Bug 173146
Summary: | Panic in serial.c | ||||||
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Product: | Red Hat Enterprise Linux 3 | Reporter: | Tom "spot" Callaway <tcallawa> | ||||
Component: | kernel | Assignee: | Don Howard <dhoward> | ||||
Status: | CLOSED WONTFIX | QA Contact: | Brian Brock <bbrock> | ||||
Severity: | medium | Docs Contact: | |||||
Priority: | medium | ||||||
Version: | 3.0 | CC: | jbaron, lwang, petrides | ||||
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: | 2007-10-19 18:51:14 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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Description
Tom "spot" Callaway
2005-11-14 17:06:08 UTC
Created attachment 121027 [details]
Patch to prevent tty NULL in tty_wakeup
This problem was fixed in RHEL3 U5. Please upgrade to U6 (2.4.21-37.EL). *** This bug has been marked as a duplicate of 131674 *** Please look again at U6. This is a new patch to fix a related issue to 131674, but this is not a dupe. This patch was generated off the U6 kernel tree. :) Hi, Tom. The reason that I thought that this might be a dup is that the tty changes in U5 should prevent this problem from occurring. Before investing any time on this, I think we should have confirmation that this problem exists on U5 (or U6). Please verify this (and provide the oops output on a more recent kernel). Thanks in advance. Hi, Tom. This is getting to be a difficult issue. Basically, the customer is running an unsupported kernel. We can't verify for certain that the tty fixes committed to U5 are exactly what they're running. (There were multiple versions of the very large and complex tty patch.) Further, at least one other tty change went into U5 that could be related (dealing with races in forking and controlling tty assignment). Lastly, I don't feel that the check in tty_wakeup() in comment #1 is appropriate, since if there's an open/close race in drivers/char/serial.c, the problem should be fixed in that driver. Thus, to make progress on resolving this issue, I think we need to have the problem reproduced on stock U6. Reassigning to Don and reverting to NEEDINFO (requesting a U6-based oops or reproducer). This bug is filed against RHEL 3, which is in maintenance phase. During the maintenance phase, only security errata and select mission critical bug fixes will be released for enterprise products. Since this bug does not meet that criteria, it is now being closed. For more information of the RHEL errata support policy, please visit: http://www.redhat.com/security/updates/errata/ If you feel this bug is indeed mission critical, please contact your support representative. You may be asked to provide detailed information on how this bug is affecting you. |