mirror/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
Files
94eedf3dded5fb472ce97bfaf3ac1c6c29c35d26
linux/kernel/trace
History
Steven Rostedt (Google) 94eedf3dde tracing: Fix race where eprobes can be called before the event 
The flag that tells the event to call its triggers after reading the event
is set for eprobes after the eprobe is enabled. This leads to a race where
the eprobe may be triggered at the beginning of the event where the record
information is NULL. The eprobe then dereferences the NULL record causing
a NULL kernel pointer bug.

Test for a NULL record to keep this from happening.

Link: https://lore.kernel.org/linux-trace-kernel/20221116192552.1066630-1-rafaelmendsr@gmail.com/
Link: https://lore.kernel.org/linux-trace-kernel/20221117214249.2addbe10@gandalf.local.home

Cc: Linux Trace Kernel <linux-trace-kernel@vger.kernel.org>
Cc: Tzvetomir Stoyanov <tz.stoyanov@gmail.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: stable@vger.kernel.org
Fixes: 7491e2c442 ("tracing: Add a probe that attaches to trace events")
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reported-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2022-11-20 14:05:50 -05:00
..
rv
rv/monitor: Add __init/__exit annotations to module init/exit funcs
2022-09-26 18:10:51 -04:00
blktrace.c
blktrace: remove unnessary stop block trace in 'blk_trace_shutdown'
2022-10-20 06:02:52 -07:00
bpf_trace.c
bpf: Fix sample_flags for bpf_perf_event_output
2022-10-17 16:32:06 +02:00
bpf_trace.h
…
error_report-traces.c
…
fgraph.c
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2022-06-03 14:05:34 -07:00
fprobe.c
tracing/fprobe: Fix to check whether fprobe is registered correctly
2022-11-04 08:50:07 +09:00
ftrace_internal.h
…
ftrace.c
ftrace: Fix null pointer dereference in ftrace_add_mod()
2022-11-17 17:16:44 -05:00
Kconfig
ftrace: Add HAVE_DYNAMIC_FTRACE_NO_PATCHABLE
2022-09-16 22:16:48 +02:00
kprobe_event_gen_test.c
tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()
2022-11-04 09:10:03 +09:00
Makefile
rv: Add Runtime Verification (RV) interface
2022-07-30 14:01:28 -04:00
pid_list.c
tracing: Cleanup double word in comment
2022-04-26 17:58:50 -04:00
pid_list.h
…
power-traces.c
…
preemptirq_delay_test.c
…
rethook.c
rethook: Reject getting a rethook if RCU is not watching
2022-06-17 21:53:35 +02:00
ring_buffer_benchmark.c
…
ring_buffer.c
ring_buffer: Do not deactivate non-existant pages
2022-11-17 17:10:40 -05:00
rpm-traces.c
…
synth_event_gen_test.c
tracing: Fix memory leak in test_gen_synth_cmd() and test_empty_synth_event()
2022-11-17 17:51:38 -05:00
trace_benchmark.c
tracing: Add numeric delta time to the trace event benchmark
2022-09-26 13:01:09 -04:00
trace_benchmark.h
tracing: Add numeric delta time to the trace event benchmark
2022-09-26 13:01:09 -04:00
trace_boot.c
tracing: Initialize integer variable to prevent garbage return value
2022-05-26 21:13:00 -04:00
trace_branch.c
…
trace_clock.c
…
trace_dynevent.c
tracing: Auto generate event name when creating a group of events
2022-07-24 19:11:17 -04:00
trace_dynevent.h
…
trace_entries.h
…
trace_eprobe.c
tracing: Fix race where eprobes can be called before the event
2022-11-20 14:05:50 -05:00
trace_event_perf.c
tracing/perf: Fix double put of trace event when init fails
2022-08-21 15:56:07 -04:00
trace_events_filter_test.h
…
trace_events_filter.c
tracing/filter: Call filter predicate functions directly via a switch statement
2022-09-26 13:01:10 -04:00
trace_events_hist.c
tracing/hist: Call hist functions directly via a switch statement
2022-09-26 13:01:10 -04:00
trace_events_inject.c
tracing: Support __rel_loc relative dynamic data location attribute
2021-12-06 15:37:21 -05:00
trace_events_synth.c
tracing: Fix wild-memory-access in register_synth_event()
2022-11-17 18:24:58 -05:00
trace_events_trigger.c
tracing: Fix to check event_mutex is held while accessing trigger list
2022-09-06 22:26:00 -04:00
trace_events_user.c
tracing/user_events: Move pages/locks into groups to prepare for namespaces
2022-10-03 13:28:46 -04:00
trace_events.c
tracing: Have filter accept "common_cpu" to be consistent
2022-08-21 15:56:08 -04:00
trace_export.c
…
trace_functions_graph.c
…
trace_functions.c
ftrace: disable preemption when recursion locked
2021-10-27 11:21:49 -04:00
trace_hwlat.c
trace/hwlat: make use of the helper function kthread_run_on_cpu()
2022-01-15 16:30:24 +02:00
trace_irqsoff.c
…
trace_kdb.c
…
trace_kprobe_selftest.c
…
trace_kprobe_selftest.h
…
trace_kprobe.c
tracing: Move duplicate code of trace_kprobe/eprobe.c into header
2022-10-12 13:50:00 -04:00
trace_mmiotrace.c
…
trace_nop.c
…
trace_osnoise.c
tracing/osnoise: Fix possible recursive locking in stop_per_cpu_kthreads
2022-09-26 16:05:18 -04:00
trace_output.c
tracing: Remove usage of list iterator after the loop body
2022-04-27 17:19:30 -04:00
trace_output.h
…
trace_preemptirq.c
tracing: hold caller_addr to hardirq_{enable,disable}_ip
2022-09-06 22:26:00 -04:00
trace_printk.c
…
trace_probe_kernel.h
tracing: Add "(fault)" name injection to kernel probes
2022-10-12 13:50:20 -04:00
trace_probe_tmpl.h
…
trace_probe.c
tracing/probes: Have kprobes and uprobes use $COMM too
2022-08-21 15:56:08 -04:00
trace_probe.h
tracing/eprobe: Add eprobe filter support
2022-09-26 13:01:08 -04:00
trace_recursion_record.c
tracing: Use trace_create_file() to simplify creation of tracefs entries
2022-05-26 21:12:52 -04:00
trace_sched_switch.c
sched/tracing: Append prev_state to tp args instead
2022-05-12 00:37:11 +02:00
trace_sched_wakeup.c
sched/tracing: Append prev_state to tp args instead
2022-05-12 00:37:11 +02:00
trace_selftest_dynamic.c
…
trace_selftest.c
tracing: Reset the function filter after completing trampoline/graph selftest
2022-05-25 16:57:37 -04:00
trace_seq.c
…
trace_stack.c
…
trace_stat.c
…
trace_stat.h
…
trace_synth.h
…
trace_syscalls.c
tracing: Remove unused __bad_type_size() method
2022-11-17 20:21:06 -05:00
trace_uprobe.c
Merge tag 'trace-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2022-08-05 09:41:12 -07:00
trace.c
tracing: Fix potential null-pointer-access of entry in list 'tr->err_log'
2022-11-17 20:41:01 -05:00
trace.h
tracing: Move struct filter_pred into trace_events_filter.c
2022-09-26 13:01:10 -04:00
tracing_map.c
tracing: Remove unused variable 'dups'
2022-10-03 12:20:31 -04:00
tracing_map.h
…