From: Eric W. Biederman Date: Tue, 24 Apr 2012 00:06:34 +0000 (-0700) Subject: userns: Make credential debugging user namespace safe. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c9235f4872e810d43bf1b19b92cdbe0ec282bada;p=linux-beck.git userns: Make credential debugging user namespace safe. Cc: David Howells Acked-by: Serge Hallyn Signed-off-by: Eric W. Biederman --- diff --git a/init/Kconfig b/init/Kconfig index 448b701b1722..fdabc5160cdf 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -936,7 +936,6 @@ config UIDGID_CONVERTED depends on FS_POSIX_ACL = n depends on QUOTA = n depends on QUOTACTL = n - depends on DEBUG_CREDENTIALS = n depends on BSD_PROCESS_ACCT = n depends on DRM = n depends on PROC_EVENTS = n diff --git a/kernel/cred.c b/kernel/cred.c index de728ac50d82..48cea3da6d05 100644 --- a/kernel/cred.c +++ b/kernel/cred.c @@ -799,9 +799,15 @@ static void dump_invalid_creds(const struct cred *cred, const char *label, atomic_read(&cred->usage), read_cred_subscribers(cred)); printk(KERN_ERR "CRED: ->*uid = { %d,%d,%d,%d }\n", - cred->uid, cred->euid, cred->suid, cred->fsuid); + from_kuid_munged(&init_user_ns, cred->uid), + from_kuid_munged(&init_user_ns, cred->euid), + from_kuid_munged(&init_user_ns, cred->suid), + from_kuid_munged(&init_user_ns, cred->fsuid)); printk(KERN_ERR "CRED: ->*gid = { %d,%d,%d,%d }\n", - cred->gid, cred->egid, cred->sgid, cred->fsgid); + from_kgid_munged(&init_user_ns, cred->gid), + from_kgid_munged(&init_user_ns, cred->egid), + from_kgid_munged(&init_user_ns, cred->sgid), + from_kgid_munged(&init_user_ns, cred->fsgid)); #ifdef CONFIG_SECURITY printk(KERN_ERR "CRED: ->security is %p\n", cred->security); if ((unsigned long) cred->security >= PAGE_SIZE &&