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authorFenghua Yu <fenghua.yu@intel.com>2024-01-30 02:39:54 +0100
committerVinod Koul <vkoul@kernel.org>2024-05-04 14:22:04 +0200
commit76e43fa6a456787bad31b8d0daeabda27351a480 (patch)
tree2d1dfd8bb33179364617cd1c2bee292f29e0573a /drivers/dma/fsl-edma-trace.h
parentdmaengine: xilinx: xdma: fix module autoloading (diff)
downloadlinux-76e43fa6a456787bad31b8d0daeabda27351a480.tar.xz
linux-76e43fa6a456787bad31b8d0daeabda27351a480.zip
dmaengine: idxd: Avoid unnecessary destruction of file_ida
file_ida is allocated during cdev open and is freed accordingly during cdev release. This sequence is guaranteed by driver file operations. Therefore, there is no need to destroy an already empty file_ida when the WQ cdev is removed. Worse, ida_free() in cdev release may happen after destruction of file_ida per WQ cdev. This can lead to accessing an id in file_ida after it has been destroyed, resulting in a kernel panic. Remove ida_destroy(&file_ida) to address these issues. Fixes: e6fd6d7e5f0f ("dmaengine: idxd: add a device to represent the file opened") Signed-off-by: Lijun Pan <lijun.pan@intel.com> Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/20240130013954.2024231-1-fenghua.yu@intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/fsl-edma-trace.h')
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