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7b9e031355
There are issues with a change made to RTLD_NEXT behaviour in glibc 2.24 and that change was also backported to older glibc versions in some distros like Fedora 23. This adds a workaround whilst the pseudo maintainer fixes various issues properly. (From OE-Core rev: 21c38a091c4a1917f62a942c4751b0fd11dce340) (From OE-Core rev: 47f5c2a52f93e1984b0269c708ca5218b9fd41ec) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org> Signed-off-by: Armin Kuster <akuster808@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
86 lines
3.6 KiB
Diff
86 lines
3.6 KiB
Diff
We started seeing:
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No real function for mknod: /home/paul/poky_sdk/tmp/sysroots/x86_64-
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linux/usr/bin/../lib/pseudo/lib64/libpseudo.so: undefined symbol: mknod
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No real function for mknodat: /home/paul/poky_sdk/tmp/sysroots/x86_64-
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linux/usr/bin/../lib/pseudo/lib64/libpseudo.so: undefined symbol: mknodat
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In glibc 2.24 they've merged:
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https://sourceware.org/git/?p=glibc.git;a=commit;h=7d45c163d00c88d5875a112343c4ea3e61349e6b
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related to bugzilla entry:
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https://sourceware.org/bugzilla/show_bug.cgi?id=19509
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which means that the behaviour of RTLD_NEXT is slightly different.
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As far as I can tell, mknod has not been present in glibc for a while.
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To quote stat.h:
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/* To allow the `struct stat' structure and the file type `mode_t'
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bits to vary without changing shared library major version number,
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the `stat' family of functions and `mknod' are in fact inline
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wrappers around calls to `xstat', `fxstat', `lxstat', and `xmknod',
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which all take a leading version-number argument designating the
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data structure and bits used. <bits/stat.h> defines _STAT_VER with
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the version number corresponding to `struct stat' as defined in
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that file; and _MKNOD_VER with the version number corresponding to
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the S_IF* macros defined therein. It is arranged that when not
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inlined these function are always statically linked; that way a
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dynamically-linked executable always encodes the version number
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corresponding to the data structures it uses, so the `x' functions
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in the shared library can adapt without needing to recompile all
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callers. */
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so I suspect mknod has not existed for a while, if ever and what we
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were finding, who knows. Everying in the system links against _xmknod
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which we have a separate wrapper for.
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Anyhow, ignoring that problem which hasn't caused a issue in the past,
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the RTLD_NEXT change causes messages to be printed to stdout which causes
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carnage if for example the packaging code is expecting a list of packages:
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WARNING: core-image-minimal-1.0-r0 do_rootfs: No not found in the base feeds (qemux86_64 core2-64 x86_64 noarch any all).
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WARNING: core-image-minimal-1.0-r0 do_rootfs: real not found in the base feeds (qemux86_64 core2-64 x86_64 noarch any all).
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WARNING: core-image-minimal-1.0-r0 do_rootfs: function not found in the base feeds (qemux86_64 core2-64 x86_64 noarch any all).
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WARNING: core-image-minimal-1.0-r0 do_rootfs: for not found in the base feeds (qemux86_64 core2-64 x86_64 noarch any all).
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WARNING: core-image-minimal-1.0-r0 do_rootfs: mknod: not found in the base feeds (qemux86_64 core2-64 x86_64 noarch any all).
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[etc]
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This bug will affect:
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* any distro using glibc 2.24
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* any system using a uninative tarball for glibc 2.24
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* any system which took a backport for the fix which was merged into
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the 2.23 branch for a while before it was reverted (Fedora 23 had this)
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The easiest thing to do is to ignore the problem and disable the diag
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message which masks the problem with no ill effects.
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As Peter notes, there are a few issues here:
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* the fact there is no mknod symbol
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* the fact an error here isn't fatal
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* the #ifdef/#else looks suspect
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* handle RTLD_NEXT chaining properly (need more libs?)
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which he'll work on upstream and hopefully have fixed in a new version.
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Upstream-Status: Submitted [Peter is aware of the issue]
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RP 2016/5/18
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Index: pseudo-1.7.5/pseudo_wrappers.c
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===================================================================
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--- pseudo-1.7.5.orig/pseudo_wrappers.c
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+++ pseudo-1.7.5/pseudo_wrappers.c
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@@ -146,9 +146,9 @@ pseudo_init_one_wrapper(pseudo_function
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return;
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}
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#else
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- if (e != NULL) {
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+ /*if (e != NULL) {
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pseudo_diag("No real function for %s: %s\n", func->name, e);
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- }
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+ }*/
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#endif
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}
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}
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