20 Aug
2022
20 Aug
'22
4:03 p.m.
On Fri, 19 Aug 2022, Pavel Machek wrote:
Hi!
From: Mikulas Patocka mpatocka@redhat.com
commit d17f744e883b2f8d13cca252d71cfe8ace346f7d upstream.
There's a KASAN warning in raid10_remove_disk when running the lvm test lvconvert-raid-reshape.sh. We fix this warning by verifying that the value "number" is valid.
BUG: KASAN: slab-out-of-bounds in raid10_remove_disk+0x61/0x2a0 [raid10] Read of size 8 at addr ffff889108f3d300 by task mdX_raid10/124682
Is this place for array_index_nospec?
Best regards, Pavel
Hi
I think it is not needed - userspace code can't trigger this code path at will.
Mikulas