• Tero Roponen's avatar
    slub: Fix a crash during slabinfo -v · 37d57443
    Tero Roponen authored
    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: default avatarChristoph Lameter <cl@linux.com>
    Signed-off-by: default avatarTero Roponen <tero.roponen@gmail.com>
    Signed-off-by: default avatarPekka Enberg <penberg@kernel.org>
slub.c 111 KB