Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Cause: man page showed wrong default values for coredump_filter and incomplete descriptions of all bits.
Consequence: incomplete and incorrect documentation
Fix: description of missing bits added and default value corrected
Result: correct documentation for coredump_filter
Description of problem:
core(5) man page shows incorrect default value for coredump_filter. It should show 0x33
Also, just above this point it lists meanings for bits 0-3, but there are meanings for bits 4-6.
Version-Release number of selected component (if applicable):
man-pages-3.22-20.el6.noarch
How reproducible:
100%
Steps to Reproduce:
1. man core
2. /coredump_filter
Actual results:
Shows following text:
bit 0 Dump anonymous private mappings.
bit 1 Dump anonymous shared mappings.
bit 2 Dump file-backed private mappings.
bit 3 Dump file-backed shared mappings.
The default value of coredump_filter is 0x3; this reflects traditional
Linux behavior and means that only anonymous memory segments are
dumped.
Expected results:
Lists values for all relevant bits, and specifies the default value of coredump_filter is 0x33.
Additional info:
The remaining bits should be:
bit 4 Dump ELF headers.
bit 5 Dump huge pages that have private mappings
bit 6 Dump huge pages that have shared mappings.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2014-1382.html
Description of problem: core(5) man page shows incorrect default value for coredump_filter. It should show 0x33 Also, just above this point it lists meanings for bits 0-3, but there are meanings for bits 4-6. Version-Release number of selected component (if applicable): man-pages-3.22-20.el6.noarch How reproducible: 100% Steps to Reproduce: 1. man core 2. /coredump_filter Actual results: Shows following text: bit 0 Dump anonymous private mappings. bit 1 Dump anonymous shared mappings. bit 2 Dump file-backed private mappings. bit 3 Dump file-backed shared mappings. The default value of coredump_filter is 0x3; this reflects traditional Linux behavior and means that only anonymous memory segments are dumped. Expected results: Lists values for all relevant bits, and specifies the default value of coredump_filter is 0x33. Additional info: The remaining bits should be: bit 4 Dump ELF headers. bit 5 Dump huge pages that have private mappings bit 6 Dump huge pages that have shared mappings.