Hi! I'm trying to set up DUN networking against Nokia 6151 on a PC... fairly standard task, AFAICT. Unfortunately, it likes to kill the kernel rather too often. sleep .1 rfcomm unbind 0 rfcomm bind 0 $ADDRESS pppd file /etc/ppp/gprs | tee /root/log/pppd.tmp ... when ran first time, I get garbage: (like two listeners on same serial...? Aha, there's ModemManager interfering with my manual attempt) pavel@duo:~$ sudo ~pavel/bin/btppp u [sudo] password for pavel: Can't release device: No such device Press CTRL-C to close the connection at any stage! defining PDP context... ATE1 E0 Connect script failed pavel@duo:~$ Re-running the script sometimes works, but very often it causes kernel oops, on rather wide range of kernels. (From debian 3.17 to vanilla 4.1-rc3). Thinkpad X60. Unfortunately, it makes me unable to get on internet using GPRS... Best regards, Pavel [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 4.1.0-rc3+ (pavel@amd) (gcc version 4.9.2 (Debian 4.9.2-10) ) #80 SMP Mon May 25 09:58:35 CEST 2015 [ 0.000000] Disabled fast string operations [ 0.000000] e820: BIOS-provided physical RAM map: ... [ 85.835557] Bluetooth: TIOCGSERIAL is not supported [ 87.237677] Bluetooth: TIOCGSERIAL is not supported [ 93.727304] BUG: unable to handle kernel paging request at 5a5a5b5e [ 93.727396] IP: [<c4078e3f>] __lock_acquire.isra.24+0x16f/0xca0 [ 93.727467] *pdpt = 000000002bbc0001 *pde = 0000000000000000 [ 93.727534] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC [ 93.727587] Modules linked in: [ 93.727618] CPU: 1 PID: 3465 Comm: pppd Tainted: G W 4.1.0-rc3+ #80 [ 93.727695] Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 [ 93.727778] task: ec3d7560 ti: e3dd6000 task.ti: e3dd6000 [ 93.727833] EIP: 0060:[<c4078e3f>] EFLAGS: 00010006 CPU: 1 [ 93.727887] EIP is at __lock_acquire.isra.24+0x16f/0xca0 [ 93.727938] EAX: e5d49fb0 EBX: 00000000 ECX: 00000000 EDX: 00000000 [ 93.728002] ESI: 5a5a5a5a EDI: ec3d7560 EBP: e3dd7d48 ESP: e3dd7d24 [ 93.728067] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 93.728122] CR0: 80050033 CR2: 5a5a5b5e CR3: 34b5c760 CR4: 00000630 [ 93.728186] Stack: [ 93.728197] e3dd7d38 00000246 00000000 00000001 e5d49fb0 01dd7d40 00000000 00000246 [ 93.728310] e3fdec00 e3dd7d6c c40799b6 00000000 00000000 00000000 c49348cf 00000000 [ 93.728422] e5d49f7c 00000000 e3dd7db0 c49ceac8 00000000 00000001 00000000 c49348cf [ 93.728534] Call Trace: [ 93.728554] [<c40799b6>] lock_acquire+0x46/0x70 [ 93.728602] [<c49348cf>] ? rfcomm_tty_open+0x6f/0x190 [ 93.728654] [<c49ceac8>] mutex_lock_nested+0x28/0x2e0 [ 