linux_dsm_epyc7002/drivers/target
Al Viro bf6932f44a iscsi-target: Drop bogus struct file usage for iSCSI/SCTP
From Al Viro:

	BTW, speaking of struct file treatment related to sockets -
        there's this piece of code in iscsi:
        /*
         * The SCTP stack needs struct socket->file.
         */
        if ((np->np_network_transport == ISCSI_SCTP_TCP) ||
            (np->np_network_transport == ISCSI_SCTP_UDP)) {
                if (!new_sock->file) {
                        new_sock->file = kzalloc(
                                        sizeof(struct file), GFP_KERNEL);

For one thing, as far as I can see it'not true - sctp does *not* depend on
socket->file being non-NULL; it does, in one place, check socket->file->f_flags
for O_NONBLOCK, but there it treats NULL socket->file as "flag not set".
Which is the case here anyway - the fake struct file created in
__iscsi_target_login_thread() (and in iscsi_target_setup_login_socket(), with
the same excuse) do *not* get that flag set.

Moreover, it's a bloody serious violation of a bunch of asserts in VFS;
all struct file instances should come from filp_cachep, via get_empty_filp()
(or alloc_file(), which is a wrapper for it).  FWIW, I'm very tempted to
do this and be done with the entire mess:

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andy Grover <agrover@redhat.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-07-21 02:44:13 -07:00
..
iscsi
loopback
sbp
tcm_fc
Kconfig
Makefile
target_core_alua.c
target_core_alua.h
target_core_configfs.c
target_core_device.c
target_core_fabric_configfs.c
target_core_fabric_lib.c
target_core_file.c
target_core_file.h
target_core_hba.c
target_core_iblock.c
target_core_iblock.h
target_core_internal.h
target_core_pr.c
target_core_pr.h
target_core_pscsi.c
target_core_pscsi.h
target_core_rd.c
target_core_rd.h
target_core_sbc.c
target_core_spc.c
target_core_stat.c
target_core_tmr.c
target_core_tpg.c
target_core_transport.c
target_core_ua.c
target_core_ua.h