Commit 48043657 authored by Tong Zhang's avatar Tong Zhang Committed by Zheng Zengkai
Browse files

net: macb: fix use after free on rmmod

stable inclusion
from stable-5.10.70
commit 7721221e87d25c9840d9ca6b986dbdc410d5ce2b
bugzilla: 182949 https://gitee.com/openeuler/kernel/issues/I4I3GQ

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=7721221e87d25c9840d9ca6b986dbdc410d5ce2b



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[ Upstream commit d82d5303 ]

plat_dev->dev->platform_data is released by platform_device_unregister(),
use of pclk and hclk is a use-after-free. Since device unregister won't
need a clk device we adjust the function call sequence to fix this issue.

[   31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci]
[   31.275563] Freed by task 306:
[   30.276782]  platform_device_release+0x25/0x80

Suggested-by: default avatarNicolas Ferre <Nicolas.Ferre@microchip.com>
Signed-off-by: default avatarTong Zhang <ztong0001@gmail.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
Signed-off-by: default avatarChen Jun <chenjun102@huawei.com>
Acked-by: default avatarWeilong Chen <chenweilong@huawei.com>

Signed-off-by: default avatarChen Jun <chenjun102@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent ed661675
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