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nvdimm changes for v6.6 merge window

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- kstrtobool() conversion for nvdimm
 - Add REQ_OP_WRITE for virtio_pmem
 - Header files update for of_pmem
 - Restrict zero-sized namespace from being exposed to user
 - Avoid unnecessary endian conversion
 - Fix mem leak in nvdimm pmu
 - Fix dereference after free in nvdimm pmu
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Merge tag 'libnvdimm-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm

Pull nvdimm updates from Dave Jiang:
 "This is mostly small cleanups, fixes, and with a change to prevent
  zero-sized namespace exposed to user for nvdimm.

  Summary:

   - kstrtobool() conversion for nvdimm

   - Add REQ_OP_WRITE for virtio_pmem

   - Header files update for of_pmem

   - Restrict zero-sized namespace from being exposed to user

   - Avoid unnecessary endian conversion

   - Fix mem leak in nvdimm pmu

   - Fix dereference after free in nvdimm pmu"

* tag 'libnvdimm-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  nvdimm: Fix dereference after free in register_nvdimm_pmu()
  nvdimm: Fix memleak of pmu attr_groups in unregister_nvdimm_pmu()
  nvdimm/pfn_dev: Avoid unnecessary endian conversion
  nvdimm/pfn_dev: Prevent the creation of zero-sized namespaces
  nvdimm: Explicitly include correct DT includes
  virtio_pmem: add the missing REQ_OP_WRITE for flush bio
  nvdimm: Use kstrtobool() instead of strtobool()
This commit is contained in:
Linus Torvalds 2023-08-30 20:52:08 -07:00
commit 47d154eb2a
7 changed files with 26 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/nvdimm/namespace_devs.c
View File

@ -2,6 +2,7 @@
/*
* Copyright(c) 2013-2015 Intel Corporation. All rights reserved.
*/
#include <linux/kstrtox.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/sort.h>
@ -1338,7 +1339,7 @@ static ssize_t force_raw_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
bool force_raw;
int rc = strtobool(buf, &force_raw);
int rc = kstrtobool(buf, &force_raw);
if (rc)
return rc;

3
drivers/nvdimm/nd_perf.c
View File

@ -308,8 +308,8 @@ int register_nvdimm_pmu(struct nvdimm_pmu *nd_pmu, struct platform_device *pdev)
rc = perf_pmu_register(&nd_pmu->pmu, nd_pmu->pmu.name, -1);
if (rc) {
kfree(nd_pmu->pmu.attr_groups);
nvdimm_pmu_free_hotplug_memory(nd_pmu);
kfree(nd_pmu->pmu.attr_groups);
return rc;
}
@ -324,6 +324,7 @@ void unregister_nvdimm_pmu(struct nvdimm_pmu *nd_pmu)
{
perf_pmu_unregister(&nd_pmu->pmu);
nvdimm_pmu_free_hotplug_memory(nd_pmu);
kfree(nd_pmu->pmu.attr_groups);
kfree(nd_pmu);
}
EXPORT_SYMBOL_GPL(unregister_nvdimm_pmu);

3
drivers/nvdimm/nd_virtio.c
View File

@ -105,7 +105,8 @@ int async_pmem_flush(struct nd_region *nd_region, struct bio *bio)
* parent bio. Otherwise directly call nd_region flush.
*/
if (bio && bio->bi_iter.bi_sector != -1) {
struct bio *child = bio_alloc(bio->bi_bdev, 0, REQ_PREFLUSH,
struct bio *child = bio_alloc(bio->bi_bdev, 0,
REQ_OP_WRITE | REQ_PREFLUSH,
GFP_ATOMIC);
if (!child)

4
drivers/nvdimm/of_pmem.c
View File

@ -2,11 +2,11 @@
#define pr_fmt(fmt) "of_pmem: " fmt
#include <linux/of_platform.h>
#include <linux/of_address.h>
#include <linux/of.h>
#include <linux/libnvdimm.h>
#include <linux/module.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
struct of_pmem_private {

