kill_fq removes a complete frame queue, it needs to free the qman_fq
in the last. Else kmemleak will report the below warning:
unreferenced object 0xffff800073085c80 (size 128):
comm "cryptomgr_test", pid 199, jiffies 4294937850 (age 67.840s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 a0 80 7e 00 00 80 ff ff
00 00 00 00 00 00 00 00 04 00 04 00 5c 01 00 00
backtrace:
[<ffff8000001e5760>] create_object+0xf8/0x258
[<ffff800000994e38>] kmemleak_alloc+0x58/0xa0
[<ffff8000001d5f18>] kmem_cache_alloc_trace+0x2c8/0x358
[<ffff8000007e8410>] create_caam_req_fq+0x40/0x170
[<ffff8000007e870c>] caam_drv_ctx_update+0x54/0x248
[<ffff8000007fca54>] aead_setkey+0x154/0x300
[<ffff800000452120>] setkey+0x50/0xf0
[<ffff80000045b144>] __test_aead+0x5ec/0x1028
[<ffff80000045c28c>] test_aead+0x44/0xc8
[<ffff80000045c368>] alg_test_aead+0x58/0xd0
[<ffff80000045bdb4>] alg_test+0x14c/0x308
[<ffff8000004588e8>] cryptomgr_test+0x50/0x58
[<ffff8000000c3b2c>] kthread+0xdc/0xf0
[<ffff800000083c00>] ret_from_fork+0x10/0x50
And check where the function kill_fq() is called to remove
the additional kfree to qman_fq.
Signed-off-by: Xulin Sun <xulin.sun@xxxxxxxxxxxxx>
---
drivers/crypto/caam/qi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/crypto/caam/qi.c b/drivers/crypto/caam/qi.c
index 1990ed4..c4b9173 100644
--- a/drivers/crypto/caam/qi.c
+++ b/drivers/crypto/caam/qi.c
@@ -277,6 +277,7 @@ static int kill_fq(struct device *qidev, struct qman_fq *fq)
dev_err(qidev, "OOS of FQID: %u failed\n", fq->fqid);
qman_destroy_fq(fq);
+ kfree(fq);
return ret;
}
@@ -511,7 +512,6 @@ int caam_qi_shutdown(struct device *qidev)
if (kill_fq(qidev, per_cpu(pcpu_qipriv.rsp_fq, i)))
dev_err(qidev, "Rsp FQ kill failed, cpu: %d\n", i);
- kfree(per_cpu(pcpu_qipriv.rsp_fq, i));
}
/*
--
2.7.4
