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Groups > linux.kernel > #1262364
| From | Steven Rostedt <rostedt@goodmis.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [for-next][PATCH 02/13] recordmcount: Fix endianness handling bug for nop_mcount |
| Date | 2015-11-04 16:40 +0100 |
| Message-ID | <qr8ki-2go-31@gated-at.bofh.it> (permalink) |
| References | <qr8kh-2go-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: libin <huawei.libin@huawei.com>
In nop_mcount, shdr->sh_offset and welp->r_offset should handle
endianness properly, otherwise it will trigger Segmentation fault
if the recordmcount main and file.o have different endianness.
Link: http://lkml.kernel.org/r/563806C7.7070606@huawei.com
Cc: <stable@vger.kernel.org> # 3.0+
Signed-off-by: Li Bin <huawei.libin@huawei.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
scripts/recordmcount.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
index 49b582a225b0..b9897e2be404 100644
--- a/scripts/recordmcount.h
+++ b/scripts/recordmcount.h
@@ -377,7 +377,7 @@ static void nop_mcount(Elf_Shdr const *const relhdr,
if (mcountsym == Elf_r_sym(relp) && !is_fake_mcount(relp)) {
if (make_nop)
- ret = make_nop((void *)ehdr, shdr->sh_offset + relp->r_offset);
+ ret = make_nop((void *)ehdr, _w(shdr->sh_offset) + _w(relp->r_offset));
if (warn_on_notrace_sect && !once) {
printf("Section %s has mcount callers being ignored\n",
txtname);
--
2.6.1
--
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[for-next][PATCH 00/13] tracing: Some more last minute cleanups and fixes for 4.4 Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 13/13] tracing: Put back comma for empty fields in boot string parsing Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 05/13] tracing: Rename max_stack_lock to stack_trace_max_lock Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 12/13] tracing: Apply tracer specific options from kernel command line. Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 09/13] tracing: Allow dumping traces without tracking trace started cpus Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 02/13] recordmcount: Fix endianness handling bug for nop_mcount Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 07/13] ring_buffer: Do no not complete benchmark reader too early Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 06/13] tracing: Remove redundant TP_ARGS redefining Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 08/13] ring_buffer: Fix more races when terminating the producer in the benchmark Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 10/13] ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 04/13] tracing: Allow arch-specific stack tracer Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 03/13] recordmcount: arm64: Replace the ignored mcount call into nop Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100 [for-next][PATCH 01/13] tracepoints: Fix documentation of RCU lockdep checks Steven Rostedt <rostedt@goodmis.org> - 2015-11-04 16:40 +0100
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