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authorMasami Hiramatsu <mhiramat@redhat.com>2009-03-23 10:14:52 -0400
committerIngo Molnar <mingo@elte.hu>2009-03-25 18:53:29 +0100
commitfee039a1d05c6e0f71b0fe270d847742a02d56c4 (patch)
tree8a876f852588e2ff4219ab29de4586b8a40556f9 /kernel/trace
parenta524446fe82f7f38738403a5a080c4910af86a61 (diff)
x86: kretprobe-booster interrupt emulation code fix
Fix interrupt emulation code in kretprobe-booster according to pt_regs update (es/ds change and gs adding). This issue has been reported on systemtap-bugzilla: http://sources.redhat.com/bugzilla/show_bug.cgi?id=9965 | On a -tip kernel on x86_32, kretprobe_example (from samples) triggers the | following backtrace when its retprobing a class of functions that cause a | copy_from/to_user(). | | BUG: sleeping function called from invalid context at mm/memory.c:3196 | in_atomic(): 0, irqs_disabled(): 1, pid: 2286, name: cat Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Tested-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Cc: systemtap-ml <systemtap@sources.redhat.com> LKML-Reference: <49C7995C.2010601@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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