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(parent: eeb97c3) | patch
random: fix possible sleeping allocation from irq context
authorTheodore Ts'o <tytso@mit.edu>
Mon, 23 Apr 2018 22:51:28 +0000 (18:51 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Tue, 24 Apr 2018 16:00:08 +0000 (12:00 -0400)
commitf11bf52c22cd4719edffc47ec397352887e42dab
tree0762f3b03339b0ab30f3163ab0ac314b75f05d02tree | snapshot
parenteeb97c3819106e04bc13d1c4dd30f52a9d9c5d22commit | diff
random: fix possible sleeping allocation from irq context

We can do a sleeping allocation from an irq context when CONFIG_NUMA
is enabled.  Fix this by initializing the NUMA crng instances in a
workqueue.

Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot+9de458f6a5e713ee8c1a@syzkaller.appspotmail.com
Fixes: 80048fd7345e4355 ("random: set up the NUMA crng instances...")
Cc: stable@vger.kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
drivers/char/random.c diff | blob | history
Linux Kernel Source Tree.