Di Shen 4e2e6841ff bpf: Revert "bpf: remove unnecessary rcu_read_{lock,unlock}() in multi-uprobe attach logic" ...

This reverts commit 4a8f635a60.

Althought get_pid_task() internally already calls rcu_read_lock() and
rcu_read_unlock(), the find_vpid() was not.

The documentation for find_vpid() clearly states:
"Must be called with the tasklist_lock or rcu_read_lock() held."

Add proper rcu_read_lock/unlock() to protect the find_vpid().

Fixes: 4a8f635a60 ("bpf: remove unnecessary rcu_read_{lock,unlock}() in multi-uprobe attach logic")
Reported-by: Xuewen Yan <xuewen.yan@unisoc.com>
Signed-off-by: Di Shen <di.shen@unisoc.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20250520054943.5002-1-xuewen.yan@unisoc.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

2025-05-22 07:49:32 -07:00

..

rv

rv: Fix out-of-bound memory access in rv_is_container_monitor()

2025-04-12 12:13:30 -04:00

blktrace.c

blktrace: remove redundant return at end of function

2024-12-23 08:17:23 -07:00

bpf_trace.c

bpf: Revert "bpf: remove unnecessary rcu_read_{lock,unlock}() in multi-uprobe attach logic"

2025-05-22 07:49:32 -07:00

bpf_trace.h

tracing/treewide: Remove second parameter of __assign_str()

2024-05-22 20:14:47 -04:00

error_report-traces.c

…

fgraph.c

fgraph: Correct typo in ftrace_return_to_handler comment

2025-03-04 11:15:50 -05:00

fprobe.c

tracing: fprobe: Cleanup fprobe hash when module unloading

2025-04-08 08:46:25 +09:00

ftrace_internal.h

function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE

2024-06-10 18:08:23 -04:00

ftrace.c

ftrace: fix incorrect hash size in register_ftrace_direct()

2025-04-17 15:16:51 -04:00

Kconfig

ftrace: Have tracing function args depend on PROBE_EVENTS_BTF_ARGS

2025-04-02 09:50:56 -04:00

kprobe_event_gen_test.c

…

Makefile

…

pid_list.c

pid: allow pid_max to be set per pid namespace

2024-12-02 11:25:25 +01:00

pid_list.h

…

power-traces.c

…

preemptirq_delay_test.c

minmax: make generic MIN() and MAX() macros available everywhere

2024-07-28 15:49:18 -07:00

rethook.c

rethook: honor CONFIG_FTRACE_VALIDATE_RCU_IS_WATCHING in rethook_try_get()

2024-05-01 23:18:48 +09:00

ring_buffer_benchmark.c

ring-buffer: Use str_low_high() helper in ring_buffer_producer()

2024-10-19 11:12:25 -04:00

ring_buffer.c

Merge tag 'trace-ringbuffer-v6.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-04-03 16:09:29 -07:00

rpm-traces.c

…

synth_event_gen_test.c

tracing / synthetic: Disable events after testing in synth_event_gen_test_init()

2023-12-21 10:04:45 -05:00

trace_benchmark.c

tracing: Improve benchmark test performance by using do_div()

2024-05-13 20:00:57 -04:00

trace_benchmark.h

…

trace_boot.c

tracing: Allow creating instances with specified system events

2023-12-18 23:14:16 -05:00

trace_branch.c

tracing: Remove TRACE_EVENT_FL_FILTERED logic

2024-10-08 15:24:49 -04:00

trace_btf.c

tracing/probes: Fix to search structure fields correctly

2024-02-17 21:25:42 +09:00

trace_btf.h

…

trace_clock.c

tracing: Use atomic64_inc_return() in trace_clock_counter()

