Hello,
I had occassional oopses with 2.6.31.1 and earlier but 2.6.31.2 made things much
worse. I got an oops each time (well twice.. I am not so brave) I used the device
and both made the computer completely unresponsive.
Going back to 2.6.31.1 made the device useable again.
Rerpoducing it is very easy: plugin a ZTE K3565Z GSM/UMTS modem, start minicom
on /dev/ttyUSB1 and exit minicom.
Oct 9 14:22:01 localhost kernel: # moon phase: 0.682612 visible 0.705436
Oct 9 14:35:44 localhost kernel: [12187.611020] usb 5-6: new high speed USB device using ehci_hcd and address 3
Oct 9 14:35:45 localhost kernel: [12187.737211] usb 5-6: New USB device found, idVendor=19d2, idProduct=0063
Oct 9 14:35:45 localhost kernel: [12187.737215] usb 5-6: New USB device strings: Mfr=2, Product=1, SerialNumber=0
Oct 9 14:35:45 localhost kernel: [12187.737218] usb 5-6: Product: ZTE CDMA Technologies MSM
Oct 9 14:35:45 localhost kernel: [12187.737220] usb 5-6: Manufacturer: ZTE,Incorporated
Oct 9 14:35:45 localhost kernel: [12187.737360] usb 5-6: configuration #1 chosen from 1 choice
Oct 9 14:35:45 localhost kernel: [12187.743657] scsi4 : SCSI emulation for USB Mass Storage devices
Oct 9 14:35:45 localhost kernel: [12187.987172] usbcore: registered new interface driver usbserial
Oct 9 14:35:45 localhost kernel: [12187.988293] USB Serial support registered for generic
Oct 9 14:35:45 localhost kernel: [12187.988416] usbcore: registered new interface driver usbserial_generic
Oct 9 14:35:45 localhost kernel: [12187.988419] usbserial: USB Serial Driver core
Oct 9 14:35:45 localhost kernel: [12188.002928] USB Serial support registered for GSM modem (1-port)
Oct 9 14:35:45 localhost kernel: [12188.002983] option 5-6:1.0: GSM modem (1-port) converter detected
Oct 9 14:35:45 localhost kernel: [12188.003273] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB0
Oct 9 14:35:45 localhost kernel: [12188.003296] option 5-6:1.1: GSM modem (1-port) converter detected
Oct 9 14:35:45 localhost kernel: [12188.003402] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB1
Oct 9 14:35:45 localhost kernel: [12188.003424] option 5-6:1.2: GSM modem (1-port) converter detected
Oct 9 14:35:45 localhost kernel: [12188.003521] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB2
Oct 9 14:35:45 localhost kernel: [12188.003542] option 5-6:1.3: GSM modem (1-port) converter detected
Oct 9 14:35:45 localhost kernel: [12188.003672] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB3
Oct 9 14:35:45 localhost kernel: [12188.003694] option 5-6:1.4: GSM modem (1-port) converter detected
Oct 9 14:35:45 localhost kernel: [12188.003811] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB4
Oct 9 14:35:45 localhost kernel: [12188.003840] usbcore: registered new interface driver option
Oct 9 14:35:45 localhost kernel: [12188.003843] option: v0.7.2:USB Driver for GSM modems
