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fs/ntfs3: Add check for kmemdup

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Since the kmemdup may return NULL pointer,
it should be better to add check for the return value
in order to avoid NULL pointer dereference.

Fixes: b46acd6a6a ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
This commit is contained in:
Jiasheng Jiang 2022-11-23 16:48:46 +08:00 committed by Konstantin Komarov
parent bfa434c601
commit e6c3cef24c
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1 changed files with 4 additions and 0 deletions
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fs/ntfs3/fslog.c
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@ -4256,6 +4256,10 @@ check_attribute_names:
rec_len -= t32;
attr_names = kmemdup(Add2Ptr(lrh, t32), rec_len, GFP_NOFS);
if (!attr_names) {
err = -ENOMEM;
goto out;
}
lcb_put(lcb);
lcb = NULL;