Re: [RFC v2 1/5] mm/migrate: fix do_pages_move for compat pointers
From: "Arnd Bergmann" <arnd@arndb.de>
Date: 2023-09-20 09:37:12
Also in:
linux-arch, linux-cxl, lkml
On Tue, Sep 19, 2023, at 19:09, Gregory Price wrote:
do_pages_move does not handle compat pointers for the page list. correctly. Add in_compat_syscall check and appropriate get_user fetch when iterating the page list. Signed-off-by: Gregory Price <redacted> Reported-by: Arnd Bergmann <arnd@arndb.de> Co-developed-by: Arnd Bergmann <arnd@arndb.de>
Looks correct to me, thanks for fixing it!
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
You can also blame me for breaking it in the first place
Fixes: 5b1b561ba73c ("mm: simplify compat_sys_move_pages")
Arnd