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Documentation: English corrections in vmalloced kernel stacks

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Minor grammar fixes in vmalloced-kernel-stacks

Signed-off-by: Nir Lichtman <nir@lichtman.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240619215944.GA3571421@lichtman.org
This commit is contained in:
Nir Lichtman 2024-06-20 00:45:14 +03:00 • committed by Jonathan Corbet
parent ddb77059b2
commit 27a0781a31
1 changed files with 5 additions and 5 deletions
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10
Documentation/mm/vmalloced-kernel-stacks.rst
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@ -22,7 +22,7 @@ Kernel stack overflows are often hard to debug and make the kernel
susceptible to exploits. Problems could show up at a later time making susceptible to exploits. Problems could show up at a later time making
it difficult to isolate and root-cause. it difficult to isolate and 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 overflows to be caught immediately rather than causing difficult to
diagnose corruptions. diagnose corruptions.
@ -57,7 +57,7 @@ enable this bool configuration option. The requirements are:
VMAP_STACK 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. mapped task stacks. This option depends on HAVE_ARCH_VMAP_STACK.
- Enable this if you want the use virtually-mapped kernel stacks - Enable this if you want the use virtually-mapped kernel stacks
@ -83,7 +83,7 @@ the latest code base:
Allocation 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 virtually contiguous memory pages from the page level allocator. These
pages are mapped into contiguous kernel virtual space with PAGE_KERNEL pages are mapped into contiguous kernel virtual space with PAGE_KERNEL
protections. protections.
@ -103,8 +103,8 @@ with PAGE_KERNEL protections.
- This does not address interrupt stacks - according to the original patch - This does not address interrupt stacks - according to the original patch
Thread stack allocation is initiated from clone(), fork(), vfork(), Thread stack allocation is initiated from clone(), fork(), vfork(),
kernel_thread() via kernel_clone(). Leaving a few hints for searching kernel_thread() via kernel_clone(). These are 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: 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>`. `kernel/fork.c <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/fork.c>`.