[REPORT] Possible unnecessary usages of GFP_ATOMIC in crypto/ablkcipher.c

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My tool DCNS reports three unnecessary usages of GFP_ATOMIC in crypto/ablkcipher.c:
crypto/ablkcipher.c, 162: kmalloc(GFP_ATOMIC) in ablkcipher_next_slow
crypto/ablkcipher.c, 199: kmalloc(GFP_ATOMIC) in ablkcipher_copy_iv
crypto/ablkcipher.c, 315: kmalloc(GFP_ATOMIC) in setkey_unaligned

I meant to manually check the code, but I find that there are many functions calling ablkcipher_next_slow(), ablkcipher_copy_iv() and setkey_unaligned(), so I am not sure whether the above three reports are true.

Could someone help me to validate these reports?
Thanks a lot in advance :)


Best wishes,
Jia-Ju Bai




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