2024-10-09 19:59:49 -04:00

trace_dynevent.c

tracing/string: Create and use __free(argv_free) in trace_dynevent.c

2024-12-26 10:38:37 -05:00

trace_dynevent.h

…

trace_entries.h

ftrace: Fix type of ftrace_graph_ent_entry.depth

2025-04-17 15:19:15 -04:00

trace_eprobe.c

Merge tag 'probes-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-03-27 19:31:34 -07:00

trace_event_perf.c

perf: Remove unnecessary parameter of security check

2025-02-26 14:13:58 -05:00

trace_events_filter_test.h

…

trace_events_filter.c

tracing: Fix filter string testing

2025-04-17 22:16:56 -04:00

trace_events_hist.c

Merge tag 'trace-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-03-27 16:22:12 -07:00

trace_events_inject.c

tracing: Have format file honor EVENT_FILE_FL_FREED

2024-08-07 18:12:46 -04:00

trace_events_synth.c

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

2025-04-09 11:34:21 -04:00

trace_events_trigger.c

tracing: Constify struct event_trigger_ops

2025-03-20 07:04:00 -04:00

trace_events_user.c

tracing/user_events: Slightly simplify user_seq_show()

2025-03-06 13:35:27 -05:00

trace_events.c

tracing: Verify event formats that have "%*p.."

2025-04-02 09:51:26 -04:00

trace_export.c

…

trace_fprobe.c

Merge tag 'probes-fixes-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-04-08 12:51:34 -07:00

trace_functions_graph.c

ftrace: Do not have print_graph_retval() add a newline

2025-04-12 12:13:30 -04:00

trace_functions.c

ftrace: Add arguments to function tracer

2025-03-04 11:27:24 -05:00

trace_hwlat.c

tracing: Remove TRACE_EVENT_FL_FILTERED logic

2024-10-08 15:24:49 -04:00

trace_irqsoff.c

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

2025-03-22 05:42:42 -04:00

trace_kdb.c

trace: kdb: Replace simple_strtoul with kstrtoul in kdb_ftdump

2024-11-02 08:33:13 +00:00

trace_kprobe_selftest.c

…

trace_kprobe_selftest.h

…

trace_kprobe.c

Merge tag 'modules-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux

2025-03-30 15:44:36 -07:00

trace_mmiotrace.c

tracing: Remove TRACE_EVENT_FL_FILTERED logic

2024-10-08 15:24:49 -04:00

trace_nop.c

…

trace_osnoise.c

Merge tag 'trace-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-03-27 16:22:12 -07:00

trace_output.c

Merge tag 'trace-ringbuffer-v6.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-03-31 13:37:22 -07:00

trace_output.h

ftrace: Add print_function_args()

2025-03-04 11:27:23 -05:00

trace_preemptirq.c

tracing: Fix archs that still call tracepoints without RCU watching

2024-12-05 09:28:58 -05:00

trace_printk.c

…

trace_probe_kernel.h

…

trace_probe_tmpl.h

tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS

2024-12-26 10:50:04 -05:00

trace_probe.c

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

2025-03-27 21:19:54 +09:00

trace_probe.h

tracing: probe-events: Log error for exceeding the number of arguments

2025-03-27 21:19:54 +09:00

trace_recursion_record.c

…

trace_sched_switch.c

pid: allow pid_max to be set per pid namespace

2024-12-02 11:25:25 +01:00

trace_sched_wakeup.c

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

2025-03-22 05:42:42 -04:00

trace_selftest_dynamic.c

…

trace_selftest.c

fgraph: Pass ftrace_regs to retfunc

2024-12-26 10:50:03 -05:00

trace_seq.c

trace_seq: Increase the buffer size to almost two pages

2023-12-18 23:14:16 -05:00

trace_stack.c

tracing: Switch trace_stack.c code over to use guard()

2024-12-26 10:38:37 -05:00

trace_stat.c

tracing: Switch trace_stat.c code over to use guard()

2024-12-26 10:38:37 -05:00

trace_stat.h

…

trace_synth.h

…

trace_syscalls.c

tracing/perf: Add might_fault check to syscall probes

2024-10-09 17:09:46 -04:00

trace_uprobe.c

bpf: Add support to retrieve ref_ctr_offset for uprobe perf link

2025-05-09 13:01:07 -07:00

trace.c

tracing: Hide get_vm_area() from MMUless builds

2025-04-07 12:02:11 -04:00

trace.h

Merge tag 'trace-ringbuffer-v6.15-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

2025-04-03 16:09:29 -07:00

tracing_map.c

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

2024-12-04 10:38:24 -05:00

tracing_map.h

…