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devm_kcalloc() may fail. ndtest_probe() allocates three DMA address
arrays (dcr_dma, label_dma, dimm_dma) and later unconditionally uses
them in ndtest_nvdimm_init(), which can lead to a NULL pointer
dereference on allocation failure.
Add NULL checks for all three allocations and return -ENOMEM if any
allocation fails.
Fixes: 9399ab61ad82 ("ndtest: Add dimms to the two buses")
Cc: stable(a)vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244(a)gmail.com>
---
tools/testing/nvdimm/test/ndtest.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tools/testing/nvdimm/test/ndtest.c b/tools/testing/nvdimm/test/ndtest.c
index 68a064ce598c..516f304bb0b9 100644
--- a/tools/testing/nvdimm/test/ndtest.c
+++ b/tools/testing/nvdimm/test/ndtest.c
@@ -855,6 +855,11 @@ static int ndtest_probe(struct platform_device *pdev)
p->dimm_dma = devm_kcalloc(&p->pdev.dev, NUM_DCR,
sizeof(dma_addr_t), GFP_KERNEL);
+ if (!p->dcr_dma || !p->label_dma || !p->dimm_dma) {
+ pr_err("%s: failed to allocate DMA address arrays\n", __func__);
+ return -ENOMEM;
+ }
+
rc = ndtest_nvdimm_init(p);
if (rc)
goto err;
--
2.43.0
The following changes since commit 76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c:
Linux 6.17-rc5 (2025-09-07 14:22:57 -0700)
are available in the Git repository at:
https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus
for you to fetch changes up to 549db78d951726646ae9468e86c92cbd1fe73595:
virtio_config: clarify output parameters (2025-09-16 05:37:03 -0400)
----------------------------------------------------------------
virtio,vhost: last minute fixes
More small fixes. Most notably this reverts a virtio console
change since we made it without considering compatibility
sufficiently.
Signed-off-by: Michael S. Tsirkin <mst(a)redhat.com>
----------------------------------------------------------------
Alok Tiwari (1):
vhost-scsi: fix argument order in tport allocation error message
Alyssa Ross (1):
virtio_config: clarify output parameters
Ashwini Sahu (1):
uapi: vduse: fix typo in comment
Michael S. Tsirkin (1):
Revert "virtio_console: fix order of fields cols and rows"
Sean Christopherson (3):
vhost_task: Don't wake KVM x86's recovery thread if vhost task was killed
vhost_task: Allow caller to omit handle_sigkill() callback
KVM: x86/mmu: Don't register a sigkill callback for NX hugepage recovery tasks
zhang jiao (1):
vhost: vringh: Modify the return value check
arch/x86/kvm/mmu/mmu.c | 7 +-----
drivers/char/virtio_console.c | 2 +-
drivers/vhost/scsi.c | 2 +-
drivers/vhost/vhost.c | 2 +-
drivers/vhost/vringh.c | 7 +++---
include/linux/sched/vhost_task.h | 1 +
include/linux/virtio_config.h | 11 ++++----
include/uapi/linux/vduse.h | 2 +-
kernel/vhost_task.c | 54 ++++++++++++++++++++++++++++++++++++----
9 files changed, 65 insertions(+), 23 deletions(-)
