Fwd: usb port issue in 9.1-Prerelease (Possibly Cam related)
Sending to -usb as no response from -stable. Original Message Subject:usb port issue in 9.1-Prerelease (Possibly Cam related) Date: Mon, 10 Sep 2012 23:09:04 +0930 From: Benjamin Close benjamin.cl...@clearchain.com To: freebsd-sta...@freebsd.org Hi Folks, I've facing an intermittent hang with a USB port which seems cam related: Event's that happen are: o USB modem (HUAWEI E220) plugged into PC ugen3.2: HUA WEI at usbus3 u3g0: 3G Modem on usbus3 u3g0: Found 3 ports. umass0: USB MASS STORAGE on usbus3 umass0: SCSI over Bulk-Only; quirks = 0x umass0:6:0:-1: Attached to scbus6 umass1: USB MASS STORAGE on usbus3 umass1: SCSI over Bulk-Only; quirks = 0x umass1:7:1:-1: Attached to scbus7 cd1 at umass-sim0 bus 0 scbus6 target 0 lun 0 cd1: HUAWEI Mass Storage 2.31 Removable CD-ROM SCSI-2 device cd1: 1.000MB/s transfers cd1: Attempt to query device size failed: NOT READY, Medium not present da0 at umass-sim1 bus 1 scbus7 target 0 lun 0 da0: HUAWEI SD Storage 2.31 Removable Direct Access SCSI-2 device da0: 1.000MB/s transfers da0: Attempt to query device size failed: NOT READY, Medium not present o Time Elapsesmany packets passed, no da0 or cd1 used. o USB Modem drops off the bus (It does this occasionally as it resets itself) o Causes USB bus to lose devices ugen3.2: HUA WEI at usbus3 (disconnected) u3g0: at uhub3, port 1, addr 2 (disconnected) (cd1:umass-sim0:0:0:0): lost device, 1 refs (cd1:umass-sim0:0:0:0): removing device entry (pass4:umass-sim0:0:0:0): passdevgonecb: devfs entry is gone (da0:umass-sim1:1:0:0): lost device - 0 outstanding, 1 refs (da0:umass-sim1:1:0:0): removing device entry (pass5:umass-sim1:1:0:0): passdevgonecb: devfs entry is gone umass0: at uhub3, port 1, addr 2 (disconnected) At this point that particular USB port is effectively useless. Plugging anything into the ports shows no device showing up. Running usbconfig hangs with: PIDTID COMM TDNAME KSTACK 48562 101874 usbconfig-mi_switch+0x186 sleepq_wait+0x42 _sx_xlock_hard+0x426 usbd_enum_lock+0xac usb_ref_device+0x21c usb_open+0xc7 devfs_open+0x197 vn_open_cred+0x2ff kern_openat+0x20a amd64_syscall+0x540 Xfast_syscall+0xf7 Controller is: uhci0@pci0:0:26:0: class=0x0c0300 card=0x02091028 chip=0x28348086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB UHCI Controller' class = serial bus subclass = USB uhci1@pci0:0:26:1: class=0x0c0300 card=0x02091028 chip=0x28358086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB UHCI Controller' class = serial bus subclass = USB ehci0@pci0:0:26:7: class=0x0c0320 card=0x02091028 chip=0x283a8086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB2 EHCI Controller' class = serial bus subclass = USB It does however seem related to cam as looking at the various threads for the usb hub I find: (kgdb) bt #0 sched_switch (td=0xfe000265, newtd=0xfe000227f000, flags=Variable flags is not available. ) at /usr/src/sys/kern/sched_ule.c:1927 #1 0x808f34c6 in mi_switch (flags=260, newtd=0x0) at /usr/src/sys/kern/kern_synch.c:485 #2 0x8092bfd2 in sleepq_wait (wchan=0xfe001ec2a900, pri=92) at /usr/src/sys/kern/subr_sleepqueue.c:623 #3 0x808f3c69 in _sleep (ident=0xfe001ec2a900, lock=0xfe00371e9210, priority=Variable priority is not available. ) at /usr/src/sys/kern/kern_synch.c:250 #4 0x802bea02 in cam_sim_free (sim=0xfe001ec2a900, free_devq=1) at /usr/src/sys/cam/cam_sim.c:112 #5 0x8074f8ba in umass_detach (dev=Variable dev is not available. ) at /usr/src/sys/dev/usb/storage/umass.c:2183 #6 0x8091a054 in device_detach (dev=0xfe001ec2e900) at device_if.h:214 #7 0x8075c458 in usb_detach_device (udev=0xfe0007ce8800, iface_index=32 ' ', flag=Variable flag is not available. ) at /usr/src/sys/dev/usb/usb_device.c:1065 #8 0x8075c5f4 in usb_unconfigure (udev=0xfe0007ce8800, flag=Variable flag is not available. ) at /usr/src/sys/dev/usb/usb_device.c:455 #9 0x8075c88e in usb_free_device (udev=0xfe0007ce8800, flag=Variable flag is not available. ) at /usr/src/sys/dev/usb/usb_device.c:2093 #10 0x80764e5e in uhub_explore (udev=0xfe0007353800) at /usr/src/sys/dev/usb/usb_hub.c:358 #11 0x8074f536 in usb_bus_explore (pm=Variable pm is not available. ) at /usr/src/sys/dev/usb/controller/usb_controller.c:359 #12 0x80769173 in usb_process (arg=Variable arg is not available. ) at /usr/src/sys/dev/usb/usb_process.c:170 #13 0x808bc2df in fork_exit (callout=0x807690a0 usb_process, arg=0xff80007c0e88, frame=0xff804743cc40) at /usr/src/sys/kern/kern_fork.c:992 #14 0x80bc216e in fork_trampoline () at /usr/src/sys/amd64/amd64
Re: Fwd: usb port issue in 9.1-Prerelease (Possibly Cam related)
Hi Folks, It actually looks like a race condition. I've noticed over the last day that *sometimes* it does do the right thing. The dmesg when it works is: ugen3.2: HUA WEI at usbus3 (disconnected) u3g0: at uhub3, port 2, addr 2 (disconnected) umass0: at uhub3, port 2, addr 2 (disconnected) (cd1:umass-sim0:0:0:0): lost device, 1 refs (pass4:umass-sim0:0:0:0): passdevgonecb: devfs entry is gone (cd1:umass-sim0:0:0:0): removing device entry umass1: at uhub3, port 2, addr 2 (disconnected) (da0:umass-sim1:1:0:0): lost device - 0 outstanding, 1 refs (pass5:umass-sim1:1:0:0): passdevgonecb: devfs entry is gone (da0:umass-sim1:1:0:0): removing device entry The difference between this one and the one that fails is that the pass adapters remove before the da/cd1 device. ie when it works: (cd1:umass-sim0:0:0:0): lost device, 1 refs (pass4:umass-sim0:0:0:0): passdevgonecb: devfs entry is gone (cd1:umass-sim0:0:0:0): removing device entry When it doesn't: (cd1:umass-sim0:0:0:0): lost device, 1 refs (cd1:umass-sim0:0:0:0): removing device entry (pass4:umass-sim0:0:0:0): passdevgonecb: devfs entry is gone Cheers, Benjamin On 12/09/12 3:19 PM, Hans Petter Selasky wrote: Hi Alexander, Looks like some bugs in the refcounting in CAM layer. --HPS On Wednesday 12 September 2012 02:54:15 Benjamin Close wrote: Sending to -usb as no response from -stable. Original Message Subject:usb port issue in 9.1-Prerelease (Possibly Cam related) Date: Mon, 10 Sep 2012 23:09:04 +0930 From: Benjamin Close benjamin.cl...@clearchain.com To: freebsd-sta...@freebsd.org Hi Folks, I've facing an intermittent hang with a USB port which seems cam related: Event's that happen are: o USB modem (HUAWEI E220) plugged into PC ugen3.2: HUA WEI at usbus3 u3g0: 3G Modem on usbus3 u3g0: Found 3 ports. umass0: USB MASS STORAGE on usbus3 umass0: SCSI over Bulk-Only; quirks = 0x umass0:6:0:-1: Attached to scbus6 umass1: USB MASS STORAGE on usbus3 umass1: SCSI over Bulk-Only; quirks = 0x umass1:7:1:-1: Attached to scbus7 cd1 at umass-sim0 bus 0 scbus6 target 0 lun 0 cd1: HUAWEI Mass Storage 2.31 Removable CD-ROM SCSI-2 device cd1: 1.000MB/s transfers cd1: Attempt to query device size failed: NOT READY, Medium not present da0 at umass-sim1 bus 1 scbus7 target 0 lun 0 da0: