I am trying to run RTNet using an Intel 82574L with the rt_e1000e driver. When, I start RTNet, I get the following messages posted to syslog (and my console) several times a second:
... [11965.171075] rt_e1000e: Reset adapter [11965.302808] rt_e1000e: Reset adapter [11965.434541] rt_e1000e: Reset adapter [11965.566274] rt_e1000e: Reset adapter ... Stopping RTNet usually worked (and stopped the messages). However, I also got the following oops: [12786.769498] rt_e1000e: Reset adapter [12786.896987] BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 [12786.920486] IP: [<ffffffffa04beba3>] e1000_alloc_rx_buffers+0x42/0x164 [rt_e1000e] [12786.943167] PGD 223419067 PUD 22550f067 PMD 0 [12786.956581] Oops: 0000 [#1] PREEMPT SMP [12786.968389] CPU 0 [12786.973891] Modules linked in: rtcfg(O-) rt_loopback(O) rtpacket(O) rttcp(O) rtudp(O) rt_e1000e(O) rtipv4(O) rtnet(O) cts binfmt_misc deflate zlib_deflate ctr twofish_generic twofish_x86_64_3way twofish_x86_6] [12787.245318] [12787.249784] Pid: 5583, comm: kworker/0:1 Tainted: G W O 3.2.21-gt-xenomai+ #16 Supermicro X9SCI/X9SCA/X9SCI/X9SCA [12787.282634] RIP: 0010:[<ffffffffa04beba3>] [<ffffffffa04beba3>] e1000_alloc_rx_buffers+0x42/0x164 [rt_e1000e] [12787.312580] RSP: 0018:ffff880226263d60 EFLAGS: 00010206 [12787.328461] RAX: 00000000000005f2 RBX: ffff880225cf81e0 RCX: ffffffffa04beb61 [12787.349791] RDX: 00000000000000d0 RSI: 000000000000003f RDI: ffff880225cf81e0 [12787.371122] RBP: 0000000000000000 R08: ffff880226260000 R09: 0000000000000000 [12787.392451] R10: ffff88022fc0d380 R11: ffff88022fc23d80 R12: 000000000000003f [12787.413781] R13: ffff8802245463c0 R14: ffff880225cf8690 R15: 0000000000000000 [12787.435111] FS: 0000000000000000(0000) GS:ffff88022fc00000(0000) knlGS:0000000000000000 [12787.459269] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [12787.476422] CR2: 0000000000000008 CR3: 0000000225bd0000 CR4: 00000000001006f0 [12787.497727] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [12787.519057] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [12787.540389] Process kworker/0:1 (pid: 5583, threadinfo ffff880226260000, task ffff880225798040) [12787.566388] Stack: [12787.572382] ffff880225cf81e0 000005f200989680 0000000000000001 ffff880225cf81e0 [12787.594620] ffff880225cf8528 ffff880225512dc0 ffff88022fc27700 ffff880225cf81e0 [12787.616809] 0000000000000000 ffffffffa04c117f ffff880225cf81e0 ffffffffa04c18f6 [12787.639072] Call Trace: [12787.646368] [<ffffffffa04c117f>] ? e1000e_up+0x9/0x5e [rt_e1000e] [12787.664843] [<ffffffffa04c18f6>] ? e1000e_reinit_locked+0x3e/0x47 [rt_e1000e] [12787.686433] [<ffffffffa04c1fac>] ? e1000_reset_task+0x6ad/0x6d1 [rt_e1000e] [12787.707501] [<ffffffff81304ef6>] ? sub_preempt_count+0x72/0x98 [12787.725199] [<ffffffff8104cb77>] ? queue_work+0x31/0x50 [12787.741079] [<ffffffff8102eaa3>] ? get_parent_ip+0x9/0x1b [12787.757479] [<ffffffffa04c18ff>] ? e1000e_reinit_locked+0x47/0x47 [rt_e1000e] [12787.779070] [<ffffffff8104c440>] ? process_one_work+0x149/0x2a9 [12787.797026] [<ffffffff8104d231>] ? worker_thread+0xc4/0x164 [12787.813945] [<ffffffff8104d16d>] ? manage_workers.isra.22+0x160/0x160 [12787.833459] [<ffffffff8105050c>] ? kthread+0x76/0x7e [12787.848563] [<ffffffff8130a3a4>] ? kernel_thread_helper+0x4/0x10 [12787.866777] [<ffffffff81050496>] ? flush_kthread_worker+0x8b/0x8b [12787.885253] [<ffffffff8130a3a0>] ? gs_change+0xb/0xb [12787.900354] Code: 48 83 ec 18 4c 8b af 50 04 00 00 8b 87 3c 03 00 00 45 0f b7 7d 18 89 44 24 0c 41 0f b7 ef 4d 6b ff 28 4d 03 7d 20 e9 05 01 00 00 <49> 8b 47 08 48 85 c0 74 17 83 78 78 00 74 3c 48 8b 50 60 c7 [12787.959026] RIP [<ffffffffa04beba3>] e1000_alloc_rx_buffers+0x42/0x164 [rt_e1000e] [12787.981965] RSP <ffff880226263d60> [12787.992372] CR2: 0000000000000008 [12788.002723] ---[ end trace 0755e2b8c754bace ]--- [12788.016519] BUG: unable to handle kernel paging request at fffffffffffffff8 [12788.037394] IP: [<ffffffff81050696>] kthread_data+0x7/0xc [12788.053585] PGD 1609067 PUD 160a067 PMD 0 [12788.065988] Oops: 0000 [#2] PREEMPT SMP [12788.077796] CPU 0 [12788.083298] Modules linked in: rtcfg(O-) rt_loopback(O) rtpacket(O) rttcp(O) rtudp(O) rt_e1000e(O) rtipv4(O) rtnet(O) cts binfmt_misc deflate zlib_deflate ctr twofish_generic twofish_x86_64_3way twofish_x86_6] [12788.355037] [12788.359500] Pid: 5583, comm: kworker/0:1 Tainted: G D W O 3.2.21-gt-xenomai+ #16 Supermicro X9SCI/X9SCA/X9SCI/X9SCA [12788.392378] RIP: 0010:[<ffffffff81050696>] [<ffffffff81050696>] kthread_data+0x7/0xc [12788.415837] RSP: 0000:ffff8802262639d0 EFLAGS: 00010002 [12788.431718] RAX: 0000000000000000 RBX: ffff88022fc23d80 RCX: 0000000000000000 [12788.453048] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880225798040 [12788.474377] RBP: 0000000000000000 R08: ffff88022ffac1e0 R09: 0000000000000400 [12788.495708] R10: ffff880225798040 R11: dead000000200200 R12: 0000000000000000 [12788.517040] R13: 0000000000000001 R14: ffff880225798338 R15: ffff880225798240 [12788.538367] FS: 0000000000000000(0000) GS:ffff88022fc00000(0000) knlGS:0000000000000000 [12788.562553] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [12788.579732] CR2: fffffffffffffff8 CR3: 0000000225bd0000 CR4: 00000000001006f0 [12788.601061] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [12788.622367] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [12788.643696] Process kworker/0:1 (pid: 5583, threadinfo ffff880226260000, task ffff880225798040) [12788.669696] Stack: [12788.675692] ffffffff8104d58e ffff88022fc23d80 ffff880225798554 0000000000000000 [12788.697982] ffffffff81300c90 ffff880225798040 ffff880225798040 0000000000023d80 [12788.720248] ffff880226263fd8 ffff880226263fd8 ffff880226263fd8 ffff880226263a28 [12788.742511] Call Trace: [12788.749830] [<ffffffff8104d58e>] ? wq_worker_sleeping+0xb/0x6a [12788.767528] [<ffffffff81300c90>] ? __schedule+0x17b/0x5a8 [12788.783928] [<ffffffff8103b11a>] ? do_exit+0x723/0x73f [12788.799548] [<ffffffff8130356c>] ? oops_end+0xab/0xb0 [12788.814910] [<ffffffff812fbf8a>] ? no_context+0x1eb/0x216 [12788.831310] [<ffffffff81304cb8>] ? do_page_fault+0x189/0x355 [12788.848489] [<ffffffff8102ff5d>] ? load_balance+0x8e/0x5ef [12788.865147] [<ffffffff81030660>] ? update_curr+0xb0/0xea [12788.881288] [<ffffffff81030660>] ? update_curr+0xb0/0xea [12788.897428] [<ffffffff81001654>] ? __switch_to+0x129/0x244 [12788.914090] [<ffffffff81028044>] ? mmdrop+0xd/0x1c [12788.928672] [<ffffffff81087ffd>] ? __ipipe_get_current_domain+0x5/0xd [12788.948185] [<ffffffff8102eaa3>] ? get_parent_ip+0x9/0x1b [12788.964586] [<ffffffff81016cfb>] ? __ipipe_handle_exception+0x14e/0x16c [12788.984618] [<ffffffff81304ef6>] ? sub_preempt_count+0x72/0x98 [12789.002316] [<ffffffff8130261a>] ? _raw_spin_unlock_irqrestore+0x2a/0x38 [12789.022608] [<ffffffff81302cf6>] ? page_fault+0x26/0x70 [12789.038492] [<ffffffffa04beb61>] ? dma_alloc_coherent.constprop.51+0x8e/0x8e [rt_e1000e] [12789.062935] [<ffffffffa04beba3>] ? e1000_alloc_rx_buffers+0x42/0x164 [rt_e1000e] [12789.085301] [<ffffffffa04c117f>] ? e1000e_up+0x9/0x5e [rt_e1000e] [12789.103778] [<ffffffffa04c18f6>] ? e1000e_reinit_locked+0x3e/0x47 [rt_e1000e] [12789.125367] [<ffffffffa04c1fac>] ? e1000_reset_task+0x6ad/0x6d1 [rt_e1000e] [12789.146437] [<ffffffff81304ef6>] ? sub_preempt_count+0x72/0x98 [12789.164135] [<ffffffff8104cb77>] ? queue_work+0x31/0x50 [12789.180014] [<ffffffff8102eaa3>] ? get_parent_ip+0x9/0x1b [12789.196416] [<ffffffffa04c18ff>] ? e1000e_reinit_locked+0x47/0x47 [rt_e1000e] [12789.218007] [<ffffffff8104c440>] ? process_one_work+0x149/0x2a9 [12789.235962] [<ffffffff8104d231>] ? worker_thread+0xc4/0x164 [12789.252881] [<ffffffff8104d16d>] ? manage_workers.isra.22+0x160/0x160 [12789.272396] [<ffffffff8105050c>] ? kthread+0x76/0x7e [12789.287498] [<ffffffff8130a3a4>] ? kernel_thread_helper+0x4/0x10 [12789.305714] [<ffffffff81050496>] ? flush_kthread_worker+0x8b/0x8b [12789.324190] [<ffffffff8130a3a0>] ? gs_change+0xb/0xb [12789.339291] Code: 65 48 8b 04 25 48 b6 00 00 ff 80 44 c0 ff ff 48 8b 1d 5f 36 62 00 48 85 db 75 a8 eb b8 41 5a 5b 89 e8 5d c3 48 8b 87 a0 02 00 00 <48> 8b 40 f8 c3 48 3b 3d 06 8a 72 00 75 08 0f bf 87 72 06 00 [12789.398041] RIP [<ffffffff81050696>] kthread_data+0x7/0xc [12789.414492] RSP <ffff8802262639d0> [12789.424925] CR2: fffffffffffffff8 [12789.434835] ---[ end trace 0755e2b8c754bacf ]--- [12789.448642] Fixing recursive fault but reboot is needed! This is with RTNet 0.9.13, Xenomai 2.6.2.1, Linux 3.2.21. Any suggestions to track down this issue? Cheers, -ntd ------------------------------------------------------------------------------ October Webinars: Code for Performance Free Intel webinars can help you accelerate application performance. Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from the latest Intel processors and coprocessors. See abstracts and register > http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk _______________________________________________ RTnet-users mailing list RTnet-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/rtnet-users
