Re: kern/54963: UHCI panic on shutdown

["John D. Baker" <jdbaker%consolidated.net@localhost>]

The following reply was made to PR kern/54963; it has been noted by GNATS.

From: "John D. Baker" <jdbaker%consolidated.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/54963: UHCI panic on shutdown
Date: Fri, 14 Feb 2020 09:33:16 -0600 (CST)

 I've seen this too.
 
 While collecting data for kern/52440, I booted a test system with my
 live-USB flash drive (9.99.46 from 202002130200Z).  Upon rebooting, the
 machine panicked with:
 
 reboot: rebooted by root
 [ 147.4887060] syncing disks... done
 [ 147.5210129] cd0: detached
 [ 147.5584525] atapibus0: detached
 [ 147.5887468] atabus1: detached
 [ 147.6312528] atabus0: detached
 [ 147.6587763] makphy0: detached
 [ 147.6987924] msk0: detached
 [ 147.7288127] atabus3: detached
 [ 147.7688234] atabus2: detached
 [ 147.8049328] uhub6: detached
 [ 147.8382125] Skipping crash dump on recursive panic
 [ 147.8954128] panic: kernel diagnostic assertion "sc->sc_intr_xfer == NULL" failed: file "/x/current/src/sys/dev/usb/uhci.c", line 3928 
 [ 148.0399730] cpu0: Begin traceback...
 [ 148.0826129] vpanic() at netbsd:vpanic+0x178
 [ 148.1304527] kern_assert() at netbsd:kern_assert+0x48
 [ 148.1897324] uhci_root_intr_close() at netbsd:uhci_root_intr_close+0x96
 [ 148.2698124] usbd_close_pipe() at netbsd:usbd_close_pipe+0xca
 [ 148.3301332] uhub_detach() at netbsd:uhub_detach+0xa8
 [ 148.3894123] config_detach() at netbsd:config_detach+0xe5
 [ 148.4601319] config_detach_all() at netbsd:config_detach_all+0x97
 [ 148.5298127] cpu_reboot() at netbsd:cpu_reboot+0x18f
 [ 148.5901326] sys_reboot() at netbsd:sys_reboot
 [ 148.6400525] sys_reboot() at netbsd:sys_reboot+0x75
 [ 148.6993331] syscall() at netbsd:syscall+0x299
 [ 148.7492532] --- syscall (number 208) ---
 [ 148.7981326] 7d651d24317a:
 [ 148.8293325] cpu0: End traceback...
 [ 148.8698927] fatal breakpoint trap in supervisor mode
 [ 148.9291720] trap type 1 code 0 rip 0xffffffff8021f55d cs 0x8 rflags 0x202 cr2 0x75e474c075b8 ilevel 0 rsp 0xffffc380c1197cd0
 [ 149.0633322] curlwp 0xffff925692009a40 pid 11.1 lowest kstack 0xffffc380c11942c0
 Stopped in pid 11.1 (reboot) at netbsd:breakpoint+0x5:  leave
 db{0}>
 
 It didn't unmount the USB flash drive (sd0a) and it doesn't appear to
 have been detached before the panic, so the file system wasn't clean.
 
 Seems to happen only if a umass device is mounted.  Following operation
 on unmounted umass (fsck), rebooting goes normally.
 
 -- 
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