diff options
| author |   Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> | 2018-09-08 01:42:58 +0900 |
|---|---|---|
| committer |   Paul Moore <paul@paul-moore.com> | 2018-09-13 15:36:25 -0400 |
| commit | 4458bba09788e70e8fb39ad003f087cd9dfbd6ac (patch) | |
| tree | 7b7cc06341a6e10d7632e578fed112c5a83c9741 /security/selinux | |
| parent | selinux: refactor mls_context_to_sid() and make it stricter (diff) | |
| download | linux-dev-4458bba09788e70e8fb39ad003f087cd9dfbd6ac.tar.xz linux-dev-4458bba09788e70e8fb39ad003f087cd9dfbd6ac.zip | |
selinux: Add __GFP_NOWARN to allocation at str_read()
syzbot is hitting warning at str_read() [1] because len parameter can
become larger than KMALLOC_MAX_SIZE. We don't need to emit warning for
this case.
[1] https://syzkaller.appspot.com/bug?id=7f2f5aad79ea8663c296a2eedb81978401a908f0
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Reported-by: syzbot <syzbot+ac488b9811036cea7ea0@syzkaller.appspotmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security/selinux')
| -rw-r--r-- | security/selinux/ss/policydb.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c index e9394e7adc84..f4eadd3f7350 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -1101,7 +1101,7 @@ static int str_read(char **strp, gfp_t flags, void *fp, u32 len) if ((len == 0) || (len == (u32)-1)) return -EINVAL; - str = kmalloc(len + 1, flags); + str = kmalloc(len + 1, flags | __GFP_NOWARN); if (!str) return -ENOMEM; |