Oct 9 14:35:50 localhost kernel: [12192.752771] scsi 4:0:0:0: Direct-Access ZTE MMC Storage 2.31 PQ: 0 ANSI: 2
Oct 9 14:35:50 localhost kernel: [12192.753936] sd 4:0:0:0: Attached scsi generic sg3 type 0
Oct 9 14:35:50 localhost kernel: [12192.766454] sd 4:0:0:0: [sdc] Attached SCSI removable disk
Oct 9 14:42:01 localhost kernel: # moon phase: 0.683111 visible 0.704007
Oct 9 14:48:47 localhost kernel: [12970.277300] BUG: unable to handle kernel paging request at e6d8c878
Oct 9 14:48:47 localhost kernel: [12970.277306] IP: [<c0604535>] tty_port_close_start+0xab/0x140
Oct 9 14:48:47 localhost kernel: [12970.277315] *pde = 00196067 *pte = 26d8c160
Oct 9 14:48:47 localhost kernel: [12970.277319] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
Oct 9 14:48:47 localhost kernel: [12970.277324] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-6/5-6:1.5/host4/target4:0:0/4:0:0:0/block/sdc/capability
Oct 9 14:48:47 localhost kernel: [12970.277329] Modules linked in: option usbserial i915 drm i2c_algo_bit video output nfsd lockd nfs_acl bridge auth_rpcgss exportfs stp llc bnep sco l2cap bluetooth autofs4 coretemp w83627ehf hwmon_vid hwmon fuse tun sunrpc ipv6 binfmt_misc nls_utf8 isofs loop dm_multipath uinput deflate zlib_deflate ctr twofish twofish_common camellia serpent blowfish cast5 rt2500usb des_generic xcbc arc4 rmd160 ecb crypto_null snd_hda_codec_realtek snd_hda_intel rt73usb snd_hda_codec crc_itu_t xt_multiport rt2x00usb nf_conntrack_ipv4 rt2x00lib snd_hwdep nf_defrag_ipv4 snd_seq_dummy xt_state snd_seq_oss nf_conntrack led_class snd_seq_midi_event input_polldev snd_seq mac80211 xt_tcpudp snd_seq_device ipt_LOG snd_pcm_oss xt_limit snd_mixer_oss snd_pcm iptable_filter ip_tables snd_timer cfg80211 x_tables ppdev snd parport_pc iTCO_wdt i2c_i801 iTCO_vendor_support rtc_cmos parport soundcore r8169 i2c_core intel_agp rfkill agpgart mii processor snd_page_alloc pcspkr thermal button ata_generic pata_acpi
Oct 9 14:48:47 localhost kernel: sha256_generic cbc aes_i586 aes_generic dm_crypt dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod ehci_hcd [last unloaded: microcode]
Oct 9 14:48:47 localhost kernel: [12970.277444]
Oct 9 14:48:47 localhost kernel: [12970.277447] Pid: 15522, comm: minicom Not tainted (2.6.31.2v0 #7) To Be Filled By O.E.M.
Oct 9 14:48:47 localhost kernel: [12970.277450] EIP: 0060:[<c0604535>] EFLAGS: 00210046 CPU: 1
Oct 9 14:48:47 localhost kernel: [12970.277453] EIP is at tty_port_close_start+0xab/0x140
Oct 9 14:48:47 localhost kernel: [12970.277456] EAX: e6d8c878 EBX: eb765f00 ECX: 000004bc EDX: 00009e01
Oct 9 14:48:47 localhost kernel: [12970.277458] ESI: e5d8c804 EDI: ea0b3000 EBP: f007fe9c ESP: f007fe84
Oct 9 14:48:47 localhost kernel: [12970.277460] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Oct 9 14:48:47 localhost kernel: [12970.277464] Process minicom (pid: 15522, ti=f007e000 task=f05f9210 task.ti=f007e000)
