Alexei Starovoitov 52d29b4783 bpf: Unbreak BPF_PROG_TYPE_KPROBE when kprobe is called via do_int3 ...

[ Upstream commit 548f1191d8 ]

The commit 0d00449c7a ("x86: Replace ist_enter() with nmi_enter()")
converted do_int3 handler to be "NMI-like".
That made old if (in_nmi()) check abort execution of bpf programs
attached to kprobe when kprobe is firing via int3
(For example when kprobe is placed in the middle of the function).
Remove the check to restore user visible behavior.

Fixes: 0d00449c7a ("x86: Replace ist_enter() with nmi_enter()")
Reported-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/bpf/20210203070636.70926-1-alexei.starovoitov@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-02-17 11:02:25 +01:00

..

blktrace.c

block: add a bdget_part helper

2020-10-05 10:38:33 -06:00

bpf_trace.c

bpf: Unbreak BPF_PROG_TYPE_KPROBE when kprobe is called via do_int3

2021-02-17 11:02:25 +01:00

bpf_trace.h

…

fgraph.c

fgraph: Initialize tracing_graph_pause at task creation

2021-02-10 09:29:16 +01:00

ftrace_internal.h

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ftrace.c

ftrace: Fix updating FTRACE_FL_TRAMP

2020-11-30 21:43:07 -05:00

Kconfig

tracing/kprobes: Do the notrace functions check without kprobes on ftrace

2021-01-19 18:27:19 +01:00

kprobe_event_gen_test.c

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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

Revert: "ring-buffer: Remove HAVE_64BIT_ALIGNED_ACCESS"

2020-12-30 11:54:29 +01:00

rpm-traces.c

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synth_event_gen_test.c

tracing: Add support for dynamic strings to synthetic events

2020-10-05 19:32:18 -04:00

trace_benchmark.c

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trace_benchmark.h

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trace_boot.c

tracing: Disable ftrace selftests when any tracer is running

2020-12-30 11:54:28 +01:00

trace_branch.c

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trace_clock.c

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trace_dynevent.c

tracing: Delete repeated words in comments

2020-09-21 21:06:02 -04:00

trace_dynevent.h

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trace_entries.h

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trace_event_perf.c

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trace_events_filter_test.h

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trace_events_filter.c

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trace_events_hist.c

tracing: Check return value of __create_val_fields() before using its result

2020-10-15 12:00:59 -04:00

trace_events_inject.c

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trace_events_synth.c

tracing: Make -ENOMEM the default error for parse_synth_field()

2020-11-02 15:58:32 -05:00

trace_events_trigger.c

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trace_events.c

tracing: Do not count ftrace events in top level enable output

2021-02-17 11:02:20 +01:00

trace_export.c

treewide: Convert macro and uses of __section(foo) to __section("foo")

2020-10-25 14:51:49 -07:00

trace_functions_graph.c

tracing: make tracing_init_dentry() returns an integer instead of a d_entry pointer

2020-09-18 22:17:14 -04:00

trace_functions.c

tracing: Enable creating new instance early boot

2020-09-21 21:06:04 -04:00

trace_hwlat.c

tracing: Remove WARN_ON in start_thread()

2020-11-30 21:43:07 -05:00

trace_irqsoff.c

tracing: Use pause-on-trace with the latency tracers

2021-02-10 09:29:16 +01:00

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: Fix to support kretprobe events on unloaded modules

2021-02-10 09:29:16 +01:00

trace_mmiotrace.c

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trace_nop.c

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trace_output.c

tracing: Make the space reserved for the pid wider

2020-09-18 12:42:11 -04:00

trace_output.h

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trace_preemptirq.c

lockdep: fix order in trace_hardirqs_off_caller()

2020-09-14 10:08:07 +02:00

trace_printk.c

Merge tag 'trace-v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2020-10-15 15:51:28 -07:00

trace_probe_tmpl.h

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trace_probe.c

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trace_probe.h

tracing: Move is_good_name() from trace_probe.h to trace.h

2020-10-15 12:01:13 -04:00

trace_sched_switch.c

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trace_sched_wakeup.c

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trace_selftest_dynamic.c

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trace_selftest.c

tracing: Disable ftrace selftests when any tracer is running

2020-12-30 11:54:28 +01:00

trace_seq.c

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trace_stack.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.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

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trace_synth.h

tracing: Add support for dynamic strings to synthetic events

2020-10-05 19:32:18 -04:00

trace_syscalls.c

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trace_uprobe.c

tracing/uprobes: Support perf-style return probe

2020-09-21 21:06:03 -04:00

trace.c

tracing: Check length before giving out the filter buffer

2021-02-17 11:02:21 +01:00

trace.h

tracing: Disable ftrace selftests when any tracer is running

2020-12-30 11:54:28 +01:00

tracing_map.c

tracing: Delete repeated words in comments

2020-09-21 21:06:02 -04:00

tracing_map.h

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