On Tue, 06 Aug 2024 21:49:26 +0000, jeffxu@xxxxxxxxxxxx wrote: > From: Jeff Xu <jeffxu@xxxxxxxxxxxx> > > In load_elf_binary as part of the execve(), when the current > task’s personality has MMAP_PAGE_ZERO set, the kernel allocates > one page at address 0. According to the comment: > > /* Why this, you ask??? Well SVr4 maps page 0 as read-only, > and some applications "depend" upon this behavior. > Since we do not have the power to recompile these, we > emulate the SVr4 behavior. Sigh. */ > > [...] I added the cover letter details to the commit log and changed pr_warn() to pr_warn_ratelimited(), but otherwise, looked good. Applied to for-next/execve, thanks! [1/1] binfmt_elf: mseal address zero https://git.kernel.org/kees/c/44f65d900698 Take care, -- Kees Cook