Hi All, Crash Starts here. 1498.722292] ------------[ cut here ]------------ [ 1498.722305] WARNING: CPU: 3 PID: 5029 at /build/buildd/linux-3.13.0/drivers/tty/tty_io.c:1474 tty_init_dev+0x1d0/0x1e0() [ 1498.722308] tty_init_dev: driver does not set tty->port. This will crash the kernel later. Fix the driver! [ 1498.722310] Modules linked in: lvsd(OF) nls_utf8 isofs pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) bnep rfcomm snd_hda_codec_hdmi snd_hda_codec_realtek uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev btusb bluetooth joydev arc4 iwldvm mac80211 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse serio_raw iwlwifi snd_hda_intel snd_hda_codec thinkpad_acpi lpc_ich nvram snd_hwdep cfg80211 snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_page_alloc snd_seq mei_me mei snd_seq_device snd_timer snd soundcore i915 parport_pc drm_kms_helper drm ppdev video i2c_algo_bit wmi lp parport mac_hid hid_generic usbhid hid e1000e ahci sdhci_pci libahci ptp sdhci pps_core [ 1498.722401] CPU: 3 PID: 5029 Comm: prj Tainted: GF O 3.13.0-24-generic #46-Ubuntu [ 1498.722403] Hardware name: LENOVO 242962Q/242962Q, BIOS G4ET97WW (2.57 ) 10/17/2013 [ 1498.722406] 0000000000000009 ffff8800c82adb48 ffffffff81715a64 ffff8800c82adb90 [ 1498.722413] ffff8800c82adb80 ffffffff810676bd ffff8800ac727800 ffff8800a18556c0 [ 1498.722418] 0000000000000001 ffffffff81863320 0000000000000000 ffff8800c82adbe0 [ 1498.722423] Call Trace: [ 1498.722432] [<ffffffff81715a64>] dump_stack+0x45/0x56 [ 1498.722438] [<ffffffff810676bd>] warn_slowpath_common+0x7d/0xa0 [ 1498.722443] [<ffffffff8106772c>] warn_slowpath_fmt+0x4c/0x50 [ 1498.722450] [<ffffffff81362e63>] ? ___ratelimit+0x93/0x100 [ 1498.722455] [<ffffffff814428e0>] tty_init_dev+0x1d0/0x1e0 [ 1498.722460] [<ffffffff81443593>] tty_open+0x2f3/0x600 [ 1498.722467] [<ffffffff811bdebf>] chrdev_open+0x9f/0x1d0 [ 1498.722472] [<ffffffff811b6997>] do_dentry_open+0x1c7/0x2e0 [ 1498.722477] [<ffffffff811bde20>] ? cdev_put+0x30/0x30 [ 1498.722481] [<ffffffff811b6d39>] vfs_open+0x49/0x50 [ 1498.722486] [<ffffffff811c6c61>] do_last+0x561/0x1200 [ 1498.722494] [<ffffffff8130e23b>] ? apparmor_file_alloc_security+0x5b/0x180 [ 1498.722500] [<ffffffff811c8d7b>] path_openat+0xbb/0x620 [ 1498.722506] [<ffffffff8115683a>] ? __free_pages+0x5a/0x60 [ 1498.722511] [<ffffffff811ca13a>] do_filp_open+0x3a/0x90 [ 1498.722517] [<ffffffff811d6f27>] ? __alloc_fd+0xa7/0x130 [ 1498.722522] [<ffffffff811b8859>] do_sys_open+0x129/0x280 [ 1498.722529] [<ffffffff81020d35>] ? syscall_trace_enter+0x145/0x250 [ 1498.722534] [<ffffffff811b89ce>] SyS_open+0x1e/0x20 [ 1498.722539] [<ffffffff8172663f>] tracesys+0xe1/0xe6 [ 1498.722542] ---[ end trace 97728bd8c9f8c14b ]--- [ 1498.722552] BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 [ 1498.722624] IP: [<ffffffff814427b5>] tty_init_dev+0xa5/0x1e0 [ 1498.722672] PGD b678f067 PUD 8b650067 PMD 0 [ 1498.722715] Oops: 0002 [#1] SMP [ 1498.722749] Modules linked in: lvsd(OF) nls_utf8 isofs pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) bnep rfcomm snd_hda_codec_hdmi snd_hda_codec_realtek uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev btusb bluetooth joydev arc4 iwldvm mac80211 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd psmouse serio_raw iwlwifi snd_hda_intel snd_hda_codec thinkpad_acpi lpc_ich nvram snd_hwdep cfg80211 snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_page_alloc snd_seq mei_me mei snd_seq_device snd_timer snd soundcore i915 parport_pc drm_kms_helper