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 <dan...@iogearbox.net>
---
include/linux/filter.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 6b02549..fa2cab9 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <linux/printk.h>
#include <linux/workqueue.h>
+#include <linux/sched.h>
#include <asm/cacheflush.h>
@@ -438,8 +439,9 @@ void bpf_jit_free(struct bpf_prog *fp);
static inline void bpf_jit_dump(unsigned int flen, unsigned int proglen,
u32 pass, void *image)
{
- pr_err("flen=%u proglen=%u pass=%u image=%pK\n",
- flen, proglen, pass, image);
+ pr_err("flen=%u proglen=%u pass=%u image=%pK from=%s pid=%d\n", flen,
+ proglen, pass, image, current->comm, task_pid_nr(current));
+
if (image)
print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET,
16, 1, image, proglen, false);
--
1.9.3
--
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