Oct 9 14:48:47 localhost kernel: [12970.277466] Stack:
Oct 9 14:48:47 localhost kernel: [12970.277467] ffffffff e5d8c80c 00200296 e5d8c804 e5d8c800 ea0b3000 f007feb4 f81317bb
Oct 9 14:48:47 localhost kernel: [12970.277475] <0> eb765f00 ea0b3000 00000001 00000000 f007ff48 c05ff23f 00000000 eb765f00
Oct 9 14:48:47 localhost kernel: [12970.277483] <0> f05f9210 e5e2f168 00200046 00000001 00000000 00000000 0000005b 00000000
Oct 9 14:48:47 localhost kernel: [12970.277492] Call Trace:
Oct 9 14:48:47 localhost kernel: [12970.277501] [<f81317bb>] ? serial_close+0x57/0x7c [usbserial]
Oct 9 14:48:47 localhost kernel: [12970.277504] [<c05ff23f>] ? tty_release_dev+0x17c/0x400
Oct 9 14:48:47 localhost kernel: [12970.277508] [<c05ff4d5>] ? tty_release+0x12/0x1c
Oct 9 14:48:47 localhost kernel: [12970.277513] [<c04c02d1>] ? __fput+0xee/0x1a0
Oct 9 14:48:47 localhost kernel: [12970.277517] [<c04c039c>] ? fput+0x19/0x1b
Oct 9 14:48:47 localhost kernel: [12970.277521] [<c04bd83f>] ? filp_close+0x51/0x5b
Oct 9 14:48:47 localhost kernel: [12970.277525] [<c04bd8b3>] ? sys_close+0x6a/0xa4
Oct 9 14:48:47 localhost kernel: [12970.277529] [<c040321d>] ? syscall_call+0x7/0xb
Oct 9 14:48:47 localhost kernel: [12970.277531] Code: 55 f0 8b 45 ec e8 2c 5a 13 00 8b 46 04 8b 50 0c 31 c0 85 d2 0f 84 9e 00 00 00 89 f0 ff d2 31 c0 e9 93 00 00 00 8d 86 74 00 00 01 <f0> 80 8e 74 00 00 01 01 80 8f 28 02 00 00 20 8b 55 f0 8b 45 ec
Oct 9 14:48:47 localhost kernel: [12970.277581] EIP: [<c0604535>] tty_port_close_start+0xab/0x140 SS:ESP 0068:f007fe84
Oct 9 14:48:47 localhost kernel: [12970.277586] CR2: 00000000e6d8c878
Oct 9 14:48:47 localhost kernel: [12970.277590] ---[ end trace 74704d89c7b3e3e1 ]---
########################
Another attempt:
Oct 9 01:06:14 localhost kernel: [10287.569017] usb 5-6: new high speed USB device using ehci_hcd and address 5
Oct 9 01:06:14 localhost kernel: [10287.695202] usb 5-6: New USB device found, idVendor=19d2, idProduct=0063
Oct 9 01:06:14 localhost kernel: [10287.695205] usb 5-6: New USB device strings: Mfr=2, Product=1, SerialNumber=0
Oct 9 01:06:14 localhost kernel: [10287.695208] usb 5-6: Product: ZTE CDMA Technologies MSM
Oct 9 01:06:14 localhost kernel: [10287.695210] usb 5-6: Manufacturer: ZTE,Incorporated
Oct 9 01:06:14 localhost kernel: [10287.695354] usb 5-6: configuration #1 chosen from 1 choice
Oct 9 01:06:14 localhost kernel: [10287.700685] option 5-6:1.0: GSM modem (1-port) converter detected
Oct 9 01:06:14 localhost kernel: [10287.700827] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB0
Oct 9 01:06:14 localhost kernel: [10287.700977] option 5-6:1.1: GSM modem (1-port) converter detected
Oct 9 01:06:14 localhost kernel: [10287.701099] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB1
Oct 9 01:06:14 localhost kernel: [10287.701248] option 5-6:1.2: GSM modem (1-port) converter detected
