[PATCH 062/190] Revert "scsi: libfc: remove unnecessary assertion on ep variable"

Greg Kroah-Hartman
2021-04-21T13:04:59Z

This reverts commit 52b894393cecdc303990e834778d39b85d0553fc.

Commits from @umn.edu addresses have been found to be submitted in "bad
faith" to try to test the kernel community's ability to review "known
malicious" changes. The result of these submissions can be found in a
paper published at the 42nd IEEE Symposium on Security and Privacy
entitled, "Open Source Insecurity: Stealthily Introducing
Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
of Minnesota) and Kangjie Lu (University of Minnesota).

Because of this, all submissions from this group must be reverted from
the kernel tree and will need to be re-reviewed again to determine if
they actually are a valid fix. Until that work is complete, remove this
change to ensure that no problems are being introduced into the
codebase.

Cc: https
Cc: Hannes Reinecke <hare@suse.de>
Cc: Aditya Pakki <pakki001@umn.edu>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/target/tcm_fc/tfc_io.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/target/tcm_fc/tfc_io.c b/drivers/target/tcm_fc/tfc_io.c
index bbe2e29612fa..15d557a11f63 100644
--- a/drivers/target/tcm_fc/tfc_io.c
+++ b/drivers/target/tcm_fc/tfc_io.c
@@ -220,6 +220,7 @@ void ft_recv_write_data(struct ft_cmd *cmd, struct fc_frame *fp)
ep = fc_seq_exch(seq);
lport = ep->lp;
if (cmd->was_ddp_setup) {
+ BUG_ON(!ep);
BUG_ON(!lport);
/*
* Since DDP (Large Rx offload) was setup for this request,
--
2.31.1