93.728703] [<c49348cf>] ? rfcomm_tty_open+0x6f/0x190 [ 93.728756] [<c4371dd7>] ? tty_port_open+0x87/0xb0 [ 93.728804] [<c49348cf>] rfcomm_tty_open+0x6f/0x190 [ 93.728851] [<c49d0e5d>] ? _raw_spin_unlock+0x1d/0x20 [ 93.728901] [<c436ad88>] tty_open+0xd8/0x530 [ 93.728942] [<c436ad88>] ? tty_open+0xd8/0x530 [ 93.728987] [<c4102f62>] chrdev_open+0x82/0x190 [ 93.729033] [<c40fd707>] do_dentry_open.isra.15+0x137/0x2d0 [ 93.729088] [<c4102ee0>] ? cdev_put+0x20/0x20 [ 93.729129] [<c40fd90c>] vfs_open+0x3c/0x50 [ 93.729170] [<c410a02f>] do_last.isra.46+0x2df/0xc90 [ 93.729220] [<c410c44a>] ? path_openat+0x4a/0x570 [ 93.729265] [<c410c464>] path_openat+0x64/0x570 [ 93.729309] [<c410d3f7>] do_filp_open+0x27/0x80 [ 93.729353] [<c4118ec0>] ? __alloc_fd+0x80/0x100 [ 93.729399] [<c40fe86f>] do_sys_open+0x10f/0x200 [ 93.729445] [<c41008f8>] ? ____fput+0x8/0x10 [ 93.729487] [<c40fe978>] SyS_open+0x18/0x20 [ 93.729527] [<c49d161e>] syscall_call+0x7/0x7 [ 93.730252] Code: 08 00 00 85 f6 75 24 90 8d 74 26 00 31 f6 8d 65 f4 89 f0 5b 5e 5f 5d c3 8d 74 26 00 8b 45 ec 8b 74 98 04 85 f6 0f 84 d3 fe ff ff <f0> ff 86 04 01 00 00 a1 d0 6d 47 c5 8b 9f 50 05 00 00 85 c0 0f [ 93.730252] EIP: [<c4078e3f>] __lock_acquire.isra.24+0x16f/0xca0 SS:ESP 0068:e3dd7d24 [ 93.730252] CR2: 000000005a5a5b5e [ 93.730252] ---[ end trace 72af900b148ab0d1 ]--- [ 93.752067] ------------[ cut here ]------------ [ 93.752067] WARNING: CPU: 1 PID: 3465 at kernel/softirq.c:150 __local_bh_enable_ip+0x58/0x90() [ 93.752067] Modules linked in: [ 93.752067] CPU: 1 PID: 3465 Comm: pppd Tainted: G D W 4.1.0-rc3+ #80 [ 93.752067] Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 [ 93.752067] 00000001 00000000 e3dd7b04 c49c6b8f 00000000 e3dd7b20 c403dacb 00000096 [ 93.752067] c4040718 00000200 e3dd3f98 e3dd3e54 e3dd7b30 c403db6f 00000009 00000000 [ 93.752067] e3dd7b3c c4040718 e3dd3e54 e3dd7b48 c49d11ea e3dd3c80 e3dd7b70 c48dc5fd [ 93.752067] Call Trace: [ 93.752067] [<c49c6b8f>] dump_stack+0x41/0x52 [ 93.752067] [<c403dacb>] warn_slowpath_common+0x6b/0xa0 [ 93.752067] [<c4040718>] ? __local_bh_enable_ip+0x58/0x90 [ 93.752067] [<c403db6f>] warn_slowpath_null+0xf/0x20 [ 93.752067] [<c4040718>] __local_bh_enable_ip+0x58/0x90 [ 93.752067] [<c49d11ea>] _raw_write_unlock_bh+0x2a/0x30 [ 93.752067] [<c48dc5fd>] unix_release_sock+0x6d/0x220 [ 93.752067] [<c48dc7c6>] unix_release+0x16/0x30 [ 93.752067] [<c4820544>] sock_release+0x14/0x70 [ 93.752067] [<c48205ab>] sock_close+0xb/0x10 [ 93.752067] [<c4100782>] __fput+0x82/0x1c0 [ 93.752067] [<c41008f8>] ____fput+0x8/0x10 [ 93.752067] [<c4054799>] task_work_run+0xc9/0xe0 [ 