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-rw-r--r--tapset/i686/syscalls.stp4
1 files changed, 2 insertions, 2 deletions
diff --git a/tapset/i686/syscalls.stp b/tapset/i686/syscalls.stp
index 75bc960d..8e69f622 100644
--- a/tapset/i686/syscalls.stp
+++ b/tapset/i686/syscalls.stp
@@ -119,8 +119,8 @@ probe syscall.set_zone_reclaim.return =
#
probe syscall.sigaltstack = kernel.function("sys_sigaltstack") {
name = "sigaltstack"
- ebx = $ebx
- argstr = sprintf("%p", $ebx)
+ ussp = %( kernel_vr < "2.6.25" %? $ebx %: $bx %)
+ argstr = sprintf("%p", ussp)
}
probe syscall.sigaltstack.return = kernel.function("sys_sigaltstack").return {
name = "sigaltstack"