Re: [PATCH 2/2] powerpc/powernv/pci: Fix underflow and leak issue

On 8/4/25 12:07, Nam Cao wrote:

pnv_irq_domain_alloc() allocates interrupts at parent's interrupt domain. If it fails in the progress, all allocated interrupts are freed.

The number of successfully allocated interrupts so far is stored "i". However, "i - 1" interrupts are freed. This is broken:

 - One interrupt is not be freed

 - If "i" is zero, "i - 1" wraps around

Correct the number of freed interrupts to "i".

Fixes: 0fcfe2247e75 ("powerpc/powernv/pci: Add MSI domains") Signed-off-by: Nam Cao namcao@linutronix.de Cc: stable@vger.kernel.org

---

arch/powerpc/platforms/powernv/pci-ioda.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Cédric Le Goater clg@redhat.com

Thanks,

C.