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| author | Jerry Hoemann <jerry.hoemann@hp.com> | 2013-04-30 15:15:55 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-11 13:38:03 -0700 |
| commit | dadd72be605e99445bedfacce8d07a85ac84eb41 (patch) | |
| tree | 4f5f95509767b89bc3b205dc50370806994784d3 /fs/binfmt_som.c | |
| parent | d47f90f3cb58908bb6f6720b678e37e57028a590 (diff) | |
| download | kernel_samsung_aries-dadd72be605e99445bedfacce8d07a85ac84eb41.zip kernel_samsung_aries-dadd72be605e99445bedfacce8d07a85ac84eb41.tar.gz kernel_samsung_aries-dadd72be605e99445bedfacce8d07a85ac84eb41.tar.bz2 | |
x86/mm: account for PGDIR_SIZE alignment
Patch for -stable. Function find_early_table_space removed upstream.
Fixes panic in alloc_low_page due to pgt_buf overflow during
init_memory_mapping.
find_early_table_space sizes pgt_buf based upon the size of the
memory being mapped, but it does not take into account the alignment
of the memory. When the region being mapped spans a 512GB (PGDIR_SIZE)
alignment, a panic from alloc_low_pages occurs.
kernel_physical_mapping_init takes into account PGDIR_SIZE alignment.
This causes an extra call to alloc_low_page to be made. This extra call
isn't accounted for by find_early_table_space and causes a kernel panic.
Change is to take into account PGDIR_SIZE alignment in find_early_table_space.
Signed-off-by: Jerry Hoemann <jerry.hoemann@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/binfmt_som.c')
0 files changed, 0 insertions, 0 deletions