From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0) Description of problem: Glibc, as shipped with RedHat 7.2 i686 contains code that accesses the wrong side of %esp (which is async-signal unsafe) Version-Release number of selected component (if applicable): glibc-2.2.4-13 gcc-2.96-98 How reproducible: Always Steps to Reproduce: 1. gdb /lib/i686/libc.so.6 2. disas __mpn_construct_double 3. Actual Results: 0x55660 <__mpn_construct_double>: push %ebp 0x55661 <__mpn_construct_double+1>: mov %esp,%ebp 0x55663 <__mpn_construct_double+3>: mov 0x10(%ebp),%eax 0x55666 <__mpn_construct_double+6>: push %edi 0x55667 <__mpn_construct_double+7>: mov %edi,%edx 0x55669 <__mpn_construct_double+9>: and $0x7fffffff,%edx 0x5566f <__mpn_construct_double+15>: push %esi ... instructions that do not affect %esp (currently == %ebp-8) 0x5569b <__mpn_construct_double+59>: mov %esi,0xfffffff0(%ebp) ... above instruction saves %esi at [%ebp-16] -- ... on the wrong side of %esp ... ... any interrupt between here and: 0x556b4 <__mpn_construct_double+84>: fldl 0xfffffff0(%ebp) ... will cause incorrect result Additional info: Using RedHat 7.2 (Enigma)
Should be fixed in gcc-2.96-103, currently at: ftp://people.redhat.com/jakub/gcc/2.96-103/
I am not familiar with the Red Hat Linux RPMs, but at ftp://people.redhat.com/jakub/gcc/2.96-103/, I did not find anything that looks like an RPM for libc.so.6. Will there be an official Red Hat Linux 7.2 update that includes a recompiled libc.so.6?
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2002-055.html