HUAWEI SD Storage 2.31 Removable Direct Access SCSI-2 device da0: 1.000MB/s transfers da0: Attempt to query device size failed: NOT READY, Medium not present o Time Elapsesmany packets passed, no da0 or cd1 used. o USB Modem drops off the bus (It does this occasionally as it resets itself) o Causes USB bus to lose devices ugen3.2: HUA WEI at usbus3 (disconnected) u3g0: at uhub3, port 1, addr 2 (disconnected) (cd1:umass-sim0:0:0:0): lost device, 1 refs (cd1:umass-sim0:0:0:0): removing device entry (pass4:umass-sim0:0:0:0): passdevgonecb: devfs entry is gone (da0:umass-sim1:1:0:0): lost device - 0 outstanding, 1 refs (da0:umass-sim1:1:0:0): removing device entry (pass5:umass-sim1:1:0:0): passdevgonecb: devfs entry is gone umass0: at uhub3, port 1, addr 2 (disconnected) At this point that particular USB port is effectively useless. Plugging anything into the ports shows no device showing up. Running usbconfig hangs with: PIDTID COMM TDNAME KSTACK 48562 101874 usbconfig-mi_switch+0x186 sleepq_wait+0x42 _sx_xlock_hard+0x426 usbd_enum_lock+0xac usb_ref_device+0x21c usb_open+0xc7 devfs_open+0x197 vn_open_cred+0x2ff kern_openat+0x20a amd64_syscall+0x540 Xfast_syscall+0xf7 Controller is: uhci0@pci0:0:26:0: class=0x0c0300 card=0x02091028 chip=0x28348086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB UHCI Controller' class = serial bus subclass = USB uhci1@pci0:0:26:1: class=0x0c0300 card=0x02091028 chip=0x28358086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB UHCI Controller' class = serial bus subclass = USB ehci0@pci0:0:26:7: class=0x0c0320 card=0x02091028 chip=0x283a8086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB2 EHCI Controller' class = serial bus subclass = USB It does however seem related to cam as looking at the various threads for the usb hub I find: (kgdb) bt #0 sched_switch (td=0xfe000265, newtd=0xfe000227f000, flags=Variable flags is not available. ) at /usr/src/sys/kern/sched_ule.c:1927 #1 0x808f34c6 in mi_switch (flags=260, newtd=0x0) at /usr/src/sys/kern/kern_synch.c:485 #2 0x8092bfd2 in sleepq_wait (wchan=0xfe001ec2a900, pri=92) at /usr/src/sys/kern/subr_sleepqueue.c:623 #3 0x808f3c69 in _sleep (ident=0xfe001ec2a900, lock=0xfe00371e9210, priority=Variable priority is not available. ) at /usr/src/sys/kern/kern_synch.c:250 #4
Re: Fwd: usb port issue in 9.1-Prerelease (Possibly Cam related)
As a followup for anyone reading the mailing lists.. This hang will most likely be fixed when the resolution to: http://lists.freebsd.org/pipermail/svn-src-head/2012-September/040561.html is correctly worked out. On 12/09/12 3:19 PM, Hans Petter Selasky wrote: Hi Alexander, Looks like some bugs in the refcounting in CAM layer. --HPS On Wednesday 12 September 2012 02:54:15 Benjamin Close wrote: Sending to -usb as no response from -stable. Original Message Subject:usb port issue in 9.1-Prerelease (Possibly Cam related) Date: Mon, 10 Sep 2012 23:09:04 +0930 From: Benjamin Close benjamin.cl...@clearchain.com To: freebsd-sta...