Steven Rostedt (Red Hat) e6711e36bb tracing: Move mutex to protect against resetting of seq data ...

commit 1245800c0f 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>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

2016-11-20 01:01:42 +00:00

..

blktrace.c

blktrace: fix accounting of partially completed requests

2014-04-30 16:23:20 +01:00

ftrace.c

ftrace: Fix ftrace enable ordering of sysctl ftrace_enabled

2015-05-09 23:16:27 +01:00

Kconfig

ftrace: Update the kconfig for DYNAMIC_FTRACE

2013-03-20 15:03:28 +00:00

Makefile

…

power-traces.c

…

ring_buffer_benchmark.c

ring-buffer-benchmark: Fix the wrong sched_priority of producer

2015-08-07 00:32:15 +01:00

ring_buffer.c

ring-buffer: Update read stamp with first real commit on page

2015-12-30 02:25:58 +00:00

rpm-traces.c

…

trace_branch.c

…

trace_clock.c

…

trace_entries.h

…

trace_event_perf.c

…

trace_events_filter_test.h

…

trace_events_filter.c

tracing/filter: Do not allow infix to exceed end of string

2015-08-12 16:33:17 +02:00

trace_events.c

tracing: Do not add event files for modules that fail tracepoints

2014-04-02 00:58:57 +01:00

trace_export.c

…

trace_functions_graph.c

…

trace_functions.c

…

trace_irqsoff.c

tracing: Have preempt(irqs)off trace preempt disabled functions

2016-05-01 00:05:20 +02:00

trace_kdb.c

…

trace_kprobe.c

…

trace_mmiotrace.c

…

trace_nop.c

…

trace_output.c

…

trace_output.h

…

trace_printk.c

…

trace_sched_switch.c

…

trace_sched_wakeup.c

tracing: Prevent buffer overwrite disabled for latency tracers

2013-03-27 02:41:15 +00:00

trace_selftest_dynamic.c

…

trace_selftest.c

tracing: Fix ftrace_dump()

2013-05-13 15:02:11 +01:00

trace_stack.c

tracing: Check return value of tracing_init_dentry()

2013-05-13 15:02:17 +01:00

trace_stat.c

tracing: Check return value of tracing_init_dentry()

2013-05-13 15:02:17 +01:00

trace_stat.h

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trace_syscalls.c

tracing/syscalls: Ignore numbers outside NR_syscalls' range

2014-12-14 16:23:53 +00:00

trace_workqueue.c

…

trace.c

tracing: Move mutex to protect against resetting of seq data

2016-11-20 01:01:42 +00:00

trace.h

tracing: Prevent buffer overwrite disabled for latency tracers

2013-03-27 02:41:15 +00:00