Re: [beagleboard] EHCI softirq kernel panic[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Subject: Re: [beagleboard] EHCI softirq kernel panic From: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Date: Wed, 10 Aug 2011 10:11:48 -0400 (EDT) Cc: Jason Kridner <jkridner@xxxxxxxxxxxxxxx>, <beagleboard@xxxxxxxxxxxxxxxx>, "Kridner, Jason" <jdk@xxxxxx>, "Kooi, Koen" <k-kooi@xxxxxx>, <a href="http://www.8shoxonline.com/shox-monster-shoes-c-5.html"><strong>Nike Shox NZ Shoes</strong></a> <linux-omap@xxxxxxxxxxxxxxx>, Linux USB Mailing List <linux-usb@xxxxxxxxxxxxxxx> In-reply-to: <20110809222012.GB4008@legolas.emea.dhcp.ti.com > On Wed, 10 Aug 2011, Felipe Balbi wrote: > Hi, > > On Tue, Aug 09, 2011 at 02:30:14PM -0400, Jason Kridner wrote: > > On Tue, Aug 9, 2011 at 1:51 PM, Joel A Fernandes <agnel.joel@xxxxxxxxx> wrote: > > > Anyone seen this before? > > > > A lot of the kernel developers don't frequent the beagleboard list. > > If you think it is a general kernel bug, I suspect you want to copy > > linux-omap. > > and linux-usb, and Alan Stern as he's the EHCI maintainer and myself for > the OMAP USB part ;-) > > > > Trying to boot 3.0.0 with OE patches from an SD Card, and with a > > > network cable connected results in the following traceback. > > > Not connecting a network cable makes the errors go away. > > > [ � 99.084899] Unable to handle kernel NULL pointer dereference at > > > virtual address 00000000 > > > [ � <a href="http://www.8shoxonline.com/"><strong>Discount Nike Shox</strong></a> 99.093383] pgd = c0004000 > > > [ � 99.096191] [00000000] *pgd=00000000 > > > [ � 99.099945] Internal error: Oops: 17 [#2] > > > [ � 99.104125] Modules linked in: ipv6 > > > [ � 99.107788] CPU: 0 � �Tainted: G � � �D � � �(3.0.0+ #1) > > > [ � 99.113342] PC is at ehci_quiesce+0xc/0x94 > > > [ � 99.117614] LR is at ehci_stop+0x34/0x8c > > > [ � 99.121734] pc : [<c0325ce4>] � �lr : [<c0328bfc>] � �psr: 200001d3 > > > [ � 99.121734] sp : c064de70 �ip : 00000108 �fp : c06b8624 > > > [ � 99.133728] r10: c064dec0 �r9 : 00000000 �r8 : dee08504 > > > [ � 99.139190] r7 : c0328b94 �r6 : 00000100 �r5 : dee08504 �r4 : dee08608 > > > [ � 99.145996] r3 : 00000000 �r2 : dee086ec �r1 : dee086b8 �r0 : dee08608 > > > [ � 99.152832] Flags: nzCv �IRQs off �FIQs off �Mode SVC_32 �ISA ARM > > > Segment kernel > > > [ � 99.160644] Control: 10c5387d �Table: 9d804019 �DAC: 00000015 > > > [ � 99.166656] Process swapper (pid: 0, stack limit = 0xc064c2f0) > > > [ � 99.172760] Stack: (0xc064de70 to 0xc064e000) > > > [ � 99.288482] [<c0325ce4>] (ehci_quiesce+0xc/0x94) from [<c0328bfc>] > > > (ehci_stop+0x34/0x8c) > > > [ � 99.296936] [<c0328bfc>] (ehci_stop+0x34/0x8c) from [<c007a3d4>] > > > (run_timer_softirq+0x15c/0x1f8) > > > [ � 99.306121] [<c007a3d4>] (run_timer_softirq+0x15c/0x1f8) from > > > [<c064dec0>] (0xc064dec0) > <a href="http://www.8shoxonline.com/specials.html"><strong>Nike Shox Cheap</strong></a> > > [ � 99.314483] Code: c05d7f9a e92d4073 e1a04000 e5903004 (e5933000) > > > [ � 99.320892] ---[ end trace 4ae88755f08e391f ]--- > > > [ � 99.325714] Kernel panic - not syncing: Fatal exception in interrupt I'm puzzled. Why is ehci_stop getting called in a softirq context? That should never happen. It should get called only when the driver is unbound from the controller. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at
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