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Tetsuo Handa c5e3a41187 kernel: Initialize cpumask before parsing 
KMSAN complains that new_value at cpumask_parse_user() from
write_irq_affinity() from irq_affinity_proc_write() is uninitialized.

  [  148.133411][ T5509] =====================================================
  [  148.135383][ T5509] BUG: KMSAN: uninit-value in find_next_bit+0x325/0x340
  [  148.137819][ T5509]
  [  148.138448][ T5509] Local variable ----new_value.i@irq_affinity_proc_write created at:
  [  148.140768][ T5509]  irq_affinity_proc_write+0xc3/0x3d0
  [  148.142298][ T5509]  irq_affinity_proc_write+0xc3/0x3d0
  [  148.143823][ T5509] =====================================================

Since bitmap_parse() from cpumask_parse_user() calls find_next_bit(),
any alloc_cpumask_var() + cpumask_parse_user() sequence has possibility
that find_next_bit() accesses uninitialized cpu mask variable. Fix this
problem by replacing alloc_cpumask_var() with zalloc_cpumask_var().

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20210401055823.3929-1-penguin-kernel@I-love.SAKURA.ne.jp
2021-04-10 13:35:54 +02:00
..
blktrace.c
block-5.12-2021-02-27
2021-02-28 11:23:38 -08:00
bpf_trace.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2021-02-16 13:14:06 -08:00
bpf_trace.h
bpf: Use dedicated bpf_trace_printk event instead of trace_printk()
2020-07-13 16:55:49 -07:00
error_report-traces.c
tracing: add error_report_end trace point
2021-02-26 09:41:02 -08:00
fgraph.c
fgraph: Initialize tracing_graph_pause at task creation
2021-01-29 15:07:32 -05:00
ftrace_internal.h
x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up
2020-05-12 18:24:34 -04:00
ftrace.c
Tracing updates for 5.11
2020-12-17 13:22:17 -08:00
Kconfig
tracing: Fix help text of TRACEPOINT_BENCHMARK in Kconfig
2021-03-04 09:45:17 -05:00
kprobe_event_gen_test.c
tracing: Add kprobe event command generation test module
2020-01-30 09:46:28 -05:00
Makefile
tracing: add error_report_end trace point
2021-02-26 09:41:02 -08:00
power-traces.c
…
preemptirq_delay_test.c
kernel: trace: preemptirq_delay_test: add cpu affinity
2021-02-02 17:02:07 -05:00
ring_buffer_benchmark.c
sched,tracing: Convert to sched_set_fifo()
2020-07-29 11:43:53 +02:00
ring_buffer.c
ring-buffer: Add a little more information and a WARN when time stamp going backwards is detected
2021-03-04 09:45:17 -05:00
rpm-traces.c
…
synth_event_gen_test.c
tracing: Remove the useless value assignment in test_create_synth_event()
2020-11-13 12:19:52 -05:00
trace_benchmark.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_benchmark.h
…
trace_boot.c
tracing: Disable ftrace selftests when any tracer is running
2020-12-14 12:05:03 -05:00
trace_branch.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_clock.c
…
trace_dynevent.c
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_dynevent.h
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_entries.h
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_event_perf.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_events_filter_test.h
…
trace_events_filter.c
tracing: Clean up after filter logic rewriting
2020-11-16 12:32:34 -05:00
trace_events_hist.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_events_inject.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_events_synth.c
tracing: Fix memory leak in __create_synth_event()
2021-03-04 09:45:57 -05:00
trace_events_trigger.c
tracing: Fix event trigger to accept redundant spaces
2020-06-23 21:51:40 -04:00
trace_events.c
Tracing updates for 5.12
2021-02-22 14:07:15 -08:00
trace_export.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
trace_functions_graph.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_functions.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_hwlat.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_irqsoff.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_kdb.c
tracing: Rename trace_buffer to array_buffer
2020-01-13 13:19:38 -05:00
trace_kprobe_selftest.c
…
trace_kprobe_selftest.h
…
trace_kprobe.c
Modules updates for v5.12
2021-02-23 10:15:33 -08:00
trace_mmiotrace.c
tracing: Remove definition of DEBUG in trace_mmiotrace.c
2021-02-02 17:02:07 -05:00
trace_nop.c
…
trace_output.c
tracing: Show real address for trace event arguments
2021-02-11 16:31:57 -05:00
trace_output.h
ftrace: Add recording of functions that caused recursion
2020-11-06 08:42:26 -05:00
trace_preemptirq.c
lockdep: fix order in trace_hardirqs_off_caller()
2020-09-14 10:08:07 +02:00
trace_printk.c
Updates for tracing and bootconfig:
2020-10-15 15:51:28 -07:00
trace_probe_tmpl.h
…
trace_probe.c
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_probe.h
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace_recursion_record.c
ftrace: Add recording of functions that caused recursion
2020-11-06 08:42:26 -05:00
trace_sched_switch.c
tracing: Fix sched switch start/stop refcount racy updates
2020-01-30 09:46:10 -05:00
trace_sched_wakeup.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_selftest_dynamic.c
…
trace_selftest.c
tracing: Disable ftrace selftests when any tracer is running
2020-12-14 12:05:03 -05:00
trace_seq.c
tracing: Remove unused TRACE_SEQ_BUF_USED
2020-01-21 18:39:54 -05:00
trace_stack.c
ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs
2020-11-13 12:14:55 -05:00
trace_stat.c
tracing: make tracing_init_dentry() returns an integer instead of a d_entry pointer
2020-09-18 22:17:14 -04:00
trace_stat.h
tracing: Use generic type for comparator function
2019-11-14 13:15:11 -05:00
trace_synth.h
tracing: Add support for dynamic strings to synthetic events
2020-10-05 19:32:18 -04:00
trace_syscalls.c
tracing: Merge irqflags + preempt counter.
2021-02-02 17:02:06 -05:00
trace_uprobe.c
tracing/dynevent: Delegate parsing to create function
2021-02-09 12:52:15 -05:00
trace.c
kernel: Initialize cpumask before parsing
2021-04-10 13:35:54 +02:00
trace.h
tracing: Remove duplicate declaration from trace.h
2021-03-04 09:44:47 -05:00
tracing_map.c
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00
tracing_map.h
tracing: Fix some typos in comments
2020-11-10 20:39:40 -05:00