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(parent: d848e5f) | 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)
commit6c1e851c4edc13a43adb3ea4044e3fc8f43ccf7d
tree0762f3b03339b0ab30f3163ab0ac314b75f05d02tree | snapshot
parentd848e5f8e1ebdb227d045db55fe4f825e82965facommit | 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: 8ef35c866f8862df ("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
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