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SubjectBUG: scheduling while atomic upon USB HSDPA modem insertion
From
Hi all,

just noticed that I get this upon plugging my USB HSDPA USB modem. Yes,
it's a zeroCD device. Here's the (hopefully) relevant dmesg output. The
machine is a 64bit Dell Latitude E6500, the distro I'm using is Ubuntu
9.04, the kernel is a 2.6.29 vanilla one.

Best regards
Mauro Andreolini

[ 3154.033123] BUG: scheduling while atomic: usb_id/11592/0x10010000
[ 3154.033126] Modules linked in: isofs vmnet parport_pc vsock vmci vmmon
ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt i915 drm
i2c_algo_bit binfmt_misc ppdev btusb bnep ipt_MASQUERADE iptable_nat
nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT
xt_tcpudp vboxnetflt iptable_filter ip_tables vboxdrv x_tables bridge stp
kvm_intel kvm option lp parport snd_hda_codec_intelhdmi snd_hda_codec_idt
snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm
snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi arc4 snd_seq_midi_event
ecb joydev snd_seq snd_timer iwlagn pcmcia snd_seq_device iwlcore uvcvideo
videodev mac80211 psmouse v4l1_compat sdhci_pci sdhci iTCO_wdt
yenta_socket rsrc_nonstatic snd pcspkr serio_raw ricoh_mmc
v4l2_compat_ioctl32 led_class dcdbas intel_agp usbhid iTCO_vendor_support
pcmcia_core video soundcore snd_page_alloc cfg80211 output usb_storage
ohci1394 ieee1394 ehci_hcd uhci_hcd e1000e fuse [last unloaded: vmnet]
[ 3154.033179] CPU 0:
[ 3154.033180] Modules linked in: isofs vmnet parport_pc vsock vmci vmmon
ppp_deflate zlib_deflate bsd_comp ppp_async crc_ccitt i915 drm
i2c_algo_bit binfmt_misc ppdev btusb bnep ipt_MASQUERADE iptable_nat
nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT
xt_tcpudp vboxnetflt iptable_filter ip_tables vboxdrv x_tables bridge stp
kvm_intel kvm option lp parport snd_hda_codec_intelhdmi snd_hda_codec_idt
snd_hda_intel snd_hda_codec snd_pcm_oss snd_mixer_oss snd_pcm
snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi arc4 snd_seq_midi_event
ecb joydev snd_seq snd_timer iwlagn pcmcia snd_seq_device iwlcore uvcvideo
videodev mac80211 psmouse v4l1_compat sdhci_pci sdhci iTCO_wdt
yenta_socket rsrc_nonstatic snd pcspkr serio_raw ricoh_mmc
v4l2_compat_ioctl32 led_class dcdbas intel_agp usbhid iTCO_vendor_support
pcmcia_core video soundcore snd_page_alloc cfg80211 output usb_storage
ohci1394 ieee1394 ehci_hcd uhci_hcd e1000e fuse [last unloaded: vmnet]
[ 3154.033218] Pid: 11592, comm: usb_id Not tainted 2.6.29 #1 Latitude E6500
[ 3154.033220] RIP: 0010:[<ffffffff802f60a6>] [<ffffffff802f60a6>]
__follow_mount+0x46/0xb0
[ 3154.033230] RSP: 0018:ffff8800c3507c08 EFLAGS: 00000202
[ 3154.033232] RAX: 000000000000000c RBX: ffff8800c3507c28 RCX:
0000000000000002
[ 3154.033233] RDX: 0000000000000000 RSI: ffff88011f402000 RDI:
ffff880113c1f6c0
[ 3154.033234] RBP: ffffffff8021320e R08: 0000000000000000 R09:
0000000000000001
[ 3154.033235] R10: 0000000000000000 R11: 0000000000000246 R12:
ffff8800c3507bc8
[ 3154.033236] R13: ffffffff808f2a00 R14: 0000000000000292 R15:
ffff8800c3507b33
[ 3154.033238] FS: 00007faadc0016f0(0000) GS:ffffffff80a35000(0000)
knlGS:0000000000000000
[ 3154.033239] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3154.033240] CR2: 00007fffe4027f88 CR3: 0000000013d22000 CR4:
00000000000026a0
[ 3154.033242] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 3154.033243] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 3154.033244] Call Trace:
[ 3154.033246] [<ffffffff802f60cb>] ? __follow_mount+0x6b/0xb0
[ 3154.033248] [<ffffffff802f70f7>] ? do_lookup+0x147/0x250
[ 3154.033250] [<ffffffff802f7343>] ? __link_path_walk+0x143/0xee0
[ 3154.033252] [<ffffffff802f6170>] ? path_to_nameidata+0x20/0x60
[ 3154.033253] [<ffffffff802f830e>] ? path_walk+0x6e/0xe0
[ 3154.033255] [<ffffffff802f8524>] ? do_path_lookup+0xe4/0x200
[ 3154.033258] [<ffffffff802eda03>] ? get_empty_filp+0x83/0x180
[ 3154.033259] [<ffffffff802f8715>] ? path_lookup_open+0x65/0xd0
[ 3154.033261] [<ffffffff802f92f9>] ? do_filp_open+0xb9/0x940
[ 3154.033264] [<ffffffff802baa0b>] ? free_hot_page+0xb/0x10
[ 3154.033265] [<ffffffff802baa8d>] ? free_pages+0x3d/0x50
[ 3154.033268] [<ffffffff80305ce1>] ? mntput_no_expire+0x31/0x170
[ 3154.033269] [<ffffffff80303f31>] ? alloc_fd+0x121/0x150
[ 3154.033271] [<ffffffff802ea4a8>] ? do_sys_open+0x78/0x100
[ 3154.033273] [<ffffffff802ea55b>] ? sys_open+0x1b/0x20
[ 3154.033275] [<ffffffff8021272a>] ? system_call_fastpath+0x16/0x1b



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