On 1/3/19 5:52 AM, Sasha Levin wrote:

This commit has been processed because it contains a "Fixes:" tag, fixing commit: e8c24d3a23a4 x86/pkeys: Allocation/free syscalls.

The bot has tested the following trees: v4.20.0, v4.19.13, v4.14.91, v4.9.148,

v4.20.0: Build OK! v4.19.13: Build OK! v4.14.91: Build OK! v4.9.148: Failed to apply! Possible dependencies: c10e83f598d0 ("arch, mm: Allow arch_dup_mmap() to fail")

How should we proceed with this patch?

The 4.9 version of arch_dup_mmap() does not contain the ldt_dup_context() line. We just need to add arch_dup_pkeys(), like so:

void arch_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm) { + arch_dup_pkeys(oldmm, mm); paravirt_arch_dup_mmap(oldmm, mm); }

Should be a pretty simple merge. We can basically ignore the ldt_dup_context() changes.