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Message-ID: <20070311152213.GH31985@mellanox.co.il> Date: Sun, 11 Mar 2007 17:22:13 +0200 From: "Michael S. Tsirkin" <mst@...lanox.co.il> To: Roland Dreier <roland.list@...il.com> Cc: Roland Dreier <rdreier@...co.com>, Ingo Molnar <mingo@...e.hu>, general@...ts.openfabrics.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: lockdep question (was Re: IPoIB caused a kernel: BUG: soft lockup detected on CPU#0!) > Quoting Michael S. Tsirkin <mst@...lanox.co.il>: > Subject: Re: lockdep question (was Re: IPoIB caused a kernel: BUG: soft lockup detected on CPU#0!) > > > After adding some printks, I started getting these: > > [ 597.036720] BUG: MAX_STACK_TRACE_ENTRIES too low! > [ 597.041546] turning off the locking correctness validator. I looked at our stack usage a bit. It seems some work is in order. $ make checkstack | grep ib_ 0x00000603 mthca_init_hca [ib_mthca]: 764 0x000014ed mthca_init_hca [ib_mthca]: 764 0x000065ae ipoib_cm_tx_start [ib_ipoib]: 368 0x00006b0b ipoib_cm_tx_start [ib_ipoib]: 368 0x0000135f ib_uverbs_query_device [ib_uverbs]: 348 0x000015f9 ib_uverbs_query_device [ib_uverbs]: 348 0x000005d0 ib_ucm_init_qp_attr [ib_ucm]: 300 0x00000697 ib_ucm_init_qp_attr [ib_ucm]: 300 0x00007f9e ipoib_path_seq_show [ib_ipoib]: 264 0x00008092 ipoib_path_seq_show [ib_ipoib]: 264 0x00005b56 ipoib_cm_rx_handler [ib_ipoib]: 220 0x00005eec ipoib_cm_rx_handler [ib_ipoib]: 220 0x00007934 ipoib_cm_tx_handler [ib_ipoib]: 208 0x00007ce0 ipoib_cm_tx_handler [ib_ipoib]: 208 0x000032fe ib_uverbs_create_qp [ib_uverbs]: 192 0x000036fd ib_uverbs_create_qp [ib_uverbs]: 192 0x000028a9 srp_reset_host [ib_srp]: 192 0x00002a96 srp_reset_host [ib_srp]: 192 0x00001c99 show_sys_image_guid [ib_core]: 188 0x00001d2b show_sys_image_guid [ib_core]: 188 0x000001f9 ib_sa_service_rec_callback [ib_sa]: 180 0x00000234 ib_sa_service_rec_callback [ib_sa]: 180 0x00001b3c path_rec_completion [ib_ipoib]: 180 0x00002020 path_rec_completion [ib_ipoib]: 180 0x000070cf ipoib_cm_handle_rx_wc [ib_ipoib]: 180 0x00007402 ipoib_cm_handle_rx_wc [ib_ipoib]: 180 0x000009a7 srp_create_target [ib_srp]: 176 0x0000125f srp_create_target [ib_srp]: 176 0x00000d9d ib_cm_listen [ib_cm]: 172 0x000010b3 ib_cm_listen [ib_cm]: 172 0x00004455 ipoib_mcast_send [ib_ipoib]: 172 0x000048e0 ipoib_mcast_send [ib_ipoib]: 172 0x000015c1 ipoib_start_xmit [ib_ipoib]: 164 0x00001b2d ipoib_start_xmit [ib_ipoib]: 164 0x000056c8 mthca_make_profile [ib_mthca]: 160 0x00006051 mthca_make_profile [ib_mthca]: 160 0x00002abb ipoib_ib_dev_stop [ib_ipoib]: 160 0x00002d19 ipoib_ib_dev_stop [ib_ipoib]: 160 0x0000202b ib_uverbs_query_qp [ib_uverbs]: 156 0x000022c0 ib_uverbs_query_qp [ib_uverbs]: 156 0x00005269 ipoib_init_qp [ib_ipoib]: 152 0x000053bc ipoib_init_qp [ib_ipoib]: 152 0x0000327f ipoib_mcast_join [ib_ipoib]: 144 0x0000349d ipoib_mcast_join [ib_ipoib]: 144 0x00002092 ib_find_send_mad [ib_mad]: 140 0x000023fa ib_find_send_mad [ib_mad]: 140 0x000022cf ib_uverbs_modify_qp [ib_uverbs]: 140 0x000024f2 ib_uverbs_modify_qp [ib_uverbs]: 140 0x0000bc8e mthca_modify_qp [ib_mthca]: 136 0x0000c9cc mthca_modify_qp [ib_mthca]: 136 0x00010cb1 mthca_reg_phys_mr [ib_mthca]: 136 0x0001117a mthca_reg_phys_mr [ib_mthca]: 136 0x000035b4 ipoib_mcast_join_finish [ib_ipoib]: 136 0x00003a33 ipoib_mcast_join_finish [ib_ipoib]: 136 0x00000793 iser_cma_handler [ib_iser]: 132 0x00000bc1 iser_cma_handler [ib_iser]: 132 0x00001e37 srp_queuecommand [ib_srp]: 132 0x0000273b srp_queuecommand [ib_srp]: 132 0x00008a5a mthca_poll_cq [ib_mthca]: 128 0x00009204 mthca_poll_cq [ib_mthca]: 128 0x00003a42 ipoib_mcast_join_complete [ib_ipoib]: 128 0x00003e6e ipoib_mcast_join_complete [ib_ipoib]: 128 0x00004a58 ipoib_mcast_restart_task [ib_ipoib]: 128 0x00004eb8 ipoib_mcast_restart_task [ib_ipoib]: 128 0x000038e6 ib_uverbs_create_ah [ib_uverbs]: 116 0x00003ac4 ib_uverbs_create_ah [ib_uverbs]: 116 0x0000f6a5 mthca_process_mad [ib_mthca]: 116 0x0000fa93 mthca_process_mad [ib_mthca]: 116 0x000011ef mcast_work_handler [ib_sa]: 112 0x000016e6 mcast_work_handler [ib_sa]: 112 0x00000a20 ib_ucm_send_req [ib_ucm]: 112 0x00000b7c ib_ucm_send_req [ib_ucm]: 112 0x00001697 ib_post_send_mad [ib_mad]: 112 0x00001b05 ib_post_send_mad [ib_mad]: 112 0x0000030e iser_post_send [ib_iser]: 112 0x000003c5 iser_post_send [ib_iser]: 112 0x00001605 ib_uverbs_query_port [ib_uverbs]: 108 0x00001713 ib_uverbs_query_port [ib_uverbs]: 108 0x0000171d ib_uverbs_create_srq [ib_uverbs]: 108 0x00001946 ib_uverbs_create_srq [ib_uverbs]: 108 0x00002409 ib_mad_completion_handler [ib_mad]: 104 0x00002907 ib_mad_completion_handler [ib_mad]: 104 0x00002454 iser_reg_rdma_mem [ib_iser]: 104 0x00002aa8 iser_reg_rdma_mem [ib_iser]: 104 0x0416 rdma_resolve_ip [ib_addr]: 100 0x066f rdma_resolve_ip [ib_addr]: 100 0x00007dcb ipoib_mcg_seq_show [ib_ipoib]: 100 0x00007e65 ipoib_mcg_seq_show [ib_ipoib]: 100 -- MST - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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