Jann Horn 24d5097655 tracing/perf: Use strndup_user() instead of buggy open-coded version ...

commit 83540fbc88 upstream.

The first version of this method was missing the check for
`ret == PATH_MAX`; then such a check was added, but it didn't call kfree()
on error, so there was still a small memory leak in the error case.
Fix it by using strndup_user() instead of open-coding it.

Link: http://lkml.kernel.org/r/20190220165443.152385-1-jannh@google.com

Cc: Ingo Molnar <mingo@kernel.org>
Cc: stable@vger.kernel.org
Fixes: 0eadcc7a7b ("perf/core: Fix perf_uprobe_init()")
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-03-23 20:09:56 +01:00

..

blktrace.c

Merge tag 'for-4.19/post-20180822' of git://git.kernel.dk/linux-block

2018-08-22 13:38:05 -07:00

bpf_trace.c

bpf: fix potential deadlock in bpf_prog_register

2019-03-13 14:02:36 -07:00

ftrace.c

tracing: Fix memory leak of instance function hash filters

2018-12-19 19:19:52 +01:00

Kconfig

Merge tag 'trace-v4.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2018-08-23 13:07:00 -07:00

Makefile

tracing: Allow gcov profiling on only ftrace subsystem

2018-08-21 09:11:49 -04:00

power-traces.c

…

preemptirq_delay_test.c

tracing: Use trace_clock_local() for looping in preemptirq_delay_test.c

2018-10-17 15:35:33 -04:00

ring_buffer_benchmark.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

ring_buffer.c

ring-buffer: Allow for rescheduling when removing pages

2018-09-17 18:15:11 -04:00

rpm-traces.c

…

trace_benchmark.c

…

trace_benchmark.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_branch.c

…

trace_clock.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_entries.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_event_perf.c

tracing/perf: Use strndup_user() instead of buggy open-coded version

2019-03-23 20:09:56 +01:00

trace_events_filter_test.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_events_filter.c

tracing: Fix event filters and triggers to handle negative numbers

2019-03-10 07:17:20 +01:00

trace_events_hist.c

tracing: Use strncpy instead of memcpy for string keys in hist triggers

2019-03-23 20:09:56 +01:00

trace_events_trigger.c

tracing: Fix memory leak in set_trigger_filter()

2018-12-19 19:19:52 +01:00

trace_events.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_export.c

…

trace_functions_graph.c

tracing/fgraph: Fix set_graph_function from showing interrupts

2018-12-08 12:59:07 +01:00

trace_functions.c

…

trace_hwlat.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_irqsoff.c

tracing/fgraph: Fix set_graph_function from showing interrupts

2018-12-08 12:59:07 +01:00

trace_kdb.c

…

trace_kprobe_selftest.c

selftest/ftrace: Move kprobe selftest function to separate compile unit

2018-07-30 18:41:04 -04:00

trace_kprobe_selftest.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_kprobe.c

tracing/kprobes: Check the probe on unloaded module correctly

2018-11-21 09:19:09 +01:00

trace_mmiotrace.c

…

trace_nop.c

…

trace_output.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_output.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_preemptirq.c

tracing: More reverting of "tracing: Centralize preemptirq tracepoints and unify their usage"

2018-08-10 15:12:00 -04:00

trace_printk.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_probe.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_probe.h

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_sched_switch.c

…

trace_sched_wakeup.c

tracing/fgraph: Fix set_graph_function from showing interrupts

2018-12-08 12:59:07 +01:00

trace_selftest_dynamic.c

…

trace_selftest.c

…

trace_seq.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_stack.c

…

trace_stat.c

…

trace_stat.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_syscalls.c

…

trace_uprobe.c

tracing/uprobes: Fix output for multiple string arguments

2019-02-20 10:25:48 +01:00

trace.c

tracing: Do not free iter->trace in fail path of tracing_open_pipe()

2019-03-23 20:09:56 +01:00

trace.h

tracing/fgraph: Fix set_graph_function from showing interrupts

2018-12-08 12:59:07 +01:00

tracing_map.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

tracing_map.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00