* [folded-merged] kasan-detect-negative-size-in-memory-operation-function-fix-2.patch removed from -mm tree
@ 2020-04-02 3:33 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2020-04-02 3:33 UTC (permalink / raw)
To: mm-commits, peterz, rdunlap, walter-zh.wu
The patch titled
Subject: kasan-detect-negative-size-in-memory-operation-function-fix-2
has been removed from the -mm tree. Its filename was
kasan-detect-negative-size-in-memory-operation-function-fix-2.patch
This patch was dropped because it was folded into kasan-detect-negative-size-in-memory-operation-function.patch
------------------------------------------------------
From: Peter Zijlstra <peterz@infradead.org>
Subject: kasan-detect-negative-size-in-memory-operation-function-fix-2
fix objtool warning
mm/kasan/common.o: warning: objtool: kasan_report()+0x13: call to report_enabled() with UACCESS enabled
Link: http://lkml.kernel.org/r/20200305095436.GV2596@hirez.programming.kicks-ass.net
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Walter Wu <walter-zh.wu@mediatek.com>
Tested-by: Walter Wu <walter-zh.wu@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/kasan/common.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
--- a/mm/kasan/common.c~kasan-detect-negative-size-in-memory-operation-function-fix-2
+++ a/mm/kasan/common.c
@@ -641,16 +641,17 @@ extern bool report_enabled(void);
bool kasan_report(unsigned long addr, size_t size, bool is_write, unsigned long ip)
{
- unsigned long flags;
+ unsigned long flags = user_access_save();
+ bool ret = false;
- if (likely(!report_enabled()))
- return false;
+ if (likely(report_enabled())) {
+ __kasan_report(addr, size, is_write, ip);
+ ret = true;
+ }
- flags = user_access_save();
- __kasan_report(addr, size, is_write, ip);
user_access_restore(flags);
- return true;
+ return ret;
}
#ifdef CONFIG_MEMORY_HOTPLUG
_
Patches currently in -mm which might be from peterz@infradead.org are
kasan-detect-negative-size-in-memory-operation-function.patch
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2020-04-02 3:33 [folded-merged] kasan-detect-negative-size-in-memory-operation-function-fix-2.patch removed from -mm tree akpm
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