93.752067] [<c4050707>] ? pool_mayday_timeout+0x37/0x120 [ 93.752067] [<c403ed75>] do_exit+0x275/0x930 [ 93.752067] [<c408964a>] ? kmsg_dump+0xea/0x100 [ 93.752067] [<c40050d0>] oops_end+0x80/0xb0 [ 93.752067] [<c40341c5>] no_context+0xf5/0x260 [ 93.752067] [<c4062ee8>] ? update_cfs_rq_blocked_load+0xf8/0x190 [ 93.752067] [<c40343ba>] __bad_area_nosemaphore+0x8a/0x130 [ 93.752067] [<c4034615>] bad_area+0x35/0x40 [ 93.752067] [<c40348bd>] __do_page_fault+0x29d/0x3b0 [ 93.752067] [<c40349e0>] ? vmalloc_sync_all+0x10/0x10 [ 93.752067] [<c40349eb>] do_page_fault+0xb/0x10 [ 93.752067] [<c49d2197>] error_code+0x67/0x6c [ 93.752067] [<c4078e3f>] ? __lock_acquire.isra.24+0x16f/0xca0 [ 93.752067] [<c40799b6>] lock_acquire+0x46/0x70 [ 93.752067] [<c49348cf>] ? rfcomm_tty_open+0x6f/0x190 [ 93.752067] [<c49ceac8>] mutex_lock_nested+0x28/0x2e0 [ 93.752067] [<c49348cf>] ? rfcomm_tty_open+0x6f/0x190 [ 93.752067] [<c4371dd7>] ? tty_port_open+0x87/0xb0 [ 93.752067] [<c49348cf>] rfcomm_tty_open+0x6f/0x190 [ 93.752067] [<c49d0e5d>] ? _raw_spin_unlock+0x1d/0x20 [ 93.752067] [<c436ad88>] tty_open+0xd8/0x530 [ 93.752067] [<c436ad88>] ? tty_open+0xd8/0x530 [ 93.752067] [<c4102f62>] chrdev_open+0x82/0x190 [ 93.752067] [<c40fd707>] do_dentry_open.isra.15+0x137/0x2d0 [ 93.752067] [<c4102ee0>] ? cdev_put+0x20/0x20 [ 93.752067] [<c40fd90c>] vfs_open+0x3c/0x50 [ 93.752067] [<c410a02f>] do_last.isra.46+0x2df/0xc90 [ 93.752067] [<c410c44a>] ? path_openat+0x4a/0x570 [ 93.752067] [<c410c464>] path_openat+0x64/0x570 [ 93.752067] [<c410d3f7>] do_filp_open+0x27/0x80 [ 93.752067] [<c4118ec0>] ? __alloc_fd+0x80/0x100 [ 93.752067] [<c40fe86f>] do_sys_open+0x10f/0x200 [ 93.752067] [<c41008f8>] ? ____fput+0x8/0x10 [ 93.752067] [<c40fe978>] SyS_open+0x18/0x20 [ 93.752067] [<c49d161e>] syscall_call+0x7/0x7 [ 93.752067] ---[ end trace 72af900b148ab0d2 ]--- Happens on 3.17, too: [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Linux version 3.17.0+ (pavel@duo) (gcc version 4.9.1 (Debian 4.9.1-16) ) #2 SMP Mon Oct 13 23:14:42 CEST 2014 [ 0.000000] Disabled fast string operations ... [ 72.927912] Bluetooth: TIOCGSERIAL is not supported [ 76.766721] Bluetooth: TIOCGSERIAL is not supported [ 80.607053] BUG: unable to handle kernel paging request at f0d71fc4 [ 80.607143] IP: [<c4765254>] rfcomm_dlc_open+0x44/0x340 [ 80.607205] *pde = 052ed067 *pte = 30d71060 [ 80.607251] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC [ 80.607304] Modules linked in: [ 80.607334] CPU: 0 PID: 3281 Comm: pppd Not tainted 3.17.0+ #2 [ 80.607392] Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 [ 80.607476] task: