Messages in this thread | | | Date | Fri, 8 Sep 2006 00:56:51 -0700 | From | "Miles Lane" <> | Subject | Re: 2.6.18-rc5-git1 + "ieee1394: nodemgr" patches -- BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 |
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On 9/8/06, Stefan Richter <stefanr@s5r6.in-berlin.de> wrote: > Miles Lane wrote: > ... > > Things went pretty well, until I ran > > "pccardctl eject" and then popped out the Firewire card. > ... > > BUG: unable to handle kernel NULL pointer dereference at virtual > > address 00000000 > ... > > EIP is at dv1394_remove_host+0x17/0xad [dv1394] > ... > > Call Trace: > > [<f91788c2>] __unregister_host+0x17/0x79 [ieee1394] > > [<f9178945>] highlevel_remove_host+0x21/0x42 [ieee1394] > > [<f9177e65>] hpsb_remove_host+0x37/0x56 [ieee1394] > > [<f912c9f2>] ohci1394_pci_remove+0x41/0x1cd [ohci1394] > > [<c10c5d24>] pci_device_remove+0x16/0x28 > > [<c111dcbd>] __device_release_driver+0x5a/0x72 > > [<c111de8f>] device_release_driver+0x1b/0x29 > > [<c111d705>] bus_remove_device+0x78/0x8a > > [<c111c8a7>] device_del+0xe9/0x11a > > [<c111c8e0>] device_unregister+0x8/0x10 > > [<c10c3ee5>] pci_remove_bus_device+0x39/0xcf > > [<c10c3f95>] pci_remove_behind_bridge+0x1a/0x2d > > [<f910d5ae>] socket_shutdown+0x89/0xdd [pcmcia_core] > > [<f910d675>] pcmcia_eject_card+0x56/0x65 [pcmcia_core] > ... > > Looks like the last word on > http://bugzilla.kernel.org/show_bug.cgi?id=2228 isn't spoken. Maybe the > bug can be fixed in dv1394 itself, or maybe we need to rework the > ieee1394 core's *_remove_host sequence. > > Checking the 1394 driver stack's conduct during card hot-ejection is in > my long-term to-do list. Hopefully someone else can look at it sooner. > But I suggest you open a new bugzilla bug so we don't lose track. > > I suppose the temporary workaround is to unload dv1394 before card ejection.
Thanks,
I created the bug report: http://bugzilla.kernel.org/show_bug.cgi?id=7121
Best wishes, Miles - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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