Messages in this thread Patch in this message | | | Subject | Re: BUG: unable to handle kernel NULL pointer dereference in rds_send_xmit | From | Santosh Shilimkar <> | Date | Mon, 18 Dec 2017 08:28:05 -0800 |
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On 12/18/2017 12:43 AM, syzbot wrote: > Hello, > > syzkaller hit the following crash on > 6084b576dca2e898f5c101baef151f7bfdbb606d > git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/master > compiler: gcc (GCC) 7.1.1 20170620 > .config is attached > Raw console output is attached. > > Unfortunately, I don't have any reproducer for this bug yet. > > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 > program syz-executor6 is using a deprecated SCSI ioctl, please convert > it to SG_IO > IP: rds_send_xmit+0x80/0x930 net/rds/send.c:186
Looks like another one tripping on empty transport. Mostly below should address it but we will test it if it does.
diff --git a/net/rds/send.c b/net/rds/send.c index 7244d2e..e2d0eaa 100644 --- a/net/rds/send.c +++ b/net/rds/send.c @@ -183,7 +183,7 @@ int rds_send_xmit(struct rds_conn_path *cp) goto out; }
- if (conn->c_trans->xmit_path_prepare) + if (conn->c_trans && conn->c_trans->xmit_path_prepare) conn->c_trans->xmit_path_prepare(cp);
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