e4d8d580 ti: ef79a000 task.ti: ef79a000 [ 80.607532] EIP: 0060:[<c4765254>] EFLAGS: 00010293 CPU: 0 [ 80.607587] EIP is at rfcomm_dlc_open+0x44/0x340 [ 80.607630] EAX: 00000000 EBX: ef79bd94 ECX: 00000001 EDX: 0000009a [ 80.607695] ESI: 00000001 EDI: f0d71f00 EBP: ef79bd80 ESP: ef79bd50 [ 80.607758] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 80.607811] CR0: 80050033 CR2: f0d71fc4 CR3: 2c447000 CR4: 00000710 [ 80.607874] Stack: [ 80.607885] e6873e1a e6873e14 e6873d4c f5799c00 ef79bda0 c47ef8b8 00000000 00000001 [ 80.607996] 00000000 00000001 f5799c00 ef79bd94 ef79bda0 c476a368 ef79bda0 e6873d4c [ 80.608107] c476a368 00000001 e6873c00 f5799c00 ef79bdb8 c43175e8 e4d6dec0 f5799c00 [ 80.608218] Call Trace: [ 80.608242] [<c47ef8b8>] ? mutex_lock_nested+0x28/0x2c0 [ 80.608296] [<c476a368>] rfcomm_dev_activate+0x28/0x40 [ 80.608349] [<c476a368>] ? rfcomm_dev_activate+0x28/0x40 [ 80.608405] [<c43175e8>] tty_port_open+0x68/0xb0 [ 80.608452] [<c476a0b1>] rfcomm_tty_open+0x41/0x190 [ 80.608501] [<c47f27bd>] ? _raw_spin_unlock+0x1d/0x20 [ 80.608553] [<c430fab9>] tty_open+0x149/0x5b0 [ 80.608596] [<c430fab9>] ? tty_open+0x149/0x5b0 [ 80.608642] [<c40f29b2>] chrdev_open+0x82/0x190 [ 80.608687] [<c40ecfa4>] do_dentry_open.isra.16+0x184/0x2c0 [ 80.608744] [<c40f2930>] ? cdev_put+0x20/0x20 [ 80.608786] [<c40ed186>] finish_open+0x16/0x30 [ 80.608831] [<c40faccf>] do_last.isra.53+0x5ef/0xc60 [ 80.608883] [<c40fb3d8>] path_openat+0x98/0x580 [ 80.608928] [<c40fc837>] do_filp_open+0x27/0x80 [ 80.608973] [<c41082e0>] ? __alloc_fd+0x80/0x100 [ 80.609020] [<c40ee1ff>] do_sys_open+0x10f/0x200 [ 80.609067] [<c40ee308>] SyS_open+0x18/0x20 [ 80.609108] [<c47f30de>] syscall_call+0x7/0x7 [ 80.609147] Code: c4 83 ec 24 89 55 d4 31 d2 89 4d d0 8b 33 e8 54 a6 08 00 f6 05 5a 7e b9 c4 04 0f 85 1f 01 00 00 8d 46 ff 3c 1d 0f 87 3e 01 00 00 <8b> 87 c4 00 00 00 83 f8 09 74 29 83 f8 02 c7 45 d8 00 00 00 00 [ 80.609617] EIP: [<c4765254>] rfcomm_dlc_open+0x44/0x340 SS:ESP 0068:ef79bd50 [ 80.609979] CR2: 00000000f0d71fc4 [ 80.609979] ---[ end trace 82e6395426152cad ]--- [ 80.609979] ------------[ cut here ]------------ [ 80.609979] WARNING: CPU: 0 PID: 3281 at kernel/softirq.c:146 __local_bh_enable_ip+0x58/0x90() [ 80.609979] Modules linked in: [ 80.609979] CPU: 0 PID: 3281 Comm: pppd Tainted: G D 3.17.0+ #2 [ 80.609979] Hardware name: LENOVO 17097HU/17097HU, BIOS 7BETD8WW (2.19 ) 03/31/2011 [ 80.609979] 00000000 00000000 ef79bb08 c47eb2ad 00000000 ef79bb24 c4037652 00000092 [ 80.609979] c403a108 00000200 e4d03f84 e4d03e44 ef79bb34 c40376df 00000009 00000000 [ 