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[Bug general/4856] Rich stack traces (fstack -a) throw a NPE exception
- From: "pmuldoon at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: frysk-bugzilla at sourceware dot org
- Date: 27 Jul 2007 17:32:16 -0000
- Subject: [Bug general/4856] Rich stack traces (fstack -a) throw a NPE exception
- References: <20070727165631.4856.pmuldoon@redhat.com>
- Reply-to: sourceware-bugzilla at sourceware dot org
------- Additional Comments From pmuldoon at redhat dot com 2007-07-27 17:32 -------
It fails at frame 2
[pmuldoon@localhost frysk-core]$ ./frysk/bindir/fstack 20214
Task #20214
#0 0x00110402 in __kernel_vsyscall ()
#1 0x43ec2c19 in __waitpid_nocancel ()
#2 0x100f41dd in [unknown]
because the call made to dwfl.getModule() returns null at that address (so
.getName() will cause an NPE)
[pmuldoon@localhost frysk-core]$ ./frysk/bindir/fstack -a 20214
Subprogram is null. At Adjusted address: 0x110402
Subprogram is null. At Adjusted address: 0x43ec2c18
Subprogram is null. At Adjusted address: 0x100f41dc
dwfl.getModule(0x100f41dc) returns null
--
http://sourceware.org/bugzilla/show_bug.cgi?id=4856
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