From: Kunwu Chan <chentao@kylinos.cn> stable inclusion from stable-v4.19.306 commit 8422d179cf46889c15ceff9ede48c5bfa4e7f0b4 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9Q9IH CVE: CVE-2023-52686 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 8649829a1dd25199bbf557b2621cedb4bf9b3050 ] kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Fixes: 2717a33d6074 ("powerpc/opal-irqchip: Use interrupt names if present") Signed-off-by: Kunwu Chan <chentao@kylinos.cn> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20231127030755.1546750-1-chentao@kylinos.cn Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Guo Mengqi <guomengqi3@huawei.com> --- arch/powerpc/platforms/powernv/opal-irqchip.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c index bc97770a67db..e71f2111c8c0 100644 --- a/arch/powerpc/platforms/powernv/opal-irqchip.c +++ b/arch/powerpc/platforms/powernv/opal-irqchip.c @@ -282,6 +282,8 @@ int __init opal_event_init(void) else name = kasprintf(GFP_KERNEL, "opal"); + if (!name) + continue; /* Install interrupt handler */ rc = request_irq(r->start, opal_interrupt, r->flags & IRQD_TRIGGER_MASK, name, NULL); -- 2.17.1