The patch titled
Subject: fscache: fix fscache_objlist_show format processing
has been removed from the -mm tree. Its filename was
fscache-fix-fscache_objlist_show-format-processing.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: fscache: fix fscache_objlist_show format processing
gcc points out a minor bug in the handling of unknown
cookie types, which could result in a string overflow
when the integer is copied into a 3-byte string:
fs/fscache/object-list.c: In function 'fscache_objlist_show':
fs/fscache/object-list.c:265:19: error: 'sprintf' may write a terminating nul past the end of the destination [-Werror=format-overflow=]
sprintf(_type, "%02u", cookie->def->type);
^~~~~~
fs/fscache/object-list.c:265:4: note: 'sprintf' output between 3 and 4 bytes into a destination of size 3
This is currently harmless as no code sets a type other
than 0 or 1, but it makes sense to use snprintf() here
to avoid overflowing the array if that changes.
Link: http://lkml.kernel.org/r/20170714120720.906842-22-arnd@xxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/fscache/object-list.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN fs/fscache/object-list.c~fscache-fix-fscache_objlist_show-format-processing fs/fscache/object-list.c
--- a/fs/fscache/object-list.c~fscache-fix-fscache_objlist_show-format-processing
+++ a/fs/fscache/object-list.c
@@ -262,7 +262,8 @@ static int fscache_objlist_show(struct s
type = "DT";
break;
default:
- sprintf(_type, "%02u", cookie->def->type);
+ snprintf(_type, sizeof(_type), "%02u",
+ cookie->def->type);
type = _type;
break;
}
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
iopoll-avoid-wint-in-bool-context-warning.patch
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