[Bug 249966] USB config SX lock

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From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 26 Apr 2023 09:19:49 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249966

--- Comment #3 from Daniel O'Connor <darius@dons.net.au> ---
Yes looks like CAM is stuck:

[cain 18:48]  >sudo procstat -akk | grep -i usb

   15 100468 usb                 usbus0              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100469 usb                 usbus0              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100470 usb                 usbus0              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100471 usb                 usbus0              mi_switch+0xc2
_sleep+0x1fc cam_sim_free+0x80 umass_detach+0x13a device_detach+0x175
device_delete_child+0x15 usb_detach_device+0x16f usb_unconfigure+0x2b
usb_free_device+0x11d uhub_detach+0x9b device_detach+0x175
device_delete_child+0x15 usb_detach_device+0x16f usb_unconfigure+0x2b
usbd_set_config_index+0x53 usb_bus_suspend+0xa5 usb_bus_reset+0x4d
usb_process+0x100
   15 100472 usb                 usbus0              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100474 usb                 usbus1              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100475 usb                 usbus1              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100476 usb                 usbus1              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100477 usb                 usbus1              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100478 usb                 usbus1              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100480 usb                 usbus2              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100481 usb                 usbus2              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100482 usb                 usbus2              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100483 usb                 usbus2              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100484 usb                 usbus2              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100488 usb                 usbus3              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100489 usb                 usbus3              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100490 usb                 usbus3              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100491 usb                 usbus3              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 100492 usb                 usbus3              mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe
   15 102528 usb                 urndis0             mi_switch+0xc2
_cv_wait+0x113 usb_process+0xc1 fork_exit+0x7e fork_trampoline+0xe

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