[#LU-945] Unverified user buffer access in lprocfs_wr_evict

[LU-945] Unverified user buffer access in lprocfs_wr_evict_client Created: 20/Dec/11 Updated: 29/May/17 Resolved: 29/May/17
Status:	Resolved
Project:	Lustre
Component/s:	None
Affects Version/s:	Lustre 2.1.0, Lustre 2.2.0, Lustre 1.8.6
Fix Version/s:	None

Type:

Bug

Priority:

Minor

Reporter:

Oleg Drokin

Assignee:

WC Triage

Resolution:

Fixed

Votes:

Labels:

None

Issue Links:

Duplicate
duplicates	~~LU-2222~~	Restore Evict by NID Functionality on...	Resolved
Related
is related to	~~LU-985~~	buffer overflow resulting in stack co...	Resolved

Severity:

Rank (Obsolete):

10754

Description

The lprocfs_wr_evict_client accessed unverified user buffer which is a big no-no.

We should verify that the buffer is ok (atomically with copying) and also make sure the provided string length is big enough.

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