Subject: linux-next: build failure after merge of the integrity tree

From: Stephen Rothwell <[email-masked]>
Date: Tue, 7 Feb 2023 11:51:13 +1100

Hi all,

After merging the integrity tree, today's linux-next build (x86_64
allmodconfig) failed like this:

security/integrity/ima/ima_main.c: In function 'ima_file_mprotect':
security/integrity/ima/ima_main.c:473:34: error: implicit declaration of function 'file_mnt_user_ns'; did you mean 'get_user_ns'? [-Werror=implicit-function-declaration]
  473 |         action |= ima_get_action(file_mnt_user_ns(vma->vm_file), inode,
      |                                  ^~~~~~~~~~~~~~~~
      |                                  get_user_ns
security/integrity/ima/ima_main.c:473:34: error: passing argument 1 of 'ima_get_action' makes pointer from integer without a cast [-Werror=int-conversion]
  473 |         action |= ima_get_action(file_mnt_user_ns(vma->vm_file), inode,
      |                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                                  |
      |                                  int
In file included from security/integrity/ima/ima_main.c:30:
security/integrity/ima/ima.h:258:38: note: expected 'struct mnt_idmap *' but argument is of type 'int'
  258 | int ima_get_action(struct mnt_idmap *idmap, struct inode *inode,
      |                    ~~~~~~~~~~~~~~~~~~^~~~~
cc1: all warnings being treated as errors

Caused by commit

  4958db3245fa ("ima: Introduce MMAP_CHECK_REQPROT hook")

interacting with commit

  39f60c1ccee7 ("fs: port xattr to mnt_idmap")

from the vfs-idmapping tree.

I have applied the following merge fix patch for today.

From: Stephen Rothwell <[email-masked]>
Date: Tue, 7 Feb 2023 11:31:16 +1100
Subject: [PATCH] fixup for "ima: Introduce MMAP_CHECK_REQPROT hook"

interacting with "fs: port xattr to mnt_idmap"

Signed-off-by: Stephen Rothwell <[email-masked]>
---
 security/integrity/ima/ima_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 7a05af9f481f..d66a0a36415e 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -470,7 +470,7 @@ int ima_file_mprotect(struct vm_area_struct *vma, unsigned long prot)
 	action = ima_get_action(file_mnt_idmap(vma->vm_file), inode,
 				current_cred(), secid, MAY_EXEC, MMAP_CHECK,
 				&pcr, &template, NULL, NULL);
-	action |= ima_get_action(file_mnt_user_ns(vma->vm_file), inode,
+	action |= ima_get_action(file_mnt_idmap(vma->vm_file), inode,
 				 current_cred(), secid, MAY_EXEC,
 				 MMAP_CHECK_REQPROT, &pcr, &template, NULL,
 				 NULL);
-- 
2.35.1
x
-- 
Cheers,
Stephen Rothwell