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devel@uclibc-ng.org

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1149 discussions

segfault in dlclose() when lots of shared objects are dlopened - the story continues

by Bernd Kuhls

Hi, investigating a segfault (gdb) bt full #0 0x00007fffec28dd90 in __deregister_frame_info () from /lib/ libgcc_s.so.1 No symbol table info available. #1 0x00007fffebf8af66 in __do_global_dtors_aux () from /usr/lib/ libgcrypt.so.20 when starting Apache with mod_php activated on a buildroot-built x86_64- system with uclibc-1.0.19 I came across discussions from 2012 & 2014 on the uClibc mailinglist: 2012: http://lists.uclibc.org/pipermail/uclibc/2012-October/047059.html 2014: http://lists.busybox.net/pipermail/uclibc/2014-December/048737.html Building mod_php without libgcrypt.so, which means disabling BR2_PACKAGE_PHP_EXT_XSL, does not fix the problem, the segfault will occur in another shared lib. Quoting the message from 2014: > In my particular case, this meant dlopening and dlclosing some 47 > shared objects as reported by "LD_DEBUG=1 /usr/bin/gdk-pixbuf-query- > loaders ./libpixbufloader-svg.la 2>&1 | grep ^do_dlopen | grep ctors > | wc -l" My system opens even more shared libs when starting Apache & mod_php: # LD_DEBUG=1 /usr/bin/httpd -t 2>&1 | grep ^do_dlopen | grep ctors | wc -l 64 Segmentation fault Please note that using Apache without mod_php works fine, php-cgi itself also works fine. In 2014 Anthony suggested to revert https://git.busybox.net/uClibc/commit/ldso? h=0.9.33&id=9b42da7d0558884e2a3cc9a8674ccfc752369610 which still solves the Apache/mod_php segfault today. Uclibc-1.0.19 includes all commits from 2016-09-26 and older in https://cgit.openadk.org/cgi/cgit/uclibc-ng.git/log/ldso/libdl it therefore includes https://cgit.openadk.org/cgi/cgit/uclibc-ng.git/ commit/ldso/libdl?id=cc04ab27ba6341f46bbe094478c9af3e3706f411 which refers to fix the problem from the 2012 message, but it did not. Regards, Bernd

7 years, 7 months

Missing git tags at github mirror

by Anton Kolesov

Hi, It seems that GitHub mirror at https://github.com/wbx-github/uclibc-ng/tree/master is missing git tags for releases starting with v1.0.23. Mirror at http://repo.or.cz/uclibc-ng.git OTOH has those tags. Anton

7 years, 8 months

[PATCH] netinet/udp: add missing include

by Romain Naour

Since the refactoring introduced by [1] any check using netinet/udp.h fail with the following error: [...]/usr/include/netinet/udp.h:62:7: error: unknown type name 'uint16_t' See the error in netinet/udp.h check: [efl] http://autobuild.buildroot.net/results/8c6/8c629a1c5c4a1d78c8bf09a091a332a4… [trinity] http://autobuild.buildroot.net/results/c8f/c8f34aaaecf931e0044ef858ef587325… [1] 58a5ba12bffad5916d9897c2870fc483f1db8282 Signed-off-by: Romain Naour <romain.naour(a)gmail.com> --- include/netinet/udp.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/netinet/udp.h b/include/netinet/udp.h index ac6f234..f03e2dc 100644 --- a/include/netinet/udp.h +++ b/include/netinet/udp.h @@ -48,6 +48,7 @@ #define __NETINET_UDP_H 1 #include <features.h> +#include <stdint.h> #include <sys/types.h> -- 2.9.4

7 years, 8 months

ld.so cleanup

by Waldemar Brodkorb

Hi, I would suggest following patch, which removes the special communication between ld.so and gdb. While debugging a ld.so issue with gdb 8.0 on alpha, I recognized that the debugger stalled when trying to execute this code. It thought this code was added to help debugging ld.so, but it seems nowadays it prevents to do so. May be bitrotted? Does anyone found it useful while debugging ld.so with gdb in the past? best regards Waldemar

