From: Will Deacon <will@kernel.org>
To: Qian Cai <quic_qiancai@quicinc.com>
Cc: Marc Zyngier <maz@kernel.org>, James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] KVM: arm64: Fix memory leaks from stage2 pagetable
Date: Tue, 31 May 2022 17:57:11 +0100 [thread overview]
Message-ID: <20220531165710.GB25631@willie-the-truck> (raw)
In-Reply-To: <20220526203956.143873-1-quic_qiancai@quicinc.com>
On Thu, May 26, 2022 at 04:39:56PM -0400, Qian Cai wrote:
> Running some SR-IOV workloads could trigger some leak reports from
> kmemleak.
>
> unreferenced object 0xffff080243cef500 (size 128):
> comm "qemu-system-aar", pid 179935, jiffies 4298359506 (age 1629.732s)
> hex dump (first 32 bytes):
> 28 00 00 00 01 00 00 00 00 e0 4c 52 03 08 ff ff (.........LR....
> e0 af a4 7f 7c d1 ff ff a8 3c b3 08 00 80 ff ff ....|....<......
> backtrace:
> kmem_cache_alloc_trace
> kvm_init_stage2_mmu
Hmm, I can't spot a 128-byte allocation in here so this is pretty cryptic.
I don't really like the idea of papering over the report; we'd be better off
trying to reproduce it.
Will
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next prev parent reply other threads:[~2022-05-31 16:59 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-26 20:39 [PATCH] KVM: arm64: Fix memory leaks from stage2 pagetable Qian Cai
2022-05-31 16:57 ` Will Deacon [this message]
2022-05-31 17:01 ` Will Deacon
2022-05-31 17:41 ` Qian Cai
2022-05-31 17:23 ` Qian Cai
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