Oct 9 01:06:14 localhost kernel: [10287.701356] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB2
Oct 9 01:06:14 localhost kernel: [10287.701501] option 5-6:1.3: GSM modem (1-port) converter detected
Oct 9 01:06:14 localhost kernel: [10287.701631] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB3
Oct 9 01:06:14 localhost kernel: [10287.701805] option 5-6:1.4: GSM modem (1-port) converter detected
Oct 9 01:06:14 localhost kernel: [10287.701921] usb 5-6: GSM modem (1-port) converter now attached to ttyUSB4
Oct 9 01:06:14 localhost kernel: [10287.710886] scsi6 : SCSI emulation for USB Mass Storage devices
Oct 9 01:06:19 localhost kernel: [10292.714388] scsi 6:0:0:0: Direct-Access ZTE MMC Storage 2.31 PQ: 0 ANSI: 2
Oct 9 01:06:19 localhost kernel: [10292.716826] sd 6:0:0:0: Attached scsi generic sg3 type 0
Oct 9 01:06:19 localhost kernel: [10292.746501] sd 6:0:0:0: [sdc] Attached SCSI removable disk
Oct 9 01:08:44 localhost kernel: [10437.317161] BUG: unable to handle kernel paging request at f388a078
Oct 9 01:08:44 localhost kernel: [10437.317167] IP: [<c0604535>] tty_port_close_start+0xab/0x140
Oct 9 01:08:44 localhost kernel: [10437.317177] *pde = 001c9067 *pte = 3388a160
Oct 9 01:08:44 localhost kernel: [10437.317181] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
Oct 9 01:08:44 localhost kernel: [10437.317185] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb5/5-6/5-6:1.5/host6/target6:0:0/6:0:0:0/block/sdc/capability
Oct 9 01:08:44 localhost kernel: [10437.317190] Modules linked in: ppp_deflate ppp_async crc_ccitt ppp_generic slhc option usbserial authenc esp4 xfrm4_mode_transport i915 drm i2c_algo_bit video output nfsd lockd nfs_acl auth_rpcgss bridge exportfs stp llc bnep sco l2cap bluetooth autofs4 coretemp w83627ehf hwmon_vid hwmon fuse tun sunrpc ipv6 binfmt_misc nls_utf8 isofs loop dm_multipath uinput deflate zlib_deflate ctr twofish twofish_common camellia serpent blowfish cast5 des_generic rt2500usb xcbc arc4 rmd160 ecb crypto_null xt_multiport rt73usb snd_hda_codec_realtek nf_conntrack_ipv4 crc_itu_t snd_hda_intel nf_defrag_ipv4 rt2x00usb xt_state snd_hda_codec rt2x00lib nf_conntrack snd_hwdep snd_seq_dummy led_class snd_seq_oss input_polldev xt_tcpudp snd_seq_midi_event mac80211 snd_seq ipt_LOG xt_limit snd_seq_device snd_pcm_oss iptable_filter snd_mixer_oss ip_tables snd_pcm x_tables cfg80211 intel_agp snd_timer iTCO_wdt i2c_i801 snd ppdev iTCO_vendor_support agpgart parport_pc rfkill i2c_core r8169 parport soundcor
Oct 9 01:08:44 localhost kernel: e processor snd_page_alloc rtc_cmos mii pcspkr thermal button ata_generic pata_acpi sha256_generic cbc aes_i586 aes_generic dm_crypt dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod ehci_hcd [last unloaded: microcode]
Oct 9 01:08:44 localhost kernel: [10437.317314]
Oct 9 01:08:44 localhost kernel: [10437.317318] Pid: 6827, comm: tail Not tainted (2.6.31.2v0 #7) To Be Filled By O.E.M.
