Messages in this thread Patch in this message | | | From | Masami Hiramatsu <> | Subject | [PATCH tracing/kprobes 1/7] x86/ptrace: Fix regs_get_argument_nth() to add correct offset | Date | Thu, 10 Sep 2009 19:53:06 -0400 |
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Fix regs_get_argument_nth() to add correct offset bytes. Because offset_of() returns offset in byte, the offset should be added to char * instead of unsigned long *.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: Jim Keniston <jkenisto@us.ibm.com> Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jason Baron <jbaron@redhat.com> Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Tom Zanussi <tzanussi@gmail.com> ---
arch/x86/kernel/ptrace.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c index a33a17d..caffb68 100644 --- a/arch/x86/kernel/ptrace.c +++ b/arch/x86/kernel/ptrace.c @@ -150,7 +150,7 @@ static const int arg_offs_table[] = { unsigned long regs_get_argument_nth(struct pt_regs *regs, unsigned int n) { if (n < ARRAY_SIZE(arg_offs_table)) - return *((unsigned long *)regs + arg_offs_table[n]); + return *(unsigned long *)((char *)regs + arg_offs_table[n]); else { /* * The typical case: arg n is on the stack.
-- Masami Hiramatsu
Software Engineer Hitachi Computer Products (America), Inc. Software Solutions Division
e-mail: mhiramat@redhat.com
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