/* * File: sound/soc/blackfin/bf5xx-ad1836.c * Author: Barry Song * * Created: Aug 4 2009 * Description: Board driver for ad1836 sound chip * * Bugs: Enter bugs at http://blackfin.uclinux.org/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include "../codecs/ad1836.h" static struct snd_soc_card bf5xx_ad1836; static int bf5xx_ad1836_init(struct snd_soc_pcm_runtime *rtd) { struct snd_soc_dai *cpu_dai = rtd->cpu_dai; unsigned int channel_map[] = {0, 4, 1, 5, 2, 6, 3, 7}; int ret = 0; /* set cpu DAI channel mapping */ ret = snd_soc_dai_set_channel_map(cpu_dai, ARRAY_SIZE(channel_map), channel_map, ARRAY_SIZE(channel_map), channel_map); if (ret < 0) return ret; ret = snd_soc_dai_set_tdm_slot(cpu_dai, 0xFF, 0xFF, 8, 32); if (ret < 0) return ret; return 0; } #define BF5XX_AD1836_DAIFMT (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_IF | \ SND_SOC_DAIFMT_CBM_CFM) static struct snd_soc_dai_link bf5xx_ad1836_dai = { .name = "ad1836", .stream_name = "AD1836", .codec_dai_name = "ad1836-hifi", .platform_name = "bfin-i2s-pcm-audio", .dai_fmt = BF5XX_AD1836_DAIFMT, .init = bf5xx_ad1836_init, }; static struct snd_soc_card bf5xx_ad1836 = { .name = "bfin-ad1836", .owner = THIS_MODULE, .dai_link = &bf5xx_ad1836_dai, .num_links = 1, }; static int bf5xx_ad1836_driver_probe(struct platform_device *pdev) { struct snd_soc_card *card = &bf5xx_ad1836; const char **link_name; int ret; link_name = pdev->dev.platform_data; if (!link_name) { dev_err(&pdev->dev, "No platform data supplied\n"); return -EINVAL; } bf5xx_ad1836_dai.cpu_dai_name = link_name[0]; bf5xx_ad1836_dai.codec_name = link_name[1]; card->dev = &pdev->dev; platform_set_drvdata(pdev, card); ret = devm_snd_soc_register_card(&pdev->dev, card); if (ret) dev_err(&pdev->dev, "Failed to register card\n"); return ret; } static struct platform_driver bf5xx_ad1836_driver = { .driver = { .name = "bfin-snd-ad1836", .pm = &snd_soc_pm_ops, }, .probe = bf5xx_ad1836_driver_probe, }; module_platform_driver(bf5xx_ad1836_driver); /* Module information */ MODULE_AUTHOR("Barry Song"); MODULE_DESCRIPTION("ALSA SoC AD1836 board driver"); MODULE_LICENSE("GPL"); inux/net-next.git/commit/sound?id=a76a82a3e38c8d3fb6499e3dfaeb0949241ab588'>sound/soc/intel/haswell
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authorPeter Zijlstra <peterz@infradead.org>2017-01-26 16:39:55 +0100
committerIngo Molnar <mingo@kernel.org>2017-01-30 11:41:25 +0100
commita76a82a3e38c8d3fb6499e3dfaeb0949241ab588 (patch)
treeb5bc906278fe1ac66d75de984d26bf59b43b3ed8 /sound/soc/intel/haswell
parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
perf/core: Fix use-after-free bug
Dmitry reported a KASAN use-after-free on event->group_leader. It turns out there's a hole in perf_remove_from_context() due to event_function_call() not calling its function when the task associated with the event is already dead. In this case the event will have been detached from the task, but the grouping will have been retained, such that group operations might still work properly while there are live child events etc. This does however mean that we can miss a perf_group_detach() call when the group decomposes, this in turn can then lead to use-after-free. Fix it by explicitly doing the group detach if its still required. Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # v4.5+ Cc: syzkaller <syzkaller@googlegroups.com> Fixes: 63b6da39bb38 ("perf: Fix perf_event_exit_task() race") Link: http://lkml.kernel.org/r/20170126153955.GD6515@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'sound/soc/intel/haswell')