Re: CVS commit: src/sys/dev/usb

[sc dying <sc.dying%gmail.com@localhost>]

On 2019/01/31 05:51, Rin Okuyama wrote:
> By the way, I find that the system hangs silently by
> "ifconfig mueN down" or detaching LAN7500 from USB port when
> multiple outstanding requests are enabled. This does not occur
> when MUE_TX_LIST_CNT = MUE_RX_LIST_CNT = 1. Do you have any ideas
> to fix it?

My axen dongle locks up if AXEN_RX_LIST_CNT > 1
when ifconfig down on amd64 8.99.34.

db{0}> bt
breakpoint() at netbsd:breakpoint+0x5
comintr() at netbsd:comintr+0x861
Xhandle_ioapic_edge4() at netbsd:Xhandle_ioapic_edge4+0x66
--- interrupt ---
xhci_device_bulk_abort() at netbsd:xhci_device_bulk_abort+0x1c
usbd_ar_pipe() at netbsd:usbd_ar_pipe+0x1e9
usbd_abort_pipe() at netbsd:usbd_abort_pipe+0x27
axen_stop() at netbsd:axen_stop+0xc4
axen_ioctl() at netbsd:axen_ioctl+0x1d9
doifioctl() at netbsd:doifioctl+0xa99
sys_ioctl() at netbsd:sys_ioctl+0x11c
syscall() at netbsd:syscall+0xb4
--- syscall (number 54) ---
732731d1a88a:

Looks like kernel goes infinite loop in usbd_ar_pipe by some reason.
It tries to abort NOT_STARTED xfers.