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Date: Fri, 16 Jan 2015 12:05:55 +0100 From: Christian Gmeiner <christian.gmeiner@...il.com> To: LKML <linux-kernel@...r.kernel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: fec: warning found by dma debug [ 17.946189] ------------[ cut here ]------------ [ 17.950848] WARNING: CPU: 0 PID: 3 at lib/dma-debug.c:1093 check_unmap+0x858/0xa10() [ 17.958674] fec 2188000.ethernet: DMA-API: device driver tries to free DMA memory it has not allocated [device address=0x0000000000000000] [size=34 bytes] [ 17.972564] Modules linked in: etnaviv(C) imx_ipuv3_crtc imx_hdmi imxdrm drm_kms_helper drm [ 17.981086] CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G WC 3.19.0-rc4+ #31 [ 17.988893] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [ 17.995488] Backtrace: [ 17.997982] [<c00135f0>] (dump_backtrace) from [<c0013948>] (show_stack+0x20/0x24) [ 18.005609] r6:c0883d40 r5:ffffffff r4:00000000 r3:dc8cb100 [ 18.011369] [<c0013928>] (show_stack) from [<c06a2ac0>] (dump_stack+0x78/0xc4) [ 18.018683] [<c06a2a48>] (dump_stack) from [<c002c0a4>] (warn_slowpath_common+0x88/0xc4) [ 18.026845] r5:00000445 r4:e5205c80 [ 18.030479] [<c002c01c>] (warn_slowpath_common) from [<c002c19c>] (warn_slowpath_fmt+0x40/0x48) [ 18.039231] r8:00000000 r7:00000000 r6:00000022 r5:c0af9e18 r4:00000000 [ 18.046066] [<c002c160>] (warn_slowpath_fmt) from [<c038dc30>] (check_unmap+0x858/0xa10) [ 18.054216] r3:c089bb90 r2:c0884270 [ 18.057846] [<c038d3d8>] (check_unmap) from [<c038e0c4>] (debug_dma_unmap_page+0x80/0x88) [ 18.066087] r10:e38890c0 r9:00000000 r8:00000001 r7:00000001 r6:e53f8850 r5:00000000 [ 18.074069] r4:00000022 [ 18.076647] [<c038e044>] (debug_dma_unmap_page) from [<c045e368>] (fec_enet_rx_napi+0x7c0/0xb94) [ 18.085494] r8:00001400 r7:e795c780 r6:e389a0c0 r5:00000000 r4:00000000 [ 18.092349] [<c045dba8>] (fec_enet_rx_napi) from [<c053f14c>] (net_rx_action+0x130/0x568) [ 18.100537] r10:c0aefa80 r9:ffff91be r8:e5205e48 r7:00000040 r6:0000012c r5:00000001 [ 18.108537] r4:e38897b0 [ 18.111113] [<c053f01c>] (net_rx_action) from [<c0030768>] (__do_softirq+0x11c/0x794) [ 18.118999] r10:00000100 r9:c0053c58 r8:00000004 r7:c0b5ddac r6:00000008 r5:c0af208c [ 18.127008] r4:00000003 [ 18.129573] [<c003064c>] (__do_softirq) from [<c0030e20>] (run_ksoftirqd+0x40/0x6c) [ 18.137291] r10:00000000 r9:c0053c58 r8:c0b017cc r7:00000000 r6:0000103c r5:e5157a00 [ 18.145298] r4:00000001 [ 18.147878] [<c0030de0>] (run_ksoftirqd) from [<c0053de4>] (smpboot_thread_fn+0x1b0/0x354) [ 18.156208] [<c0053c34>] (smpboot_thread_fn) from [<c004f114>] (kthread+0x104/0x128) [ 18.164011] r10:00000000 r9:00000000 r8:00000000 r7:c0053c34 r6:e5157a00 r5:00000000 [ 18.172006] r4:e5157800 r3:00000005 [ 18.175651] [<c004f010>] (kthread) from [<c000fc08>] (ret_from_fork+0x14/0x2c) [ 18.182937] r7:00000000 r6:00000000 r5:c004f010 r4:e5157800 [ 18.188680] ---[ end trace dcf0152c9771f20a ]--- -- Christian Gmeiner, MSc https://soundcloud.com/christian-gmeiner -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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