android/android_kernel_xiaomi_sm8450
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taskstats: handle NULL nla case in taskstats2

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Avoid NULL dereference in taskstats2_foreach.

Fixes: 75aad5da3593 ("taskstats: add a option to send all tasks data to user")
Change-Id: I0c1860c003b73bcecee7a7c7db2939668517ac82
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
This commit is contained in:
Vinayak Menon 2019-08-16 14:04:33 +05:30 committed by Prakash Gupta
parent acffd6f45a
commit 262e96de91
1 changed files with 5 additions and 0 deletions
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5
kernel/taskstats.c
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@ -793,6 +793,10 @@ static int taskstats2_foreach(struct sk_buff *skb, struct netlink_callback *cb)
nla = nla_find(nlmsg_attrdata(cb->nlh, GENL_HDRLEN),
nlmsg_attrlen(cb->nlh, GENL_HDRLEN),
TASKSTATS_TYPE_FOREACH);
if (!nla)
goto out;
buf = nla_get_u32(nla);
oom_score_min = (short) (buf & 0xFFFF);
oom_score_max = (short) ((buf >> 16) & 0xFFFF);
@ -850,6 +854,7 @@ static int taskstats2_foreach(struct sk_buff *skb, struct netlink_callback *cb)
}
cb->args[0] = iter.tgid;
out:
return skb->len;
}