android_kernel_motorola_sm6375/kernel/trace
Repository files (latest commit first)
Filename Latest commit message Latest commit date
Randy Dunlap 4dd5d3310c tracing: Fix return value of __setup handlers
commit 1d02b444b8d1345ea4708db3bab4db89a7784b55 upstream.

__setup() handlers should generally return 1 to indicate that the
boot options have been handled.

Using invalid option values causes the entire kernel boot option
string to be reported as Unknown and added to init's environment
strings, polluting it.

  Unknown kernel command line parameters "BOOT_IMAGE=/boot/bzImage-517rc6
    kprobe_event=p,syscall_any,$arg1 trace_options=quiet
    trace_clock=jiffies", will be passed to user space.

 Run /sbin/init as init process
   with arguments:
     /sbin/init
   with environment:
     HOME=/
     TERM=linux
     BOOT_IMAGE=/boot/bzImage-517rc6
     kprobe_event=p,syscall_any,$arg1
     trace_options=quiet
     trace_clock=jiffies

Return 1 from the __setup() handlers so that init's environment is not
polluted with kernel boot options.

Link: lore.kernel.org/r/64644a2f-4a20-bab3-1e15-3b2cdd0defe3@omprussia.ru
Link: https://lkml.kernel.org/r/20220303031744.32356-1-rdunlap@infradead.org

Cc: stable@vger.kernel.org
Fixes: 7bcfaf54f5 ("tracing: Add trace_options kernel command line parameter")
Fixes: e1e232ca6b ("tracing: Add trace_clock=<clock> kernel parameter")
Fixes: 970988e19e ("tracing/kprobe: Add kprobe_event= boot parameter")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-08 19:07:50 +01:00
..
blktrace.c blktrace: Fix uaf in blk_trace access after removing by sysfs 2021-09-30 10:09:24 +02:00
bpf_trace.c tracepoint: Add tracepoint_probe_register_may_exist() for BPF tracing 2021-07-14 16:53:08 +02:00
fgraph.c fgraph: Initialize tracing_graph_pause at task creation 2021-02-10 09:25:29 +01:00
ftrace.c ftrace: add ftrace_init_nop() 2022-02-23 11:59:56 +01:00
ftrace_internal.h
Kconfig tracing/kprobes: Do the notrace functions check without kprobes on ftrace 2021-01-19 18:26:12 +01:00
Makefile
power-traces.c
preemptirq_delay_test.c
ring_buffer.c tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop. 2021-07-28 13:31:00 +02:00
ring_buffer_benchmark.c
rpm-traces.c
trace.c tracing: Fix return value of __setup handlers 2022-03-08 19:07:50 +01:00
trace.h tracing: Fix pid filtering when triggers are attached 2021-12-01 09:23:29 +01:00
trace_benchmark.c
trace_benchmark.h
trace_branch.c
trace_clock.c tracing: Do no increment trace_clock_global() by one 2021-06-23 14:41:28 +02:00
trace_dynevent.c
trace_dynevent.h
trace_entries.h tracing: Set kernel_stack's caller size properly 2020-10-01 13:17:29 +02:00
trace_event_perf.c
trace_events.c tracing: Check pid filtering when creating events 2021-12-01 09:23:34 +01:00
trace_events_filter.c
trace_events_filter_test.h
trace_events_hist.c tracing/histogram: Fix sorting on old "cpu" value 2022-03-08 19:07:50 +01:00
trace_events_trigger.c tracing: Have traceon and traceoff trigger honor the instance 2022-03-02 11:41:11 +01:00
trace_export.c
trace_functions.c tracing: Have all levels of checks prevent recursion 2021-10-27 09:54:29 +02:00
trace_functions_graph.c
trace_hwlat.c tracing: Remove WARN_ON in start_thread() 2020-12-08 10:40:28 +01:00
trace_irqsoff.c
trace_kdb.c
trace_kprobe.c tracing: Fix return value of __setup handlers 2022-03-08 19:07:50 +01:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_mmiotrace.c
trace_nop.c
trace_output.c tracing: Make the space reserved for the pid wider 2020-10-07 08:01:27 +02:00
trace_output.h
trace_preemptirq.c lockdep: fix order in trace_hardirqs_off_caller() 2020-10-01 13:18:14 +02:00
trace_printk.c
trace_probe.c tracing/probes: Reject events which have the same name of existing one 2021-09-22 12:26:43 +02:00
trace_probe.h tracing/probes: Reject events which have the same name of existing one 2021-09-22 12:26:43 +02:00
trace_probe_tmpl.h
trace_sched_switch.c
trace_sched_wakeup.c
trace_selftest.c ftrace: Handle tracing when switching between context 2020-11-10 12:37:28 +01:00
trace_selftest_dynamic.c
trace_seq.c
trace_stack.c
trace_stat.c
trace_stat.h
trace_syscalls.c
trace_uprobe.c tracing/uprobe: Fix uprobe_perf_open probes iteration 2021-12-01 09:23:29 +01:00
tracing_map.c tracing: Fix a kmemleak false positive in tracing_map 2021-12-17 10:12:24 +01:00
tracing_map.h