Bug 4481 - hv_netvsc: Add check for kvmalloc_array
Summary: hv_netvsc: Add check for kvmalloc_array
Status: NEW
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: drivers (show other bugs) drivers
Version: 4.19-023.x
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: GuixinLiu
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-03-10 16:34 UTC by Wang-XiaoSong
Modified: 2023-03-10 16:34 UTC (History)
2 users (show)

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Description Wang-XiaoSong 2023-03-10 16:34:30 UTC 
As the potential failure of the kvmalloc_array(),
it should be better to check and restore the 'data'
if fails in order to avoid the dereference of the
NULL pointer.

Fixes: 6ae746711263 ("hv_netvsc: Add per-cpu ethtool stats for netvsc")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220314020125.2365084-1-jiasheng@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>