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[Bug libc/11577] New: LD_DEBUG=versions causes segfault on binaries with unsatisfied version dependencies
- From: "ygrek at autistici dot org" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sources dot redhat dot com
- Date: 7 May 2010 11:47:06 -0000
- Subject: [Bug libc/11577] New: LD_DEBUG=versions causes segfault on binaries with unsatisfied version dependencies
- Reply-to: sourceware-bugzilla at sourceware dot org
$ ./app
./app: /usr/lib/libcurl-gnutls.so.4: no version information available (required by ./app)
$ LD_DEBUG=versions ./app
4646: checking for version `GLIBC_2.2' in file /lib/librt.so.1 [0] required by file ./app [0]
4646: checking for version `GLIBC_2.0' in file /lib/libdl.so.2 [0] required by file ./app [0]
4646: checking for version `GLIBC_2.1' in file /lib/libdl.so.2 [0] required by file ./app [0]
4646: checking for version `GLIBC_2.1' in file /lib/libm.so.6 [0] required by file ./app [0]
4646: checking for version `GLIBC_2.0' in file /lib/libm.so.6 [0] required by file ./app [0]
4646: checking for version `libmysqlclient_15' in file /usr/lib/mysql/libmysqlclient.so.15 [0] required
by file ./app [0]
4646: checking for version `CURL_GNUTLS_3' in file /usr/lib/libcurl-gnutls.so.4 [0] required by file ./
app [0]
Segmentation fault
gdb shows:
Program received signal SIGSEGV, Segmentation fault.
0x002a89a3 in strlen () from /lib/ld-linux.so.2
(gdb) bt
#0 0x002a89a3 in strlen () from /lib/ld-linux.so.2
#1 0x002a1e16 in _dl_debug_vdprintf () from /lib/ld-linux.so.2
#2 0x002a1efe in _dl_debug_printf () from /lib/ld-linux.so.2
#3 0x002a118f in _dl_signal_cerror () from /lib/ld-linux.so.2
#4 0x002a2162 in match_symbol () from /lib/ld-linux.so.2
#5 0x002a2522 in _dl_check_map_versions () from /lib/ld-linux.so.2
#6 0x002a284d in _dl_check_all_versions () from /lib/ld-linux.so.2
#7 0x0029559d in version_check_doit () from /lib/ld-linux.so.2
#8 0x002a0dce in _dl_receive_error () from /lib/ld-linux.so.2
#9 0x0029658f in dl_main () from /lib/ld-linux.so.2
#10 0x002a6ffb in _dl_sysdep_start () from /lib/ld-linux.so.2
#11 0x002942b8 in _dl_start () from /lib/ld-linux.so.2
#12 0x00293817 in _start () from /lib/ld-linux.so.2
This is on CentOS 5.4 i686 with glibc 2.5, but judging from the code bug is still present in git trunk.
Patch:
diff --git elf/dl-version.c elf/dl-version.c
index c59a6c3..3df8ebe 100644
--- elf/dl-version.c
+++ elf/dl-version.c
@@ -169,7 +169,7 @@ no version information available (required by ", name, ")");
result = 1;
call_cerror:
_dl_signal_cerror (0, map->l_name[0] ? map->l_name : rtld_progname,
- NULL, errstring);
+ N_("version error"), errstring);
return result;
}
PS: And it would have been really helpful if patch from bug #794 was committed thus preventing
crash..
--
Summary: LD_DEBUG=versions causes segfault on binaries with
unsatisfied version dependencies
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
AssignedTo: drepper at redhat dot com
ReportedBy: ygrek at autistici dot org
CC: glibc-bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=11577
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