This is a note to let you know that I've just added the patch titled
accel/habanalabs: fix mem leak in capture user mappings
to the 6.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
accel-habanalabs-fix-mem-leak-in-capture-user-mappin.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f626f22820b8fe9e414750e4ac21c3f8b4477874
Author: Moti Haimovski <mhaimovski@xxxxxxxxx>
Date: Sun Apr 16 18:36:17 2023 +0300
accel/habanalabs: fix mem leak in capture user mappings
[ Upstream commit 314a7ffd7c196b27eedd50cb7553029e17789b55 ]
This commit fixes a memory leak caused when clearing the user_mappings
info when a new context is opened immediately after user_mapping is
captured and a hard reset is performed.
Signed-off-by: Moti Haimovski <mhaimovski@xxxxxxxxx>
Reviewed-by: Dani Liberman <dliberman@xxxxxxxxx>
Reviewed-by: Oded Gabbay <ogabbay@xxxxxxxxxx>
Signed-off-by: Oded Gabbay <ogabbay@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/accel/habanalabs/common/habanalabs_drv.c b/drivers/accel/habanalabs/common/habanalabs_drv.c
index 1ec97da3dddb8..70fb2df9a93b8 100644
--- a/drivers/accel/habanalabs/common/habanalabs_drv.c
+++ b/drivers/accel/habanalabs/common/habanalabs_drv.c
@@ -13,6 +13,7 @@
#include <linux/pci.h>
#include <linux/module.h>
+#include <linux/vmalloc.h>
#define CREATE_TRACE_POINTS
#include <trace/events/habanalabs.h>
@@ -218,6 +219,7 @@ int hl_device_open(struct inode *inode, struct file *filp)
hl_debugfs_add_file(hpriv);
+ vfree(hdev->captured_err_info.page_fault_info.user_mappings);
memset(&hdev->captured_err_info, 0, sizeof(hdev->captured_err_info));
atomic_set(&hdev->captured_err_info.cs_timeout.write_enable, 1);
hdev->captured_err_info.undef_opcode.write_enable = true;
