mirror of https://gitee.com/openkylin/linux.git
UBIFS: fix oops on error path in read_pnode
Thanks to coverity which spotted that UBIFS will oops if 'kmalloc()' in 'read_pnode()' fails and we dereference a NULL 'pnode' pointer when we 'goto out'. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: stable@kernel.org
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@ -1270,10 +1270,9 @@ static int read_pnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip)
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lnum = branch->lnum;
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offs = branch->offs;
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pnode = kzalloc(sizeof(struct ubifs_pnode), GFP_NOFS);
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if (!pnode) {
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err = -ENOMEM;
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goto out;
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}
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if (!pnode)
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return -ENOMEM;
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if (lnum == 0) {
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/*
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* This pnode was not written which just means that the LEB
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