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lib/nvme: Remove qpair from all lists before freeing it.

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Fixes #1777.

When a qpair cannot be allocated because the transport connection fails,
the qpair was freed without unlinking it from the other structures.
This was leading to a segfault when attempting to create and free other
qpairs.
Also added a unit test to cover this case.

Signed-off-by: Vasuki Manikarnike <vasuki.manikarnike@hpe.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6272 (master)

(cherry picked from commit d92c2f118a)
Change-Id: I74b78d1847f90117248b07203b43a11ff5cfa5d6
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6393
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
This commit is contained in:
Vasuki Manikarnike 2021-02-04 15:54:37 +00:00 committed by Tomasz Zawadzki
parent e02a868dd3
commit 3f732d80d3
2 changed files with 26 additions and 0 deletions
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4
lib/nvme/nvme_ctrlr.c
View File

@ -418,8 +418,12 @@ spdk_nvme_ctrlr_alloc_io_qpair(struct spdk_nvme_ctrlr *ctrlr,
rc = spdk_nvme_ctrlr_connect_io_qpair(ctrlr, qpair);
if (rc != 0) {
SPDK_ERRLOG("nvme_transport_ctrlr_connect_io_qpair() failed\n");
nvme_robust_mutex_lock(&ctrlr->ctrlr_lock);
nvme_ctrlr_proc_remove_io_qpair(qpair);
TAILQ_REMOVE(&ctrlr->active_io_qpairs, qpair, tailq);
spdk_bit_array_set(ctrlr->free_io_qids, qpair->id);
nvme_transport_ctrlr_delete_io_qpair(ctrlr, qpair);
nvme_robust_mutex_unlock(&ctrlr->ctrlr_lock);
return NULL;
}

22
test/unit/lib/nvme/nvme_ctrlr.c/nvme_ctrlr_ut.c
View File

@ -2162,6 +2162,27 @@ test_nvme_ctrlr_init_set_keep_alive_timeout(void)
nvme_ctrlr_destruct(&ctrlr);
}
static void
test_alloc_io_qpair_fail(void)
{
struct spdk_nvme_ctrlr ctrlr = {};
struct spdk_nvme_qpair *q0;
setup_qpairs(&ctrlr, 1);
/* Modify the connect_qpair return code to inject a failure */
g_connect_qpair_return_code = 1;
/* Attempt to allocate a qpair, this should fail */
q0 = spdk_nvme_ctrlr_alloc_io_qpair(&ctrlr, NULL, 0);
SPDK_CU_ASSERT_FATAL(q0 == NULL);
/* Verify that the qpair is removed from the lists */
SPDK_CU_ASSERT_FATAL(TAILQ_EMPTY(&ctrlr.active_io_qpairs));
cleanup_qpairs(&ctrlr);
}
int main(int argc, char **argv)
{
CU_pSuite suite = NULL;
@ -2200,6 +2221,7 @@ int main(int argc, char **argv)
CU_ADD_TEST(suite, test_nvme_ctrlr_init_set_nvmf_ioccsz);
CU_ADD_TEST(suite, test_nvme_ctrlr_init_set_num_queues);
CU_ADD_TEST(suite, test_nvme_ctrlr_init_set_keep_alive_timeout);
CU_ADD_TEST(suite, test_alloc_io_qpair_fail);
CU_basic_set_mode(CU_BRM_VERBOSE);
CU_basic_run_tests();