@freebsd.org Hi Folks, I've facing an intermittent hang with a USB port which seems cam related: Event's that happen are: o USB modem (HUAWEI E220) plugged into PC ugen3.2: HUA WEI at usbus3 u3g0: 3G Modem on usbus3 u3g0: Found 3 ports. umass0: USB MASS STORAGE on usbus3 umass0: SCSI over Bulk-Only; quirks = 0x umass0:6:0:-1: Attached to scbus6 umass1: USB MASS STORAGE on usbus3 umass1: SCSI over Bulk-Only; quirks = 0x umass1:7:1:-1: Attached to scbus7 cd1 at umass-sim0 bus 0 scbus6 target 0 lun 0 cd1: HUAWEI Mass Storage 2.31 Removable CD-ROM SCSI-2 device cd1: 1.000MB/s transfers cd1: Attempt to query device size failed: NOT READY, Medium not present da0 at umass-sim1 bus 1 scbus7 target 0 lun 0 da0: HUAWEI SD Storage 2.31 Removable Direct Access SCSI-2 device da0: 1.000MB/s transfers da0: Attempt to query device size failed: NOT READY, Medium not present o Time Elapsesmany packets passed, no da0 or cd1 used. o USB Modem drops off the bus (It does this occasionally as it resets itself) o Causes USB bus to lose devices ugen3.2: HUA WEI at usbus3 (disconnected) u3g0: at uhub3, port 1, addr 2 (disconnected) (cd1:umass-sim0:0:0:0): lost device, 1 refs (cd1:umass-sim0:0:0:0): removing device entry (pass4:umass-sim0:0:0:0): passdevgonecb: devfs entry is gone (da0:umass-sim1:1:0:0): lost device - 0 outstanding, 1 refs (da0:umass-sim1:1:0:0): removing device entry (pass5:umass-sim1:1:0:0): passdevgonecb: devfs entry is gone umass0: at uhub3, port 1, addr 2 (disconnected) At this point that particular USB port is effectively useless. Plugging anything into the ports shows no device showing up. Running usbconfig hangs with: PIDTID COMM TDNAME KSTACK 48562 101874 usbconfig-mi_switch+0x186 sleepq_wait+0x42 _sx_xlock_hard+0x426 usbd_enum_lock+0xac usb_ref_device+0x21c usb_open+0xc7 devfs_open+0x197 vn_open_cred+0x2ff kern_openat+0x20a amd64_syscall+0x540 Xfast_syscall+0xf7 Controller is: uhci0@pci0:0:26:0: class=0x0c0300 card=0x02091028 chip=0x28348086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB UHCI Controller' class = serial bus subclass = USB uhci1@pci0:0:26:1: class=0x0c0300 card=0x02091028 chip=0x28358086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB UHCI Controller' class = serial bus subclass = USB ehci0@pci0:0:26:7: class=0x0c0320 card=0x02091028 chip=0x283a8086 rev=0x02 hdr=0x00 vendor = 'Intel Corporation' device = '82801H (ICH8 Family) USB2 EHCI Controller' class = serial bus subclass = USB It does however seem related to cam as looking at the various threads for the usb hub I find: (kgdb) bt #0 sched_switch (td=0xfe000265, newtd=0xfe000227f000, flags=Variable flags is not available. ) at /usr/src/sys/kern/sched_ule.c:1927 #1 0x808f34c6 in mi_switch (flags=260, newtd=0x0) at /usr/src/sys/kern/kern_synch.c:485 #2 0x8092bfd2 in sleepq_wait (wchan=0xfe001ec2a900, pri=92) at /usr/src/sys/kern/subr_sleepqueue.c:623 #3 0x808f3c69 in _sleep (ident=0xfe001ec2a900, lock=0xfe00371e9210, priority=Variable priority is not available. ) at /usr/src/sys/kern/kern_synch.c:250 #4 0x802bea02 in cam_sim_free (sim=0xfe001ec2a900, free_devq=1) at /usr/src/sys/cam/cam_sim.c:112 #5 0x8074f8ba in umass_detach (dev=Variable dev is not available. ) at /usr/src/sys/dev/usb/storage/umass.c:2183 #6 0x8091a054 in device_detach (dev=0xfe001ec2e900) at device_if.h:214 #7 0x8075c458 in usb_detach_device (udev=0xfe0007ce8800, iface_index=32 ' ', flag=Variable flag is not available. ) at /usr/src/sys/dev/usb/usb_device.c:1065 #8 0x8075c5f4 in usb_unconfigure (udev=0xfe0007ce8800, flag=Variable flag is not available. ) at /usr/src/sys/dev/usb/usb_device.c:455 #9 0x8075c88e in usb_free_device (udev=0xfe0007ce8800, flag=Variable flag is not available. ) at /usr/src/sys/dev/usb/usb_device.c:2093 #10 0x80764e5e in uhub_explore (udev=0xfe0007353800) at /usr/src/sys/dev/usb/usb_hub.c:358 #11 0x8074f536 in usb_bus_explore (pm
