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| author | Mike Christie <michael.christie@oracle.com> | 2020-07-01 20:43:18 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-07-08 00:14:34 -0400 |
| commit | 3c006c7d23aac928279f7cbe83bbac4361255d53 (patch) | |
| tree | 18813c095e06d984d6ecee284ae5b8ff9d09b035 /drivers/target/target_core_transport.c | |
| parent | 63c9ffe473d3eb0910cadd35685c93c3edeff19f (diff) | |
| download | lwn-3c006c7d23aac928279f7cbe83bbac4361255d53.tar.gz lwn-3c006c7d23aac928279f7cbe83bbac4361255d53.zip | |
scsi: target: Fix xcopy sess release leak
transport_init_session can allocate memory via percpu_ref_init, and
target_xcopy_release_pt never frees it. This adds a
transport_uninit_session function to handle cleanup of resources allocated
in the init function.
Link: https://lore.kernel.org/r/1593654203-12442-3-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>
Diffstat (limited to 'drivers/target/target_core_transport.c')
| -rw-r--r-- | drivers/target/target_core_transport.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 90ecdd706a01..e6e1fa68de54 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -236,6 +236,11 @@ int transport_init_session(struct se_session *se_sess) } EXPORT_SYMBOL(transport_init_session); +void transport_uninit_session(struct se_session *se_sess) +{ + percpu_ref_exit(&se_sess->cmd_count); +} + /** * transport_alloc_session - allocate a session object and initialize it * @sup_prot_ops: bitmask that defines which T10-PI modes are supported. @@ -579,7 +584,7 @@ void transport_free_session(struct se_session *se_sess) sbitmap_queue_free(&se_sess->sess_tag_pool); kvfree(se_sess->sess_cmd_map); } - percpu_ref_exit(&se_sess->cmd_count); + transport_uninit_session(se_sess); kmem_cache_free(se_sess_cache, se_sess); } EXPORT_SYMBOL(transport_free_session); |