From: sashiko-bot@kernel.org
To: "Farhan Ali" <alifm@linux.ibm.com>
Cc: "Alexander Gordeev" <agordeev@linux.ibm.com>,
kvm@vger.kernel.org, linux-s390@vger.kernel.org,
"Vasily Gorbik" <gor@linux.ibm.com>,
"Heiko Carstens" <hca@linux.ibm.com>
Subject: Re: [PATCH v4 4/6] KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
Date: Wed, 22 Jul 2026 17:19:11 +0000 [thread overview]
Message-ID: <20260722171912.5F8BC1F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260722170621.1686-5-alifm@linux.ibm.com>
> The airq_iv_create() can return NULL on failure, but the return value was
> never checked. If it fails, zdev->aibv will be NULL and fail when
> derefenced in kvm_zpci_set_airq(). Add a NULL check and free the previously
> allocated AISB bit and zdev->aisb on failure.
>
> Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
> Signed-off-by: Farhan Ali <alifm@linux.ibm.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260722170621.1686-1-alifm@linux.ibm.com?part=4
next prev parent reply other threads:[~2026-07-22 17:19 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-22 17:06 [PATCH v4 0/6] KVM s390x PCI fixes Farhan Ali
2026-07-22 17:06 ` [PATCH v4 1/6] KVM: s390: pci: Reject adapter interrupt forwarding if already enabled Farhan Ali
2026-07-22 17:25 ` sashiko-bot
2026-07-22 17:06 ` [PATCH v4 2/6] KVM: s390: pci: Fix memory accounting for pinned/unpinned pages Farhan Ali
2026-07-22 17:21 ` sashiko-bot
2026-07-22 17:06 ` [PATCH v4 3/6] KVM: s390: pci: Fix missing error codes and memory unaccounting Farhan Ali
2026-07-22 17:17 ` sashiko-bot
2026-07-22 17:06 ` [PATCH v4 4/6] KVM: s390: pci: Fix NULL dereference on AIBV allocation failure Farhan Ali
2026-07-22 17:19 ` sashiko-bot [this message]
2026-07-22 17:06 ` [PATCH v4 5/6] KVM: s390: pci: Fix resource leak on IRQ registration failure Farhan Ali
2026-07-22 17:15 ` sashiko-bot
2026-07-22 17:06 ` [PATCH v4 6/6] KVM: s390: pci: Validate AIBV and AISB before pinning guest pages Farhan Ali
2026-07-22 17:26 ` sashiko-bot
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