kernel/tools/testing/selftests/powerpc/mm/stack_expansion_signal.c, branch linux-6.2.y Hosts the 0x221E linux distro kernel. https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-6.2.y 2020-07-29T11:02:11Z selftests/powerpc: Add test of stack expansion logic 2020-07-29T11:02:11Z Michael Ellerman mpe@ellerman.id.au 2020-07-24T09:25:24Z urn:sha1:c9938a9dac95be7650218cdd8e9d1f882e7b5691 We have custom stack expansion checks that it turns out are extremely badly tested and contain bugs, surprise. So add some tests that exercise the code and capture the current boundary conditions. The signal test currently fails on 64-bit kernels because the 2048 byte allowance for the signal frame is too small, we will fix that in a subsequent patch. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200724092528.1578671-1-mpe@ellerman.id.au