Masami Hiramatsu (Google) 44ec3b6a27 tracing/trigger: Fix to return error if failed to alloc snapshot ...

commit 0958b33ef5a04ed91f61cef4760ac412080c4e08 upstream.

Fix register_snapshot_trigger() to return error code if it failed to
allocate a snapshot instead of 0 (success). Unless that, it will register
snapshot trigger without an error.

Link: https://lore.kernel.org/linux-trace-kernel/170622977792.270660.2789298642759362200.stgit@devnote2

Fixes: 0bbe7f719985 ("tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation")
Cc: stable@vger.kernel.org
Cc: Vincent Donnefort <vdonnefort@google.com>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit bcf4a115a5068f3331fafb8c176c1af0da3d8b19)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>

2024-03-08 08:21:38 +00:00

..

blktrace.c

blktrace: Fix output non-blktrace event when blk_classic option enabled

2023-01-18 09:26:18 +01:00

bpf_trace.c

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ftrace.c

ftrace: Fix invalid address access in lookup_rec() when index is 0

2023-03-22 13:26:16 +01:00

Kconfig

Stop the ad-hoc games with -Wno-maybe-initialized

2020-05-20 08:17:10 +02:00

Makefile

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power-traces.c

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ring_buffer_benchmark.c

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ring_buffer.c

ring-buffer: Do not record in NMI if the arch does not support cmpxchg in NMI

2024-02-02 11:33:36 +00:00

rpm-traces.c

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trace_benchmark.c

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trace_benchmark.h

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trace_branch.c

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

2019-07-03 13:15:57 +02:00

trace_clock.c

tracing: Do no increment trace_clock_global() by one

2021-06-30 08:48:53 -04:00

trace_entries.h

tracing: Set kernel_stack's caller size properly

2020-10-01 13:12:32 +02:00

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: Do not reference char * as a string in histograms

2021-07-20 16:17:48 +02:00

trace_events_trigger.c

tracing/trigger: Fix to return error if failed to alloc snapshot

2024-03-08 08:21:38 +00:00

trace_events.c

tracing: relax trace_event_eval_update() execution with cond_resched()

2023-10-25 11:13:32 +02:00

trace_export.c

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trace_functions_graph.c

tracing/fgraph: Fix set_graph_function from showing interrupts

2019-05-16 19:42:27 +02:00

trace_functions.c

tracing: Have all levels of checks prevent recursion

2021-10-27 09:51:41 +02:00

trace_hwlat.c

tracing/hwlat: Honor the tracing_cpumask

2020-08-21 09:48:19 +02:00

trace_irqsoff.c

tracing: Fix memleak due to race between current_tracer and trace

2023-08-30 16:35:14 +02:00

trace_kdb.c

tracing: Silence GCC 9 array bounds warning

2019-06-25 11:36:50 +08:00

trace_kprobe.c

ftrace/kprobe: Show the maxactive number on kprobe_events

2020-04-24 08:00:50 +02:00

trace_mmiotrace.c

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trace_nop.c

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trace_output.c

tracing: Add size check when printing trace_marker output

2024-02-02 11:33:36 +00:00

trace_output.h

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trace_printk.c

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trace_probe.c

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trace_probe.h

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trace_sched_switch.c

tracing: Fix sched switch start/stop refcount racy updates

2020-02-14 16:32:07 -05:00

trace_sched_wakeup.c

tracing: Fix memleak due to race between current_tracer and trace

2023-08-30 16:35:14 +02:00

trace_selftest_dynamic.c

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trace_selftest.c

ftrace: Handle tracing when switching between context

2020-11-10 10:29:04 +01:00

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 20:05:40 +01:00

trace_stat.c

tracing: Fix very unlikely race of registering two stat tracers

2020-02-28 16:35:58 +01:00

trace_stat.h

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trace_syscalls.c

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trace_uprobe.c

tracing/uprobes: Fix output for multiple string arguments

2019-02-20 10:20:53 +01:00

trace.c

tracing: Have large events show up as '[LINE TOO BIG]' instead of nothing

2024-02-02 11:33:36 +00:00

trace.h

tracing: Make sure trace_printk() can output as soon as it can be used

2023-02-06 07:46:31 +01:00

tracing_map.c

tracing: Fix a kmemleak false positive in tracing_map

2021-12-22 09:17:58 +01:00

tracing_map.h

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