Arnd Bergmann 8aa7285682 security: commoncap: fix -Wstringop-overread warning ... commit 82e5d8cc76 upstream. gcc-11 introdces a harmless warning for cap_inode_getsecurity: security/commoncap.c: In function ‘cap_inode_getsecurity’: security/commoncap.c:440:33: error: ‘memcpy’ reading 16 bytes from a region of size 0 [-Werror=stringop-overread] 440 | memcpy(&nscap->data, &cap->data, sizeof(__le32) * 2 * VFS_CAP_U32); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The problem here is that tmpbuf is initialized to NULL, so gcc assumes it is not accessible unless it gets set by vfs_getxattr_alloc(). This is a legitimate warning as far as I can tell, but the code is correct since it correctly handles the error when that function fails. Add a separate NULL check to tell gcc about it as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Signed-off-by: James Morris <jamorris@linux.microsoft.com> Cc: Andrey Zhizhikin <andrey.z@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-11 14:04:16 +02:00
..
apparmor	apparmor: ensure that dfa state tables have entries	2020-07-22 09:33:05 +02:00
integrity	integrity: double check iint_cache was initialized	2021-03-30 14:35:24 +02:00
keys	KEYS: trusted: Fix migratable=1 failing	2021-03-04 10:26:44 +01:00
loadpin
lockdown	lockdown: Allow unprivileged users to see lockdown status	2020-06-22 09:30:53 +02:00
safesetid
selinux	selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling	2020-12-30 11:51:05 +01:00
smack	smackfs: restrict bytes count in smackfs write functions	2021-03-07 12:20:42 +01:00
tomoyo	tomoyo: Use atomic_t for statistics counter	2020-02-05 21:22:41 +00:00
yama
commoncap.c	security: commoncap: fix -Wstringop-overread warning	2021-05-11 14:04:16 +02:00
device_cgroup.c	device_cgroup: Fix RCU list debugging warning	2020-10-01 13:18:13 +02:00
inode.c
Kconfig	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00
Kconfig.hardening
lsm_audit.c	dump_common_audit_data(): fix racy accesses to ->d_name	2021-01-19 18:26:16 +01:00
Makefile
min_addr.c
security.c	Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2019-09-28 08:14:15 -07:00