Hi, another incident with the same usb-serial umts modem: $ uname -a Linux rz 2.6.31.3v0 #8 SMP Fri Oct 9 23:04:13 CEST 2009 i686 i686 i386 GNU/Linux Oct 14 01:54:42 localhost kernel: [34560.336078] INFO: task pppd:21603 blocked for more than 120 seconds. Oct 14 01:54:42 localhost kernel: [34560.336081] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Oct 14 01:54:42 localhost kernel: [34560.336084] pppd D 00001f4b 0 21603 1 0x00000084 Oct 14 01:54:42 localhost kernel: [34560.336089] f5535eac 00200046 72e0a794 00001f4b f5535e30 e58bfa80 00200002 c0b1c270 Oct 14 01:54:42 localhost kernel: [34560.336097] c099baa0 c099baa0 c099baa0 c09d2969 f5535e94 e5872420 e58726bc c2d01aa0 Oct 14 01:54:42 localhost kernel: [34560.336105] 00000000 72e1c002 00001f4b 00000000 f5535e7c 00200046 00000000 00000002 Oct 14 01:54:42 localhost kernel: [34560.336112] Call Trace: Oct 14 01:54:42 localhost kernel: [34560.336121] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd Oct 14 01:54:42 localhost kernel: [34560.336127] [<c0739f6c>] ? _spin_unlock_irqrestore+0x3c/0x48 Oct 14 01:54:42 localhost kernel: [34560.336130] [<c0454990>] ? trace_hardirqs_on_caller+0x113/0x134 Oct 14 01:54:42 localhost kernel: [34560.336134] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd Oct 14 01:54:42 localhost kernel: [34560.336139] [<c060394a>] tty_ldisc_ref_wait+0x60/0x78 Oct 14 01:54:42 localhost kernel: [34560.336143] [<c044691f>] ? autoremove_wake_function+0x0/0x33 Oct 14 01:54:42 localhost kernel: [34560.336154] [<f81c34f0>] ? serial_ioctl+0x0/0x7d [usbserial] Oct 14 01:54:42 localhost kernel: [34560.336158] [<c05fef5e>] tty_ioctl+0x707/0x75b Oct 14 01:54:42 localhost kernel: [34560.336162] [<c04b9dc5>] ? kmem_cache_free+0xaa/0xdf Oct 14 01:54:42 localhost kernel: [34560.336166] [<c0454990>] ? trace_hardirqs_on_caller+0x113/0x134 Oct 14 01:54:42 localhost kernel: [34560.336169] [<c05fe857>] ? tty_ioctl+0x0/0x75b Oct 14 01:54:42 localhost kernel: [34560.336173] [<c04ca5f7>] vfs_ioctl+0x22/0x69 Oct 14 01:54:42 localhost kernel: [34560.336176] [<c04cab91>] do_vfs_ioctl+0x4a5/0x4df Oct 14 01:54:42 localhost kernel: [34560.336180] [<c04eb002>] ? locks_free_lock+0x3d/0x40 Oct 14 01:54:42 localhost kernel: [34560.336183] [<c04ec167>] ? fcntl_setlk+0x165/0x16f Oct 14 01:54:42 localhost kernel: [34560.336188] [<c0472a8d>] ? audit_syscall_entry+0x18c/0x1ae Oct 14 01:54:42 localhost kernel: [34560.336193] [<c05a9284>] ? trace_hardirqs_on_thunk+0xc/0x10 Oct 14 01:54:42 localhost kernel: [34560.336196] [<c04cac0b>] sys_ioctl+0x40/0x5a Oct 14 01:54:42 localhost kernel: [34560.336201] [<c040321d>] syscall_call+0x7/0xb Oct 14 01:54:42 localhost kernel: [34560.336203] no locks held by pppd/21603. Oct 14 01:56:42 localhost kernel: [34680.336076] INFO: task pppd:21603 blocked for more than 120 seconds. Oct 14 01:56:42 localhost kernel: [34680.336080] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Oct 14 01:56:42 localhost kernel: [34680.336082] pppd D 00001f4b 0 21603 1 0x00000084 Oct 14 01:56:42 localhost kernel: [34680.336088] f5535eac 00200046 72e0a794 00001f4b f5535e30 e58bfa80 00200002 c0b1c270 Oct 14 01:56:42 localhost kernel: [34680.336096] c099baa0 c099baa0 c099baa0 c09d2969 f5535e94 e5872420 e58726bc c2d01aa0 Oct 14 01:56:42 localhost kernel: [34680.336103] 00000000 72e1c002 00001f4b 00000000 f5535e7c 00200046 00000000 00000002 Oct 14 01:56:42 localhost kernel: [34680.336111] Call Trace: Oct 14 01:56:42 localhost kernel: [34680.336120] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd Oct 14 01:56:42 localhost kernel: [34680.336125] [<c0739f6c>] ? _spin_unlock_irqrestore+0x3c/0x48 Oct 14 01:56:42 localhost kernel: [34680.336129] [<c0454990>] ? trace_hardirqs_on_caller+0x113/0x134 Oct 14 01:56:42 localhost kernel: [34680.336133] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd Oct 14 01:56:42 localhost kernel: [34680.336137] [<c060394a>] tty_ldisc_ref_wait+0x60/0x78 Oct 14 01:56:42 