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authorKees Cook <keescook@chromium.org>2019-09-25 16:48:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-25 17:51:40 -0700
commitd38aba49a9f72b862f1220739ca837c886fdc319 (patch)
tree5fbd7c166348c540777455a66c26635c8cde4c75 /kernel
parentf2f84b05e02b7710a201f0017b3272ad7ef703d1 (diff)
downloadlinux-d38aba49a9f72b862f1220739ca837c886fdc319.tar.gz
bug: lift "cut here" out of __warn()
In preparation for cleaning up "cut here", move the "cut here" logic up out of __warn() and into callers that pass non-NULL args. For anyone looking closely, there are two callers that pass NULL args: one already explicitly prints "cut here". The remaining case is covered by how a WARN is built, which will be cleaned up in the next patch. Link: http://lkml.kernel.org/r/20190819234111.9019-5-keescook@chromium.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@suse.de> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Drew Davenport <ddavenport@chromium.org> Cc: Feng Tang <feng.tang@intel.com> Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/panic.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/panic.c b/kernel/panic.c
index 79c153951b59..a643e5464296 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -559,9 +559,6 @@ void __warn(const char *file, int line, void *caller, unsigned taint,
{
disable_trace_on_warning();
- if (args)
- pr_warn(CUT_HERE);
-
if (file)
pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pS\n",
raw_smp_processor_id(), current->pid, file, line,
@@ -605,8 +602,9 @@ void warn_slowpath_fmt(const char *file, int line, unsigned taint,
{
struct warn_args args;
+ pr_warn(CUT_HERE);
+
if (!fmt) {
- pr_warn(CUT_HERE);
__warn(file, line, __builtin_return_address(0), taint,
NULL, NULL);
return;