Messages in this thread Patch in this message | | | From | Souptick Joarder <> | Subject | [PATCH 1/2] tomoyo: Convert get_user_pages*() to pin_user_pages*() | Date | Sat, 7 Nov 2020 13:54:10 +0530 |
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In 2019, we introduced pin_user_pages*() and now we are converting get_user_pages*() to the new API as appropriate. [1] & [2] could be referred for more information. This is case 5 as per document [1].
[1] Documentation/core-api/pin_user_pages.rst
[2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Cc: John Hubbard <jhubbard@nvidia.com> --- security/tomoyo/domain.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/security/tomoyo/domain.c b/security/tomoyo/domain.c index dc4ecc0..bd748be 100644 --- a/security/tomoyo/domain.c +++ b/security/tomoyo/domain.c @@ -914,7 +914,7 @@ bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos, * (represented by bprm). 'current' is the process doing * the execve(). */ - if (get_user_pages_remote(bprm->mm, pos, 1, + if (pin_user_pages_remote(bprm->mm, pos, 1, FOLL_FORCE, &page, NULL, NULL) <= 0) return false; #else @@ -936,7 +936,7 @@ bool tomoyo_dump_page(struct linux_binprm *bprm, unsigned long pos, } /* Same with put_arg_page(page) in fs/exec.c */ #ifdef CONFIG_MMU - put_page(page); + unpin_user_page(page); #endif return true; } -- 1.9.1
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