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| author | Tetsuo Handa | 2018-09-07 18:42:58 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2018-12-01 09:37:27 +0100 |
| commit | 3962e78a9fcb881d3865eba7faf51536e062ccf8 (patch) | |
| tree | 34af9f1c521a435dc29e0dccc3404bfa543c9911 /security | |
| parent | v9fs_dir_readdir: fix double-free on p9stat_read error (diff) | |
| download | kernel-qcow2-linux-3962e78a9fcb881d3865eba7faf51536e062ccf8.tar.gz kernel-qcow2-linux-3962e78a9fcb881d3865eba7faf51536e062ccf8.tar.xz kernel-qcow2-linux-3962e78a9fcb881d3865eba7faf51536e062ccf8.zip | |
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 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; |