ibdiag_sa: Fix memory leak in sa_query() #1602
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When realloc() fails on line 142 of infiniband-diags/ibdiag_sta. c, it will cause the loss of the umad's original memory reference, resulting in a leak of the original memory. The modified logic is to store the result in a temporary variable new_umad before calling realloc, which can avoid directly overwriting the original pointer umad and prevent losing the reference to the original memory when realloc fails. Signed-off-by: daiyanlong <daiyanlong@kylinos.cn>
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When realloc() fails on line 142 of infiniband-diags/ibdiag_sta. c, it will cause the loss of the umad's original memory reference, resulting in a leak of the original memory.
The modified logic is to store the result in a temporary variable new_umad before calling realloc, which can avoid directly overwriting the original pointer umad and prevent losing the reference to the original memory when realloc fails.