Oct 9 01:08:44 localhost kernel: [10437.317321] EIP: 0060:[<c0604535>] EFLAGS: 00210046 CPU: 1
Oct 9 01:08:44 localhost kernel: [10437.317324] EIP is at tty_port_close_start+0xab/0x140
Oct 9 01:08:44 localhost kernel: [10437.317327] EAX: f388a078 EBX: ec14dd80 ECX: 00003441 EDX: 00000501
Oct 9 01:08:44 localhost kernel: [10437.317329] ESI: f288a004 EDI: c380b000 EBP: f6763d24 ESP: f6763d0c
Oct 9 01:08:44 localhost kernel: [10437.317331] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Oct 9 01:08:44 localhost kernel: [10437.317334] Process tail (pid: 6827, ti=f6762000 task=c3802420 task.ti=f6762000)
Oct 9 01:08:44 localhost kernel: [10437.317336] Stack:
Oct 9 01:08:44 localhost kernel: [10437.317338] f67d36c0 f288a00c 00200296 f288a004 f288a000 c380b000 f6763d3c fc79d7bb
Oct 9 01:08:44 localhost kernel: [10437.317346] <0> ec14dd80 c380b000 00000003 00000000 f6763dd0 c05ff23f 00000000 ec14dd80
Oct 9 01:08:44 localhost kernel: [10437.317354] <0> f6763d64 e8bef990 00000006 c3802420 00000000 c04549bc c3802900 00000000
Oct 9 01:08:44 localhost kernel: [10437.317363] Call Trace:
Oct 9 01:08:44 localhost kernel: [10437.317372] [<fc79d7bb>] ? serial_close+0x57/0x7c [usbserial]
Oct 9 01:08:44 localhost kernel: [10437.317376] [<c05ff23f>] ? tty_release_dev+0x17c/0x400
Oct 9 01:08:44 localhost kernel: [10437.317381] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd
Oct 9 01:08:44 localhost kernel: [10437.317385] [<c0454ab9>] ? debug_check_no_locks_freed+0xfb/0x113
Oct 9 01:08:44 localhost kernel: [10437.317389] [<c05ff4d5>] ? tty_release+0x12/0x1c
Oct 9 01:08:44 localhost kernel: [10437.317393] [<c04c02d1>] ? __fput+0xee/0x1a0
Oct 9 01:08:44 localhost kernel: [10437.317396] [<c04c039c>] ? fput+0x19/0x1b
Oct 9 01:08:44 localhost kernel: [10437.317400] [<c04bd83f>] ? filp_close+0x51/0x5b
Oct 9 01:08:44 localhost kernel: [10437.317405] [<c043545f>] ? put_files_struct+0x68/0xaa
Oct 9 01:08:44 localhost kernel: [10437.317408] [<c04354d8>] ? exit_files+0x37/0x3c
Oct 9 01:08:44 localhost kernel: [10437.317411] [<c0436ae9>] ? do_exit+0x1a8/0x5b3
Oct 9 01:08:44 localhost kernel: [10437.317415] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd
Oct 9 01:08:44 localhost kernel: [10437.317420] [<c0739f37>] ? _spin_unlock_irq+0x22/0x2b
Oct 9 01:08:44 localhost kernel: [10437.317423] [<c0436f52>] ? do_group_exit+0x5e/0x85
Oct 9 01:08:44 localhost kernel: [10437.317428] [<c0440217>] ? get_signal_to_deliver+0x34b/0x364
Oct 9 01:08:44 localhost kernel: [10437.317432] [<c04025a9>] ? do_notify_resume+0x77/0x6e2
Oct 9 01:08:44 localhost kernel: [10437.317436] [<c06034ee>] ? put_ldisc+0x46/0x9e
Oct 9 01:08:44 localhost kernel: [10437.317439] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd
Oct 9 01:08:44 localhost kernel: [10437.317443] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd
Oct 9 01:08:44 localhost kernel: [10437.317446] [<c0603598>] ? tty_ldisc_deref+0x8/0xa
Oct 9 01:08:44 localhost kernel: [10437.317450] [<c05fd27d>] ? tty_read+0x70/0x9c
Oct 9 01:08:44 localhost kernel: [10437.317453] [<c0403093>] ? resume_userspace+0x17/0x2c
Oct 9 01:08:44 localhost kernel: [10437.317458] [<c05a9294>] ? trace_hardirqs_off_thunk+0xc/0x10
Oct 9 01:08:44 localhost kernel: [10437.317461] [<c0403093>] ? resume_userspace+0x17/0x2c
Oct 9 01:08:44 localhost kernel: [10437.317465] [<c0403320>] ? work_notifysig+0x13/0x1b
Oct 9 01:08:44 localhost kernel: [10437.317467] Code: 55 f0 8b 45 ec e8 2c 5a 13 00 8b 46 04 8b 50 0c 31 c0 85 d2 0f 84 9e 00 00 00 89 f0 ff d2 31 c0 e9 93 00 00 00 8d 86 74 00 00 01 <f0> 80 8e 74 00 00 01 01 80 8f 28 02 00 00 20 8b 55 f0 8b 45 ec
Oct 9 01:08:44 localhost kernel: [10437.317517] EIP: [<c0604535>] tty_port_close_start+0xab/0x140 SS:ESP 0068:f6763d0c
Oct 9 01:08:44 localhost kernel: [10437.317522] CR2: 00000000f388a078
Oct 9 01:08:44 localhost kernel: [10437.317525] ---[ end trace a1cfbe7596a49444 ]---
Oct 9 01:08:44 localhost kernel: [10437.317527] Fixing recursive fault but reboot is needed!
