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Commit 0afa9964 authored by Jeff Moyer's avatar Jeff Moyer Committed by Al Viro
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aio: fix spectre gadget in lookup_ioctx



Matthew pointed out that the ioctx_table is susceptible to spectre v1,
because the index can be controlled by an attacker.  The below patch
should mitigate the attack for all of the aio system calls.

Reported-by: default avatarMatthew Wilcox <willy@infradead.org>
Signed-off-by: default avatarJeff Moyer <jmoyer@redhat.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 73116df7
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