After debugging an oops (https://bugzilla.redhat.com/attachment.cgi?id=209231)
I find it happens here in socket.c::sock_ioctl() line 902:
default:
=============> err = sock->ops->ioctl(sock, cmd, arg);
/*
* If this ioctl is unknown try to hand it down
* to the NIC driver.
*/
if (err == -ENOIOCTLCMD)
err = dev_ioctl(cmd, argp);
break;
ioctl is NULL and the kernel jumps to address 0. Should we add a check
for that?
Bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=306801
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