The patch titled
Subject: kernel/panic.c: add TAINT_AUX
has been added to the -mm tree. Its filename is
kernel-panic-add-taint_aux.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kernel-panic-add-taint_aux.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kernel-panic-add-taint_aux.patch
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------------------------------------------------------
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
@@ -530,7 +530,8 @@ 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
@@ -322,6 +322,7 @@ const struct taint_flag taint_flags[TAIN
{ 'E', ' ', true }, /* TAINT_UNSIGNED_MODULE */
{ 'L', ' ', false }, /* TAINT_SOFTLOCKUP */
{ 'K', ' ', true }, /* TAINT_LIVEPATCH */
+ { 'X', ' ', true }, /* TAINT_AUX */
};
/**
@@ -343,6 +344,7 @@ 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().
*/
_
Patches currently in -mm which might be from bp@xxxxxxx are
kernel-panic-add-taint_aux.patch
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