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bpf: also show process name/pid in bpf_jit_dump
It can be useful for testing to see the actual process/pid who is loading a given filter. I was running some BPF test program and noticed unusual filter loads from time to time, triggered by some other application in the background. bpf_jit_disasm is still working after this change. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -12,6 +12,7 @@
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#include <linux/linkage.h>
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#include <linux/printk.h>
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#include <linux/workqueue.h>
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#include <linux/sched.h>
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#include <asm/cacheflush.h>
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@ -438,8 +439,9 @@ void bpf_jit_free(struct bpf_prog *fp);
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static inline void bpf_jit_dump(unsigned int flen, unsigned int proglen,
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u32 pass, void *image)
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{
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pr_err("flen=%u proglen=%u pass=%u image=%pK\n",
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flen, proglen, pass, image);
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pr_err("flen=%u proglen=%u pass=%u image=%pK from=%s pid=%d\n", flen,
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proglen, pass, image, current->comm, task_pid_nr(current));
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if (image)
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print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET,
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16, 1, image, proglen, false);
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