Re: [PATCH 3/6] binfmt_elf: remove the set_fs(KERNEL_DS) in elf_core_dump

[Al Viro]

On Mon, Apr 06, 2020 at 02:03:09PM +0200, Christoph Hellwig wrote:
> There is no logic in elf_core_dump itself that uses uaccess routines
> on kernel pointers, the file writes are nicely encapsulated in dump_emit
> which does its own set_fs.

... assuming you've checked the asm/elf.h to see that nobody is playing
silly buggers in these forests of macros and the stuff called from those.
Which is a feat that ought to be mentioned in commit message...