#include #include #include #include #include #include #include #include #include #include #include "libbpf.h" #include "bpf_load.h" #include "perf-sys.h" #define SAMPLE_PERIOD 0x7fffffffffffffffULL static void test_bpf_perf_event(void) { int nr_cpus = sysconf(_SC_NPROCESSORS_CONF); int *pmu_fd = malloc(nr_cpus * sizeof(int)); int status, i; struct perf_event_attr attr_insn_pmu = { .freq = 0, .sample_period = SAMPLE_PERIOD, .inherit = 0, .type = PERF_TYPE_HARDWARE, .read_format = 0, .sample_type = 0, .config = 0,/* PMU: cycles */ }; for (i = 0; i < nr_cpus; i++) { pmu_fd[i] = sys_perf_event_open(&attr_insn_pmu, -1/*pid*/, i/*cpu*/, -1/*group_fd*/, 0); if (pmu_fd[i] < 0) { printf("event syscall failed\n"); goto exit; } bpf_map_update_elem(map_fd[0], &i, &pmu_fd[i], BPF_ANY); ioctl(pmu_fd[i], PERF_EVENT_IOC_ENABLE, 0); } status = system("ls > /dev/null"); if (status) goto exit; status = system("sleep 2"); if (status) goto exit; exit: for (i = 0; i < nr_cpus; i++) close(pmu_fd[i]); close(map_fd[0]); free(pmu_fd); } int main(int argc, char **argv) { char filename[256]; snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]); if (load_bpf_file(filename)) { printf("%s", bpf_log_buf); return 1; } test_bpf_perf_event(); read_trace_pipe(); return 0; } ='sub right'>Tobias Klauser
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authorHarsh Jain <harsh@chelsio.com>2017-02-01 21:10:28 +0530
committerHerbert Xu <herbert@gondor.apana.org.au>2017-02-03 17:45:48 +0800
commit0b529f143e8baad441a5aac9ad55ec2434d8fb46 (patch)
treefd816e548e12745d4776ad0bd661bec142d3ea06 /net/ipv4/netfilter/ipt_rpfilter.c
parentc26819900036f5b91608051a0fc7c76f6b4ffc7b (diff)
crypto: algif_aead - Fix kernel panic on list_del
Kernel panics when userspace program try to access AEAD interface. Remove node from Linked List before freeing its memory. Cc: <stable@vger.kernel.org> Signed-off-by: Harsh Jain <harsh@chelsio.com> Reviewed-by: Stephan Müller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'net/ipv4/netfilter/ipt_rpfilter.c')