#ifndef __BPF_UTIL__ #define __BPF_UTIL__ #include #include #include #include static inline unsigned int bpf_num_possible_cpus(void) { static const char *fcpu = "/sys/devices/system/cpu/possible"; unsigned int start, end, possible_cpus = 0; char buff[128]; FILE *fp; fp = fopen(fcpu, "r"); if (!fp) { printf("Failed to open %s: '%s'!\n", fcpu, strerror(errno)); exit(1); } while (fgets(buff, sizeof(buff), fp)) { if (sscanf(buff, "%u-%u", &start, &end) == 2) { possible_cpus = start == 0 ? end + 1 : 0; break; } } fclose(fp); if (!possible_cpus) { printf("Failed to retrieve # possible CPUs!\n"); exit(1); } return possible_cpus; } #endif /* __BPF_UTIL__ */ ass='main'>index : net-next.git net-next plumbingsTobias Klauser

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path: root/sound/soc/amd/Makefile

class='deletions'>-0/+23

Age	Commit message (Expand)	Author	Files	Lines
	The patch fixes the case when adding a zero value to the packet pointer. The zero value could come from src_reg equals type BPF_K or CONST_IMM. The patch fixes both, otherwise the verifer reports the following error: [...] R0=imm0,min_value=0,max_value=0 R1=pkt(id=0,off=0,r=4) R2=pkt_end R3=fp-12 R4=imm4,min_value=4,max_value=4 R5=pkt(id=0,off=4,r=4) 269: (bf) r2 = r0 // r2 becomes imm0 270: (77) r2 >>= 3 271: (bf) r4 = r1 // r4 becomes pkt ptr 272: (0f) r4 += r2 // r4 += 0 addition of negative constant to packet pointer is not allowed Signed-off-by: William Tu <u9012063@gmail.com> Signed-off-by: Mihai Budiu <mbudiu@vmware.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06	bpf: test for AND edge cases	Josef Bacik	1	-0/+55
	These two tests are based on the work done for f23cc643f9ba. The first test is just a basic one to make sure we don't allow AND'ing negative values, even if it would result in a valid index for the array. The second is a cleaned up version of the original testcase provided by Jann Horn that resulted in the commit. Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>