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<9bd92b61206cda5d9a567c1fe53df24cc9e80191.camel@linux.ibm.com> Subject: Re: [PATCH v3 5/8] s390/pci: Add error cleanup in zpci_directed_irq_init() From: Niklas Schnelle To: Tobias Schumacher , Gerd Bayer , Julian Ruess , Farhan Ali , Christian Borntraeger , Halil Pasic , Matthew Rosato Cc: Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sven Schnelle , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20261009-s390_irq_domain_fixes-v3-5-ced19028da3c@linux.ibm.com> References: <20261009-s390_irq_domain_fixes-v3-0-ced19028da3c@linux.ibm.com> <20261009-s390_irq_domain_fixes-v3-5-ced19028da3c@linux.ibm.com> Autocrypt: addr=schnelle@linux.ibm.com; prefer-encrypt=mutual; keydata=mQINBGHm3M8BEAC+MIQkfoPIAKdjjk84OSQ8erd2OICj98+GdhMQpIjHXn/RJdCZLa58k /ay5x0xIHkWzx1JJOm4Lki7WEzRbYDexQEJP0xUia0U+4Yg7PJL4Dg/W4Ho28dRBROoJjgJSLSHwc 3/1pjpNlSaX/qg3ZM8+/EiSGc7uEPklLYu3gRGxcWV/944HdUyLcnjrZwCn2+gg9ncVJjsimS0ro/ 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impostorscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 clxscore=1015 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610120032 On Fri, 2026-10-09 at 08:15 +0200, Tobias Schumacher wrote: > If per-CPU airq_iv allocation fails in the loop, previously allocated > vectors and arrays leak. Add proper error path to release all resources > on failure. >=20 > The error path frees zpci_sbv, but SIC_IRQ_MODE_DIRECT has already > programmed its address into the hardware. Set the directed interrupt > mode only after all allocations have succeeded, so a failed init leaves > no freed memory registered with the hardware. >=20 > Fixes: e979ce7bced2 ("s390/pci: provide support for CPU directed interrup= ts") > Cc: stable@vger.kernel.org > Signed-off-by: Tobias Schumacher > --- > arch/s390/pci/pci_irq.c | 26 +++++++++++++++++++------- > 1 file changed, 19 insertions(+), 7 deletions(-) >=20 Looks good now, thanks for putting in the work! Reviewed-by: Niklas Schnelle