Re: [PATCH] rds: fix crash in rds_info_getsockopt()

From: santosh . shilimkar
Date: Wed May 20 2020 - 15:45:58 EST


On 5/20/20 12:41 PM, John Hubbard wrote:
The conversion to pin_user_pages() had a bug: it overlooked
the case of allocation of pages failing. Fix that by restoring
an equivalent check.

Reported-by: syzbot+118ac0af4ac7f785a45b@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: dbfe7d74376e ("rds: convert get_user_pages() --> pin_user_pages()")

Cc: David S. Miller <davem@xxxxxxxxxxxxx>
Cc: Jakub Kicinski <kuba@xxxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Cc: linux-rdma@xxxxxxxxxxxxxxx
Cc: rds-devel@xxxxxxxxxxxxxx
Signed-off-by: John Hubbard <jhubbard@xxxxxxxxxx>
---
Thanks John !!

Acked-by: Santosh Shilimkar <santosh.shilimkar@xxxxxxxxxx>