zhoumin 1fce9574b9 ftrace: Add cond_resched() to ftrace_graph_set_hash() ...

commit 42ea22e754 upstream.

When the kernel contains a large number of functions that can be traced,
the loop in ftrace_graph_set_hash() may take a lot of time to execute.
This may trigger the softlockup watchdog.

Add cond_resched() within the loop to allow the kernel to remain
responsive even when processing a large number of functions.

This matches the cond_resched() that is used in other locations of the
code that iterates over all functions that can be traced.

Cc: stable@vger.kernel.org
Fixes: b9b0c831be ("ftrace: Convert graph filter to use hash tables")
Link: https://lore.kernel.org/tencent_3E06CE338692017B5809534B9C5C03DA7705@qq.com
Signed-off-by: zhoumin <teczm@foxmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-04-20 10:15:54 +02:00

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rv

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blktrace.c

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bpf_trace.c

bpf: Use preempt_count() directly in bpf_send_signal_common()

2025-04-10 14:39:19 +02:00

bpf_trace.h

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error_report-traces.c

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fgraph.c

fgraph: Add READ_ONCE() when accessing fgraph_array[]

2025-01-09 13:33:52 +01:00

fprobe.c

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ftrace_internal.h

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ftrace.c

ftrace: Add cond_resched() to ftrace_graph_set_hash()

2025-04-20 10:15:54 +02:00

Kconfig

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kprobe_event_gen_test.c

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Makefile

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pid_list.c

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pid_list.h

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power-traces.c

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preemptirq_delay_test.c

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rethook.c

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ring_buffer_benchmark.c

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ring_buffer.c

ring-buffer: Fix bytes_dropped calculation issue

2025-04-10 14:39:27 +02:00

rpm-traces.c

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synth_event_gen_test.c

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trace_benchmark.c

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trace_benchmark.h

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trace_boot.c

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trace_branch.c

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trace_btf.c

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trace_btf.h

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trace_clock.c

tracing: Use atomic64_inc_return() in trace_clock_counter()

2024-12-14 20:03:58 +01:00

trace_dynevent.c

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trace_dynevent.h

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trace_entries.h

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trace_eprobe.c

tracing/eprobe: Fix to release eprobe when failed to add dyn_event

2024-12-14 20:04:13 +01:00

trace_event_perf.c

trace/trace_event_perf: remove duplicate samples on the first tracepoint event

2024-12-05 14:02:02 +01:00

trace_events_filter_test.h

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trace_events_filter.c

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trace_events_hist.c

tracing: Correct the refcount if the hist/hist_debug file fails to open

2025-04-10 14:39:35 +02:00

trace_events_inject.c

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trace_events_synth.c

tracing: Do not add length to print format in synthetic events

2025-04-20 10:15:50 +02:00

trace_events_trigger.c

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trace_events_user.c

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trace_events.c

tracing: fix return value in __ftrace_event_enable_disable for TRACE_REG_UNREGISTER

2025-04-20 10:15:21 +02:00

trace_export.c

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trace_fprobe.c

tracing: fprobe events: Fix possible UAF on modules

2025-04-20 10:15:50 +02:00

trace_functions_graph.c

tracing: Fix use-after-free in print_graph_function_flags during tracer switching

2025-04-10 14:39:39 +02:00

trace_functions.c

ftrace: Correct preemption accounting for function tracing.

2025-02-27 04:30:23 -08:00

trace_hwlat.c

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trace_irqsoff.c

tracing: Fix use-after-free in print_graph_function_flags during tracer switching

2025-04-10 14:39:39 +02:00

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: Make trace_kprobe's module callback called after jump_label update

2025-01-02 10:34:16 +01:00

trace_mmiotrace.c

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trace_nop.c

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trace_osnoise.c

tracing/osnoise: Fix possible recursive locking for cpus_read_lock()

2025-04-10 14:39:39 +02:00

trace_output.c

tracing: Check "%s" dereference via the field and not the TP_printk format

2024-12-27 14:02:16 +01:00

trace_output.h

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trace_preemptirq.c

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trace_printk.c

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trace_probe_kernel.h

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trace_probe_tmpl.h

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trace_probe.c

tracing: probe-events: Add comments about entry data storing code

2025-04-20 10:15:27 +02:00

trace_probe.h

tracing: probe-events: Remove unused MAX_ARG_BUF_LEN macro

2025-03-13 13:02:05 +01:00

trace_recursion_record.c

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trace_sched_switch.c

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trace_sched_wakeup.c

tracing: Fix use-after-free in print_graph_function_flags during tracer switching

2025-04-10 14:39:39 +02:00

trace_selftest_dynamic.c

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trace_selftest.c

sched/fair: Fix external p->on_rq users

2024-10-14 09:14:35 +02:00

trace_seq.c

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trace_stack.c

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trace_stat.c

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trace_stat.h

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trace_synth.h

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trace_syscalls.c

tracing/ftrace: disable preemption in syscall probe

2024-12-14 20:03:58 +01:00

trace_uprobe.c

bpf: Fix theoretical prog_array UAF in __uprobe_perf_func()

2024-12-19 18:13:09 +01:00

trace.c

tracing: Fix using ret variable in tracing_set_tracer()

2025-02-27 04:30:24 -08:00

trace.h

tracing: Check "%s" dereference via the field and not the TP_printk format

2024-12-27 14:02:16 +01:00

tracing_map.c

tracing: Fix cmp_entries_dup() to respect sort() comparison rules

2024-12-14 20:03:21 +01:00

tracing_map.h

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