Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'core-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull PASID fix from Thomas Gleixner:
"A single bugfix for the PASID management code, which freed the PASID
too early. The PASID needs to be tied to the mm lifetime, not to the
address space lifetime"
* tag 'core-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mm: Fix PASID use-after-free issue
+1
-1
+1
-1
kernel/fork.c
+1
-1
kernel/fork.c
···
792
792
mmu_notifier_subscriptions_destroy(mm);
793
793
check_mm(mm);
794
794
put_user_ns(mm->user_ns);
795
+
mm_pasid_drop(mm);
795
796
free_mm(mm);
796
797
}
797
798
EXPORT_SYMBOL_GPL(__mmdrop);
···
1191
1190
}
1192
1191
if (mm->binfmt)
1193
1192
module_put(mm->binfmt->module);
1194
-
mm_pasid_drop(mm);
1195
1193
mmdrop(mm);
1196
1194
}
1197
1195