Note: This is a beta release of Red Hat Bugzilla 5.0. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Also email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback here.
Bug 2089 - gets segv on /dev/ttyS1; clobbers stack; Thinkpad380ED
Summary: gets segv on /dev/ttyS1; clobbers stack; Thinkpad380ED
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: rhs-hwdiag
Version: 6.0
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Bill Nottingham
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 1999-04-09 15:51 UTC by Marty Shannon
Modified: 2014-03-17 02:09 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 1999-08-09 18:27:38 UTC

Attachments (Terms of Use)

Description Marty Shannon 1999-04-09 15:51:45 UTC
rhs-hwdiag-0.35-2 gets a segmentation violation during/after
checking (the non-existant) /dev/ttyS1 on my IBM ThinkPad
380ED.  It manages to trash the stack (it shows "#0
0xff00ff00 in ?? ()" in a gdb stack trace).  Running it
again (under gdb), it fails again in a similar way, showing
"#0 0xff00ff in ?? ()" in the stack trace.

Comment 1 Cristian Gafton 1999-04-09 18:21:59 UTC
assigned to notting

Comment 2 Bill Nottingham 1999-05-24 15:39:59 UTC
can you rebuild this with debugging symbols and get a stack

Comment 3 Bill Nottingham 1999-06-23 21:20:59 UTC
closed due to lack of input.

Comment 4 Marty Shannon 1999-08-07 16:43:59 UTC
I just discovered by accident that hwdiag exhibits similar behavior
when run with the ide-scsi module loaded.  I'll track down some more
details & report what I find.  (SMP: dual PII, 768Meg RAM, 3 IDE disk,
1 IDE cdrom, Adaptec 3940 with 1 wide drive)

Comment 5 Marty Shannon 1999-08-07 16:58:59 UTC
Found it.  In lib/devprobe.c line 138, strdup() can be called with
s->fields[i]->value == 0.  If that call to strdup() is made
conditional on the value of s->fields[i]->value, all is happy
(although the CLASS field will be empty for the CDROM).

Comment 6 Bill Nottingham 1999-08-09 18:27:59 UTC
fixed in rhs-hwdiag-0.36-3, which will be in next Raw Hide

Note You need to log in before you can comment on or make changes to this bug.