linux.git/drivers/target/target_core_pr.c, branch v6.0

scsi: target: core: De-RCU of se_lun and se_lun acl

2022-08-01T23:36:02+00:00

se_lun and se_lun_acl are immutable pointers of struct se_dev_entry.
Remove RCU usage for access to those pointers.

Link: https://lore.kernel.org/r/20220727214125.19647-3-d.bogdanov@yadro.com
Reviewed-by: Mike Christie 
Signed-off-by: Dmitry Bogdanov 
Signed-off-by: Martin K. Petersen

scsi: target: Fix spelling mistake "CONFLIFT" -> "CONFLICT"

2021-09-22T04:17:29+00:00

There is a spelling mistake in a dev_err message. Fix it.

Link: https://lore.kernel.org/r/20210920183206.17477-1-colin.king@canonical.com
Signed-off-by: Colin Ian King 
Signed-off-by: Martin K. Petersen

scsi: target: Use standard SAM status types

2021-06-01T02:48:24+00:00

target_complete_cmd() and friends requires a SAM status type, so passing
GOOD here is actually wrong.

Link: https://lore.kernel.org/r/20210427083046.31620-40-hare@suse.de
Reviewed-by: Bart Van Assche 
Signed-off-by: Hannes Reinecke 
Signed-off-by: Martin K. Petersen

scsi: target: Fix two format specifiers

2021-04-16T02:44:41+00:00

Use format specifier '%u' to format the u32 data type instead of '%hu'.

Link: https://lore.kernel.org/r/20210415220826.29438-19-bvanassche@acm.org
Cc: Mike Christie 
Reviewed-by: Mike Christie 
Signed-off-by: Bart Van Assche 
Signed-off-by: Martin K. Petersen

scsi: target: core: pr: Initialize arrays at declaration time

2021-03-10T04:47:18+00:00

Avoids calling memset().

Link: https://lore.kernel.org/r/20210228055645.22253-21-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-22-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-23-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie 
Reviewed-by: Johannes Thumshirn 
Signed-off-by: Chaitanya Kulkarni 
Signed-off-by: Martin K. Petersen

scsi: target: core: Prevent underflow for service actions

2021-02-23T03:21:29+00:00

TCM buffer length doesn't necessarily equal 8 + ADDITIONAL LENGTH which
might be considered an underflow in case of Data-In size being greater than
8 + ADDITIONAL LENGTH. So truncate buffer length to prevent underflow.

Link: https://lore.kernel.org/r/20210209072202.41154-3-a.miloserdov@yadro.com
Reviewed-by: Roman Bolshakov 
Reviewed-by: Bodo Stroesser 
Signed-off-by: Aleksandr Miloserdov 
Signed-off-by: Martin K. Petersen

scsi: target: core: Fix fall-through warnings for Clang

2020-12-02T17:59:47+00:00

In preparation to enable -Wimplicit-fallthrough for Clang, fix a couple of
warnings by explicitly adding a break statement and a fallthrough
pseudo-keyword instead of letting the code fall through to the next case.

Link: https://github.com/KSPP/linux/issues/115
Link: https://lore.kernel.org/r/761d6f755e8a6f8a6daebd1e5c1394167e5c780a.1605896059.git.gustavoars@kernel.org
Signed-off-by: Gustavo A. R. Silva 
Signed-off-by: Martin K. Petersen

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59+00:00

Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva

scsi: target: Remove unused variable 'tpg'

2020-07-14T03:11:15+00:00

Gcc reports warning as follows:

drivers/target/target_core_pr.c:1162:26: warning:
 variable 'tpg' set but not used [-Wunused-but-set-variable]
 1162 |  struct se_portal_group *tpg;
      |                          ^~~

After commit 63c9ffe473d3 ("scsi: target: Check enforce_pr_isids during
registration"), 'tpg' is never used. Remove it to avoid build warning.

Link: https://lore.kernel.org/r/20200709114636.69256-1-weiyongjun1@huawei.com
Reported-by: Hulk Robot 
Reviewed-by: Chaitanya Kulkarni 
Reviewed-by: Himanshu Madhani 
Reviewed-by: Mike Christie 
Signed-off-by: Wei Yongjun 
Signed-off-by: Martin K. Petersen

scsi: target: Fix crash during SPEC_I_PT handling

2020-07-08T04:14:34+00:00

__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 
Signed-off-by: Martin K. Petersen