lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 8 Feb 2022 16:21:56 +0000 From: Will Deacon <will@...nel.org> To: linux-kernel@...r.kernel.org, Zhou Guanghui <zhouguanghui1@...wei.com>, iommu@...ts.linux-foundation.org Cc: catalin.marinas@....com, kernel-team@...roid.com, Will Deacon <will@...nel.org>, xuqiang36@...wei.com, jean-philippe@...aro.org, joro@...tes.org Subject: Re: [PATCH] iommu/arm-smmu-v3: fix event handling soft lockup On Wed, 19 Jan 2022 07:07:54 +0000, Zhou Guanghui wrote: > During event processing, events are read from the event queue one > by one until the queue is empty.If the master device continuously > requests address access at the same time and the SMMU generates > events, the cyclic processing of the event takes a long time and > softlockup warnings may be reported. > > arm-smmu-v3 arm-smmu-v3.34.auto: event 0x0a received: > arm-smmu-v3 arm-smmu-v3.34.auto: 0x00007f220000280a > arm-smmu-v3 arm-smmu-v3.34.auto: 0x000010000000007e > arm-smmu-v3 arm-smmu-v3.34.auto: 0x00000000034e8670 > watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [irq/268-arm-smm:247] > Call trace: > _dev_info+0x7c/0xa0 > arm_smmu_evtq_thread+0x1c0/0x230 > irq_thread_fn+0x30/0x80 > irq_thread+0x128/0x210 > kthread+0x134/0x138 > ret_from_fork+0x10/0x1c > Kernel panic - not syncing: softlockup: hung tasks > > [...] Applied to will (for-joerg/arm-smmu/updates), thanks! [1/1] iommu/arm-smmu-v3: fix event handling soft lockup https://git.kernel.org/will/c/30de2b541af9 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev
Powered by blists - more mailing lists