From: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> To avoid continued attempted use of a bad .sframe section, remove it on demand when the first sign of corruption is detected. Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx> Signed-off-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx> --- kernel/unwind/sframe.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/unwind/sframe.c b/kernel/unwind/sframe.c index b10420d19840..f246ead6c2a0 100644 --- a/kernel/unwind/sframe.c +++ b/kernel/unwind/sframe.c @@ -310,6 +310,10 @@ int sframe_find(unsigned long ip, struct unwind_user_frame *frame) ret = __find_fre(sec, &fde, ip, frame); end: user_read_access_end(); + + if (ret == -EFAULT) + WARN_ON_ONCE(sframe_remove_section(sec->sframe_start)); + return ret; } -- 2.50.1
