When adding new feature support, patches need to be incrementally applied and tested with temporal parameters. For such testing (or root-only) purposes, the new flag will serve to tag the kernel taint state properly.
Suggested-by: H. Peter Anvin <[email protected]> Signed-off-by: Chang S. Bae <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Andi Kleen <[email protected]> Cc: Dave Hansen <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> --- Documentation/sysctl/kernel.txt | 1 + include/linux/kernel.h | 3 ++- kernel/panic.c | 1 + 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt index eded671d..06c4009 100644 --- a/Documentation/sysctl/kernel.txt +++ b/Documentation/sysctl/kernel.txt @@ -992,6 +992,7 @@ ORed together. The letters are seen in "Tainted" line of Oops reports. 32768 (K): The kernel has been live patched. 65536 (X): Auxiliary taint, defined and used by for distros. 131072 (T): The kernel was built with the struct randomization plugin. +262144 (Z): The kernel is running in a known insecure configuration. ============================================================== diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 6a1eb0b..7051415 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -563,7 +563,8 @@ extern enum system_states { #define TAINT_LIVEPATCH 15 #define TAINT_AUX 16 #define TAINT_RANDSTRUCT 17 -#define TAINT_FLAGS_COUNT 18 +#define TAINT_INSECURE 18 +#define TAINT_FLAGS_COUNT 19 struct taint_flag { char c_true; /* character printed when tainted */ diff --git a/kernel/panic.c b/kernel/panic.c index 42e4874..53ea36a 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -327,6 +327,7 @@ const struct taint_flag taint_flags[TAINT_FLAGS_COUNT] = { [ TAINT_LIVEPATCH ] = { 'K', ' ', true }, [ TAINT_AUX ] = { 'X', ' ', true }, [ TAINT_RANDSTRUCT ] = { 'T', ' ', true }, + [ TAINT_INSECURE ] = { 'Z', ' ', false }, }; /** -- 2.7.4
