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authorKeith Busch <keith.busch@intel.com>2015-10-15 21:38:48 +0200
committerJens Axboe <axboe@fb.com>2015-10-15 21:38:48 +0200
commit0dfc70c33409afc232ef0b9ec210535dfbf9bc61 (patch)
tree3ce38a73734b4a16364b1f2ba59a45df95dcdb6b /firmware/mts_cdma.fw.ihex
parentblock: don't release bdi while request_queue has live references (diff)
downloadlinux-0dfc70c33409afc232ef0b9ec210535dfbf9bc61.tar.xz
linux-0dfc70c33409afc232ef0b9ec210535dfbf9bc61.zip
NVMe: Fix memory leak on retried commands
Resources are reallocated for requeued commands, so unmap and release the iod for the failed command. It's a pretty bad memory leak and causes a kernel hang if you remove a drive because of a busy dma pool. You'll get messages spewing like this: nvme 0000:xx:xx.x: dma_pool_destroy prp list 256, ffff880420dec000 busy and lock up pci and the driver since removal never completes while holding a lock. Cc: stable@vger.kernel.org Cc: <stable@vger.kernel.org> # 4.0.x- Signed-off-by: Keith Busch <keith.busch@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'firmware/mts_cdma.fw.ihex')
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