From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tetsuo Handa Subject: [3.2-rc4] pcnet32: DMA-API: device driver tries to sync DMA memory it has not allocated Date: Fri, 09 Dec 2011 12:40:46 +0900 Message-ID: <201112090340.pB93ek9i086855@www262.sakura.ne.jp> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-2022-JP" Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org I saw this warning twice. Never seen until 3.1. [ 90.160533] ------------[ cut here ]------------ [ 90.166508] WARNING: at lib/dma-debug.c:966 check_sync+0x53b/0x540() [ 90.204591] Hardware name: VMware Virtual Platform [ 90.210719] pcnet32 0000:02:00.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address=0x0000000030e56810] [size=106 bytes] [ 90.254360] Modules linked in: ipv6 ccsecurity pcnet32 [ 90.286588] Pid: 0, comm: swapper/0 Not tainted 3.2.0-rc4-00336-g09d9673-dirty #10 [ 90.296227] Call Trace: [ 90.327395] [] ? check_sync+0x53b/0x540 [ 90.333565] [] warn_slowpath_common+0x7c/0xa0 [ 90.365453] [] ? check_sync+0x53b/0x540 [ 90.371653] [] warn_slowpath_fmt+0x31/0x40 [ 90.403766] [] check_sync+0x53b/0x540 [ 90.435377] [] ? dbg_redzone1+0x11/0x30 [ 90.441526] [] debug_dma_sync_single_for_cpu+0x4e/0x60 [ 90.474657] [] ? __kmalloc_track_caller+0xe5/0x160 [ 90.481987] [] ? __alloc_skb+0x61/0x110 [ 90.488108] [] pcnet32_rx_entry+0x287/0x400 [pcnet32] [ 90.495788] [] ? trace_hardirqs_off+0xb/0x10 [ 90.526820] [] ? local_clock+0x3b/0x60 [ 90.532827] [] pcnet32_rx+0x50/0xa0 [pcnet32] [ 90.539547] [] pcnet32_poll+0x2a/0x100 [pcnet32] [ 90.572516] [] net_rx_action+0x137/0x160 [ 90.579053] [] ? trace_hardirqs_on_caller+0x90/0x100 [ 90.586503] [] __do_softirq+0xd4/0x130 [ 90.616903] [] ? local_bh_enable_ip+0xd0/0xd0 [ 90.624046] [] ? irq_exit+0x42/0x70 [ 90.630750] [] ? smp_apic_timer_interrupt+0x33/0x40 [ 90.662535] [] ? apic_timer_interrupt+0x2f/0x34 [ 90.696651] [] ? check_prevs_add+0x68/0x100 [ 90.703668] [] ? default_idle+0x34/0x60 [ 90.709802] [] ? cpu_idle+0x68/0xb0 [ 90.742827] [] ? rest_init+0xa1/0xb0 [ 90.748840] [] ? __read_lock_failed+0x20/0x20 [ 90.755670] [] ? start_kernel+0x217/0x2b0 [ 90.762022] [] ? loglevel+0x30/0x30 [ 90.767714] [] ? i386_start_kernel+0x64/0xb0 [ 90.804957] ---[ end trace 7455a0a77cd44df9 ]---