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(parent: 2e2dc1d) | patch
sparc64: Allocate sufficient stack space in ftrace stubs.
authorDavid S. Miller <davem@davemloft.net>
Wed, 14 Apr 2010 01:59:02 +0000 (18:59 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 14 Apr 2010 01:59:02 +0000 (18:59 -0700)
commit035df35d968323f6f463c8789553e8589efcbcd4
tree6932aa9c85e37cf7d2e910a171b46ffacdb834a8tree | snapshot (tar.gz zip)
parent2e2dc1d755cc5609d0c46d47f7d171318b3bffcdcommit | diff
sparc64: Allocate sufficient stack space in ftrace stubs.

128 bytes is sufficient for the register window save area, but the
calling conventions allow the callee to save up to 6 incoming argument
registers into the stack frame after the register window save area.

This means a minimal stack frame is 176 bytes (128 + (6 * 8)).

This fixes random crashes when using the function tracer.

Reported-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc/lib/mcount.S diff | blob | blame | history