diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2008-02-27 14:57:40 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 11:40:51 -0400 |
| commit | e3100c82abd9aa643dc15828202aceeae3504e03 (patch) | |
| tree | dc4e1b69224a9e795fa9058dcc97c6e77cb71d4d /Documentation/unaligned-memory-access.txt | |
| parent | b8c2d3dfbc117dff26058fbac316b8acfc2cb5f7 (diff) | |
x86: check physical address range in ioremap
Roland Dreier reported in http://lkml.org/lkml/2008/2/27/194
[ 8425.915139] BUG: unable to handle kernel paging request at ffffc20001a0a000
[ 8425.919087] IP: [<ffffffff8021dacc>] clflush_cache_range+0xc/0x25
[ 8425.919087] PGD 1bf80e067 PUD 1bf80f067 PMD 1bb497067 PTE 80000047000ee17b
This is on a Intel machine with 36bit physical address space. The PTE
entry references 47000ee000, which is outside of it.
Add a check for the physical address space and warn/printk about the
stupid caller.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/unaligned-memory-access.txt')
0 files changed, 0 insertions, 0 deletions