Explicitly skip tracing x32 system calls

[lttng-modules.git] / lttng-syscalls.c

diff --git a/lttng-syscalls.c b/lttng-syscalls.c
index 4596ccfc1280f82eaefdd0b5b6462bceffee0f8f..3399c9b07de90dcc39cc0a28fe69f0fdb4079eea 100644 (file)
--- a/lttng-syscalls.c
+++ b/lttng-syscalls.c
@@ -392,6 +392,12 @@ void syscall_entry_probe(void *__data, struct pt_regs *regs, long id)
        const struct trace_syscall_entry *table, *entry;
        size_t table_len;
 
+#ifdef CONFIG_X86_X32_ABI
+       if (in_x32_syscall()) {
+               /* x32 system calls are not supported. */
+               return;
+       }
+#endif
        if (unlikely(in_compat_syscall())) {
                struct lttng_syscall_filter *filter = chan->sc_filter;
 
@@ -539,6 +545,12 @@ void syscall_exit_probe(void *__data, struct pt_regs *regs, long ret)
        size_t table_len;
        long id;
 
+#ifdef CONFIG_X86_X32_ABI
+       if (in_x32_syscall()) {
+               /* x32 system calls are not supported. */
+               return;
+       }
+#endif
        id = syscall_get_nr(current, regs);
        if (unlikely(in_compat_syscall())) {
                struct lttng_syscall_filter *filter = chan->sc_filter;