6e3b662d86
[ Upstream commit 26e28deb813eed908cf31a6052870b6493ec0e86 ] libiscsi calls the check_protection transport handler only if SCSI-Respose is received. So, the handler is never called if iSCSI task is completed for some other reason like a timeout or error handling. And this behavior looks correct. But the iSER does not handle this case properly because it puts a non-checked signature MR to the free pool. Then the error occurs at reusing the MR because it is not allowed to invalidate a signature MR without checking. This commit adds an extra check to iser_unreg_mem_fastreg(), which is a part of the task cleanup flow. Now the signature MR is checked there if it is needed. Link: https://lore.kernel.org/r/20200325151210.1548-1-sergeygo@mellanox.com Signed-off-by: Sergey Gorenko <sergeygo@mellanox.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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