a3ec7ba0db
Below race can come, if trace_open and resize of cpu buffer is running parallely on different cpus CPUX CPUY ring_buffer_resize atomic_read(&buffer->resize_disabled) tracing_open tracing_reset_online_cpus ring_buffer_reset_cpu rb_reset_cpu rb_update_pages remove/insert pages resetting pointer This race can cause data abort or some times infine loop in rb_remove_pages and rb_insert_pages while checking pages for sanity. Take ring buffer lock in rb reset to avoid resetting of cpu buffer. Change-Id: I1d3344cca99e936d4e04a0e430e0ef9a975404c8 Signed-off-by: Gaurav Kohli <gkohli@codeaurora.org> |
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.. | ||
blktrace.c | ||
bpf_trace.c | ||
ftrace.c | ||
ipc_logging.c | ||
ipc_logging_debug.c | ||
ipc_logging_private.h | ||
Kconfig | ||
Makefile | ||
msm_rtb.c | ||
power-traces.c | ||
preemptirq_delay_test.c | ||
ring_buffer.c | ||
ring_buffer_benchmark.c | ||
rpm-traces.c | ||
trace.c | ||
trace.h | ||
trace_benchmark.c | ||
trace_benchmark.h | ||
trace_branch.c | ||
trace_clock.c | ||
trace_entries.h | ||
trace_event_perf.c | ||
trace_events.c | ||
trace_events_filter.c | ||
trace_events_filter_test.h | ||
trace_events_hist.c | ||
trace_events_trigger.c | ||
trace_export.c | ||
trace_functions.c | ||
trace_functions_graph.c | ||
trace_hwlat.c | ||
trace_irqsoff.c | ||
trace_kdb.c | ||
trace_kprobe.c | ||
trace_kprobe_selftest.c | ||
trace_kprobe_selftest.h | ||
trace_mmiotrace.c | ||
trace_nop.c | ||
trace_output.c | ||
trace_output.h | ||
trace_preemptirq.c | ||
trace_printk.c | ||
trace_probe.c | ||
trace_probe.h | ||
trace_sched_switch.c | ||
trace_sched_wakeup.c | ||
trace_selftest.c | ||
trace_selftest_dynamic.c | ||
trace_seq.c | ||
trace_stack.c | ||
trace_stat.c | ||
trace_stat.h | ||
trace_syscalls.c | ||
trace_uprobe.c | ||
tracing_map.c | ||
tracing_map.h |