9c481b908b
syzkaller tried to perform a prog query in perf_event_query_prog_array() where struct perf_event_query_bpf had an ids_len of 1,073,741,353 and thus causing a warning due to failed kcalloc() allocation out of the bpf_prog_array_copy_to_user() helper. Given we cannot attach more than 64 programs to a perf event, there's no point in allowing huge ids_len. Therefore, allow a buffer that would fix the maximum number of ids and also add a __GFP_NOWARN to the temporary ids buffer. Fixes: |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| blktrace.c | ||
| bpf_trace.c | ||
| ftrace.c | ||
| power-traces.c | ||
| ring_buffer.c | ||
| ring_buffer_benchmark.c | ||
| rpm-traces.c | ||
| trace.c | ||
| trace.h | ||
| trace_benchmark.c | ||
| trace_benchmark.h | ||
| trace_branch.c | ||
| trace_clock.c | ||
| trace_entries.h | ||
| trace_event_perf.c | ||
| trace_events.c | ||
| trace_events_filter.c | ||
| trace_events_filter_test.h | ||
| trace_events_hist.c | ||
| trace_events_trigger.c | ||
| trace_export.c | ||
| trace_functions.c | ||
| trace_functions_graph.c | ||
| trace_hwlat.c | ||
| trace_irqsoff.c | ||
| trace_kdb.c | ||
| trace_kprobe.c | ||
| trace_mmiotrace.c | ||
| trace_nop.c | ||
| trace_output.c | ||
| trace_output.h | ||
| trace_printk.c | ||
| trace_probe.c | ||
| trace_probe.h | ||
| trace_sched_switch.c | ||
| trace_sched_wakeup.c | ||
| trace_selftest.c | ||
| trace_selftest_dynamic.c | ||
| trace_seq.c | ||
| trace_stack.c | ||
| trace_stat.c | ||
| trace_stat.h | ||
| trace_syscalls.c | ||
| trace_uprobe.c | ||
| tracing_map.c | ||
| tracing_map.h | ||