Andrii Nakryiko 02553b91da bpf: bpf_probe_read_kernel_str() has to return amount of data read on success ... During recent refactorings, bpf_probe_read_kernel_str() started returning 0 on success, instead of amount of data successfully read. This majorly breaks applications relying on bpf_probe_read_kernel_str() and bpf_probe_read_str() and their results. Fix this by returning actual number of bytes read. Fixes: 8d92db5c04 ("bpf: rework the compat kernel probe handling") Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20200616050432.1902042-1-andriin@fb.com		2020-06-17 17:50:02 +02:00
..
blktrace.c	blktrace: fix endianness for blk_log_remap()	2020-06-04 21:23:38 -06:00
bpf_trace.c	bpf: bpf_probe_read_kernel_str() has to return amount of data read on success	2020-06-17 17:50:02 +02:00
fgraph.c	tracing: Define MCOUNT_INSN_SIZE when not defined without direct calls	2020-01-02 21:56:44 -05:00
ftrace_internal.h	x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up	2020-05-12 18:24:34 -04:00
ftrace.c	Tracing updates for 5.8:	2020-06-09 10:06:18 -07:00
Kconfig	Tracing updates for 5.8:	2020-06-09 10:06:18 -07:00
kprobe_event_gen_test.c	tracing: Add kprobe event command generation test module	2020-01-30 09:46:28 -05:00
Makefile	Rebase locking/kcsan to locking/urgent	2020-06-11 20:02:46 +02:00
power-traces.c
preemptirq_delay_test.c	tracing: Wait for preempt irq delay thread to execute	2020-05-11 17:00:34 -04:00
ring_buffer_benchmark.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
ring_buffer.c	ring-buffer: Remove all BUG() calls	2020-05-14 08:51:02 -04:00
rpm-traces.c
synth_event_gen_test.c	tracing: Have synthetic event test use raw_smp_processor_id()	2020-02-20 17:43:41 -05:00
trace_benchmark.c	trace: Use pr_warn instead of pr_warning	2019-10-18 15:01:57 +02:00
trace_benchmark.h
trace_boot.c	tracing/boottime: Fix kprobe event API usage	2020-05-06 09:04:11 -04:00
trace_branch.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_clock.c
trace_dynevent.c	tracing: Use seq_buf for building dynevent_cmd string	2020-02-01 13:10:15 -05:00
trace_dynevent.h	tracing: Remove check_arg() callbacks from dynevent args	2020-02-01 13:09:23 -05:00
trace_entries.h	tracing: Have hwlat ts be first instance and record count of instances	2020-03-03 17:33:43 -05:00
trace_event_perf.c	Merge branch 'perf/urgent' into perf/core, to pick up fixes	2019-10-28 12:38:26 +01:00
trace_events_filter_test.h
trace_events_filter.c	tracing: Avoid memory leak in process_system_preds()	2019-12-19 18:24:17 -05:00
trace_events_hist.c	tracing: Move synthetic events to a separate file	2020-06-01 08:23:22 -04:00
trace_events_inject.c	tracing: Initialize val to zero in parse_entry of inject code	2020-01-02 19:04:57 -05:00
trace_events_synth.c	tracing: Move synthetic events to a separate file	2020-06-01 08:23:22 -04:00
trace_events_trigger.c	tracing: Fix the race between registering 'snapshot' event trigger and triggering 'snapshot' operation	2020-04-14 22:02:10 -04:00
trace_events.c	tracing: Add hist_debug trace event files for histogram debugging	2020-06-01 08:22:30 -04:00
trace_export.c	Linux 5.5-rc1	2019-12-10 10:11:00 +01:00
trace_functions_graph.c	ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()	2020-03-19 19:11:19 -04:00
trace_functions.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_hwlat.c	tracing: Have hwlat ts be first instance and record count of instances	2020-03-03 17:33:43 -05:00
trace_irqsoff.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_kdb.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-06-13 16:27:13 -07:00
trace_mmiotrace.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_nop.c
trace_output.c	mmap locking API: use coccinelle to convert mmap_sem rwsem call sites	2020-06-09 09:39:14 -07:00
trace_output.h
trace_preemptirq.c	x86/entry: Rename trace_hardirqs_off_prepare()	2020-06-11 15:15:24 +02:00
trace_printk.c	tracing: Add locked_down checks to the open calls of files created for tracefs	2019-10-12 20:48:06 -04:00
trace_probe_tmpl.h
trace_probe.c	tracing/probe: reverse arguments to list_add	2020-05-19 21:10:50 -04:00
trace_probe.h	tracing/uprobe: Fix to make trace_uprobe_filter alignment safe	2020-01-22 07:09:20 -05:00
trace_sched_switch.c	tracing: Fix sched switch start/stop refcount racy updates	2020-01-30 09:46:10 -05:00
trace_sched_wakeup.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_selftest_dynamic.c
trace_selftest.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_seq.c	tracing: Remove unused TRACE_SEQ_BUF_USED	2020-01-21 18:39:54 -05:00
trace_stack.c	trace: fix an incorrect __user annotation on stack_trace_sysctl	2020-06-08 10:13:56 -04:00
trace_stat.c	tracing: Fix tracing_stat return values in error handling paths	2020-01-24 18:06:48 -05:00
trace_stat.h	tracing: Use generic type for comparator function	2019-11-14 13:15:11 -05:00
trace_synth.h	tracing: Move synthetic events to a separate file	2020-06-01 08:23:22 -04:00
trace_syscalls.c	Tracing updates:	2020-02-06 07:12:11 +00:00
trace_uprobe.c	tracing/probe: Fix bpf_task_fd_query() for kprobes and uprobes	2020-06-09 11:10:12 -07:00
trace.c	Tracing updates for 5.8:	2020-06-09 10:06:18 -07:00
trace.h	tracing: Add hist_debug trace event files for histogram debugging	2020-06-01 08:22:30 -04:00
tracing_map.c	tracing: Convert local functions in tracing_map.c to static	2020-04-22 22:07:26 -04:00
tracing_map.h