Le 22/09/2025 à 17:10, Guangshuo Li a écrit :
[Vous ne recevez pas souvent de courriers de [email protected].
Découvrez pourquoi ceci est important à
https://aka.ms/LearnAboutSenderIdentification ]
As kcalloc() may fail, check its return value to avoid a NULL pointer
dereference when passing it to of_property_read_u32_array().
Fixes: 790a1662d3a26 ("powerpc/smp: Parse ibm,thread-groups with multiple
properties")
Cc: [email protected]
---
changelog:
v2:
- Return -ENOMEM directly on allocation failure.
Signed-off-by: Guangshuo Li <[email protected]>
The Signed-off-by: must be above the ---, otherwise it will be lost when
applying the commit.
With that fixed,
Reviewed-by: Christophe Leroy <[email protected]>
---
arch/powerpc/kernel/smp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index 5ac7084eebc0..cfccb9389760 100644
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -822,6 +822,8 @@ static int parse_thread_groups(struct device_node *dn,
count = of_property_count_u32_elems(dn, "ibm,thread-groups");
thread_group_array = kcalloc(count, sizeof(u32), GFP_KERNEL);
+ if (!thread_group_array)
+ return -ENOMEM;
ret = of_property_read_u32_array(dn, "ibm,thread-groups",
thread_group_array, count);
if (ret)
--
2.43.0