drm ppdev video i2c_algo_bit wmi lp parport mac_hid hid_generic usbhid hid e1000e ahci sdhci_pci libahci ptp sdhci pps_core [ 1498.723552] CPU: 3 PID: 5029 Comm: prj Tainted: GF W O 3.13.0-24-generic #46-Ubuntu [ 1498.723612] Hardware name: LENOVO 242962Q/242962Q, BIOS G4ET97WW (2.57 ) 10/17/2013 [ 1498.723668] task: ffff880114b82fe0 ti: ffff8800c82ac000 task.ti: ffff8800c82ac000 [ 1498.723722] RIP: 0010:[<ffffffff814427b5>] [<ffffffff814427b5>] tty_init_dev+0xa5/0x1e0 [ 1498.723786] RSP: 0018:ffff8800c82adbf0 EFLAGS: 00010296 [ 1498.723825] RAX: 0000000000000000 RBX: ffff8800ac727800 RCX: 0000000000000006 [ 1498.723877] RDX: 0000000000000007 RSI: 0000000000000000 RDI: 0000000000000009 [ 1498.723929] RBP: ffff8800c82adc10 R08: 0000000000000096 R09: 00000000000003f7 [ 1498.723981] R10: 0000000000000000 R11: ffff8800c82ad876 R12: ffff8800a18556c0 [ 1498.724033] R13: 0000000000000001 R14: ffffffff81863320 R15: 0000000000000000 [ 1498.724086] FS: 00007fe64bee4740(0000) GS:ffff88011e2c0000(0000) knlGS:0000000000000000 [ 1498.724145] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1498.724187] CR2: 0000000000000090 CR3: 00000000989b9000 CR4: 00000000001407e0 [ 1498.724239] Stack: [ 1498.724256] ffff880098acff10 ffff880098acff00 0000000000000000 ffff8800a18556c0 [ 1498.724323] ffff8800c82adc68 ffffffff81443593 ffff8800960edd38 ffff880114b82fe0 [ 1498.724387] 2580000100008002 00000001c82adc7c ffff8800a1a1c068 ffff8800960edd38 [ 1498.724452] Call Trace: [ 1498.724476] [<ffffffff81443593>] tty_open+0x2f3/0x600 [ 1498.724518] [<ffffffff811bdebf>] chrdev_open+0x9f/0x1d0 [ 1498.724560] [<ffffffff811b6997>] do_dentry_open+0x1c7/0x2e0 [ 1498.724606] [<ffffffff811bde20>] ? cdev_put+0x30/0x30 [ 1498.724646] [<ffffffff811b6d39>] vfs_open+0x49/0x50 [ 1498.724686] [<ffffffff811c6c61>] do_last+0x561/0x1200 [ 1498.724728] [<ffffffff8130e23b>] ? apparmor_file_alloc_security+0x5b/0x180 [ 1498.724781] [<ffffffff811c8d7b>] path_openat+0xbb/0x620 [ 1498.724824] [<ffffffff8115683a>] ? __free_pages+0x5a/0x60 [ 1498.724868] [<ffffffff811ca13a>] do_filp_open+0x3a/0x90 [ 1498.724912] [<ffffffff811d6f27>] ? __alloc_fd+0xa7/0x130 [ 1498.724954] [<ffffffff811b8859>] do_sys_open+0x129/0x280 [ 1498.724998] [<ffffffff81020d35>] ? syscall_trace_enter+0x145/0x250 [ 1498.725047] [<ffffffff811b89ce>] SyS_open+0x1e/0x20 [ 1498.725087] [<ffffffff8172663f>] tracesys+0xe1/0xe6 [ 1498.725125] Code: 84 24 a0 00 00 00 48 89 de 4c 89 e7 48 8b 40 08 48 85 c0 74 79 ff d0 85 c0 78 7b 48 8b 83 b8 02 00 00 48 85 c0 0f 84 9b 00 00 00 <48> 89 98 90 00 00 00 48 8b b3 f8 01 00 00 48 89 df e8 65 83 00 [ 1498.725494] RIP [<ffffffff814427b5>] tty_init_dev+0xa5/0x1e0 [ 1498.725547] RSP <ffff8800c82adbf0> [ 1498.725574] CR2: 0000000000000090 [ 1498.739706] ---[ end trace 97728bd8c9f8c14c ]--- root@hacked:~/work/mydr# On Wed, May 28, 2014 at 2:25 PM, Abhijit Lamsoge <abhijitelinux@xxxxxxxxx> wrote: > Hi All, > I had written a char/serial driver for Kernel 3.0 to 3.1 in old times > and it used to work absolutely fine. > Now I need this driver for some bluetooth, virtual mount-point for > data transfer to and fro to mobile, > for kernel version 3.8 onwards, however, there is a big crash, when I > do any data transfer on the uart_port created by this driver. > I have attached the crash file dmesg here. > I am not sure, where the problem is, whether it's the kernel or the driver. > > Please let me know if anybody gets any idea from the crash. > > > Abhijit -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
