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livepatch: kernel: add TAINT_LIVEPATCH

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This adds a new taint flag to indicate when the kernel or a kernel
module has been live patched.  This will provide a clean indication in
bug reports that live patching was used.

Additionally, if the crash occurs in a live patched function, the live
patch module will appear beside the patched function in the backtrace.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Petr Mladek <pmladek@suse.cz>
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Seth Jennings 2014-12-16 11:58:18 -06:00 • committed by Jiri Kosina
parent 97bf6af1f9
commit c5f4546593
4 changed files with 6 additions and 0 deletions
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1
include/linux/kernel.h
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@ -471,6 +471,7 @@ extern enum system_states {
#define TAINT_OOT_MODULE 12
#define TAINT_UNSIGNED_MODULE 13
#define TAINT_SOFTLOCKUP 14
#define TAINT_LIVEPATCH 15
extern const char hex_asc[];
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]