diff options
| author | Joern Engel <joern@logfs.org> | 2013-05-13 16:30:06 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-19 11:38:43 -0700 |
| commit | 114b8afe93aa6bf9ffd97874643e7f8485865012 (patch) | |
| tree | cc749558db6fb0efc7279b459848d3d03a644a06 /include/uapi | |
| parent | c597f2a40780026e4574e02e05296e22ad84c58f (diff) | |
target: close target_put_sess_cmd() vs. core_tmr_abort_task() race
commit ccf5ae83a6cf3d9cfe9a7038bfe7cd38ab03d5e1 upstream.
It is possible for one thread to to take se_sess->sess_cmd_lock in
core_tmr_abort_task() before taking a reference count on
se_cmd->cmd_kref, while another thread in target_put_sess_cmd() drops
se_cmd->cmd_kref before taking se_sess->sess_cmd_lock.
This introduces kref_put_spinlock_irqsave() and uses it in
target_put_sess_cmd() to close the race window.
Signed-off-by: Joern Engel <joern@logfs.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi')
0 files changed, 0 insertions, 0 deletions