[ Sasha's backport helper bot ]
Hi,
The upstream commit SHA1 provided is correct: 7c2fd76048e95dd267055b5f5e0a48e6e7c81fd9
WARNING: Author mismatch between patch and upstream commit:
Backport author: Hagar Hemdan <hagarhem@xxxxxxxxxx>
Commit author: Puranjay Mohan <pjy@xxxxxxxxxx>
Status in newer kernel trees:
6.12.y | Present (exact SHA1)
6.11.y | Present (different SHA1: dc522d2bc1d0)
6.6.y | Not found
6.1.y | Not found
5.15.y | Not found
5.10.y | Not found
5.4.y | Not found
Note: The patch differs from the upstream commit:
---
--- - 2024-11-25 10:29:11.090159886 -0500
+++ /tmp/tmp.n0e8JIvoqt 2024-11-25 10:29:11.084066265 -0500
@@ -1,3 +1,5 @@
+[ Upstream commit 7c2fd76048e95dd267055b5f5e0a48e6e7c81fd9 ]
+
On an NVMe namespace that does not support metadata, it is possible to
send an IO command with metadata through io-passthru. This allows issues
like [1] to trigger in the completion code path.
@@ -17,58 +19,43 @@
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Reviewed-by: Anuj Gupta <anuj20.g@xxxxxxxxxxx>
Signed-off-by: Keith Busch <kbusch@xxxxxxxxxx>
+[ Move the changes from nvme_map_user_request() to nvme_submit_user_cmd()
+ to make it work on 5.4 ]
+Signed-off-by: Hagar Hemdan <hagarhem@xxxxxxxxxx>
---
- drivers/nvme/host/ioctl.c | 22 ++++++++++++++--------
- 1 file changed, 14 insertions(+), 8 deletions(-)
+ drivers/nvme/host/core.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
-diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
-index 850f81e08e7d8..1d769c842fbf5 100644
---- a/drivers/nvme/host/ioctl.c
-+++ b/drivers/nvme/host/ioctl.c
-@@ -4,6 +4,7 @@
- * Copyright (c) 2017-2021 Christoph Hellwig.
- */
- #include <linux/bio-integrity.h>
-+#include <linux/blk-integrity.h>
- #include <linux/ptrace.h> /* for force_successful_syscall_return */
- #include <linux/nvme_ioctl.h>
- #include <linux/io_uring/cmd.h>
-@@ -119,9 +120,14 @@ static int nvme_map_user_request(struct request *req, u64 ubuffer,
- struct request_queue *q = req->q;
+diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
+index 0676637e1eab..a841fd4929ad 100644
+--- a/drivers/nvme/host/core.c
++++ b/drivers/nvme/host/core.c
+@@ -921,11 +921,16 @@ static int nvme_submit_user_cmd(struct request_queue *q,
+ bool write = nvme_is_write(cmd);
struct nvme_ns *ns = q->queuedata;
- struct block_device *bdev = ns ? ns->disk->part0 : NULL;
-+ bool supports_metadata = bdev && blk_get_integrity(bdev->bd_disk);
+ struct gendisk *disk = ns ? ns->disk : NULL;
++ bool supports_metadata = disk && blk_get_integrity(disk);
+ bool has_metadata = meta_buffer && meta_len;
+ struct request *req;
struct bio *bio = NULL;
+ void *meta = NULL;
int ret;
+ if (has_metadata && !supports_metadata)
+ return -EINVAL;
+
- if (ioucmd && (ioucmd->flags & IORING_URING_CMD_FIXED)) {
- struct iov_iter iter;
-
-@@ -143,15 +149,15 @@ static int nvme_map_user_request(struct request *req, u64 ubuffer,
- goto out;
-
- bio = req->bio;
-- if (bdev) {
-+ if (bdev)
- bio_set_dev(bio, bdev);
-- if (meta_buffer && meta_len) {
-- ret = bio_integrity_map_user(bio, meta_buffer, meta_len,
-- meta_seed);
-- if (ret)
-- goto out_unmap;
-- req->cmd_flags |= REQ_INTEGRITY;
-- }
-+
-+ if (has_metadata) {
-+ ret = bio_integrity_map_user(bio, meta_buffer, meta_len,
-+ meta_seed);
-+ if (ret)
-+ goto out_unmap;
-+ req->cmd_flags |= REQ_INTEGRITY;
- }
-
- return ret;
+ req = nvme_alloc_request(q, cmd, 0, NVME_QID_ANY);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+@@ -940,7 +945,7 @@ static int nvme_submit_user_cmd(struct request_queue *q,
+ goto out;
+ bio = req->bio;
+ bio->bi_disk = disk;
+- if (disk && meta_buffer && meta_len) {
++ if (has_metadata) {
+ meta = nvme_add_user_metadata(bio, meta_buffer, meta_len,
+ meta_seed, write);
+ if (IS_ERR(meta)) {
+--
+2.40.1
+
---
Results of testing on various branches:
| Branch | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.4.y | Success | Success |
