Re: [PATCH V3 2/5 selinux-next] selinux: Introduce selinux_ruleset struct

From: kbuild test robot
Date: Fri Jun 01 2018 - 09:49:22 EST


Hi Peter,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on pcmoore-selinux/next]
[also build test WARNING on v4.17-rc7]
[cannot apply to security/next next-20180531]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Peter-Enderborg/selinux-Make-allocation-atomic-in-policydb-objects-functions/20180601-205558
base: https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux.git next
config: i386-defconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All warnings (new ones prefixed by >>):

In file included from include/linux/printk.h:7:0,
from include/linux/kernel.h:14,
from security/selinux/ss/policydb.c:33:
security/selinux/ss/policydb.c: In function 'policydb_flattened_alloc':
>> include/linux/kern_levels.h:5:18: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'size_t {aka unsigned int}' [-Wformat=]
#define KERN_SOH "\001" /* ASCII Start Of Header */
^
include/linux/kern_levels.h:11:18: note: in expansion of macro 'KERN_SOH'
#define KERN_ERR KERN_SOH "3" /* error conditions */
^~~~~~~~
>> security/selinux/ss/policydb.c:3548:10: note: in expansion of macro 'KERN_ERR'
printk(KERN_ERR "SELinux: vmalloc failed for %ld\n", *size);
^~~~~~~~
security/selinux/ss/policydb.c:3548:50: note: format string is defined here
printk(KERN_ERR "SELinux: vmalloc failed for %ld\n", *size);
~~^
%d
--
In file included from include/linux/printk.h:7:0,
from include/linux/kernel.h:14,
from security//selinux/ss/policydb.c:33:
security//selinux/ss/policydb.c: In function 'policydb_flattened_alloc':
>> include/linux/kern_levels.h:5:18: warning: format '%ld' expects argument of type 'long int', but argument 2 has type 'size_t {aka unsigned int}' [-Wformat=]
#define KERN_SOH "\001" /* ASCII Start Of Header */
^
include/linux/kern_levels.h:11:18: note: in expansion of macro 'KERN_SOH'
#define KERN_ERR KERN_SOH "3" /* error conditions */
^~~~~~~~
security//selinux/ss/policydb.c:3548:10: note: in expansion of macro 'KERN_ERR'
printk(KERN_ERR "SELinux: vmalloc failed for %ld\n", *size);
^~~~~~~~
security//selinux/ss/policydb.c:3548:50: note: format string is defined here
printk(KERN_ERR "SELinux: vmalloc failed for %ld\n", *size);
~~^
%d

vim +/KERN_ERR +3548 security/selinux/ss/policydb.c

3538
3539 int policydb_flattened_alloc(struct policydb *db, void **tmpbuf, size_t *size)
3540 {
3541 int rc = 0;
3542
3543 *size = db->len;
3544 *tmpbuf = vmalloc(*size);
3545
3546 if (!*tmpbuf) {
3547 rc = -ENOMEM;
> 3548 printk(KERN_ERR "SELinux: vmalloc failed for %ld\n", *size);
3549 }
3550 return rc;
3551 }
3552

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