localhost kernel: [34680.336142] [<c044691f>] ? autoremove_wake_function+0x0/0x33 Oct 14 01:56:42 localhost kernel: [34680.336152] [<f81c34f0>] ? serial_ioctl+0x0/0x7d [usbserial] Oct 14 01:56:42 localhost kernel: [34680.336156] [<c05fef5e>] tty_ioctl+0x707/0x75b Oct 14 01:56:42 localhost kernel: [34680.336161] [<c04b9dc5>] ? kmem_cache_free+0xaa/0xdf Oct 14 01:56:42 localhost kernel: [34680.336164] [<c0454990>] ? trace_hardirqs_on_caller+0x113/0x134 Oct 14 01:56:42 localhost kernel: [34680.336167] [<c05fe857>] ? tty_ioctl+0x0/0x75b Oct 14 01:56:42 localhost kernel: [34680.336171] [<c04ca5f7>] vfs_ioctl+0x22/0x69 Oct 14 01:56:42 localhost kernel: [34680.336174] [<c04cab91>] do_vfs_ioctl+0x4a5/0x4df Oct 14 01:56:42 localhost kernel: [34680.336178] [<c04eb002>] ? locks_free_lock+0x3d/0x40 Oct 14 01:56:42 localhost kernel: [34680.336181] [<c04ec167>] ? fcntl_setlk+0x165/0x16f Oct 14 01:56:42 localhost kernel: [34680.336186] [<c0472a8d>] ? audit_syscall_entry+0x18c/0x1ae Oct 14 01:56:42 localhost kernel: [34680.336191] [<c05a9284>] ? trace_hardirqs_on_thunk+0xc/0x10 Oct 14 01:56:42 localhost kernel: [34680.336194] [<c04cac0b>] sys_ioctl+0x40/0x5a Oct 14 01:56:42 localhost kernel: [34680.336198] [<c040321d>] syscall_call+0x7/0xb Oct 14 01:56:42 localhost kernel: [34680.336201] no locks held by pppd/21603. Oct 14 01:58:42 localhost kernel: [34800.336080] INFO: task pppd:21603 blocked for more than 120 seconds. Oct 14 01:58:42 localhost kernel: [34800.336083] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Oct 14 01:58:42 localhost kernel: [34800.336086] pppd D 00001f4b 0 21603 1 0x00000084 Oct 14 01:58:42 localhost kernel: [34800.336091] f5535eac 00200046 72e0a794 00001f4b f5535e30 e58bfa80 00200002 c0b1c270 Oct 14 01:58:42 localhost kernel: [34800.336099] c099baa0 c099baa0 c099baa0 c09d2969 f5535e94 e5872420 e58726bc c2d01aa0 Oct 14 01:58:42 localhost kernel: [34800.336106] 00000000 72e1c002 00001f4b 00000000 f5535e7c 00200046 00000000 00000002 Oct 14 01:58:42 localhost kernel: [34800.336114] Call Trace: Oct 14 01:58:42 localhost kernel: [34800.336123] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd Oct 14 01:58:42 localhost kernel: [34800.336128] [<c0739f6c>] ? _spin_unlock_irqrestore+0x3c/0x48 Oct 14 01:58:42 localhost kernel: [34800.336132] [<c0454990>] ? trace_hardirqs_on_caller+0x113/0x134 Oct 14 01:58:42 localhost kernel: [34800.336136] [<c04549bc>] ? trace_hardirqs_on+0xb/0xd Oct 14 01:58:42 localhost kernel: [34800.336141] [<c060394a>] tty_ldisc_ref_wait+0x60/0x78 Oct 14 01:58:42 localhost kernel: [34800.336146] [<c044691f>] ? autoremove_wake_function+0x0/0x33 Oct 14 01:58:42 localhost kernel: [34800.336156] [<f81c34f0>] ? serial_ioctl+0x0/0x7d [usbserial] Oct 14 01:58:42 localhost kernel: [34800.336159] [<c05fef5e>] tty_ioctl+0x707/0x75b Oct 14 01:58:42 localhost kernel: [34800.336164] [<c04b9dc5>] ? kmem_cache_free+0xaa/0xdf Oct 14 01:58:42 localhost kernel: [34800.336168] [<c0454990>] ? trace_hardirqs_on_caller+0x113/0x134 Oct 14 01:58:42 localhost kernel: [34800.336171] [<c05fe857>] ? tty_ioctl+0x0/0x75b Oct 14 01:58:42 localhost kernel: [34800.336174] [<c04ca5f7>] vfs_ioctl+0x22/0x69 Oct 14 01:58:42 localhost kernel: [34800.336178] [<c04cab91>] do_vfs_ioctl+0x4a5/0x4df Oct 14 01:58:42 localhost kernel: [34800.336182] [<c04eb002>] ? locks_free_lock+0x3d/0x40 Oct 14 01:58:42 localhost kernel: [34800.336185] [<c04ec167>] ? fcntl_setlk+0x165/0x16f Oct 14 01:58:42 localhost kernel: [34800.336190] [<c0472a8d>] ? audit_syscall_entry+0x18c/0x1ae Oct 14 01:58:42 localhost kernel: [34800.336194] [<c05a9284>] ? trace_hardirqs_on_thunk+0xc/0x10 Oct 14 01:58:42 localhost kernel: [34800.336198] [<c04cac0b>] sys_ioctl+0x40/0x5a Oct 14 01:58:42 localhost kernel: [34800.336202] [<c040321d>] syscall_call+0x7/0xb Oct 14 01:58:42 localhost kernel: [34800.336204] no locks held by pppd/21603. Richard -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
