x86/xen: Fix memory leak in xen_smp_intr_init{_pv}()
authorXiu Jianfeng <xiujianfeng@huawei.com>
Wed, 23 Nov 2022 15:58:57 +0000 (23:58 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 31 Dec 2022 12:14:04 +0000 (13:14 +0100)
commit23aef94eea714b721546c0c49a324a8da8d00fb5
tree9ccdd7af968f4b8006fdd0e9c9cd3f504b03c720
parent03ab1c5c2f0bbb9694f1835c585ba0200eb3d7ab
x86/xen: Fix memory leak in xen_smp_intr_init{_pv}()

[ Upstream commit 69143f60868b3939ddc89289b29db593b647295e ]

These local variables @{resched|pmu|callfunc...}_name saves the new
string allocated by kasprintf(), and when bind_{v}ipi_to_irqhandler()
fails, it goes to the @fail tag, and calls xen_smp_intr_free{_pv}() to
free resource, however the new string is not saved, which cause a memory
leak issue. fix it.

Fixes: 9702785a747a ("i386: move xen")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20221123155858.11382-2-xiujianfeng@huawei.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/x86/xen/smp.c
arch/x86/xen/smp_pv.c