Hello,

syzbot has tested the proposed patch and the reproducer did not trigger  
crash:

Reported-and-tested-by:  
syzbot+8ec30bb7bf1a981a2012@syzkaller.appspotmail.com

Note: the tag will also help syzbot to understand when the bug is fixed.

Tested on upstream commit
03fae44b41062419aedcf2ae4ad68034f440f862 (Wed Jan 24 18:08:16 2018 +0000)
Merge tag 'trace-v4.15-rc9' of  
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

compiler: gcc (GCC) 7.1.1 20170620
Patch is attached.
Kernel config is attached.


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