From: Borislav Petkov <bp@xxxxxxx> Subject: kernel/panic.c: add TAINT_AUX This is the gist of a patch which we've been forward-porting in our kernels for a long time now and it probably would make a good sense to have such TAINT_AUX flag upstream which can be used by each distro etc, how they see fit. This way, we won't need to forward-port a distro-only version indefinitely. Add an auxiliary taint flag to be used by distros and others. This obviates the need to forward-port whatever internal solutions people have in favor of a single flag which they can map arbitrarily to a definition of their pleasing. The "X" mnemonic could also mean eXternal, which would be taint from a distro or something else but not the upstream kernel. We will use it to mark modules for which we don't provide support. I.e., a really eXternal module. Link: http://lkml.kernel.org/r/20170911134533.dp5mtyku5bongx4c@xxxxxxx Signed-off-by: Borislav Petkov <bp@xxxxxxx> Cc: Kees Cook <keescook@xxxxxxxxxxxx> Cc: Jessica Yu <jeyu@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Jiri Slaby <jslaby@xxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Michal Marek <mmarek@xxxxxxx> Cc: Jiri Kosina <jkosina@xxxxxxx> Cc: Takashi Iwai <tiwai@xxxxxxx> Cc: Petr Mladek <pmladek@xxxxxxxx> Cc: Jeff Mahoney <jeffm@xxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/kernel.h | 3 ++- kernel/panic.c | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff -puN include/linux/kernel.h~kernel-panic-add-taint_aux include/linux/kernel.h --- a/include/linux/kernel.h~kernel-panic-add-taint_aux +++ a/include/linux/kernel.h @@ -549,7 +549,8 @@ extern enum system_states { #define TAINT_UNSIGNED_MODULE 13 #define TAINT_SOFTLOCKUP 14 #define TAINT_LIVEPATCH 15 -#define TAINT_FLAGS_COUNT 16 +#define TAINT_AUX 16 +#define TAINT_FLAGS_COUNT 17 struct taint_flag { char c_true; /* character printed when tainted */ diff -puN kernel/panic.c~kernel-panic-add-taint_aux kernel/panic.c --- a/kernel/panic.c~kernel-panic-add-taint_aux +++ a/kernel/panic.c @@ -324,6 +324,7 @@ const struct taint_flag taint_flags[TAIN { 'E', ' ', true }, /* TAINT_UNSIGNED_MODULE */ { 'L', ' ', false }, /* TAINT_SOFTLOCKUP */ { 'K', ' ', true }, /* TAINT_LIVEPATCH */ + { 'X', ' ', true }, /* TAINT_AUX */ }; /** @@ -345,6 +346,7 @@ const struct taint_flag taint_flags[TAIN * 'E' - Unsigned module has been loaded. * 'L' - A soft lockup has previously occurred. * 'K' - Kernel has been live patched. + * 'X' - Auxiliary taint, for distros' use. * * The string is overwritten by the next call to print_tainted(). */ _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
