On Fri 2018-05-11 20:02:31, Tetsuo Handa wrote: > >From 766cf72b5fdc00d1cf5a8ca2c6b23ebb75e2b4d4 Mon Sep 17 00:00:00 2001 > From: Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp> > Date: Fri, 11 May 2018 19:54:19 +0900 > Subject: [PATCH] printk: fix possible reuse of va_list variable > > I noticed that there is a possibility that printk_safe_log_store() causes > kernel oops because "args" parameter is passed to vsnprintf() again when > atomic_cmpxchg() detected that we raced. Fix this by using va_copy().
Great catch! Reviewed-by: Petr Mladek <pmla...@suse.com> I have tagged it for stable and pushed into printk.git, branch for-4.18, see https://git.kernel.org/pub/scm/linux/kernel/git/pmladek/printk.git/commit/?h=for-4.18&id=988a35f8da1dec5a8cd2788054d1e717be61bf25 Best Regards, Petr