80.609979] ef79bb40 c403a108 e4d03e44 ef79bb4c c47f2b4a e4d03c80 ef79bb74 c471b72d [ 80.609979] Call Trace: [ 80.609979] [<c47eb2ad>] dump_stack+0x41/0x52 [ 80.609979] [<c4037652>] warn_slowpath_common+0x62/0x80 [ 80.609979] [<c403a108>] ? __local_bh_enable_ip+0x58/0x90 [ 80.609979] [<c40376df>] warn_slowpath_null+0xf/0x20 [ 80.609979] [<c403a108>] __local_bh_enable_ip+0x58/0x90 [ 80.609979] [<c47f2b4a>] _raw_write_unlock_bh+0x2a/0x30 [ 80.609979] [<c471b72d>] unix_release_sock+0x6d/0x220 [ 80.609979] [<c4109d00>] ? mnt_get_count+0x50/0x50 [ 80.609979] [<c471b8f6>] unix_release+0x16/0x30 [ 80.609979] [<c466a2b4>] sock_release+0x14/0x70 [ 80.609979] [<c466a31b>] sock_close+0xb/0x10 [ 80.609979] [<c40f01b2>] __fput+0x82/0x1c0 [ 80.609979] [<c40f0328>] ____fput+0x8/0x10 [ 80.609979] [<c404d329>] task_work_run+0x99/0xb0 [ 80.609979] [<c40387ef>] do_exit+0x2ef/0x930 [ 80.609979] [<c407e6fa>] ? kmsg_dump+0xea/0x100 [ 80.609979] [<c4004fe0>] oops_end+0x80/0xb0 [ 80.609979] [<c402ec91>] no_context+0x101/0x220 [ 80.609979] [<c402ee3a>] __bad_area_nosemaphore+0x8a/0x130 [ 80.609979] [<c402f710>] ? vmalloc_sync_all+0x100/0x100 [ 80.609979] [<c402eeed>] bad_area_nosemaphore+0xd/0x10 [ 80.609979] [<c402f43c>] __do_page_fault+0x26c/0x440 [ 80.609979] [<c406e61a>] ? __lock_acquire.isra.24+0x2ea/0xc10 [ 80.609979] [<c402f710>] ? vmalloc_sync_all+0x100/0x100 [ 80.609979] [<c402f71b>] do_page_fault+0xb/0x10 [ 80.609979] [<c47f39d7>] error_code+0x67/0x6c [ 80.609979] [<c4765254>] ? rfcomm_dlc_open+0x44/0x340 [ 80.609979] [<c47ef8b8>] ? mutex_lock_nested+0x28/0x2c0 [ 80.609979] [<c476a368>] rfcomm_dev_activate+0x28/0x40 [ 80.609979] [<c476a368>] ? rfcomm_dev_activate+0x28/0x40 [ 80.609979] [<c43175e8>] tty_port_open+0x68/0xb0 [ 80.609979] [<c476a0b1>] rfcomm_tty_open+0x41/0x190 [ 80.609979] [<c47f27bd>] ? _raw_spin_unlock+0x1d/0x20 [ 80.609979] [<c430fab9>] tty_open+0x149/0x5b0 [ 80.609979] [<c430fab9>] ? tty_open+0x149/0x5b0 [ 80.609979] [<c40f29b2>] chrdev_open+0x82/0x190 [ 80.609979] [<c40ecfa4>] do_dentry_open.isra.16+0x184/0x2c0 [ 80.609979] [<c40f2930>] ? cdev_put+0x20/0x20 [ 80.609979] [<c40ed186>] finish_open+0x16/0x30 [ 80.609979] [<c40faccf>] do_last.isra.53+0x5ef/0xc60 [ 80.609979] [<c40fb3d8>] path_openat+0x98/0x580 [ 80.609979] [<c40fc837>] do_filp_open+0x27/0x80 [ 80.609979] [<c41082e0>] ? __alloc_fd+0x80/0x100 [ 80.609979] [<c40ee1ff>] do_sys_open+0x10f/0x200 [ 80.609979] [<c40ee308>] SyS_open+0x18/0x20 [ 80.609979] [<c47f30de>] syscall_call+0x7/0x7 [ 80.609979] ---[ end trace 82e6395426152cae ]--- -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
