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    slub: Fix a crash during slabinfo -v · 37d57443
    Tero Roponen 提交于
    Commit f7cb1933 ("SLUB: Pass active
    and inactive redzone flags instead of boolean to debug functions")
    missed two instances of check_object(). This caused a lot of warnings
    during 'slabinfo -v' finally leading to a crash:
    
      BUG ext4_xattr: Freepointer corrupt
      ...
      BUG buffer_head: Freepointer corrupt
      ...
      BUG ext4_alloc_context: Freepointer corrupt
      ...
      ...
      BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
      IP: [<ffffffff810a291f>] file_sb_list_del+0x1c/0x35
      PGD 79d78067 PUD 79e67067 PMD 0
      Oops: 0002 [#1] SMP
      last sysfs file: /sys/kernel/slab/:t-0000192/validate
    
    This patch fixes the problem by converting the two missed instances.
    Acked-by: NChristoph Lameter <cl@linux.com>
    Signed-off-by: NTero Roponen <tero.roponen@gmail.com>
    Signed-off-by: NPekka Enberg <penberg@kernel.org>
    37d57443
slub.c 110.6 KB