Messages in this thread Patch in this message | | | From | Mark Rutland <> | Subject | [PATCH 2/3] tools lib traceevent: fix pointer-integer size mismatch | Date | Wed, 15 Jan 2014 10:44:07 +0000 |
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The scsi and cfg80211 plugins cast between unsigned long long and pointers, which is problematic for architectures where unsigned long long is wider than the native pointer size:
linux/tools/lib/traceevent/plugin_scsi.c: In function ‘process_scsi_trace_parse_cdb’: linux/tools/lib/traceevent/plugin_scsi.c:408:26: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] scsi_trace_parse_cdb(s, (unsigned char *) args[1], args[2]);
linux/tools/lib/traceevent/plugin_cfg80211.c: In function ‘process___le16_to_cpup’: linux/tools/lib/traceevent/plugin_cfg80211.c:11:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] uint16_t *val = (uint16_t *) args[0];
This patch adds an intermediate cast to unsigned long, silencing the warning.
Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Cc: Ingo Molnar <mingo@redhat.com> --- tools/lib/traceevent/plugin_cfg80211.c | 2 +- tools/lib/traceevent/plugin_scsi.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
I'm not sure about this one as I'm not certain I read all the sites input values for args could be generated. I'd appreciate if someone more familiar with traceevent plugins could verify this makes sense.
Mark.
diff --git a/tools/lib/traceevent/plugin_cfg80211.c b/tools/lib/traceevent/plugin_cfg80211.c index dcab8e8..57e9822 100644 --- a/tools/lib/traceevent/plugin_cfg80211.c +++ b/tools/lib/traceevent/plugin_cfg80211.c @@ -8,7 +8,7 @@ static unsigned long long process___le16_to_cpup(struct trace_seq *s, unsigned long long *args) { - uint16_t *val = (uint16_t *) args[0]; + uint16_t *val = (uint16_t *) (unsigned long) args[0]; return val ? (long long) le16toh(*val) : 0; } diff --git a/tools/lib/traceevent/plugin_scsi.c b/tools/lib/traceevent/plugin_scsi.c index 6fb8e3e..7ef16cc 100644 --- a/tools/lib/traceevent/plugin_scsi.c +++ b/tools/lib/traceevent/plugin_scsi.c @@ -405,7 +405,7 @@ scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len) unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s, unsigned long long *args) { - scsi_trace_parse_cdb(s, (unsigned char *) args[1], args[2]); + scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]); return 0; } -- 1.8.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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