diff options
authorDaniel P. Berrangé <berrange@redhat.com>2021-01-06 13:02:39 +0000
committerStefan Hajnoczi <stefanha@redhat.com>2021-02-01 10:50:55 +0000
commit09612de7e9adbe9666a8fa4cc60bab0a29a68ed1 (patch)
parent9f4e519fd7acbdb027d22e13e4f1cd8e79969dec (diff)
tracetool: also strip %l and %ll from systemtap format strings
All variables are 64-bit and so %l / %ll are not required, and the latter is actually invalid: $ sudo stap -e 'probe begin{printf ("BEGIN")}' -I . parse error: invalid or missing conversion specifier saw: operator ',' at ./qemu-system-x86_64-log.stp:15118:101 source: printf("%d@%d vhost_vdpa_set_log_base dev: %p base: 0x%x size: %llu refcnt: %d fd: %d log: %p\n", pid(), gettimeofday_ns(), dev, base, size, refcnt, fd, log) ^ Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Laurent Vivier <lvivier@redhat.com> Message-id: 20210106130239.1004729-1-berrange@redhat.com [Fixed "simiarly" typo found by Laurent Vivier <lvivier@redhat.com> --Stefan] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
1 files changed, 6 insertions, 1 deletions
diff --git a/scripts/tracetool/format/log_stap.py b/scripts/tracetool/format/log_stap.py
index 3e1186ae9c..0b6549d534 100644
--- a/scripts/tracetool/format/log_stap.py
+++ b/scripts/tracetool/format/log_stap.py
@@ -78,7 +78,12 @@ def c_fmt_to_stap(fmt):
elif state == STATE_LITERAL:
- fmt = re.sub("%(\d*)z(x|u|d)", "%\\1\\2", "".join(bits))
+ # All variables in systemtap are 64-bit in size
+ # The "%l" integer size qualifier is thus redundant
+ # and "%ll" is not valid at all. Similarly the size_t
+ # based "%z" size qualifier is not valid. We just
+ # strip all size qualifiers for sanity.
+ fmt = re.sub("%(\d*)(l+|z)(x|u|d)", "%\\1\\3", "".join(bits))
return fmt
def generate(events, backend, group):