20
drivers/nvdimm/pfn_devs.c
View File

@ -452,8 +452,9 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
u64 checksum, offset;
struct resource *res;
enum nd_pfn_mode mode;
resource_size_t res_size;
struct nd_namespace_io *nsio;
unsigned long align, start_pad;
unsigned long align, start_pad, end_trunc;
struct nd_pfn_sb *pfn_sb = nd_pfn->pfn_sb;
struct nd_namespace_common *ndns = nd_pfn->ndns;
const uuid_t *parent_uuid = nd_dev_to_uuid(&ndns->dev);
@ -503,6 +504,7 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
align = le32_to_cpu(pfn_sb->align);
offset = le64_to_cpu(pfn_sb->dataoff);
start_pad = le32_to_cpu(pfn_sb->start_pad);
end_trunc = le32_to_cpu(pfn_sb->end_trunc);
if (align == 0)
align = 1UL << ilog2(offset);
mode = le32_to_cpu(pfn_sb->mode);
@ -584,7 +586,8 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
*/
nsio = to_nd_namespace_io(&ndns->dev);
res = &nsio->res;
if (offset >= resource_size(res)) {
res_size = resource_size(res);
if (offset >= res_size) {
dev_err(&nd_pfn->dev, "pfn array size exceeds capacity of %s\n",
dev_name(&ndns->dev));
return -EOPNOTSUPP;
@ -598,18 +601,20 @@ int nd_pfn_validate(struct nd_pfn *nd_pfn, const char *sig)
return -EOPNOTSUPP;
}
if (!IS_ALIGNED(res->start + le32_to_cpu(pfn_sb->start_pad),
memremap_compat_align())) {
if (!IS_ALIGNED(res->start + start_pad, memremap_compat_align())) {
dev_err(&nd_pfn->dev, "resource start misaligned\n");
return -EOPNOTSUPP;
}
if (!IS_ALIGNED(res->end + 1 - le32_to_cpu(pfn_sb->end_trunc),
memremap_compat_align())) {
if (!IS_ALIGNED(res->end + 1 - end_trunc, memremap_compat_align())) {
dev_err(&nd_pfn->dev, "resource end misaligned\n");
return -EOPNOTSUPP;
}
if (offset >= (res_size - start_pad - end_trunc)) {
dev_err(&nd_pfn->dev, "bad offset with small namespace\n");
return -EOPNOTSUPP;
}
return 0;
}
EXPORT_SYMBOL(nd_pfn_validate);
@ -810,7 +815,8 @@ static int nd_pfn_init(struct nd_pfn *nd_pfn)
else
return -ENXIO;
if (offset >= size) {
if (offset >= (size - end_trunc)) {
/* This results in zero size devices */
dev_err(&nd_pfn->dev, "%s unable to satisfy requested alignment\n",
dev_name(&ndns->dev));
return -ENXIO;

3
drivers/nvdimm/pmem.c
View File

@ -17,6 +17,7 @@
#include <linux/moduleparam.h>
#include <linux/badblocks.h>
#include <linux/memremap.h>
#include <linux/kstrtox.h>
#include <linux/vmalloc.h>
#include <linux/blk-mq.h>
#include <linux/pfn_t.h>
@ -385,7 +386,7 @@ static ssize_t write_cache_store(struct device *dev,
bool write_cache;
int rc;
rc = strtobool(buf, &write_cache);
rc = kstrtobool(buf, &write_cache);
if (rc)
return rc;
dax_write_cache(pmem->dax_dev, write_cache);

5
drivers/nvdimm/region_devs.c
View File

@ -5,6 +5,7 @@
#include <linux/scatterlist.h>
#include <linux/memregion.h>
#include <linux/highmem.h>
#include <linux/kstrtox.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/hash.h>
@ -275,7 +276,7 @@ static ssize_t deep_flush_store(struct device *dev, struct device_attribute *att
const char *buf, size_t len)
{
bool flush;
int rc = strtobool(buf, &flush);
int rc = kstrtobool(buf, &flush);
struct nd_region *nd_region = to_nd_region(dev);
if (rc)
@ -530,7 +531,7 @@ static ssize_t read_only_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t len)
{
bool ro;
int rc = strtobool(buf, &ro);
int rc = kstrtobool(buf, &ro);
struct nd_region *nd_region = to_nd_region(dev);
if (rc)