This one comes and goes... ------------[ cut here ]------------ WARNING: CPU: 2 PID: 521 at lib/dma-debug.c:593 debug_dma_assert_idle+0x159/0x1d0() snd_hda_intel 0000:00:07.0: DMA-API: cpu touching an active dma mapped cacheline [cln=0x03019000] ------------[ cut here ]------------ WARNING: CPU: 3 PID: 927 at lib/dma-debug.c:593 debug_dma_assert_idle+0x159/0x1d0() snd_hda_intel 0000:00:07.0: DMA-API: cpu touching an active dma mapped cacheline [cln=0x03019000] CPU: 3 PID: 927 Comm: firewalld Not tainted 3.15.0-0.rc2.git1.1.fc21.i686 #1 Call Trace: [<c0ae29dd>] dump_stack+0x48/0x60 [<c0454402>] warn_slowpath_common+0x82/0xa0 [<c0750e09>] ? debug_dma_assert_idle+0x159/0x1d0 [<c0750e09>] ? debug_dma_assert_idle+0x159/0x1d0 [<c045445e>] warn_slowpath_fmt+0x3e/0x60 [<c0750e09>] debug_dma_assert_idle+0x159/0x1d0 [<c0586189>] ? anon_vma_prepare+0x29/0x140 [<c057a5be>] do_wp_page+0xce/0x890 [<c0640065>] ? ext4_releasepage+0x95/0x130 [<c057cbc2>] handle_mm_fault+0x662/0xb70 [<c0640065>] ? ext4_releasepage+0x95/0x130 [<c0aee997>] __do_page_fault+0x1a7/0x5d0 [<c04adcac>] ? trace_hardirqs_on_caller+0x13c/0x1e0 [<c04ff83c>] ? __audit_syscall_entry+0x8c/0xe0 [<c04add5b>] ? trace_hardirqs_on+0xb/0x10 [<c04adcac>] ? trace_hardirqs_on_caller+0x13c/0x1e0 [<c04adcac>] ? trace_hardirqs_on_caller+0x13c/0x1e0 [<c0aeedc0>] ? __do_page_fault+0x5d0/0x5d0 [<c0aeedda>] do_page_fault+0x1a/0x20 [<c0aeb7b4>] error_code+0x6c/0x74 ---[ end trace 0464944e27da06b8 ]--- Mapped at: [<c074eeb2>] debug_dma_alloc_coherent+0x22/0x70 [<f839de90>] snd_dma_alloc_pages+0x170/0x260 [snd_pcm] [<f839dfe2>] snd_dma_alloc_pages_fallback+0x62/0x90 [snd_pcm] [<f839e3b0>] snd_malloc_sgbuf_pages+0xf0/0x211 [snd_pcm] [<f839df23>] snd_dma_alloc_pages+0x203/0x260 [snd_pcm] CPU: 2 PID: 521 Comm: firewalld Tainted: G W 3.15.0-0.rc2.git1.1.fc21.i686 #1 Call Trace: [<c0ae29dd>] dump_stack+0x48/0x60 [<c0454402>] warn_slowpath_common+0x82/0xa0 [<c0750e09>] ? debug_dma_assert_idle+0x159/0x1d0 [<c0750e09>] ? debug_dma_assert_idle+0x159/0x1d0 [<c045445e>] warn_slowpath_fmt+0x3e/0x60 [<c0750e09>] debug_dma_assert_idle+0x159/0x1d0 [<c0586189>] ? anon_vma_prepare+0x29/0x140 [<c057a5be>] do_wp_page+0xce/0x890 [<c0640065>] ? ext4_releasepage+0x95/0x130 [<c057cbc2>] handle_mm_fault+0x662/0xb70 [<c0640065>] ? ext4_releasepage+0x95/0x130 [<c0aee997>] __do_page_fault+0x1a7/0x5d0 [<c04ff83c>] ? __audit_syscall_entry+0x8c/0xe0 [<c04add5b>] ? trace_hardirqs_on+0xb/0x10 [<c04adcac>] ? trace_hardirqs_on_caller+0x13c/0x1e0 [<c0aeedc0>] ? __do_page_fault+0x5d0/0x5d0 [<c0aeedda>] do_page_fault+0x1a/0x20 [<c0aeb7b4>] error_code+0x6c/0x74 ---[ end trace 0464944e27da06b9 ]--- Mapped at: [<c074eeb2>] debug_dma_alloc_coherent+0x22/0x70 [<f839de90>] snd_dma_alloc_pages+0x170/0x260 [snd_pcm] [<f839dfe2>] snd_dma_alloc_pages_fallback+0x62/0x90 [snd_pcm] [<f839e3b0>] snd_malloc_sgbuf_pages+0xf0/0x211 [snd_pcm] [<f839df23>] snd_dma_alloc_pages+0x203/0x260 [snd_pcm] https://bugzilla.redhat.com/attachment.cgi?id=888686 dma debug: account for cachelines and read-only mappings in overlap tracking https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/lib/dma-debug.c?id=3b7a6418c7494b8bf0bf0537ddee1dedbca10f51 Are these two in some relation? poma _______________________________________________ kernel mailing list kernel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/kernel
