From 5d54f948aaac4a6ab6b908af379103559a5a002c Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 22 Jan 2018 15:57:59 +0100 Subject: sysfs: turn WARN() into pr_warn() It's not good to crash the machine if panic_on_warn() is set just because someone made a stupid mistake of trying to create a sysfs file with the same name of an existing one. This makes the automated testing tools a lot harder to find the real bugs in the kernel. So just print a warning out and dump the stack to get the attention of the developer that they did something foolish. Then keep on trucking, as this should not be a fatal error at all. Reported-by: Dmitry Vyukov Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/dir.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'fs/sysfs') diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 2b67bda2021b..3a36a48a4b3f 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -10,6 +10,7 @@ * Please see Documentation/filesystems/sysfs.txt for more information. */ +#define pr_fmt(fmt) "sysfs: " fmt #undef DEBUG #include @@ -27,8 +28,8 @@ void sysfs_warn_dup(struct kernfs_node *parent, const char *name) if (buf) kernfs_path(parent, buf, PATH_MAX); - WARN(1, KERN_WARNING "sysfs: cannot create duplicate filename '%s/%s'\n", - buf, name); + pr_warn("cannot create duplicate filename '%s/%s'\n", buf, name); + dump_stack(); kfree(buf); } -- cgit v1.2.3-59-g8ed1b