Bug 141491
| Summary: | DT_INITFIRST, DT_PREINIT_ARRAY are invisible to audit by r_debug.r_brk | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | John Reiser <jreiser> |
| Component: | glibc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED RAWHIDE | QA Contact: | Brian Brock <bbrock> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3 | CC: | drepper |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2005-07-06 21:35:04 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Rawhide glibc notifies the debugger far earlier. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.2) Gecko/20040308 Description of problem: During module loading, functions specified in PT_DYNAMIC by DT_INITFIRST and DT_PREINIT_ARRAY are called before r_debug.r_brk is notified that a new module has been loaded. [Functions specified by DT_INIT and DT_INITARRAY are called after .r_brk has been told about RT_ADD.] This makes it difficult to debug and/or audit the DT_INITFIRST and DT_PREINIT_ARRAY functions. There should be new RT_ADDFIRST and RT_ADDPRE values [analogous to RT_ADD], and corresponding calls to r_debug.r_brk, so that an audit can see all activity that results from loading a new module. Version-Release number of selected component (if applicable): glibc-2.3.3-74 How reproducible: Always Steps to Reproduce: 1. Inspect code for _dl_init() in elf/dl-init.c 2. 3. Actual Results: Functions tagged with DT_INITFIRST and DT_PREINIT_ARRAY are called before r_debug.r_brk is notified that a new module has been loaded. Expected Results: r_debug.r_brk is notified before any instruction in the newly-loaded modules is executed. There should be distinguishable notifications for DT_INITFIRST and DT_PREINIT_ARRAY, in contrast to DT_INITARRAY. Additional info: