[PATCH] nvdimm: check for null return of devm_kmalloc in nd_pfn_probe

[Kang Chen]

devm_kmalloc may fails, pfn_sb might be null and will cause
null pointer dereference later.

Signed-off-by: Kang Chen 
---
 drivers/nvdimm/pfn_devs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/nvdimm/pfn_devs.c b/drivers/nvdimm/pfn_devs.c
index af7d93015..d24fad175 100644
--- a/drivers/nvdimm/pfn_devs.c
+++ b/drivers/nvdimm/pfn_devs.c
@@ -640,6 +640,8 @@ int nd_pfn_probe(struct device *dev, struct 
nd_namespace_common *ndns)
if (!pfn_dev)
return -ENOMEM;
pfn_sb = devm_kmalloc(dev, sizeof(*pfn_sb), GFP_KERNEL);
+   if (!pfn_sb)
+   return -ENOMEM;
nd_pfn = to_nd_pfn(pfn_dev);
nd_pfn->pfn_sb = pfn_sb;
rc = nd_pfn_validate(nd_pfn, PFN_SIG);
-- 
2.34.1

Re: [GIT PULL] Compute Express Link (CXL) for 6.3

[pr-tracker-bot]

The pull request you sent on Tue, 21 Feb 2023 21:15:14 -0800:

> git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl tags/cxl-for-6.3

has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/7c3dc440b1f5c75f45e24430f913e561dc82a419

Thank you!

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