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authorJamie Bainbridge <jamie.bainbridge@gmail.com>2015-11-07 13:13:49 +0100
committerSteve French <sfrench@localhost.localdomain>2016-01-14 20:39:02 +0100
commitec7147a99e33a9e4abad6fc6e1b40d15df045d53 (patch)
tree0bb16e11803e1136004e2077161ad65861f537bb /fs/cifs/cifs_debug.c
parentMerge tag 'xfs-for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff)
downloadlinux-ec7147a99e33a9e4abad6fc6e1b40d15df045d53.tar.xz
linux-ec7147a99e33a9e4abad6fc6e1b40d15df045d53.zip
cifs: Ratelimit kernel log messages
Under some conditions, CIFS can repeatedly call the cifs_dbg() logging wrapper. If done rapidly enough, the console framebuffer can softlockup or "rcu_sched self-detected stall". Apply the built-in log ratelimiters to prevent such hangs. Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com> CC: Stable <stable@vger.kernel.org>
Diffstat (limited to 'fs/cifs/cifs_debug.c')
-rw-r--r--fs/cifs/cifs_debug.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 7febcf2475c5..50b268483302 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -50,7 +50,7 @@ void cifs_vfs_err(const char *fmt, ...)
vaf.fmt = fmt;
vaf.va = &args;
- pr_err("CIFS VFS: %pV", &vaf);
+ pr_err_ratelimited("CIFS VFS: %pV", &vaf);
va_end(args);
}