--- Documentation/mm/vmalloced-kernel-stacks.rst | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/Documentation/mm/vmalloced-kernel-stacks.rst b/Documentation/mm/vmalloced-kernel-stacks.rst index fc8c67833..b4ca3176e 100644 --- a/Documentation/mm/vmalloced-kernel-stacks.rst +++ b/Documentation/mm/vmalloced-kernel-stacks.rst @@ -20,9 +20,9 @@ Introduction Kernel stack overflows are often hard to debug and make the kernel susceptible to exploits. Problems could show up at a later time making -it difficult to isolate and root-cause. +it difficult to pinpoint their root cause. -Virtually-mapped kernel stacks with guard pages causes kernel stack +Virtually mapped kernel stacks with guard pages cause kernel stack overflows to be caught immediately rather than causing difficult to diagnose corruptions. @@ -57,7 +57,7 @@ enable this bool configuration option. The requirements are: VMAP_STACK ---------- -VMAP_STACK bool configuration option when enabled allocates virtually +When enabled, the VMAP_STACK bool configuration option allocates virtually mapped task stacks. This option depends on HAVE_ARCH_VMAP_STACK. - Enable this if you want the use virtually-mapped kernel stacks @@ -83,7 +83,7 @@ the latest code base: Allocation ----------- -When a new kernel thread is created, thread stack is allocated from +When a new kernel thread is created, a thread stack is allocated from virtually contiguous memory pages from the page level allocator. These pages are mapped into contiguous kernel virtual space with PAGE_KERNEL protections. @@ -104,7 +104,7 @@ with PAGE_KERNEL protections. Thread stack allocation is initiated from clone(), fork(), vfork(), kernel_thread() via kernel_clone(). Leaving a few hints for searching -the code base to understand when and how thread stack is allocated. +the code base to understand when and how a thread stack is allocated. Bulk of the code is in: `kernel/fork.c <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/fork.c>`. base-commit: e5b3efbe1ab1793bb49ae07d56d0973267e65112 -- 2.39.2
