# git rev-parse -q --verify e04ec0de61c1eb9693179093e83ab8ca68a30d08^{commit} e04ec0de61c1eb9693179093e83ab8ca68a30d08 already have revision, skipping fetch # git checkout -q -f -B kisskb e04ec0de61c1eb9693179093e83ab8ca68a30d08 # git clean -qxdf # < git log -1 # commit e04ec0de61c1eb9693179093e83ab8ca68a30d08 # Author: Daniel Jordan # Date: Mon Jun 8 17:26:52 2020 -0400 # # padata: upgrade smp_mb__after_atomic to smp_mb in padata_do_serial # # A 5.7 kernel hangs during a tcrypt test of padata that waits for an AEAD # request to finish. This is only seen on large machines running many # concurrent requests. # # The issue is that padata never serializes the request. The removal of # the reorder_objects atomic missed that the memory barrier in # padata_do_serial() depends on it. # # Upgrade the barrier from smp_mb__after_atomic to smp_mb to get correct # ordering again. # # Fixes: 3facced7aeed1 ("padata: remove reorder_objects") # Signed-off-by: Daniel Jordan # Cc: Steffen Klassert # Cc: linux-kernel@vger.kernel.org # Cc: # Signed-off-by: Herbert Xu # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 e04ec0de61c1eb9693179093e83ab8ca68a30d08 # < make -s -j 24 ARCH=powerpc O=/kisskb/build/crypto_ppc64_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc64_defconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/crypto_ppc64_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/crypto_ppc64_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/crypto_ppc64_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- Completed OK # rm -rf /kisskb/build/crypto_ppc64_defconfig_powerpc-gcc4.9 # Build took: 0:03:17.346448