[Bug 22897] New: radeon kms crashing usbserial?

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=22897

           Summary: radeon kms crashing usbserial?
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: paulo.miguel.dias at gmail.com
         QAContact: xorg-team at lists.x.org


Im not completely sure but aparently the new kms radeon driver in staging is
making the usbserial (in my case a 3g modem) to crash upon calling the device.
this behaviour is reproducible every time in 2.6.31 rc3, it doesnt happen in
rc2.

Jul 22 16:10:31 kerberos kernel: [  344.869682] ------------[ cut here
]------------
Jul 22 16:10:31 kerberos kernel: [  344.869748] WARNING: at
drivers/usb/serial/usb-serial.c:436 serial_ioctl+0x95/0xa0 [usbserial]()
Jul 22 16:10:31 kerberos kernel: [  344.869756] Hardware name: Aspire 5100
Jul 22 16:10:31 kerberos kernel: [  344.869761] Modules linked in: i2c_dev cbc
aes_i586 aes_generic ramzswap xvmalloc lzo_decompress lzo_compre
ss binfmt_misc ppdev vboxdrv lp parport snd_hda_codec_realtek snd_hda_intel
snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm arc4 snd_
seq_dummy ecb snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq
ath5k snd_timer snd_seq_device mac80211 pcmcia ath snd joydev sou
ndcore yenta_socket rsrc_nonstatic pcmcia_core i2c_piix4 sdhci_pci sdhci k8temp
cfg80211 ati_agp psmouse serio_raw pcspkr snd_page_alloc video
output shpchp acer_wmi led_class reiserfs 8139too 8139cp mii sg sd_mod usbhid
usb_storage option usbserial fbcon tileblit font bitblit softcurs
or radeon i2c_algo_bit ttm drm agpgart
Jul 22 16:10:31 kerberos kernel: [  344.869914] Pid: 3687, comm: NetworkManager
Not tainted 2.6.31-rc3-custom #1
Jul 22 16:10:31 kerberos kernel: [  344.869921] Call Trace:
Jul 22 16:10:31 kerberos kernel: [  344.869943]  [<c055cb90>] ?
printk+0x18/0x20
Jul 22 16:10:31 kerberos kernel: [  344.869969]  [<f82e8705>] ?
serial_ioctl+0x95/0xa0 [usbserial]
Jul 22 16:10:31 kerberos kernel: [  344.869984]  [<c014492c>]
warn_slowpath_common+0x6c/0xc0
Jul 22 16:10:31 kerberos kernel: [  344.870008]  [<f82e8705>] ?
serial_ioctl+0x95/0xa0 [usbserial]
Jul 22 16:10:31 kerberos kernel: [  344.870018]  [<c0144995>]
warn_slowpath_null+0x15/0x20
Jul 22 16:10:31 kerberos kernel: [  344.870041]  [<f82e8705>]
serial_ioctl+0x95/0xa0 [usbserial]
Jul 22 16:10:31 kerberos kernel: [  344.870052]  [<c012f4e0>] ?
__wake_up_common+0x40/0x70
Jul 22 16:10:31 kerberos kernel: [  344.870074]  [<f82e8670>] ?
serial_ioctl+0x0/0xa0 [usbserial]
Jul 22 16:10:31 kerberos kernel: [  344.870085]  [<c0377f12>]
tty_ioctl+0x82/0x890
Jul 22 16:10:31 kerberos kernel: [  344.870155]  [<f83d9362>] ?
radeon_fence_process+0x52/0x60 [radeon]
Jul 22 16:10:31 kerberos kernel: [  344.870164]  [<c0377e90>] ?
tty_ioctl+0x0/0x890
Jul 22 16:10:31 kerberos kernel: [  344.870176]  [<c01f4e48>]
vfs_ioctl+0x28/0x80
Jul 22 16:10:31 kerberos kernel: [  344.870184]  [<c01f4fda>]
do_vfs_ioctl+0x6a/0x5e0
Jul 22 16:10:31 kerberos kernel: [  344.870197]  [<c0470386>] ?
sys_send+0x36/0x40
Jul 22 16:10:31 kerberos kernel: [  344.870207]  [<c04709ad>] ?
sys_socketcall+0x1cd/0x2a0
Jul 22 16:10:31 kerberos kernel: [  344.870217]  [<c01f55b3>]
sys_ioctl+0x63/0x70
Jul 22 16:10:31 kerberos kernel: [  344.870229]  [<c0103c94>]
sysenter_do_call+0x12/0x28
Jul 22 16:10:31 kerberos kernel: [  344.870237] ---[ end trace 352de30743b9a960
]---

could the radeon devs take a look and see if him right,or this is in fact a
usbserial bug, in that case ill open a lkms bug report.

best regards


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