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[Bug runtime/5648] New: Unaligned access to memory in _stp_vsnprintf() on ia64
- From: "mhiramat at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 19 Jan 2008 00:06:51 -0000
- Subject: [Bug runtime/5648] New: Unaligned access to memory in _stp_vsnprintf() on ia64
- Reply-to: sourceware-bugzilla at sourceware dot org
When I ran testsuite/systemtap.printf/bin4.stp and bin5.stp on ia64, I got
"kernel unaligned access" messages as below;
---(bin4.stp)
bin4: systemtap: 0.6/Red Hat elfutils 0.125, base: a0000002083b4000, memory:
167908+71616+13696+14000+696673 data+text+ctx+io+glob, probes: 1
kernel unaligned access to 0xe0000007914b4026, ip=0xa0000002083bd4c1
kernel unaligned access to 0xe0000007914b402d, ip=0xa0000002083bd4c1
---
---(bin5.stp)
bin5: systemtap: 0.6/Red Hat elfutils 0.125, base: a0000002083b4000, memory:
167908+71616+13696+14000+696673 data+text+ctx+io+glob, probes: 1
kernel unaligned access to 0xe0000007a29a0004, ip=0xa0000002083bd631
kernel unaligned access to 0xe0000007a29a000c, ip=0xa0000002083bd631
kernel unaligned access to 0xe0000007a29a0014, ip=0xa0000002083bd631
kernel unaligned access to 0xe0000007a29a001c, ip=0xa0000002083bd631
kernel unaligned access to 0xe0000007a29a0024, ip=0xa0000002083bd631
---
And both ip was in _stp_vsnprintf().
---
$ nm bin4.ko | sort
...
0000000000008560 T _stp_vsnprintf
0000000000009720 T _stp_vscnprintf
...
$ nm bin5.ko | sort
...
0000000000008540 T _stp_vsnprintf
0000000000009700 T _stp_vscnprintf
---
--
Summary: Unaligned access to memory in _stp_vsnprintf() on ia64
Product: systemtap
Version: unspecified
Status: NEW
Severity: minor
Priority: P3
Component: runtime
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: mhiramat at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=5648
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