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(parent: aa497d4) | patch
powerpc/memcpy: Fix stack corruption for smaller sizes
authorSantosh Sivaraj <santosh@fossix.org>
Tue, 3 Sep 2019 21:43:58 +0000 (03:13 +0530)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 11 Sep 2019 23:27:00 +0000 (09:27 +1000)
commit20055a8bfaaa75f2cb9c23ecc8ab12b4abd8dc84
tree3d64b3e4bd6df2e322a47712bd65d72c46f77bb3tree | snapshot
parentaa497d4352414aad22e792b35d0aaaa12bbc37c5commit | diff
powerpc/memcpy: Fix stack corruption for smaller sizes

For sizes lesser than 128 bytes, the code branches out early without saving
the stack frame, which when restored later drops frame of the caller.

Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Santosh Sivaraj <santosh@fossix.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190903214359.23887-1-santosh@fossix.org
arch/powerpc/lib/memcpy_mcsafe_64.S diff | blob | history
Domain: System / Kernel;