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H A Dtarget_core_user.c9d7464b1 Sat May 23 05:11:29 CDT 2020 Dan Carpenter <dan.carpenter@oracle.com> scsi: target: tcmu: Fix a use after free in tcmu_check_expired_queue_cmd()

The pr_debug() dereferences "cmd" after we already freed it by calling
tcmu_free_cmd(cmd). The debug printk needs to be done earlier.

Link: https://lore.kernel.org/r/20200523101129.GB98132@mwanda
Fixes: 61fb24822166 ("scsi: target: tcmu: Userspace must not complete queued commands")
Reviewed-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
9d7464b1 Sat May 23 05:11:29 CDT 2020 Dan Carpenter <dan.carpenter@oracle.com> scsi: target: tcmu: Fix a use after free in tcmu_check_expired_queue_cmd()

The pr_debug() dereferences "cmd" after we already freed it by calling
tcmu_free_cmd(cmd). The debug printk needs to be done earlier.

Link: https://lore.kernel.org/r/20200523101129.GB98132@mwanda
Fixes: 61fb24822166 ("scsi: target: tcmu: Userspace must not complete queued commands")
Reviewed-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>