| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 25 Nov 2019 14:53:30 -0500
From: Steven Rostedt <rostedt@...dmis.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [GIT PULL] tracing: Updates for 5.5
Linus,
A couple of known conflicts with linux-next:
One with arch64 that both updated vmlinux.lds.h and the conflict
resolution is here:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git ftrace/aarch64-conflict
And the other is a trivial conflict with livepatching in the
selftest Makefile. I think Stephen reported some other minor ones too.
New tracing features:
- PERAMAENT flag to ftrace_ops when attaching a callback to a function
As /proc/sys/kernel/ftrace_enabled when set to zero will disable all
attached callbacks in ftrace, this has a detrimental impact on live
kernel tracing, as it disables all that it patched. If a ftrace_ops
is registered to ftrace with the PERMANENT flag set, it will prevent
ftrace_enabled from being disabled, and if ftrace_enabled is already
disabled, it will prevent a ftrace_ops with PREMANENT flag set from
being registered.
- New register_ftrace_direct(). As eBPF would like to register its own
trampolines to be called by the ftrace nop locations directly,
without going through the ftrace trampoline, this function has been
added. This allows for eBPF trampolines to live along side of
ftrace, perf, kprobe and live patching. It also utilizes the ftrace
enabled_functions file that keeps track of functions that have been
modified in the kernel, to allow for security auditing.
- Allow for kernel internal use of ftrace instances. Subsystems in
the kernel can now create and destroy their own tracing instances
which allows them to have their own tracing buffer, and be able
to record events without worrying about other users from writing over
their data.
- New seq_buf_hex_dump() that lets users use the hex_dump() in their
seq_buf usage.
- Notifications now added to tracing_max_latency to allow user space
to know when a new max latency is hit by one of the latency tracers.
- Wider spread use of generic compare operations for use of bsearch and
friends.
- More synthetic event fields may be defined (32 up from 16)
- Use of xarray for architectures with sparse system calls, for the
system call trace events.
This along with small clean ups and fixes.
Please pull the latest trace-v5.5 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-v5.5
Tag SHA1: e1b5446490496ec6b12aa207c5aaa83f94f6f44a
Head SHA1: 16c0f03f629a89e6a1249497202b2c154ff46206
Alexei Starovoitov (1):
ftrace: Return ENOTSUPP when DYNAMIC_FTRACE_WITH_DIRECT_CALLS is not configured
Andy Shevchenko (3):
lib/sort: Move swap, cmp and cmp_r function types for wider use
lib/bsearch: Use generic type for comparator function
tracing: Use generic type for comparator function
Artem Bityutskiy (1):
tracing: Increase SYNTH_FIELDS_MAX for synthetic_events
Ben Dooks (1):
tracing: Make internal ftrace events static
Borislav Petkov (1):
tracing: Remove stray tab in TRACE_EVAL_MAP_FILE's help text
Colin Ian King (1):
ftrace/selftests: Fix spelling mistake "wakeing" -> "waking"
Divya Indi (5):
tracing: Declare newly exported APIs in include/linux/trace.h
tracing: Verify if trace array exists before destroying it.
tracing: Adding NULL checks for trace_array descriptor pointer
tracing: Adding new functions for kernel access to Ftrace instances
tracing: Sample module to demonstrate kernel access to Ftrace instances.
Enrico Weigelt, metux IT consult (1):
ftrace: Use BIT() macro
Hassan Naveed (2):
tracing: Use xarray for syscall trace events
tracing: Enable syscall optimization for MIPS
Joe Lawrence (2):
selftests/livepatch: Make dynamic debug setup and restore generic
selftests/livepatch: Test interaction with ftrace_enabled
Josh Poimboeuf (1):
ftrace/x86: Tell objtool to ignore nondeterministic ftrace stack layout
Krzysztof Kozlowski (1):
tracing: Fix Kconfig indentation
Masami Hiramatsu (1):
tracing/kprobe: Check whether the non-suffixed symbol is notrace
Miroslav Benes (1):
ftrace: Introduce PERMANENT ftrace_ops flag
Piotr Maziarz (2):
seq_buf: Add printing formatted hex dumps
tracing: Use seq_buf_hex_dump() to dump buffers
Sebastian Andrzej Siewior (1):
tracing: Use CONFIG_PREEMPTION
Srivatsa S. Bhat (VMware) (1):
tracing/hwlat: Fix a few trivial nits
Steven Rostedt (VMware) (21):
ftrace: Separate out the copying of a ftrace_hash from __ftrace_hash_move()