7 years, 8 months

[PATCH] include/features.h: add _DEFAULT_SOURCE macro

by Anthony G. Basile

From: "Anthony G. Basile" <blueness(a)gentoo.org> man feature_test_macros(7) specifies that _BSD_SOURCE and _SVID_SOURCE have been deprecated in favor of _DEFAULT_SOURCE since libc 2.20. Specifying either of the former is now equivalent to specifying just the latter. We add this macro to conform to this standard, but do not add the compiler warning to maintain full backwards compatibility with earlier version of glibc and uclibc. Signed-off-by: Anthony G. Basile <blueness(a)gentoo.org> --- include/features.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/features.h b/include/features.h index f9820791b..362b811fd 100644 --- a/include/features.h +++ b/include/features.h @@ -40,6 +40,7 @@ _SVID_SOURCE ISO C, POSIX, and SVID things. _ATFILE_SOURCE Additional *at interfaces. _GNU_SOURCE All of the above, plus GNU extensions. + _DEFAULT_SOURCE Equivalent to defining _BSD_SOURCE and _SVID_SOURCE. _REENTRANT Select additionally reentrant object. _THREAD_SAFE Same as _REENTRANT, often used by other systems. _FORTIFY_SOURCE If set to numeric value > 0 additional security @@ -140,6 +141,19 @@ # define __GNUC_PREREQ(maj, min) 0 #endif +/* _DEFAULT_SOURCE is equivalent to defining _BSD_SOURCE and _SVID_SOURCE + * and vice versa. */ +#ifdef _DEFAULT_SOURCE +# undef _BSD_SOURCE +# define _BSD_SOURCE 1 +# undef _SVID_SOURCE +# define _SVID_SOURCE 1 +#endif + +#if defined _BSD_SOURCE || defined _SVID_SOURCE +# undef _DEFAULT_SOURCE +# define _DEFAULT_SOURCE 1 +#endif /* If _BSD_SOURCE was defined by the user, favor BSD over POSIX. */ #if defined _BSD_SOURCE && \ -- 2.13.0

7 years, 8 months

uClibc-ng release 1.0.25

by Waldemar Brodkorb

Hi, I released a new version of uClibc-ng today. It contains mostly bugfixes and cleanups. It allows to be used for gcc 7.1 toolchains. have fun, Waldemar

7 years, 9 months

[PATCH] Fix mkostemp64 creation mode.

by Ignacy Gawędzki

All flavors of mkstemp create files with mode S_IRUSR | S_IWUSR, as per POSIX.1-2008. Make mkostemp64 follow that too instead of creating files with mode S_IRUSR | S_IWUSR | S_IXUSR. Signed-off-by: Ignacy Gawędzki <ignacy.gawedzki(a)green-communications.fr> --- libc/stdlib/mkostemp64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libc/stdlib/mkostemp64.c b/libc/stdlib/mkostemp64.c index 25595ad96..aa9736cd6 100644 --- a/libc/stdlib/mkostemp64.c +++ b/libc/stdlib/mkostemp64.c @@ -28,5 +28,5 @@ int mkostemp64 (char *template, int flags) { return __gen_tempname (template, __GT_BIGFILE, flags | O_LARGEFILE, 0, - S_IRUSR | S_IWUSR | S_IXUSR); + S_IRUSR | S_IWUSR); } -- 2.11.0

7 years, 9 months

mkostemp64 creates files with mode 0700

by Ignacy Gawedzki

Hi, I just noticed today that mkostemp64 calls __gen_tempname with mode S_IRUSR | S_IWUSR | S_IXUSR, while all other flavors call it with mode S_IRUSR | S_IWUSR, as per POSIX.1-2008. See libc/stdlib/mkostemp64.c. I assume I don't need to send a patch for that. Cheers, Ignacy -- Ignacy Gawędzki R&D Engineer Green Communications

7 years, 9 months

[PATCH] include/sys/reboot.h: add constants RB_SW_SUSPEND and RB_KEXEC

by Anthony G. Basile

From: "Anthony G. Basile" <blueness(a)gentoo.org> This syncs up <sys/reboot.h> with the GNU C library, see their commit 1a09dc56. These constants are needed by init systems like openrc. Signed-off-by: Anthony G. Basile <blueness(a)gentoo.org> --- include/sys/reboot.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/sys/reboot.h b/include/sys/reboot.h index bc685aebb..fafd2fb0c 100644 --- a/include/sys/reboot.h +++ b/include/sys/reboot.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. +/* Copyright (C) 1996-2017 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -38,6 +38,12 @@ /* Stop system and switch power off if possible. */ #define RB_POWER_OFF 0x4321fedc +/* Suspend system using software suspend. */ +#define RB_SW_SUSPEND 0xd000fce2 + +/* Reboot system into new kernel. */ +#define RB_KEXEC 0x45584543 + __BEGIN_DECLS /* Reboot or halt the system. */ -- 2.13.0

7 years, 9 months

[PATCH] include/sys/reboot.h: add constants RB_SW_SUSPEND and RB_KEXEC

by Anthony G. Basile

This syncs up <sys/reboot.h> with the GNU C library, see their commit 1a09dc56. These constants are needed by init systems like openrc. Signed-off-by: Anthony G. Basile <blueness(a)gentoo.org> --- include/sys/reboot.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/include/sys/reboot.h b/include/sys/reboot.h index bc685aebb..fafd2fb0c 100644 --- a/include/sys/reboot.h +++ b/include/sys/reboot.h @@ -1,4 +1,4 @@ -/* Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. +/* Copyright (C) 1996-2017 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -38,6 +38,12 @@ /* Stop system and switch power off if possible. */ #define RB_POWER_OFF 0x4321fedc +/* Suspend system using software suspend. */ +#define RB_SW_SUSPEND 0xd000fce2 + +/* Reboot system into new kernel. */ +#define RB_KEXEC 0x45584543 + __BEGIN_DECLS /* Reboot or halt the system. */ -- 2.13.0

7 years, 9 months

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