######################
Older issue in 2.6.31.1, which seems very similar to what I found in the mailing lists
archives.
Anyway here is how that one happened:
- plugged in USB GSM/GPRS modem ZTE K3565-Z
- started minicom, open modem port
- removed USB device while modem port still open
- minicom loops repeating this message:
Device /dev/ttyUSB1 access failed: No such file or directory
- kill -STOP minicom
- kill -9 minicom
[48904.246992] BUG: unable to handle kernel NULL pointer dereference at 0000001c
[48904.246999] IP: [<fba359d0>] serial_do_free+0x19/0x58 [usbserial]
[48904.247010] *pde = 00000000
[48904.247014] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[48904.247018] last sysfs file: /sys/devices/system/cpu/sched_mc_power_savings
[48904.247022] Modules linked in: option usbserial ppp_deflate ppp_async crc_cci
tt ppp_generic slhc authenc esp4 xfrm4_mode_transport i915 drm i2c_algo_bit vide
o output nfsd lockd nfs_acl auth_rpcgss bridge exportfs stp llc bnep sco l2cap b
luetooth autofs4 coretemp w83627ehf hwmon_vid hwmon fuse tun sunrpc ipv6 binfmt_
misc nls_utf8 isofs loop dm_multipath uinput deflate zlib_deflate ctr twofish tw
ofish_common camellia serpent blowfish cast5 des_generic xcbc rt2500usb rmd160 a
rc4 ecb crypto_null xt_multiport snd_hda_codec_realtek nf_conntrack_ipv4 nf_defr
ag_ipv4 rt73usb snd_hda_intel xt_state crc_itu_t snd_hda_codec nf_conntrack rt2x
00usb rt2x00lib snd_hwdep snd_seq_dummy xt_tcpudp snd_seq_oss ipt_LOG led_class
xt_limit snd_seq_midi_event input_polldev snd_seq mac80211 iptable_filter snd_se
q_device ip_tables snd_pcm_oss x_tables snd_mixer_oss snd_pcm ppdev iTCO_wdt snd
_timer cfg80211 parport_pc snd i2c_i801 iTCO_vendor_support r8169 intel_agp parp
ort soundcore agpgart i2c_core rtc_cmos snd_page_alloc processor mii rfkill ther
mal button pcspkr ata_generic pata_acpi sha256_generic cbc aes_i586 aes_generic
dm_crypt dm_snapshot dm_zero dm_mirror dm_region_hash dm_log dm_mod ehci_hcd [la
st unloaded: microcode]
[48904.247142]
[48904.247142] Pid: 9403, comm: minicom Not tainted (2.6.31.1v0 #6) To Be Filled
By O.E.M.
