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    i7core_edac: fix panic in udimm sysfs attributes registration · 64aab720
    Marcin Slusarz 提交于
    Array of udimm sysfs attributes was not ended with NULL marker, leading to
    dereference of random memory.
    
      EDAC DEBUG: edac_create_mci_instance_attributes: edac_create_mci_instance_attributes() file udimm0
      EDAC DEBUG: edac_create_mci_instance_attributes: edac_create_mci_instance_attributes() file udimm1
      EDAC DEBUG: edac_create_mci_instance_attributes: edac_create_mci_instance_attributes() file udimm2
      BUG: unable to handle kernel NULL pointer dereference at 00000000000001a4
      IP: [<ffffffff81330b36>] edac_create_mci_instance_attributes+0x148/0x1f1
      Pid: 1, comm: swapper Not tainted 2.6.36-rc3-nv+ #483 P6T SE/System Product Name
      RIP: 0010:[<ffffffff81330b36>]  [<ffffffff81330b36>] edac_create_mci_instance_attributes+0x148/0x1f1
      (...)
      Call Trace:
       [<ffffffff81330b86>] edac_create_mci_instance_attributes+0x198/0x1f1
       [<ffffffff81330c9a>] edac_create_sysfs_mci_device+0xbb/0x2b2
       [<ffffffff8132f533>] edac_mc_add_mc+0x46b/0x557
       [<ffffffff81428901>] i7core_probe+0xccf/0xec0
      RIP  [<ffffffff81330b36>] edac_create_mci_instance_attributes+0x148/0x1f1
      ---[ end trace 20de320855b81d78 ]---
      Kernel panic - not syncing: Attempted to kill init!
    Signed-off-by: NMarcin Slusarz <marcin.slusarz@gmail.com>
    Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
    Acked-by: NDoug Thompson <dougthompson@xmission.com>
    Cc: <stable@kernel.org>
    Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    64aab720
i7core_edac.c 53.9 KB