Messages in this thread | | | From | Linus Torvalds <> | Date | Thu, 30 Apr 2020 06:47:41 -0700 | Subject | Re: [GIT PULL] Please pull proc and exec work for 5.7-rc1 |
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On Thu, Apr 30, 2020 at 6:39 AM Bernd Edlinger <bernd.edlinger@hotmail.de> wrote: > > Excuse me, but what in my /proc folder there is no attr/something > is there a procfs equivalent of pthread_attach ? > > What exactly is "attr/something" ?
Anything that uses that proc_pid_attr_write().
Which you should have realized, since you wrote the patch that changed that function to return -EAGAIN.
That's
/proc/<pid>/attr/{current,exec,fscreate,keycreate,prev,sockcreate}
and some smack files.
Your patch definitely made them return -EINVAL if they happen in that execve() black hole, instead of waiting for the execve() to just complete and then just work.
Dropping a lock really is broken. It';s broken even if you then set a flag saying "I dropped the lock, now you can't use it".
Linus
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