Sebastian Andrzej Siewior b18cc3de00 tracing/rb: Init the CPU mask on allocation ...

Before commit b32614c034 ("tracing/rb: Convert to hotplug state machine")
the allocated cpumask was initialized to the mask of online or possible
CPUs. After the CPU hotplug changes the buffer initialization moved to
trace_rb_cpu_prepare() but the cpumask is allocated with alloc_cpumask()
and therefor has random content. As a consequence the cpu buffers are not
initialized and a later access dereferences a NULL pointer.

Use zalloc_cpumask() instead so trace_rb_cpu_prepare() initializes the
buffers properly.

Fixes: b32614c034 ("tracing/rb: Convert to hotplug state machine")
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: rostedt@goodmis.org
Link: http://lkml.kernel.org/r/20161207133133.hzkcqfllxcdi3joz@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2016-12-07 14:36:21 +01:00

..

blktrace.c

block: Fix secure erase

2016-08-16 09:16:51 -06:00

bpf_trace.c

bpf: add BPF_CALL_x macros for declaring helpers

2016-09-09 19:36:04 -07:00

ftrace.c

ftrace: Access ret_stack->subtime only in the function profiler

2016-09-01 12:19:40 -04:00

Kconfig

Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2016-10-06 11:48:41 -07:00

Makefile

Disable the __builtin_return_address() warning globally after all

2016-10-12 10:23:41 -07:00

power-traces.c

…

ring_buffer_benchmark.c

…

ring_buffer.c

tracing/rb: Init the CPU mask on allocation

2016-12-07 14:36:21 +01:00

rpm-traces.c

…

trace_benchmark.c

…

trace_benchmark.h

…

trace_branch.c

…

trace_clock.c

…

trace_entries.h

tracing: Add NMI tracing in hwlat detector

2016-09-02 12:47:55 -04:00

trace_event_perf.c

…

trace_events_filter_test.h

…

trace_events_filter.c

…

trace_events_hist.c

tracing: Fix use-after-free in hist_register_trigger()

2016-08-02 15:16:30 -04:00

trace_events_trigger.c

tracing: Call traceoff trigger after event is recorded

2016-09-23 09:47:59 -04:00

trace_events.c

tracing: Show the preempt count of when the event was called

2016-06-20 09:54:21 -04:00

trace_export.c

…

trace_functions_graph.c

Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2016-10-06 11:48:41 -07:00

trace_functions.c

ftrace: Have set_ftrace_pid use the bitmap like events do

2016-06-20 09:54:19 -04:00

trace_hwlat.c

tracing: Add NMI tracing in hwlat detector

2016-09-02 12:47:55 -04:00

trace_irqsoff.c

…

trace_kdb.c

…

trace_kprobe.c

ftrace: kprobe: uprobe: Add x8/x16/x32/x64 for hexadecimal types

2016-08-23 15:38:09 -03:00

trace_mmiotrace.c

tracing: Expose CPU physical addresses (resource values) for PCI devices

2016-06-20 09:54:22 -04:00

trace_nop.c

…

trace_output.c

tracing: Add NMI tracing in hwlat detector

2016-09-02 12:47:55 -04:00

trace_output.h

…

trace_printk.c

…

trace_probe.c

ftrace: kprobe: uprobe: Show u8/u16/u32/u64 types in decimal

2016-08-23 17:06:38 -03:00

trace_probe.h

ftrace: kprobe: uprobe: Show u8/u16/u32/u64 types in decimal

2016-08-23 17:06:38 -03:00

trace_sched_switch.c

…

trace_sched_wakeup.c

…

trace_selftest_dynamic.c

…

trace_selftest.c

…

trace_seq.c

…

trace_stack.c

…

trace_stat.c

…

trace_stat.h

…

trace_syscalls.c

tracing/syscalls: fix multiline in error message text

2016-09-29 10:25:23 +02:00

trace_uprobe.c

Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2016-10-06 11:48:41 -07:00

trace.c

tracing/rb: Convert to hotplug state machine

2016-12-02 00:52:34 +01:00

trace.h

tracing: Have max_latency be defined for HWLAT_TRACER as well

2016-09-12 09:59:46 -04:00

tracing_map.c

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tracing_map.h

…