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| author | Michael Neuling <mikey@neuling.org> | 2013-06-24 01:47:22 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-25 17:07:19 -0400 |
| commit | b101957a5871ec616e18a8a6f0330d0e06a05754 (patch) | |
| tree | 699aafaf6df6ae038ce24e97071dc36cd9faa935 /arch/powerpc/kernel/signal_32.c | |
| parent | 0f4a56e16d5fc9028b62ba529177a3109513e111 (diff) | |
powerpc/hw_brk: Fix setting of length for exact mode breakpoints
commit b0b0aa9c7faf94e92320eabd8a1786c7747e40a8 upstream.
The smallest match region for both the DABR and DAWR is 8 bytes, so the
kernel needs to filter matches when users want to look at regions smaller than
this.
Currently we set the length of PPC_BREAKPOINT_MODE_EXACT breakpoints to 8.
This is wrong as in exact mode we should only match on 1 address, hence the
length should be 1.
This ensures that the kernel will filter out any exact mode hardware breakpoint
matches on any addresses other than the requested one.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Reported-by: Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/kernel/signal_32.c')
0 files changed, 0 insertions, 0 deletions