2011/4/11 Arend van Spriel <arend@xxxxxxxxxxxx>: > On Fri, 08 Apr 2011 21:45:00 +0200, RafaÅ MiÅecki <zajec5@xxxxxxxxx> wrote: > >> Cc: Michael BÃsch <mb@xxxxxxxxx> >> Cc: Larry Finger <Larry.Finger@xxxxxxxxxxxx> >> Cc: George Kashperko <george@xxxxxxxxxxx> >> Cc: Arend van Spriel <arend@xxxxxxxxxxxx> >> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx >> <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx> >> Cc: Russell King <rmk@xxxxxxxxxxxxxxxx> >> Cc: Arnd Bergmann <arnd@xxxxxxxx> >> Cc: linuxdriverproject <devel@xxxxxxxxxxxxxxxxxxxxxx> >> Cc: linux-kernel@xxxxxxxxxxxxxxx <linux-kernel@xxxxxxxxxxxxxxx> >> Signed-off-by: RafaÅ MiÅecki <zajec5@xxxxxxxxx> >> --- >> This is second try for introducing new bus driver. >> V2: Rename to axi >>  ÂUse DEFINE_PCI_DEVICE_TABLE in bridge >>  ÂMake use of pr_fmt and pr_* >>  ÂStore core class >>  ÂRename bridge to not b43 specific >>  ÂReplace magic 0x1000 with BCMAI_CORE_SIZE >>  ÂRemove some old "ssb" names and defines >>  ÂMove BCMAI_ADDR_BASE def >>  ÂAdd drvdata field >> TODO: >> - Interrupts >> - Reloading driver >> --- >> Âdrivers/Kconfig              |  Â2 + >> Âdrivers/Makefile             Â|  Â1 + >> Âinclude/linux/mod_devicetable.h      |  17 ++ >> Âscripts/mod/file2alias.c         Â|  21 ++ > > Hi RafaÅ, > > I tried to apply this patch, but it failed as well. I did the 4 files > above manually and applied partial patch for the new files. > > When I load the module it seems to have succeeded once, but every insmod > attempt I do now fails with following trace: > > Apr 11 16:43:43 arend-laptop kernel: [  61.249239] axi-pci-bridge > 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17 > Apr 11 16:43:43 arend-laptop kernel: [  61.249312] Core 0 found: > ChipCommon (manuf 0x4BF, id 0x800, rev 0x22, class 0x0) > Apr 11 16:43:43 arend-laptop kernel: [  61.249339] Core 1 found: IEEE > 802.11 (manuf 0x4BF, id 0x812, rev 0x17, class 0x0) > Apr 11 16:43:43 arend-laptop kernel: [  61.249400] Core 2 found: PCIe > (manuf 0x4BF, id 0x820, rev 0x0F, class 0x0) > Apr 11 16:43:43 arend-laptop kernel: [  61.279913] Modules linked in: > axi(+) binfmt_misc nouveau ttm drm_kms_helper drm i2c_algo_bit > snd_hda_codec_hdmi snd_hda_codec_idt snd_hda_intel snd_hda_codec > snd_seq_midi snd_hwdep ppdev snd_rawmidi snd_pcm snd_seq_midi_event > parport_pc snd_seq snd_timer snd_seq_device lp pcmcia snd uvcvideo > soundcore snd_page_alloc dell_laptop videodev dell_wmi dcdbas > sparse_keymap intel_ips yenta_socket video pcmcia_rsrc pcmcia_core parport > intel_agp intel_gtt agpgart psmouse btusb bluetooth joydev serio_raw > usbhid hid mmc_block ahci sdhci_pci firewire_ohci sdhci e1000e > firewire_core mmc_core libahci crc_itu_t > Apr 11 16:43:43 arend-laptop kernel: [  61.280052] > Apr 11 16:43:43 arend-laptop kernel: [  61.280366] Pid: 2008, comm: > insmod Not tainted 2.6.39-rc1-staging-next-09270-gb905e26 #1 Dell Inc. > Latitude E6410/07XJP9 > Apr 11 16:43:43 arend-laptop kernel: [  61.281090] EIP: 0060:[<c0213d3d>] > EFLAGS: 00010246 CPU: 1 > Apr 11 16:43:43 arend-laptop kernel: [  61.281812] EIP is at > kfree+0x10d/0x120 Thank you Arend for testing. What you see is some issue with kfree I do not understand. Please take a look at: "Crash with kfree(null) on MacBook? kobject_set_name_vargs" https://lkml.org/lkml/2011/4/10/71 When I call dev_set_name result with new name for device, internal implementation performs "kfree" on *old name*. Of course there was not old name, so kfree is being called on * char pointing to NULL. On my device it does not crash, but on yours and on Andy's it does. We got suggestion to enable SLUB/SLAB debugging. Andy didn't try it yet. Could you spend a moment trying to debug this? -- RafaÅ -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
