[DPDK/ethdev Bug 1549] free() of non rte_malloc() memory in DMA dev

[DPDK/ethdev Bug 1549] free() of non rte_malloc() memory in DMA dev

[bugzilla]

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https://bugs.dpdk.org/show_bug.cgi?id=1549

            Bug ID: 1549
           Summary: free() of non rte_malloc() memory in DMA dev
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: ethdev
          Assignee: dev@dpdk.org
          Reporter: stephen@networkplumber.org
  Target Milestone: ---

If GCC checking of rte_malloc functions is added, then the following bug in the
DMA device driver is shown:

[982/2957] Compiling C object
drivers/libtmp_rte_dma_idxd.a.p/dma_idxd_idxd_pci.c.o
In function ‘init_pci_device’,
    inlined from ‘idxd_dmadev_probe_pci’ at
../drivers/dma/idxd/idxd_pci.c:362:8:
../drivers/dma/idxd/idxd_pci.c:304:9: warning: ‘free’ called on pointer
returned from a mismatched allocation function [-Wmismatched-dealloc]
  304 |         free(pci);
      |         ^~~~~~~~~
../drivers/dma/idxd/idxd_pci.c:182:15: note: returned from ‘rte_malloc’
  182 |         pci = rte_malloc(NULL, sizeof(*pci), 0);
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/dma/idxd/idxd_pci.c:304:9: warning: ‘free’ called on pointer
returned from a mismatched allocation function [-Wmismatched-dealloc]
  304 |         free(pci);
      |         ^~~~~~~~~
../drivers/dma/idxd/idxd_pci.c:182:15: note: returned from ‘rte_malloc’
  182 |         pci = rte_malloc(NULL, sizeof(*pci), 0);
      |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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