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| author | Andrey Konovalov <andreyknvl@google.com> | 2022-03-25 04:12:49 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 05:06:49 +0300 |
| commit | b3bb1d700e51128e9ff818f76b930403b1ed2c7d (patch) | |
| tree | 4e97c3cbae0b4020d1d1f09111944a881ca2bb1a | |
| parent | b91328002d266da3f53703f753b3a2af0dc9b9c1 (diff) | |
| download | linux-b3bb1d700e51128e9ff818f76b930403b1ed2c7d.tar.xz | |
kasan: restructure kasan_report
Restructure kasan_report() to make reviewing the subsequent patches
easier.
Link: https://lkml.kernel.org/r/ca28042889858b8cc4724d3d4378387f90d7a59d.1646237226.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/kasan/report.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index a0d4a9d3f933..41c7966451e3 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -457,15 +457,18 @@ static void __kasan_report(void *addr, size_t size, bool is_write, bool kasan_report(unsigned long addr, size_t size, bool is_write, unsigned long ip) { - unsigned long flags = user_access_save(); - bool ret = false; + unsigned long ua_flags = user_access_save(); + bool ret = true; - if (likely(report_enabled())) { - __kasan_report((void *)addr, size, is_write, ip); - ret = true; + if (unlikely(!report_enabled())) { + ret = false; + goto out; } - user_access_restore(flags); + __kasan_report((void *)addr, size, is_write, ip); + +out: + user_access_restore(ua_flags); return ret; } |