* [GIT PULL] tracing/scripts: Fix some initialization problems
@ 2022-01-18 23:17 Steven Rostedt
2022-01-19 9:48 ` pr-tracker-bot
0 siblings, 1 reply; 2+ messages in thread
From: Steven Rostedt @ 2022-01-18 23:17 UTC (permalink / raw)
To: Linus Torvalds
Cc: LKML, Ingo Molnar, Andrew Morton, Yinan Liu, Nathan Chancellor
Yinan Liu <yinan@linux.alibaba.com>
Linus,
tracing/scripts: Possible uninitialized variable
The 0day bot discovered a possible uninitialized path in the
scripts that sort the mcount sections at build time. Just needed
to initialize that variable.
Please pull the latest trace-v5.17-2 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-v5.17-2
Tag SHA1: f6512a8d14cbc7d3a9cb63c872fbbabe26399a5a
Head SHA1: 35140d399db2b67153fc53b51a97ddb8ba3b5956
Yinan Liu (1):
script/sorttable: Fix some initialization problems
----
scripts/sorttable.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
---------------------------
commit 35140d399db2b67153fc53b51a97ddb8ba3b5956
Author: Yinan Liu <yinan@linux.alibaba.com>
Date: Tue Jan 18 14:52:41 2022 +0800
script/sorttable: Fix some initialization problems
elf_mcount_loc and mcount_sort_thread definitions are not
initialized immediately within the function, which can cause
the judgment logic to use uninitialized values when the
initialization logic of subsequent code fails.
Link: https://lkml.kernel.org/r/20211212113358.34208-2-yinan@linux.alibaba.com
Link: https://lkml.kernel.org/r/20220118065241.42364-1-yinan@linux.alibaba.com
Fixes: 72b3942a173c ("scripts: ftrace - move the sort-processing in ftrace_init")
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Yinan Liu <yinan@linux.alibaba.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/scripts/sorttable.h b/scripts/sorttable.h
index 1e8b77928fa4..deb7c1d3e979 100644
--- a/scripts/sorttable.h
+++ b/scripts/sorttable.h
@@ -199,6 +199,8 @@ static int compare_extable(const void *a, const void *b)
return 0;
}
#ifdef MCOUNT_SORT_ENABLED
+pthread_t mcount_sort_thread;
+
struct elf_mcount_loc {
Elf_Ehdr *ehdr;
Elf_Shdr *init_data_sec;
@@ -282,10 +284,9 @@ static int do_sort(Elf_Ehdr *ehdr,
unsigned int shnum;
unsigned int shstrndx;
#ifdef MCOUNT_SORT_ENABLED
- struct elf_mcount_loc mstruct;
+ struct elf_mcount_loc mstruct = {0};
uint_t _start_mcount_loc = 0;
uint_t _stop_mcount_loc = 0;
- pthread_t mcount_sort_thread;
#endif
#if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED)
unsigned int orc_ip_size = 0;
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [GIT PULL] tracing/scripts: Fix some initialization problems
2022-01-18 23:17 [GIT PULL] tracing/scripts: Fix some initialization problems Steven Rostedt
@ 2022-01-19 9:48 ` pr-tracker-bot
0 siblings, 0 replies; 2+ messages in thread
From: pr-tracker-bot @ 2022-01-19 9:48 UTC (permalink / raw)
To: Steven Rostedt
Cc: Linus Torvalds, LKML, Ingo Molnar, Andrew Morton, Yinan Liu,
Nathan Chancellor
The pull request you sent on Tue, 18 Jan 2022 18:17:09 -0500:
> git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git trace-v5.17-2
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/e9f5cbc0c851c1cf98e4ecc5d72b5563d3fc5605
Thank you!
--
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https://korg.docs.kernel.org/prtracker.html
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