Bug 86490
| Summary: | useradd crashes while adding user | ||||||
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| Product: | [Retired] Red Hat Linux | Reporter: | Per Steinar Iversen <persteinar.iversen> | ||||
| Component: | shadow-utils | Assignee: | Peter Vrabec <pvrabec> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | David Lawrence <dkl> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 9 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i386 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | 4.0.12-5.FC4 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2005-11-09 10:35:56 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: | |||||||
| Attachments: |
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Created attachment 90895 [details]
A small shell-script that illustrates the problem
On a freshly installed test machine running RH 9 and shadow-utils-4.0.3-6 the
output of this script crashes groupadd/groupdel after adding 2057 users. The
only way to recover is to edit passwd, shadow, group, gshadow by hand,
shadow-utils does not handle this case at all.
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Description of problem: useradd segfaults while adding user when a large group already exists. Version-Release number of selected component (if applicable): shadow-utils-4.0.3-6 How reproducible: Always. Steps to Reproduce: 1. Make a very large group. 2. Add users, also adding them to the large group. 3. useradd eventually dies when there are too many member of the group. Actual results: # /usr/sbin/useradd -u 1440072 -g 1440072 -d /dev/null -s /bin/false aluit32 Segmentation fault The end of a trace done with "strace -f": read(8, ",s116518,s116519,s116520,s116521"..., 4096) = 4096 read(8, ",s117249,s117250,s117252,s117253"..., 4096) = 4096 read(8, "s100673,s100681,s100683,s100687,"..., 4096) = 4096 brk(0) = 0x8440000 brk(0x8444000) = 0x8444000 read(8, "s109058,s109060,s109061,s109064,"..., 4096) = 4096 brk(0) = 0x8444000 brk(0x8449000) = 0x8449000 read(8, "s116530,s116531,s116533,s116534,"..., 4096) = 4096 read(8, "s117270,s117271,s117272,s117273,"..., 4096) = 4096 brk(0) = 0x8449000 brk(0x844c000) = 0x844c000 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++ Expected results: The user should have been created. Additional info: The machine is to be a Samba PDC for a large student network.