diff options
| author | Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> | 2018-09-08 01:42:58 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-01 09:42:50 +0100 |
| commit | 9520db16756e24873677d867a6a0f9cab3b6726d (patch) | |
| tree | 0102d7d2ea75f5563da44461ecaefb74435b6c6e /security | |
| parent | 335f31342699f9015f0ab5a8d41d6c911085f033 (diff) | |
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>
Diffstat (limited to 'security')
| -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 6e8c8056d7ad..6688ac5b991e 100644 --- a/security/selinux/ss/policydb.c +++ b/security/selinux/ss/policydb.c @@ -1099,7 +1099,7 @@ 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; |