[48904.247142] EIP: 0060:[<fba359d0>] EFLAGS: 00210246 CPU: 0
[48904.247142] EIP is at serial_do_free+0x19/0x58 [usbserial]
[48904.247142] EAX: 00000000 EBX: e926a200 ECX: fba35a0f EDX: f47b7400
[48904.247142] ESI: e926a238 EDI: e9062800 EBP: efce9d24 ESP: efce9d18
[48904.247142] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[48904.247142] Process minicom (pid: 9403, ti=efce8000 task=f6696c60 task.ti=efc
e8000)
[48904.247142] Stack:
[48904.247142] e9062800 f47b7400 e9062800 efce9d3c fba35a8e ec1629c0 e9062800 0
0000001
[48904.247142] <0> 00000000 efce9dd0 c05ff15f 00000000 ec1629c0 efce9d64 f64810c
8 00000006
[48904.247142] <0> f6696c60 00000000 c045497c f6697140 00000000 00000001 f64810c
8 00200046
[48904.247142] Call Trace:
[48904.247142] [<fba35a8e>] ? serial_close+0x7f/0x87 [usbserial]
[48904.247142] [<c05ff15f>] ? tty_release_dev+0x17c/0x400
[48904.247142] [<c045497c>] ? trace_hardirqs_on+0xb/0xd
[48904.247142] [<c0454a79>] ? debug_check_no_locks_freed+0xfb/0x113
[48904.247142] [<c05ff3f5>] ? tty_release+0x12/0x1c
[48904.247142] [<c04c0255>] ? __fput+0xee/0x1a0
[48904.247142] [<c04c0320>] ? fput+0x19/0x1b
[48904.247142] [<c04bd7c3>] ? filp_close+0x51/0x5b
[48904.247142] [<c043541f>] ? put_files_struct+0x68/0xaa
[48904.247142] [<c0435498>] ? exit_files+0x37/0x3c
[48904.247142] [<c0436aa9>] ? do_exit+0x1a8/0x5b3
[48904.247142] [<c045497c>] ? trace_hardirqs_on+0xb/0xd
[48904.247142] [<c0739db7>] ? _spin_unlock_irq+0x22/0x2b
[48904.247142] [<c0436f12>] ? do_group_exit+0x5e/0x85
[48904.247142] [<c04401d7>] ? get_signal_to_deliver+0x34b/0x364
[48904.247142] [<c0739dfc>] ? _spin_unlock_irqrestore+0x3c/0x48
[48904.247142] [<c04025a9>] ? do_notify_resume+0x77/0x6e2
[48904.247142] [<c043f361>] ? kill_pid_info+0x67/0x71
[48904.247142] [<c043541f>] ? put_files_struct+0x68/0xaa
[48904.247142] [<c0435498>] ? exit_files+0x37/0x3c
[48904.247142] [<c0436aa9>] ? do_exit+0x1a8/0x5b3
[48904.247142] [<c045497c>] ? trace_hardirqs_on+0xb/0xd
[48904.247142] [<c0739db7>] ? _spin_unlock_irq+0x22/0x2b
[48904.247142] [<c0436f12>] ? do_group_exit+0x5e/0x85
[48904.247142] [<c04401d7>] ? get_signal_to_deliver+0x34b/0x364
[48904.247142] [<c0739dfc>] ? _spin_unlock_irqrestore+0x3c/0x48
[48904.247142] [<c04025a9>] ? do_notify_resume+0x77/0x6e2
[48904.247142] [<c043f361>] ? kill_pid_info+0x67/0x71
[48904.247142] [<c073bcd3>] ? do_page_fault+0x185/0x31d
[48904.247142] [<c0403093>] ? resume_userspace+0x17/0x2c
[48904.247142] [<c05a91e4>] ? trace_hardirqs_off_thunk+0xc/0x10
[48904.247142] [<c0403093>] ? resume_userspace+0x17/0x2c
[48904.247142] [<c0403320>] ? work_notifysig+0x13/0x1b
[48904.247142] Code: e8 0e ef b6 c4 b8 dc b6 a3 fb e8 ab 2b d0 c4 5b 5d c3 55 89
c2 89 e5 57 56 53 80 b8 b6 01 00 00 00 75 42 8b 18 8b 43 04 8d 73 38 <8b> 78 1c
8d 82 bc 01 00 00 e8 c7 62 be c4 31 d2 89 f0 e8 90 2f
[48904.247142] EIP: [<fba359d0>] serial_do_free+0x19/0x58 [usbserial] SS:ESP 006
8:efce9d18
[48904.247142] CR2: 000000000000001c
[48904.247371] ---[ end trace 9974a487080c441d ]---
[48904.247373] Fixing recursive fault but reboot is needed!
Let me know if I can help with further information or testing stuff
Regards
Richard
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