Date: Sun, 20 Mar 2011 08:15:36 GMT From: Kevin Day <kevin@your.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/155714: zyd_bulk_write_callback panic in 8.2-RELEASE Message-ID: <201103200815.p2K8Fa8f005290@cs43.your.org> Resent-Message-ID: <201103200830.p2K8U1rh083863@freefall.freebsd.org>
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>Number: 155714 >Category: kern >Synopsis: zyd_bulk_write_callback panic in 8.2-RELEASE >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Mar 20 08:30:01 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Kevin Day >Release: FreeBSD 8.2-RELEASE amd64 >Organization: Your.Org >Environment: System: FreeBSD cs43.your.org 8.2-RELEASE FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 zyd0: <Belkin USB2.0 WLAN, rev 2.00/48.10, addr 2> on usbus1 >Description: The zyd(4) driver worked for us in 8.1, but will cause a panic as soon as the wlan interface is brought up in 8.2. >How-To-Repeat: ifconfig wlan0 create wlandev zyd0 ifconfig zyd0 up ifconfig wlan0 up (panic here) panic: page fault cpuid = 4 KDB: stack backtrace: #0 0xffffffff805f4e0e at kdb_backtrace+0x5e #1 0xffffffff805c2d07 at panic+0x187 #2 0xffffffff808ac600 at trap_fatal+0x290 #3 0xffffffff808ac9df at trap_pfault+0x28f #4 0xffffffff808acebf at trap+0x3df #5 0xffffffff80894fb4 at calltrap+0x8 #6 0xffffffff80519190 at zyd_bulk_write_callback+0x230 #7 0xffffffff804fe740 at usbd_callback_wrapper+0x4c0 #8 0xffffffff804fabc6 at usb_command_wrapper+0x76 #9 0xffffffff804fd797 at usb_callback_proc+0x87 #10 0xffffffff804f7e23 at usb_process+0xd3 #11 0xffffffff805994f8 at fork_exit+0x118 #12 0xffffffff8089547e at fork_trampoline+0xe (hard hang) 0xffffffff80519190 translates to: /usr/src/sys/dev/usb/wlan/if_zyd.c:2383 It's hard locking at this point, so it's difficult for me to get much more in the way of debugging. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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