From: Keith Busch <kbusch@kernel.org>
To: linux-nvme@lists.infradead.org, hch@lst.de, sagi@grimberg.me
Cc: Keith Busch <kbusch@kernel.org>, chaitanya.kulkarni@wdc.com
Subject: [PATCH] nvme: fix memory leak freeing command effects
Date: Fri, 13 Nov 2020 10:45:45 -0800 [thread overview]
Message-ID: <20201113184545.2707853-1-kbusch@kernel.org> (raw)
xa_destroy() frees only internal data. The caller is responsible for
freeing the exteranl objects referenced by an xarray.
Fixes: 1cf7a12e09aa4 ("nvme: use an xarray to lookup the Commands Supported and Effects log")
Signed-off-by: Keith Busch <kbusch@kernel.org>
---
drivers/nvme/host/core.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 2c197f69c03a..a288d925f71b 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4398,6 +4398,19 @@ void nvme_uninit_ctrl(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_uninit_ctrl);
+static void nvme_free_cels(struct nvme_ctrl *ctrl)
+{
+ struct nvme_effects_log *cel;
+ unsigned long i;
+
+ xa_for_each (&ctrl->cels, i, cel) {
+ xa_erase(&ctrl->cels, i);
+ kfree(cel);
+ }
+
+ xa_destroy(&ctrl->cels);
+}
+
static void nvme_free_ctrl(struct device *dev)
{
struct nvme_ctrl *ctrl =
@@ -4407,8 +4420,7 @@ static void nvme_free_ctrl(struct device *dev)
if (!subsys || ctrl->instance != subsys->instance)
ida_simple_remove(&nvme_instance_ida, ctrl->instance);
- xa_destroy(&ctrl->cels);
-
+ nvme_free_cels(ctrl);
nvme_mpath_uninit(ctrl);
__free_page(ctrl->discard_page);
--
2.24.1
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next reply other threads:[~2020-11-13 18:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-13 18:45 Keith Busch [this message]
2020-11-14 9:03 ` [PATCH] nvme: fix memory leak freeing command effects Christoph Hellwig
2020-11-16 23:23 ` Chaitanya Kulkarni
2020-11-17 15:26 ` Keith Busch
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