On 9/30/2010 5:35 PM, Ralph Campbell wrote: > I was looking at the Rx connection tear down and found a bug. > I don't know if it would cause this panic but you might try it. > I haven't stress tested it but it compiles and basic network > connections work. > > I also don't like the call to cancel_delayed_work(&priv->cm.stale_task) > at the end of ipoib_cm_dev_stop(). I think it should be called after > ib_destroy_cm_id() and priv->cm.id = NULL. > Ralph,
I have managed to recreate this crash a few times under stress. I expect to be able to try your patch some time next week, and will let you know. Thanks for taking time to look into this. Thanks Pradeep > On Thu, 2010-09-02 at 20:41 -0700, Pradeep Satyanarayana wrote: >> Ralph, >> >> I see the following crash sporadically (only under stress) with a Sles11SP1 >> (which is 2.6.32 kernel). >> I saw this crash with V4 of your patch and have not yet had a chance to try >> V5. Have you seen this >> in your testing? If this not the crash stack can you please share what your >> patch fixes? >> >> <4>ib0: RX drain timing out >> <4>idr_remove called for id=11491974 which is not allocated. >> <4>Call Trace: >> <4>[c000000749fe33b0] [c0000000000129e4] .show_stack+0x6c/0x198 (unreliable) >> <4>[c000000749fe3460] [c0000000002ea594] .sub_remove+0x1ec/0x1f8 >> <4>[c000000749fe3520] [c0000000002ea5e0] .idr_remove+0x40/0xf8 >> <4>[c000000749fe35b0] [d000000012d84d70] .cm_destroy_id+0xa0/0x520 [ib_cm] >> <4>[c000000749fe3680] [d00000001b7fb644] >> .ipoib_cm_free_rx_reap_list+0xd4/0x190 [ib_ipoib] >> <4>[c000000749fe3740] [d00000001b7fe404] .ipoib_cm_dev_stop+0x23c/0x360 >> [ib_ipoib] >> <4>[c000000749fe3800] [d00000001b7f4dbc] .ipoib_ib_dev_stop+0xe4/0x4b0 >> [ib_ipoib] >> <4>[c000000749fe3960] [d00000001b7f0f30] .ipoib_stop+0x88/0x178 [ib_ipoib] >> <4>[c000000749fe39f0] [c0000000004eacf4] .dev_close+0xdc/0x148 >> <4>[c000000749fe3a80] [c0000000004ea2b8] .dev_change_flags+0x1f0/0x288 >> <4>[c000000749fe3b20] [d00000001b7f11b8] .ipoib_remove_one+0xb8/0x140 >> [ib_ipoib] >> <4>[c000000749fe3bc0] [d00000001210425c] .ib_unregister_client+0xb4/0x1b8 >> [ib_core] >> <4>[c000000749fe3c90] [d00000001b7ffde8] .ipoib_cleanup_module+0x20/0x60 >> [ib_ipoib] >> <4>[c000000749fe3d20] [c0000000000ec408] .SyS_delete_module+0x238/0x320 >> <4>[c000000749fe3e30] [c0000000000085b4] syscall_exit+0x0/0x40 >> <1>Unable to handle kernel paging request for data at address >> 0x45000027228d1ffb >> <1>Faulting instruction address: 0xc0000000005a8e88 >> 12:mon> e >> cpu 0x12: Vector: 300 (Data Access) at [c000000749fe3250] >> pc: c0000000005a8e88: .wait_for_common+0xb8/0x268 >> lr: c0000000005a8e20: .wait_for_common+0x50/0x268 >> sp: c000000749fe34d0 >> msr: 8000000000009032 >> dar: 45000027228d1ffb >> dsisr: 42000000 >> current = 0xc00000074b4ce0e0 >> paca = 0xc000000000f64a00 >> pid = 13605, comm = modprobe >> 12:mon> >> >> Thanks >> Pradeep > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
