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

blktrace: no need to check return value of debugfs_create functions

2019-06-03 15:39:39 +02:00

bpf_trace.c

bpf: Make use of probe_user_write in probe write helper

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

fgraph.c

ftrace: Look up the address of return_to_handler() using helpers

2019-09-18 12:24:47 +10:00

ftrace_internal.h

treewide: Rename rcu_dereference_raw_notrace() to _check()

2019-08-01 14:16:21 -07:00

ftrace.c

ftrace: Avoid potential division by zero in function profiler

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

Kconfig

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2019-09-18 12:34:53 -07:00

Makefile

tracing: Add unified dynamic event framework

2018-12-08 20:54:09 -05:00

power-traces.c

…

preemptirq_delay_test.c

tracing: Use trace_clock_local() for looping in preemptirq_delay_test.c

2018-10-17 15:35:33 -04:00

ring_buffer_benchmark.c

tracing: Use CONFIG_PREEMPTION

2019-07-31 19:03:35 +02:00

ring_buffer.c

tracing: Do not create directories if lockdown is in affect

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

rpm-traces.c

…

trace_benchmark.c

rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()

2018-05-15 10:27:29 -07:00

trace_benchmark.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_branch.c

x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP

2019-04-03 11:02:24 +02:00

trace_clock.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

trace_dynevent.c

tracing: Add tracing_check_open_get_tr()

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

trace_dynevent.h

tracing/dynevent: Pass extra arguments to match operation

2019-08-31 12:19:38 -04:00

trace_entries.h

tracing: Change the function format to display function names by perf

2019-02-11 14:53:43 -05:00

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

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

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

tracing: Add trigger file for trace_markers tracefs/ftrace/print

2018-05-29 08:28:53 -04:00

trace_functions_graph.c

fgraph: Remove redundant ftrace_graph_notrace_addr() test

2019-07-30 21:50:03 -04:00

trace_functions.c

tracing: Update stack trace skipping for ORC unwinder

2018-01-23 15:57:00 -05:00

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

Merge tag 'trace-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2019-03-11 17:01:32 -07:00

trace_kdb.c

tracing: Silence GCC 9 array bounds warning

2019-05-25 23:04:30 -04:00

trace_kprobe_selftest.c

selftest/ftrace: Move kprobe selftest function to separate compile unit

2018-07-30 18:41:04 -04:00

trace_kprobe_selftest.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_kprobe.c

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

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

trace_mmiotrace.c

…

trace_nop.c

…

trace_output.c

tracing: Be more clever when dumping hex in __print_hex()

2019-09-17 11:21:28 -04:00

trace_output.h

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_preemptirq.c

kprobes: Prohibit probing on hardirq tracers

2019-02-13 08:16:40 +01:00

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

tracing/probe: Support user-space dereference

2019-05-25 23:04:42 -04:00

trace_probe.c

tracing/probe: Fix to check the difference of nr_args before adding probe

2019-09-28 17:07:53 -04:00

trace_probe.h

tracing/probe: Reject exactly same probe event

2019-09-19 11:09:16 -04:00

trace_sched_switch.c

…

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

ftrace: Mark function tracer test functions noinline/noclone

2018-01-23 15:57:29 -05:00

trace_selftest.c

function_graph: Have selftest also emulate tr->reset() as it did with tr->init()

2019-04-21 19:46:56 -04:00

trace_seq.c

tracing: Add SPDX License format tags to tracing files

2018-08-16 19:08:06 -04:00

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

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00

trace_syscalls.c

syscalls: Remove start and number from syscall_get_arguments() args

2019-04-05 09:26:43 -04:00

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

tracing: Fix SPDX format headers to use C++ style comments

2018-08-16 19:08:06 -04:00