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| author | Daniel Kiss <daniel.kiss@arm.com> | 2020-03-16 16:50:54 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-03-16 17:19:50 +0000 |
| commit | 424037b77519d1537872442ba144dda1464988d7 (patch) | |
| tree | 5d79baec7fddee62da9dc29c75498fcb8244f1c9 /fs/proc | |
| parent | de48bb369242fe17022fab3a2addc9c6dacad43f (diff) | |
| download | linux-stable-424037b77519d1537872442ba144dda1464988d7.tar.gz linux-stable-424037b77519d1537872442ba144dda1464988d7.tar.bz2 linux-stable-424037b77519d1537872442ba144dda1464988d7.zip | |
mm: smaps: Report arm64 guarded pages in smaps
The arm64 Branch Target Identification support is activated by marking
executable pages as guarded pages. Report pages mapped this way in
smaps to aid diagnostics.
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Daniel Kiss <daniel.kiss@arm.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/task_mmu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 3ba9ae83bff5..1e3409c484d1 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -668,6 +668,9 @@ static void show_smap_vma_flags(struct seq_file *m, struct vm_area_struct *vma) [ilog2(VM_ARCH_1)] = "ar", [ilog2(VM_WIPEONFORK)] = "wf", [ilog2(VM_DONTDUMP)] = "dd", +#ifdef CONFIG_ARM64_BTI + [ilog2(VM_ARM64_BTI)] = "bt", +#endif #ifdef CONFIG_MEM_SOFT_DIRTY [ilog2(VM_SOFTDIRTY)] = "sd", #endif |