Steven Rostedt (Red Hat) 8b275b4522 tracing: Move mutex to protect against resetting of seq data ...

commit 1245800c0f96eb6ebb368593e251d66c01e61022 upstream.

The iter->seq can be reset outside the protection of the mutex. So can
reading of user data. Move the mutex up to the beginning of the function.

Fixes: d7350c3f45 ("tracing/core: make the read callbacks reentrants")
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2016-09-30 10:18:38 +02:00

..

blktrace.c

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bpf_trace.c

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ftrace.c

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Kconfig

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Makefile

Makefile: Mute warning for __builtin_return_address(>0) for tracing only

2016-09-30 10:18:35 +02:00

power-traces.c

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ring_buffer_benchmark.c

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ring_buffer.c

ring-buffer: Prevent overflow of size in ring_buffer_resize()

2016-06-01 12:15:49 -07:00

rpm-traces.c

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trace_benchmark.c

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trace_benchmark.h

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trace_branch.c

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trace_clock.c

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trace_entries.h

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trace_event_perf.c

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trace_events_filter_test.h

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trace_events_filter.c

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trace_events_trigger.c

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trace_events.c

tracing: Don't display trigger file for events that can't be enabled

2016-05-11 11:21:13 +02:00

trace_export.c

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trace_functions_graph.c

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trace_functions.c

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trace_irqsoff.c

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trace_kdb.c

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trace_kprobe.c

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trace_mmiotrace.c

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trace_nop.c

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trace_output.c

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trace_output.h

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trace_printk.c

tracing: Handle NULL formats in hold_module_trace_bprintk_format()

2016-07-27 09:47:32 -07:00

trace_probe.c

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trace_probe.h

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trace_sched_switch.c

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trace_sched_wakeup.c

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trace_selftest_dynamic.c

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trace_selftest.c

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trace_seq.c

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trace_stack.c

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trace_stat.c

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trace_stat.h

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trace_syscalls.c

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trace_uprobe.c

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trace.c

tracing: Move mutex to protect against resetting of seq data

2016-09-30 10:18:38 +02:00

trace.h

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