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[Bug kprobes/2667] New: Kernel panic occur when kprobing callq instruction on x86_64
- From: "soshima at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sources dot redhat dot com
- Date: 16 May 2006 21:27:31 -0000
- Subject: [Bug kprobes/2667] New: Kernel panic occur when kprobing callq instruction on x86_64
- Reply-to: sourceware-bugzilla at sourceware dot org
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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