Skip to content

aio: fix mremap after fork null-deref

Jeff Moyer requested to merge jmoyer1/centos-stream-9:guilt/bz2165730 into main

Merge Request Required Information

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2165730
Upstream Status: Posted https://lore.kernel.org/linux-fsdevel/x49sffq4nvg.fsf@segfault.boston.devel.redhat.com/T/#u

Summary of Changes

Commit e4a0d3e7 ("aio: Make it possible to remap aio ring") introduced a null-deref if mremap is called on an old aio mapping after fork as mm->ioctx_table will be set to NULL.

Signed-off-by: Jeff Moyer jmoyer@redhat.com

Edited by Jeff Moyer

Merge request reports