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Fix: consumer snapshot: handle unsigned long overflow
[lttng-tools.git]
/
src
/
common
/
kernel-consumer
/
kernel-consumer.c
diff --git
a/src/common/kernel-consumer/kernel-consumer.c
b/src/common/kernel-consumer/kernel-consumer.c
index d82e07fcaacf147cf4d59d8e98119cc3adc326bf..d44ee6a7d67fd79bd613ed6502db5145ce46e35a 100644
(file)
--- a/
src/common/kernel-consumer/kernel-consumer.c
+++ b/
src/common/kernel-consumer/kernel-consumer.c
@@
-240,7
+240,7
@@
int lttng_kconsumer_snapshot_channel(uint64_t key, char *path,
produced_pos, nb_packets_per_stream,
stream->max_sb_size);
- while (
consumed_pos < produced_pos
) {
+ while (
(long) (consumed_pos - produced_pos) < 0
) {
ssize_t read_len;
unsigned long len, padded_len;
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