Takashi Iwai 68ba825a39 ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams ... commit 40cab6e88c upstream. OSS PCM stream management isn't modal but it allows ioctls issued at any time for changing the parameters. In the previous hardening patch ("ALSA: pcm: Avoid potential races between OSS ioctls and read/write"), we covered these races and prevent the corruption by protecting the concurrent accesses via params_lock mutex. However, this means that some ioctls that try to change the stream parameter (e.g. channels or format) would be blocked until the read/write finishes, and it may take really long. Basically changing the parameter while reading/writing is an invalid operation, hence it's even more user-friendly from the API POV if it returns -EBUSY in such a situation. This patch adds such checks in the relevant ioctls with the addition of read/write access refcount. Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2018-04-24 09:32:09 +02:00
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acpi
asm-generic	mm/vmalloc: add interfaces to free unmapped page table	2018-03-28 18:40:14 +02:00
clocksource
crypto	crypto: poly1305 - remove ->setkey() method	2018-02-16 20:09:43 +01:00
drm	drm: Allow determining if current task is output poll worker	2018-03-18 11:17:48 +01:00
dt-bindings	ARM: dts: Fix omap3 off mode pull defines	2017-11-21 09:21:19 +01:00
keys
kvm	KVM: arm/arm64: arch_timer: Preserve physical dist. active state on LR.active	2015-11-24 18:07:40 +01:00
linux	HID: core: Fix size as type u32	2018-04-24 09:32:07 +02:00
math-emu
media	videobuf2-core: Check user space planes array in dqbuf	2016-05-04 14:48:50 -07:00
memory
misc
net	slip: Check if rstate is initialized before uncompressing	2018-04-24 09:32:04 +02:00
pcmcia
ras
rdma	RDMA/ucma: Introduce safer rdma_addr_size() variants	2018-04-08 11:51:59 +02:00
rxrpc
scsi	scsi: sg: disable SET_FORCE_LOW_DMA	2018-01-23 19:50:14 +01:00
soc	ARM: at91: define LPDDR types	2017-03-12 06:37:24 +01:00
sound	ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams	2018-04-24 09:32:09 +02:00
target	target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK	2018-01-17 09:35:31 +01:00
trace	clk: fix a panic error caused by accessing NULL pointer	2018-02-25 11:03:41 +01:00
uapi	PCI: Make PCI_ROM_ADDRESS_MASK a 32-bit constant	2018-04-08 11:51:57 +02:00
video	drm/imx: Match imx-ipuv3-crtc components using device node in platform data	2016-06-07 18:14:37 -07:00
xen	fix xen_swiotlb_dma_mmap prototype	2017-10-05 09:41:48 +02:00
Kbuild