Jarno <aurelien@aurel32.net> > wrote: > > Nothing has changed in the libc6 package for sometimes. When does the > > breakage started? I see you are using a 4.0 kernel, could it be due to > > that? > > I made some tests on Debian VMs, that I have flying around. > > Debian SID with 4.0 (amd64): problem as described above > Debian SID with 3.16 (amd64): same problem > Debian Wheezy with 3.2.0 (amd64): same problem > Debian Wheezy with 3.2.0 (i386): Works as expected (up to maxmsg=1000, with > maxmsg=1001 I get errno=22 (Invalid argument) - that's fine for me, but is not > what the man page says for this case. Well it looks like it matches the manpage: | O_CREAT was specified in oflag, and attr was not NULL, but | attr->mq_maxmsg or attr->mq_msqsize was invalid. In a process that is | unprivileged (does not have the CAP_SYS_RESOURCE capability), | attr->mq_maxmsg must be less than or equal to the msg_max limit, and | attr->mq_msgsize must be less than or equal to the msgsize_max limit. > BTW the man page for mq_open is broken - > double entries below ERRORS). The manpage is nor provided by the glibc, but by the Linux man-pages project. Please report the bug there. > > Looks like amd64 architecture has the problem since a while. I don't really know what is the problem, but a strace shows that the glibc just returns the errno from the kernel. -- Aurelien Jarno GPG: 4096R/1DDD8C9B aurelien@aurel32.net http://www.aurel32.net
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