From 9f4e519fd7acbdb027d22e13e4f1cd8e79969dec Mon Sep 17 00:00:00 2001 From: Laurent Vivier Date: Tue, 5 Jan 2021 20:17:21 +0100 Subject: tracetool: fix "PRI" macro decoding MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit macro is not reset after use, so the format decoded is always the one of the first "PRI" in the format string. For instance: vhost_vdpa_set_config(void *dev, uint32_t offset, uint32_t size, \ uint32_t flags) "dev: %p offset: %"PRIu32" \ size: %"PRIu32" flags: 0x%"PRIx32 generates: printf("%d@%d vhost_vdpa_set_config dev: %p offset: %u size: %u \ flags: 0x%u\n", pid(), gettimeofday_ns(), dev, offset, \ size, flags) for the "flags" parameter, we can see a "0x%u" rather than a "0x%x" because the first macro was "PRIu32" (for offset). In the loop, macro becomes "PRIu32PRIu32PRIx32", and c_macro_to_format() returns always macro[3] ('u' in this case). This patch resets macro after the format has been decoded. Signed-off-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Daniel P. Berrangé Message-id: 20210105191721.120463-3-lvivier@redhat.com Signed-off-by: Stefan Hajnoczi --- scripts/tracetool/format/log_stap.py | 1 + 1 file changed, 1 insertion(+) (limited to 'scripts/tracetool/format/log_stap.py') diff --git a/scripts/tracetool/format/log_stap.py b/scripts/tracetool/format/log_stap.py index b486beb672..3e1186ae9c 100644 --- a/scripts/tracetool/format/log_stap.py +++ b/scripts/tracetool/format/log_stap.py @@ -54,6 +54,7 @@ def c_fmt_to_stap(fmt): else: if state == STATE_MACRO: bits.append(c_macro_to_format(macro)) + macro = "" state = STATE_LITERAL elif fmt[i] == ' ' or fmt[i] == '\t': if state == STATE_MACRO: -- cgit v1.2.3 From 09612de7e9adbe9666a8fa4cc60bab0a29a68ed1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Date: Wed, 6 Jan 2021 13:02:39 +0000 Subject: tracetool: also strip %l and %ll from systemtap format strings MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Laurent Vivier Reviewed-by: Philippe Mathieu-Daudé Tested-by: Laurent Vivier Message-id: 20210106130239.1004729-1-berrange@redhat.com [Fixed "simiarly" typo found by Laurent Vivier --Stefan] Signed-off-by: Stefan Hajnoczi --- scripts/tracetool/format/log_stap.py | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'scripts/tracetool/format/log_stap.py') 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: bits.append(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): -- cgit v1.2.3