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bdev/iscsi: fix double spdk_bdev_module_finish_done() call

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bdev_iscsi_lun_cleanup() was not accounting for LUNs
getting cleaned up before the module_finish function
was called.  This resulted in the bdev/iscsi module
calling spdk_bdev_module_finish_done twice which
resulted in io_device_unregister not found errors and
possible seg faults.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I42c3e0af250e0abcea1cd88ffd3c041ebdaeea49
Reviewed-on: https://review.gerrithub.io/415372
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This commit is contained in:
Jim Harris 2018-06-14 10:26:00 -07:00 committed by Daniel Verkamp
parent 1a6d593345
commit 7717cfcacc
1 changed files with 8 additions and 1 deletions
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9
lib/bdev/iscsi/bdev_iscsi.c
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@ -63,6 +63,7 @@ static TAILQ_HEAD(, bdev_iscsi_lun) g_iscsi_lun_head = TAILQ_HEAD_INITIALIZER(g_
static TAILQ_HEAD(, bdev_iscsi_conn_req) g_iscsi_conn_req = TAILQ_HEAD_INITIALIZER(
g_iscsi_conn_req);
static struct spdk_poller *g_conn_poller = NULL;
static bool g_finish_in_process = false;
struct bdev_iscsi_io {
struct spdk_thread *submit_td;
@ -140,7 +141,7 @@ bdev_iscsi_lun_cleanup(struct bdev_iscsi_lun *lun)
TAILQ_REMOVE(&g_iscsi_lun_head, lun, link);
iscsi_destroy_context(lun->context);
iscsi_free_lun(lun);
if (TAILQ_EMPTY(&g_iscsi_lun_head)) {
if (TAILQ_EMPTY(&g_iscsi_lun_head) && g_finish_in_process) {
bdev_iscsi_finish_done();
spdk_bdev_module_finish_done();
}
@ -164,6 +165,12 @@ bdev_iscsi_finish(void)
{
struct bdev_iscsi_lun *lun, *tmp;
/*
* Set this flag so that bdev_iscsi_lun_cleanup knows it needs to mark
* the module finish as done when the TAILQ is not empty.
*/
g_finish_in_process = true;
if (TAILQ_EMPTY(&g_iscsi_lun_head)) {
bdev_iscsi_finish_done();
spdk_bdev_module_finish_done();