Messages in this thread Patch in this message | | | From | Kunwu Chan <> | Subject | [PATCH] powerpc/powernv: Fix null pointer dereference in opal_powercap_init | Date | Sun, 26 Nov 2023 17:57:39 +0800 |
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kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure.
Fixes: b9ef7b4b867f ("powerpc: Convert to using %pOFn instead of device_node.name") Signed-off-by: Kunwu Chan <chentao@kylinos.cn> --- arch/powerpc/platforms/powernv/opal-powercap.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/arch/powerpc/platforms/powernv/opal-powercap.c b/arch/powerpc/platforms/powernv/opal-powercap.c index 7bfe4cbeb35a..ea917266aa17 100644 --- a/arch/powerpc/platforms/powernv/opal-powercap.c +++ b/arch/powerpc/platforms/powernv/opal-powercap.c @@ -196,6 +196,12 @@ void __init opal_powercap_init(void) j = 0; pcaps[i].pg.name = kasprintf(GFP_KERNEL, "%pOFn", node); + if (!pcaps[i].pg.name) { + kfree(pcaps[i].pattrs); + kfree(pcaps[i].pg.attrs); + goto out_pcaps_pattrs; + } + if (has_min) { powercap_add_attr(min, "powercap-min", &pcaps[i].pattrs[j]); -- 2.34.1
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