From: Oded Gabbay <ogabbay@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: SW_Drivers@habana.ai, Ofir Bitton <obitton@habana.ai>
Subject: [PATCH] habanalabs: free host huge va_range if not used
Date: Sun, 29 Nov 2020 00:08:07 +0200 [thread overview]
Message-ID: <20201128220807.21638-1-ogabbay@kernel.org> (raw)
From: Ofir Bitton <obitton@habana.ai>
If huge range is not valid, driver uses the host range also for
huge page allocations, but driver never frees its allocation.
This introduces a memory leak every time a user closes its context.
Signed-off-by: Ofir Bitton <obitton@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
drivers/misc/habanalabs/common/memory.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/misc/habanalabs/common/memory.c b/drivers/misc/habanalabs/common/memory.c
index 84227819e4d1..bfe223abf142 100644
--- a/drivers/misc/habanalabs/common/memory.c
+++ b/drivers/misc/habanalabs/common/memory.c
@@ -1626,6 +1626,7 @@ static int vm_ctx_init_with_ranges(struct hl_ctx *ctx,
goto host_hpage_range_err;
}
} else {
+ kfree(ctx->host_huge_va_range);
ctx->host_huge_va_range = ctx->host_va_range;
}
--
2.17.1
next reply other threads:[~2020-11-28 22:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-28 22:08 Oded Gabbay [this message]
2020-11-28 22:22 [PATCH] habanalabs: Add CB IOCTL opcode to retrieve CB information Oded Gabbay
2020-11-28 22:22 ` [PATCH] habanalabs: free host huge va_range if not used Oded Gabbay
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201128220807.21638-1-ogabbay@kernel.org \
--to=ogabbay@kernel.org \
--cc=SW_Drivers@habana.ai \
--cc=linux-kernel@vger.kernel.org \
--cc=obitton@habana.ai \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).