Messages in this thread | | | Date | Mon, 19 Jan 2009 22:31:06 +0100 | From | Ingo Molnar <> | Subject | WARNING: at drivers/dma/dmaengine.c:352 dma_issue_pending_all+0x77/0x15d() |
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FYI, i'm getting this on a testbox, on v2.6.29-rc2:
[ 78.930438] ------------[ cut here ]------------ [ 78.932162] ADDRCONF(NETDEV_UP): eth2: link is not ready [ 78.940748] WARNING: at drivers/dma/dmaengine.c:352 dma_issue_pending_all+0x77/0x15d() [ 78.948876] Hardware name: P4DC6 [ 78.952232] client called dma_issue_pending_all without a referencePid: 0, comm: swapper Not tainted 2.6.29-rc2-tip #1 [ 78.963176] Call Trace: [ 78.965747] [<c0177cc9>] warn_slowpath+0x90/0xa6 [ 78.970578] [<c01a7266>] ? __lock_acquire+0x6f2/0x748 [ 78.975835] [<c01a56a9>] ? mark_held_locks+0x45/0x5c [ 78.981012] [<c0d35100>] ? napi_complete+0x7a/0x97 [ 78.986016] [<c01a587b>] ? trace_hardirqs_on_caller+0x112/0x167 [ 78.992139] [<c01a58db>] ? trace_hardirqs_on+0xb/0xd [ 78.997311] [<c075e8d4>] ? e1000_clean+0x5a6/0x5f2 [ 79.002306] [<c0d06b34>] dma_issue_pending_all+0x77/0x15d [ 79.007912] [<c0d358ea>] net_rx_action+0x2cc/0x2e6 [ 79.012911] [<c017f69a>] __do_softirq+0xbb/0x1cf [ 79.017738] [<c017f5df>] ? __do_softirq+0x0/0x1cf [ 79.022644] <IRQ> [<c01cadc5>] ? handle_fasteoi_irq+0x0/0x124 [ 79.028778] [<c017f585>] ? irq_exit+0x50/0xaa [ 79.033340] [<c012aade>] ? do_IRQ+0x119/0x12f [ 79.037901] [<c0127d8c>] ? common_interrupt+0x2c/0x34 [ 79.043163] [<c01a00d8>] ? tick_broadcast_oneshot_control+0x10c/0x42e [ 79.049807] [<c0152398>] ? native_safe_halt+0xa/0xc [ 79.054896] [<c012f7c1>] ? default_idle+0xbf/0xd2 [ 79.059806] [<c0125765>] ? cpu_idle+0x16a/0x1a4 [ 79.064564] [<c0f4f41f>] ? rest_init+0x53/0x55 [ 79.069210] ---[ end trace 230444e9b1c5e1e1 ]--- [ 79.074319] e1000: eth2 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX [ 79.083245] ADDRCONF(NETDEV_CHANGE): eth2: link becomes ready
the driver that just ran was e1000.
Btw., this format string:
WARN_ONCE(dmaengine_ref_count == 0, "client called %s without a reference", __func__);
is missing a \n.
Ingo
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