ftrace: Separate out functionality from ftrace_location_range()
ftrace: Add register_ftrace_direct()
ftrace: Add ftrace_find_direct_func()
ftrace: Add sample module that uses register_ftrace_direct()
ftrace/selftest: Add tests to test register_ftrace_direct()
ftrace: Add another example of register_ftrace_direct() use case
ftrace/selftests: Update the direct call selftests to test two direct calls
ftrace/x86: Add register_ftrace_direct() for custom trampolines
ftrace/x86: Add a counter to test function_graph with direct
ftrace: Add information on number of page groups allocated
fgraph: Fix function type mismatches of ftrace_graph_return using ftrace_stub
tracing/selftests: Turn off timeout setting
tracing: Add missing "inline" in stub function of latency_fsnotify()
ftrace: Add modify_ftrace_direct()
ftrace/samples: Add a sample module that implements modify_ftrace_direct()
ftrace: Fix accounting bug with direct->count in register_ftrace_direct()
ftrace: Add another check for match in register_ftrace_direct()
ftrace: Add helper find_direct_entry() to consolidate code
ftrace: Add a helper function to modify_ftrace_direct() to allow arch optimization
ftrace: Rename ftrace_graph_stub to ftrace_stub_graph
Viktor Rosendahl (BMW) (2):
ftrace: Implement fs notification for tracing_max_latency
preemptirq_delay_test: Add the burst feature and a sysfs trigger
Xianting Tian (1):
ring-buffer: Fix typos in function ring_buffer_producer
Yuming Han (1):
tracing: use kvcalloc for tgid_map array allocation
----
Documentation/trace/ftrace-uses.rst | 10 +-
Documentation/trace/ftrace.rst | 4 +-
arch/Kconfig | 8 +
arch/mips/Kconfig | 1 +
arch/sh/boot/compressed/misc.c | 5 +
arch/x86/Kconfig | 1 +
arch/x86/include/asm/ftrace.h | 13 +
arch/x86/include/asm/unwind_hints.h | 8 +
arch/x86/kernel/ftrace.c | 14 +
arch/x86/kernel/ftrace_64.S | 42 +-
include/asm-generic/vmlinux.lds.h | 17 +-
include/linux/bsearch.h | 2 +-
include/linux/ftrace.h | 112 +++-
include/linux/seq_buf.h | 3 +
include/linux/sort.h | 8 +-
include/linux/trace.h | 8 +
include/linux/trace_events.h | 8 +-
include/linux/trace_seq.h | 4 +
include/linux/types.h | 5 +
include/trace/trace_events.h | 6 +
kernel/livepatch/patch.c | 3 +-
kernel/module.c | 6 +-
kernel/trace/Kconfig | 26 +-
kernel/trace/fgraph.c | 11 +-
kernel/trace/ftrace.c | 613 +++++++++++++++++++--
kernel/trace/preemptirq_delay_test.c | 144 ++++-
kernel/trace/ring_buffer_benchmark.c | 4 +-
kernel/trace/trace.c | 214 +++++--
kernel/trace/trace.h | 25 +-
kernel/trace/trace_branch.c | 8 +-
kernel/trace/trace_events.c | 29 +-
kernel/trace/trace_events_hist.c | 2 +-
kernel/trace/trace_export.c | 4 +-
kernel/trace/trace_hwlat.c | 15 +-
kernel/trace/trace_kprobe.c | 27 +-
kernel/trace/trace_output.c | 15 +
kernel/trace/trace_seq.c | 30 +
kernel/trace/trace_stat.c | 6 +-
kernel/trace/trace_stat.h | 2 +-
kernel/trace/trace_syscalls.c | 32 +-
lib/bsearch.c | 2 +-
lib/seq_buf.c | 62 +++
lib/sort.c | 15 +-
samples/Kconfig | 15 +
samples/Makefile | 2 +
samples/ftrace/Makefile | 8 +
samples/ftrace/ftrace-direct-modify.c | 88 +++
samples/ftrace/ftrace-direct-too.c | 51 ++
samples/ftrace/ftrace-direct.c | 45 ++
samples/ftrace/sample-trace-array.c | 131 +++++
samples/ftrace/sample-trace-array.h | 84 +++
tools/testing/selftests/ftrace/settings | 1 +
.../ftrace/test.d/direct/ftrace-direct.tc | 69 +++
.../ftrace/test.d/direct/kprobe-direct.tc | 84 +++
tools/testing/selftests/livepatch/Makefile | 3 +-
tools/testing/selftests/livepatch/functions.sh | 34 +-
.../testing/selftests/livepatch/test-callbacks.sh | 2 +-
tools/testing/selftests/livepatch/test-ftrace.sh | 65 +++
.../testing/selftests/livepatch/test-livepatch.sh | 2 +-
.../selftests/livepatch/test-shadow-vars.sh | 2 +-
60 files changed, 2054 insertions(+), 206 deletions(-)
create mode 100644 samples/ftrace/Makefile
create mode 100644 samples/ftrace/ftrace-direct-modify.c
create mode 100644 samples/ftrace/ftrace-direct-too.c
create mode 100644 samples/ftrace/ftrace-direct.c
create mode 100644 samples/ftrace/sample-trace-array.c
create mode 100644 samples/ftrace/sample-trace-array.h
create mode 100644 tools/testing/selftests/ftrace/settings
create mode 100644 tools/testing/selftests/ftrace/test.d/direct/ftrace-direct.tc
create mode 100644 tools/testing/selftests/ftrace/test.d/direct/kprobe-direct.tc
create mode 100755 tools/testing/selftests/livepatch/test-ftrace.sh
---------------------------
Powered by blists - more mailing lists