* [Bug kprobes/2667] New: Kernel panic occur when kprobing callq instruction on x86_64
@ 2006-05-16 21:27 soshima at redhat dot com
2006-05-16 21:34 ` [Bug kprobes/2667] " soshima at redhat dot com
2006-06-15 15:57 ` soshima at redhat dot com
0 siblings, 2 replies; 3+ messages in thread
From: soshima at redhat dot com @ 2006-05-16 21:27 UTC (permalink / raw)
To: systemtap
Kernel panic occurs if we put a probe on callq instruction.
This problem always occurs when probes callq instruction.
This problem is only on x86_64.
If resume_execution() found 0xff at first byte of
p->ainsn.insn, it must check the _second_ byte.
But current resume_execution() check _first_ byte again
in mainline.
This causes the kernel panic of Bad RIP value.
--
Summary: Kernel panic occur when kprobing callq instruction on
x86_64
Product: systemtap
Version: unspecified
Status: NEW
Severity: critical
Priority: P2
Component: kprobes
AssignedTo: systemtap at sources dot redhat dot com
ReportedBy: soshima at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=2667
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* [Bug kprobes/2667] Kernel panic occur when kprobing callq instruction on x86_64
2006-05-16 21:27 [Bug kprobes/2667] New: Kernel panic occur when kprobing callq instruction on x86_64 soshima at redhat dot com
@ 2006-05-16 21:34 ` soshima at redhat dot com
2006-06-15 15:57 ` soshima at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: soshima at redhat dot com @ 2006-05-16 21:34 UTC (permalink / raw)
To: systemtap
------- Additional Comments From soshima at redhat dot com 2006-05-16 21:33 -------
Created an attachment (id=1029)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=1029&action=view)
patch to resume_execution bug on x86_64
This patch is against 2.6.17-rc3-mm1.
We have tested this on Pentium D, and confirmed not to occur kernel panic.
--
http://sourceware.org/bugzilla/show_bug.cgi?id=2667
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* [Bug kprobes/2667] Kernel panic occur when kprobing callq instruction on x86_64
2006-05-16 21:27 [Bug kprobes/2667] New: Kernel panic occur when kprobing callq instruction on x86_64 soshima at redhat dot com
2006-05-16 21:34 ` [Bug kprobes/2667] " soshima at redhat dot com
@ 2006-06-15 15:57 ` soshima at redhat dot com
1 sibling, 0 replies; 3+ messages in thread
From: soshima at redhat dot com @ 2006-06-15 15:57 UTC (permalink / raw)
To: systemtap
------- Additional Comments From soshima at redhat dot com 2006-06-15 15:57 -------
This problem was fixed in 2.6.17-rc5.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://sourceware.org/bugzilla/show_bug.cgi?id=2667
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2006-05-16 21:27 [Bug kprobes/2667] New: Kernel panic occur when kprobing callq instruction on x86_64 soshima at redhat dot com
2006-05-16 21:34 ` [Bug kprobes/2667] " soshima at redhat dot com
2006-06-15 15:57 ` soshima at redhat dot com
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