Bug 62548
| Summary: | pause when su-ing from nobody with pam-0.75-18.7 | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Steve Mellor <steveme> |
| Component: | pam | Assignee: | Jindrich Novy <jnovy> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Aaron Brown <abrown> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.1 | CC: | pknirsch |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-10-03 19:15:20 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: | |||
[root@localhost root]#su - nobody This account is currently not available. Looks like there's no more possible to log in as nobody. |
Description of problem: su hangs for approx 20 sec when su-ing from nobody. no hang if pam_xauth.so is commented out of /etc/pam.d/su no hang if you su from any other user than nobody Version-Release number of selected component: pam-0.75-18.7 How reproducible: Always Steps to Reproduce: 1. update pam to pam-0.75-18.7 (the fix for RHBA-2001:149-14) 2. from a root login: 'su - nobody' 3. su - <a user> once the password is entered there is a 20 sec delay before the su command completes. strace on the 'su' shows : [snip] read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 4096 close(3) = 0 munmap(0x40022000, 4096) = 0 getgid32() = 99 getuid32() = 99 pipe([3, 4]) = 0 pipe([5, 6]) = 0 fork() = 24264 close(3) = 0 close(6) = 0 close(4) = 0 read(5, <20 seconds delay> "", 2048) = 0 --- SIGCHLD (Child exited) --- close(5) = 0 wait4(24264, NULL, 0, NULL) = 24264 fork() = 24265 rt_sigprocmask(SIG_BLOCK, ~[], NULL, 8) = 0 rt_sigaction(SIGTERM, {0x80498c0, [], 0x4000000}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [ALRM TERM], NULL, 8) = 0 wait4(-1,