Hello, On Sat, Nov 9, 2013 at 1:02 PM, Martin Vogt <mvogt1@xxxxxxxxx> wrote: > The device seems to work, but when I disconnect/reconncet the USB > connection I get occasionally a kernel GPF, which needs a reboot. No. I think the GPF only happens if an application has an open file descriptor. Just tested ~5 dis/reconnect USB without problem, started an application which opens i2c-7 USB disconnect->crash. regards, Martin > > It happens usually in around ~5 tries. > > regards, > > Martin > > > [ 4651.614201] usb 2-1.6: USB disconnect, device number 22 > [ 4651.619197] general protection fault: 0000 [#1] PREEMPT SMP > [ 4651.619203] Modules linked in: i2c_tiny_usb i2c_dev cdc_acm > binfmt_misc fuse af_packet rfcomm bnep btusb bluetooth > snd_hda_codec_hdmi nvidia(PO) snd_hda_codec_realtek acpi_cpufreq mperf > coretemp kvm_intel kvm crc32c_intel ghash_clmulni_intel iTCO_wdt > iTCO_vendor_support aesni_intel ablk_helper cryptd lrw aes_x86_64 xts > gf128mul snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq > snd_timer snd_seq_device microcode snd sg sr_mod cdrom r8169 pcspkr > eeepc_wmi i2c_i801 serio_raw asus_wmi sparse_keymap rfkill mxm_wmi > lpc_ich mfd_core shpchp soundcore snd_page_alloc mei pci_hotplug video > wmi button joydev autofs4 dm_mod linear thermal fan processor > thermal_sys scsi_dh_alua scsi_dh_hp_sw scsi_dh_rdac scsi_dh_emc > scsi_dh [last unloaded: osif] > [ 4651.619270] CPU 2 > [ 4651.619276] Pid: 24398, comm: texplorer Tainted: P O > 3.7.10-1.16-desktop #1 System manufacturer System Product Name/P8Z77-M > PRO > [ 4651.619280] RIP: 0010:[<ffffffff810a4e0c>] [<ffffffff810a4e0c>] > module_put+0x1c/0xe0 > [ 4651.619347] Call Trace: > [ 4651.619361] [<ffffffffa0264021>] i2cdev_release+0x21/0x50 [i2c_dev] > [ 4651.619379] [<ffffffff8117074d>] __fput+0xcd/0x230 > [ 4651.619388] [<ffffffff81064f74>] task_work_run+0xb4/0xd0 > [ 4651.619398] [<ffffffff8104aaa9>] do_exit+0x199/0x960 > [ 4651.619404] [<ffffffff8104b598>] do_group_exit+0x38/0xa0 > [ 4651.619412] [<ffffffff8105a3e2>] get_signal_to_deliver+0x2a2/0x620 > [ 4651.619421] [<ffffffff8100239e>] do_signal+0x4e/0x990 > [ 4651.619430] [<ffffffff81002d98>] do_notify_resume+0x98/0xc0 > [ 4651.619439] [<ffffffff8159ed6a>] int_signal+0x12/0x17 > [ 4651.619453] [<00007f0915eb73d5>] 0x7f0915eb73d4 > [ 4651.619455] Code: 5e 41 5f c3 66 66 2e 0f 1f 84 00 00 00 00 00 41 > 54 48 85 ff 55 48 89 fd 53 74 4b 65 48 8b 04 25 30 b9 00 00 83 80 44 > e0 ff ff 01 <48> 8b 87 50 02 00 00 65 48 ff 40 08 4c 8b 64 24 18 0f 1f > 44 00 > [ 4651.619503] RIP [<ffffffff810a4e0c>] module_put+0x1c/0xe0 > [ 4651.619508] RSP <ffff88020e837c58> > [ 4651.619512] ---[ end trace 64acf5bd4c614347 ]--- > [ 4651.619514] Fixing recursive fault but reboot is needed! > [ 4651.619517] BUG: scheduling while atomic: texplorer/24398/0x00000002 > [ 4651.619519] Modules linked in: i2c_tiny_usb i2c_dev cdc_acm > binfmt_misc fuse af_packet rfcomm bnep btusb bluetooth > snd_hda_codec_hdmi nvidia(PO) snd_hda_codec_realtek acpi_cpufreq mperf > coretemp kvm_intel kvm crc32c_intel ghash_clmulni_intel iTCO_wdt > iTCO_vendor_support aesni_intel ablk_helper cryptd lrw aes_x86_64 xts > gf128mul snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq > snd_timer snd_seq_device microcode snd sg sr_mod cdrom r8169 pcspkr > eeepc_wmi i2c_i801 serio_raw asus_wmi sparse_keymap rfkill mxm_wmi > lpc_ich mfd_core shpchp soundcore snd_page_alloc mei pci_hotplug video > wmi button joydev autofs4 dm_mod linear thermal fan processor > thermal_sys scsi_dh_alua scsi_dh_hp_sw scsi_dh_rdac scsi_dh_emc > scsi_dh [last unloaded: osif] > [ 4651.619580] Pid: 24398, comm: texplorer Tainted: P D O > 3.7.10-1.16-desktop #1 > sktop #1 > [ 4651.619582] Call Trace: > [ 4651.619592] [<ffffffff81004818>] dump_trace+0x88/0x300 > [ 4651.619600] [<ffffffff8158af33>] dump_stack+0x69/0x6f > [ 4651.619609] [<ffffffff8158ce34>] __schedule_bug+0x48/0x54 > [ 4651.619618] [<ffffffff81596714>] thread_return+0x450/0x45c > [ 4651.619628] [<ffffffff8104b260>] do_exit+0x950/0x960 > [ 4651.619635] [<ffffffff81598de9>] oops_end+0x99/0xe0 > [ 4651.619642] [<ffffffff815981c8>] general_protection+0x28/0x30 > [ 4651.619650] [<ffffffff810a4e0c>] module_put+0x1c/0xe0 > [ 4651.619658] [<ffffffffa0264021>] i2cdev_release+0x21/0x50 [i2c_dev] > [ 4651.619668] [<ffffffff8117074d>] __fput+0xcd/0x230 > [ 4651.619675] [<ffffffff81064f74>] task_work_run+0xb4/0xd0 > [ 4651.619683] [<ffffffff8104aaa9>] do_exit+0x199/0x960 > [ 4651.619690] [<ffffffff8104b598>] do_group_exit+0x38/0xa0 > [ 4651.619698] [<ffffffff8105a3e2>] get_signal_to_deliver+0x2a2/0x620 > [ 4651.619708] [<ffffffff8100239e>] do_signal+0x4e/0x990 > [ 4651.619714] [<ffffffff81002d98>] do_notify_resume+0x98/0xc0 > [ 4651.619719] [<ffffffff8159ed6a>] int_signal+0x12/0x17 > [ 4651.619728] [<00007f0915eb73d5>] 0x7f0915eb73d4 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
