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[5.4,109/475] perf/core: Fix address filter parser for multiple filters

Message ID 20220414110858.203700839@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH April 14, 2022, 1:08 p.m. UTC 
From: Adrian Hunter <adrian.hunter@intel.com>

[ Upstream commit d680ff24e9e14444c63945b43a37ede7cd6958f9 ]

Reset appropriate variables in the parser loop between parsing separate
filters, so that they do not interfere with parsing the next filter.

Fixes: 375637bc524952 ("perf/core: Introduce address range filtering")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220131072453.2839535-4-adrian.hunter@intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/events/core.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/kernel/events/core.c b/kernel/events/core.c
index f720a40ccaf5..52f4a9e46704 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9490,8 +9490,11 @@  perf_event_parse_addr_filter(struct perf_event *event, char *fstr,
 			}
 
 			/* ready to consume more filters */
+			kfree(filename);
+			filename = NULL;
 			state = IF_STATE_ACTION;
 			filter = NULL;
+			kernel = 0;
 		}
 	}