Hao Luo 2a77c58726 bpf: Add MEM_RDONLY for helper args that are pointers to rdonly mem. ... commit 216e3cd2f2 upstream. Some helper functions may modify its arguments, for example, bpf_d_path, bpf_get_stack etc. Previously, their argument types were marked as ARG_PTR_TO_MEM, which is compatible with read-only mem types, such as PTR_TO_RDONLY_BUF. Therefore it's legitimate, but technically incorrect, to modify a read-only memory by passing it into one of such helper functions. This patch tags the bpf_args compatible with immutable memory with MEM_RDONLY flag. The arguments that don't have this flag will be only compatible with mutable memory types, preventing the helper from modifying a read-only memory. The bpf_args that have MEM_RDONLY are compatible with both mutable memory and immutable memory. Signed-off-by: Hao Luo <haoluo@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20211217003152.48334-9-haoluo@google.com Cc: stable@vger.kernel.org # 5.15.x Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-05-01 17:22:26 +02:00
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Kconfig	tracing: Simplify the Kconfig dependency of FTRACE	2021-08-16 11:37:20 -04:00
Makefile	tracing: Add a probe that attaches to trace events	2021-08-20 14:18:40 -04:00
blktrace.c	blktrace: fix use after free for struct blk_trace	2022-03-08 19:12:43 +01:00
bpf_trace.c	bpf: Add MEM_RDONLY for helper args that are pointers to rdonly mem.	2022-05-01 17:22:26 +02:00
bpf_trace.h	bpf: Use dedicated bpf_trace_printk event instead of trace_printk()	2020-07-13 16:55:49 -07:00
error_report-traces.c	tracing: add error_report_end trace point	2021-02-26 09:41:02 -08:00
fgraph.c	tracing: Fix various typos in comments	2021-03-23 14:08:18 -04:00
ftrace.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
ftrace_internal.h	…
kprobe_event_gen_test.c	…
power-traces.c	…
preemptirq_delay_test.c	kernel: trace: preemptirq_delay_test: add cpu affinity	2021-02-02 17:02:07 -05:00
ring_buffer.c	ring-buffer: Protect ring_buffer_reset() from reentrancy	2021-11-18 19:16:03 +01:00
ring_buffer_benchmark.c	sched,tracing: Convert to sched_set_fifo()	2020-07-29 11:43:53 +02:00
rpm-traces.c	…
synth_event_gen_test.c	tracing: Fix various typos in comments	2021-03-23 14:08:18 -04:00
trace.c	tracing: Have trace event string test handle zero length strings	2022-04-08 14:22:57 +02:00
trace.h	tracing: Fix pid filtering when triggers are attached	2021-12-01 09:04:43 +01:00
trace_benchmark.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_benchmark.h	…
trace_boot.c	tracing: Fix missing trace_boot_init_histograms kstrdup NULL checks	2021-11-18 19:16:41 +01:00
trace_branch.c	tracing: Merge irqflags + preempt counter.	2021-02-02 17:02:06 -05:00
trace_clock.c	tracing: Do no increment trace_clock_global() by one	2021-06-18 09:10:00 -04:00
trace_dynevent.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_dynevent.h	tracing: Add DYNAMIC flag for dynamic events	2021-08-18 18:10:32 -04:00
trace_entries.h	trace: Add timerlat tracer	2021-06-25 19:57:24 -04:00
trace_eprobe.c	tracing: Fix misspelling of "missing"	2021-10-29 09:54:14 -04:00
trace_event_perf.c	ftrace: do CPU checking after preemption disabled	2021-11-18 19:16:20 +01:00
trace_events.c	tracing: Have type enum modifications copy the strings	2022-04-08 14:24:13 +02:00
trace_events_filter.c	tracing: Add ustring operation to filtering string pointers	2022-03-08 19:12:33 +01:00
trace_events_filter_test.h	…
trace_events_hist.c	tracing/histogram: Fix sorting on old "cpu" value	2022-03-08 19:12:54 +01:00
trace_events_inject.c	tracing: Merge irqflags + preempt counter.	2021-02-02 17:02:06 -05:00
trace_events_synth.c	tracing: Do not let synth_events block other dyn_event systems during create	2022-03-08 19:12:35 +01:00
trace_events_trigger.c	tracing: Have traceon and traceoff trigger honor the instance	2022-03-02 11:48:03 +01:00
trace_export.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_functions.c	tracing: Add "func_no_repeats" option for function tracing	2021-04-15 14:50:02 -04:00
trace_functions_graph.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_hwlat.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_irqsoff.c	tracing: Merge irqflags + preempt counter.	2021-02-02 17:02:06 -05:00
trace_kdb.c	kdb: Rename members of struct kdbtab_t	2021-07-27 17:05:06 +01:00
trace_kprobe.c	tracing: Fix return value of __setup handlers	2022-03-08 19:12:54 +01:00
trace_kprobe_selftest.c	…
trace_kprobe_selftest.h	…
trace_mmiotrace.c	tracing: Remove definition of DEBUG in trace_mmiotrace.c	2021-02-02 17:02:07 -05:00
trace_nop.c	…
trace_osnoise.c	tracing/osnoise: Force quiescent states while tracing	2022-03-16 14:23:43 +01:00
trace_output.c	tracing: Add migrate-disabled counter to tracing output.	2021-09-03 19:42:35 -04:00
trace_output.h	ftrace: Add recording of functions that caused recursion	2020-11-06 08:42:26 -05:00
trace_preemptirq.c	lockdep: fix order in trace_hardirqs_off_caller()	2020-09-14 10:08:07 +02:00
trace_printk.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_probe.c	tracing/probes: check the return value of kstrndup() for pbuf	2022-03-08 19:12:38 +01:00
trace_probe.h	tracing: Add a probe that attaches to trace events	2021-08-20 14:18:40 -04:00
trace_probe_tmpl.h	tracing/probes: Have process_fetch_insn() take a void * instead of pt_regs	2021-08-19 09:09:03 -04:00
trace_recursion_record.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_sched_switch.c	…
trace_sched_wakeup.c	tracing: Change variable type as bool for clean-up	2021-06-30 09:19:14 -04:00
trace_selftest.c	tracing: Fix various typos in comments	2021-03-23 14:08:18 -04:00
trace_selftest_dynamic.c	…
trace_seq.c	tracing: Fix various typos in comments	2021-03-23 14:08:18 -04:00
trace_stack.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_stat.c	tracing: Disable "other" permission bits in the tracefs files	2021-11-18 19:16:15 +01:00
trace_stat.h	…
trace_synth.h	tracing: synth events: increase max fields count	2021-09-08 15:29:16 -04:00
trace_syscalls.c	tracing: Have syscall trace events use trace_event_buffer_lock_reserve()	2022-01-27 11:05:09 +01:00
trace_uprobe.c	tracing/uprobes: Check the return value of kstrdup() for tu->filename	2022-03-08 19:12:38 +01:00
tracing_map.c	tracing: Fix a kmemleak false positive in tracing_map	2021-12-17 10:30:16 +01:00
tracing_map.h	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00