https://github.com/torvalds/linux
Revision 91862cc7867bba4ee5c8fcf0ca2f1d30427b6129 authored by Wenwen Wang on 20 April 2019, 02:22:59 UTC, committed by Steven Rostedt (VMware) on 26 April 2019, 15:45:03 UTC
In trace_pid_write(), the buffer for trace parser is allocated through
kmalloc() in trace_parser_get_init(). Later on, after the buffer is used,
it is then freed through kfree() in trace_parser_put(). However, it is
possible that trace_pid_write() is terminated due to unexpected errors,
e.g., ENOMEM. In that case, the allocated buffer will not be freed, which
is a memory leak bug.
To fix this issue, free the allocated buffer when an error is encountered.
Link: http://lkml.kernel.org/r/1555726979-15633-1-git-send-email-wang6495@umn.edu
Fixes: f4d34a87e9c10 ("tracing: Use pid bitmap instead of a pid array for set_event_pid")
Cc: stable@vger.kernel.org
Signed-off-by: Wenwen Wang <wang6495@umn.edu>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
1 parent b987222
Tip revision: 91862cc7867bba4ee5c8fcf0ca2f1d30427b6129 authored by Wenwen Wang on 20 April 2019, 02:22:59 UTC
tracing: Fix a memory leak by early error exit in trace_pid_write()
tracing: Fix a memory leak by early error exit in trace_pid_write()
Tip revision: 91862cc
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| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
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| COPYING | -rw-r--r-- | 423 bytes |
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| Kbuild | -rw-r--r-- | 1.5 KB |
| Kconfig | -rw-r--r-- | 563 bytes |
| MAINTAINERS | -rw-r--r-- | 491.0 KB |
| Makefile | -rw-r--r-- | 58.3 KB |
| README | -rw-r--r-- | 727 bytes |
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