f32ba612ef
__core_scsi3_add_registration clears the t10_pr_registration pr_reg_deve and does a core_scsi3_lunacl_undepend_item which does an undepend and also does a kref_put from the get done in __core_scsi3_alloc_registration. So when we get to the bottom of core_scsi3_decode_spec_i_port the pr_reg_deve is NULL and we crash when trying to access the local_pr_reg's pr_reg_deve. We've also done an extra undepend for local_pr_reg and if we didn't crash on the NULL we would have done an extra kref_put too. This patch has us do a core_scsi3_lunacl_depend_item for local_pr_reg and then let __core_scsi3_add_registration handle the cleanup for the pr_reg_deve. We then just skip the undepend for the acl and tpg for the local pr_reg. The error path then works in a similar way, but we always do the core_scsi3_lunacl_undepend_item since we never call __core_scsi3_add_registration in that code path. Link: https://lore.kernel.org/r/1593654203-12442-4-git-send-email-michael.christie@oracle.com Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.