Daniel Borkmann 600e909964 bpf: Make use of probe_user_write in probe write helper ...

commit eb1b668874 upstream.

Convert the bpf_probe_write_user() helper to probe_user_write() such that
writes are not attempted under KERNEL_DS anymore which is buggy as kernel
and user space pointers can have overlapping addresses. Also, given we have
the access_ok() check inside probe_user_write(), the helper doesn't need
to do it twice.

Fixes: 96ae522795 ("bpf: Add bpf_probe_write_user BPF helper to be called in tracers")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/841c461781874c07a0ee404a454c3bc0459eed30.1572649915.git.daniel@iogearbox.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2020-01-17 19:48:40 +01:00

..

blktrace.c

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bpf_trace.c

bpf: Make use of probe_user_write in probe write helper

2020-01-17 19:48:40 +01:00

fgraph.c

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ftrace_internal.h

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ftrace.c

ftrace: Avoid potential division by zero in function profiler

2020-01-09 10:20:01 +01:00

Kconfig

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Makefile

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power-traces.c

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preemptirq_delay_test.c

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ring_buffer_benchmark.c

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ring_buffer.c

tracing: Do not create directories if lockdown is in affect

2020-01-12 12:21:45 +01:00

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_dynevent.c

tracing: Add tracing_check_open_get_tr()

2019-10-12 20:44:07 -04:00

trace_dynevent.h

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trace_entries.h

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trace_event_perf.c

tracing: Fix race in perf_trace_buf initialization

2019-10-21 19:38:28 -04:00

trace_events_filter_test.h

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trace_events_filter.c

tracing: Avoid memory leak in process_system_preds()

2020-01-09 10:20:00 +01:00

trace_events_hist.c

tracing: Fix endianness bug in histogram trigger

2020-01-09 10:20:00 +01:00

trace_events_trigger.c

tracing: Add locked_down checks to the open calls of files created for tracefs

2019-10-12 20:48:06 -04:00

trace_events.c

tracing: Fix lock inversion in trace_event_enable_tgid_record()

2020-01-09 10:19:59 +01:00

trace_export.c

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trace_functions_graph.c

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trace_functions.c

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trace_hwlat.c

tracing/hwlat: Don't ignore outer-loop duration when calculating max_latency

2019-10-12 20:49:33 -04:00

trace_irqsoff.c

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trace_kdb.c

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trace_kprobe_selftest.c

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trace_kprobe_selftest.h

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trace_kprobe.c

tracing/kprobe: Check whether the non-suffixed symbol is notrace

2019-12-31 16:45:29 +01:00

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_preemptirq.c

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trace_printk.c

tracing: Add locked_down checks to the open calls of files created for tracefs

2019-10-12 20:48:06 -04:00

trace_probe_tmpl.h

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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

kernel/trace: Fix do not unregister tracepoints when register sched_migrate_task fail

2020-01-14 20:08:22 +01:00

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

tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined

2020-01-14 20:08:22 +01:00

trace_stat.c

tracing: Add locked_down checks to the open calls of files created for tracefs

2019-10-12 20:48:06 -04:00

trace_stat.h

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trace_syscalls.c

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trace_uprobe.c

tracing: Add locked_down checks to the open calls of files created for tracefs

2019-10-12 20:48:06 -04:00

trace.c

tracing: Do not create directories if lockdown is in affect

2020-01-12 12:21:45 +01:00

trace.h

tracing: Add tracing_check_open_get_tr()

2019-10-12 20:44:07 -04:00

tracing_map.c

tracing: Have the histogram compare functions convert to u64 first

2020-01-09 10:20:00 +01:00

tracing_map.h

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