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Groups > linux.kernel > #1593614
| From | Kees Cook <keescook@chromium.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 4/6] bug: Enable DEBUG_SG under BUG_ON_DATA_CORRUPTION |
| Date | 2017-03-06 20:20 +0100 |
| Message-ID | <ti6kN-4hd-19@gated-at.bofh.it> (permalink) |
| References | <ti6kN-4hd-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Similar to CONFIG_DEBUG_CREDENTIALS, CONFIG_DEBUG_SG already handles calling BUG, and performs inexpensive checks. This enables it under CONFIG_BUG_ON_DATA_CORRUPTION. Signed-off-by: Kees Cook <keescook@chromium.org> --- lib/Kconfig.debug | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 009d6f8c7e5a..42c61cfe7d19 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1267,7 +1267,7 @@ config DEBUG_PI_LIST config DEBUG_SG bool "Debug SG table operations" - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL || BUG_ON_DATA_CORRUPTION help Enable this to turn on checks on scatter-gather tables. This can help find problems with drivers that do not properly initialize @@ -1995,6 +1995,7 @@ config BUG_ON_DATA_CORRUPTION bool "Trigger a BUG when data corruption is detected" select DEBUG_CREDENTIALS select DEBUG_LIST + select DEBUG_SG help This option enables several inexpensive data corruption checks. Most of these checks normally just WARN and try to further avoid -- 2.7.4
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[PATCH 0/6] bug: further enhance use of BUG_ON_DATA_CORRUPTION Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100 [PATCH 4/6] bug: Enable DEBUG_SG under BUG_ON_DATA_CORRUPTION Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100 [PATCH 5/6] notifiers: Use CHECK_DATA_CORRUPTION() on checks Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100 [PATCH 3/6] bug: Enable DEBUG_CREDENTIALS under BUG_ON_DATA_CORRUPTION Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100 [PATCH 1/6] bug: Clarify help text for BUG_ON_DATA_CORRUPTION Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100 [PATCH 2/6] bug: Improve unlikely() in data corruption check Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100 [PATCH 6/6] refcount: Check bad states with CHECK_DATA_CORRUPTION Kees Cook <keescook@chromium.org> - 2017-03-06 20:20 +0100
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