https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285993
--- Comment #8 from Jim Long <freebsd-bugzi...@umpquanet.com> --- Thank you for taking a look. Yes, bus_child_present is returning 0. The device is a sled-mounted SSD, as mentioned here: https://www.dell.com/support/kbdoc/en-us/000185631/how-to-switch-nvme-for-precision-5820-and-7820-tower It doesn't seem like a loose connection, since it's consistently working through n270866 and broken since n270867, which I sussed out using 'git bisect' on a kernel build. I have one theory to try, to see if I just get lucky. Meanwhile .... Adding a printf to stable/14-n271055-f9afcbff02a2-dirty: 13:02:18 /usr/src# git diff diff --git a/sys/dev/nvme/nvme_ctrlr.c b/sys/dev/nvme/nvme_ctrlr.c index 6f5d6ae74add..1850a5f0a389 100644 --- a/sys/dev/nvme/nvme_ctrlr.c +++ b/sys/dev/nvme/nvme_ctrlr.c @@ -1532,6 +1532,7 @@ nvme_ctrlr_destruct(struct nvme_controller *ctrlr, device_t dev) * do hotplug), so failsafe with detecting all ff's (impossible with * this hardware) as the device being gone. */ +nvme_printf(ctrlr, "bus_child_present(dev) == %d\n", bus_child_present(dev)); gone = bus_child_present(dev) == 0 || (nvme_mmio_read_4(ctrlr, csts) == NVME_GONE); if (gone) dmesg then shows: # egrep -1 'nvme|pcib?10' /var/run/dmesg.boot pci9: <PCI bus> numa-domain 0 on pcib9 pcib10: <PCI-PCI bridge> irq 0 at device 2.0 numa-domain 0 on pci9 pcib10: failed to allocate initial I/O port window: 0-0xafff pcib11: <PCI-PCI bridge> irq 0 at device 3.0 numa-domain 0 on pci9 -- cpufreq19: <CPU frequency control> numa-domain 0 on cpu19 pcib10: Power Fault Detected pci10: <PCI bus> numa-domain 0 on pcib10 nvme0: <Generic NVMe Device> irq 0 at device 0.0 numa-domain 0 on pci10 pcib10: Power Fault Detected hdacc0: <Realtek ALC255 HDA CODEC> at cad 0 on hdac0 -- pcm5: <NVIDIA (0x0080) (HDMI/DP 8ch)> at nid 7 on hdaa1 pcib10: Power Fault Detected Timecounter "TSC-low" frequency 1655996617 Hz quality 1000 -- uhub0: <Intel XHCI root HUB, class 9/0, rev 3.00/1.00, addr 1> on usbus0 nvme0: bus_child_present(dev) == 0 nvme0: failing outstanding i/o nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:14 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:14 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:13 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:13 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:12 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:12 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:11 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:11 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:10 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:10 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:9 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:9 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:8 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:8 cdw0:0 nvme0: ASYNC_EVENT_REQUEST (0c) sqid:0 cid:7 nsid:0 cdw10:00000000 cdw11:00000000 nvme0: ABORTED - BY REQUEST (00/07) crd:0 m:0 dnr:1 p:0 sqid:0 cid:7 cdw0:0 ada0 at ahcich0 bus 0 scbus0 target 0 lun 0 -- Trying to mount root from zfs:thumb/ROOT/default []... nvme0: detached pci10: detached uhub0: 26 ports with 26 removable, self powered -- You are receiving this mail because: You are the assignee for the bug.
