** Changed in: linux (Ubuntu Bionic)
Status: Triaged => In Progress
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https://bugs.launchpad.net/bugs/1818747
Title:
Crash in nvme_irq_check() when using threaded interrupts
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
In Progress
Status in linux source package in Cosmic:
In Progress
Status in linux source package in Disco:
Fix Released
Bug description:
[Impact]
kernel crashes under load w/ nvme.use_threaded_interrupts=1
[Test Case]
Boot w/ nvme.use_threaded_interrupts=1
sudo fio -name=randread -numjobs=8 -filename=/dev/nvme0n1 -rw=randread
-ioengine=libaio -direct=1 -iodepth=64 -sync=0 -norandommap
-group_reporting -runtime=300 -time_based -bs=4k
[ 284.756476] CPU: 0 PID: 1047 Comm: irq/97-nvme0q1 Not tainted
4.18.0-15-generic #16~18.04.1-Ubuntu
[ 284.765420] Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 -
V1.13.01 02/14/2019
[ 284.773930] pstate: 00400089 (nzcv daIf +PAN -UAO)
[ 284.778711] pc : nvme_irq_check+0x30/0x48 [nvme]
[ 284.783319] lr : __handle_irq_event_percpu+0x68/0x228
[ 284.788356] sp : ffff000008003e70
[Fix]
dcca166272722 nvme-pci: fix out of bounds access in nvme_cqe_pending
[Regression Risk]
Restricted to systems w/ NVMe. There are no upstream patches marked as Fixing
the upstream change, which suggests it is not yet know to introduce regressions.
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