| author | Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> | 2018-09-07 16:42:58 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-01 08:44:18 (GMT) |
| commit | 47ff7629822ee2e1767f9c2886a47b1b075549f5 (patch) | |
| tree | 4cea69bde0d9c07ce261b03e9d4f0220dfbbee3c | |
| parent | 3a0e8e3587454c5f1c02b8450a4b71e517a7a1be (diff) | |
| download | common-47ff7629822ee2e1767f9c2886a47b1b075549f5.zip common-47ff7629822ee2e1767f9c2886a47b1b075549f5.tar.gz common-47ff7629822ee2e1767f9c2886a47b1b075549f5.tar.bz2 | |
selinux: Add __GFP_NOWARN to allocation at str_read()
commit 4458bba09788e70e8fb39ad003f087cd9dfbd6ac upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 d719db4..175e4dc 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -1097,7 +1097,7 @@ 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; |