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-rw-r--r--tapset/i686/syscalls.stp2
1 files changed, 1 insertions, 1 deletions
diff --git a/tapset/i686/syscalls.stp b/tapset/i686/syscalls.stp
index 8e69f622..2a89c19d 100644
--- a/tapset/i686/syscalls.stp
+++ b/tapset/i686/syscalls.stp
@@ -119,7 +119,7 @@ probe syscall.set_zone_reclaim.return =
#
probe syscall.sigaltstack = kernel.function("sys_sigaltstack") {
name = "sigaltstack"
- ussp = %( kernel_vr < "2.6.25" %? $ebx %: $bx %)
+ ussp = %( kernel_vr < "2.6.25" %? $ebx %: %( kernel_vr < "2.6.29" %? $bx %: $regs->bx %) %)
argstr = sprintf("%p", ussp)
}
probe syscall.sigaltstack.return = kernel.function("sys_sigaltstack").return {