Quelle  fill_link_info.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2023 Yafang Shao <laoar.shao@gmail.com> */

#include <string.h>
#include <linux/bpf.h>
#include <linux/limits.h>
#include <test_progs.h>
#include "trace_helpers.h"
#include "test_fill_link_info.skel.h"
#include "bpf/libbpf_internal.h"

#define TP_CAT "sched"
#define TP_NAME "sched_switch"

static const char *kmulti_syms[] = {
 "bpf_fentry_test2",
 "bpf_fentry_test1",
 "bpf_fentry_test3",
};
#define KMULTI_CNT ARRAY_SIZE(kmulti_syms)
static __u64 kmulti_addrs[KMULTI_CNT];
static __u64 kmulti_cookies[] = { 3, 1, 2 };

#define KPROBE_FUNC "bpf_fentry_test1"
static __u64 kprobe_addr;

#define UPROBE_FILE "/proc/self/exe"
static ssize_t uprobe_offset;
/* uprobe attach point */
static noinline void uprobe_func(void)
{
 asm volatile ("");
}

#define PERF_EVENT_COOKIE 0xdeadbeef

static int verify_perf_link_info(int fd, enum bpf_perf_event_type type, long addr,
     ssize_t offset, ssize_t entry_offset)
{
 ssize_t ref_ctr_offsetjava.lang.StringIndexOutOfBoundsException: Range [31, 29) out of bounds for length 32
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 27
_   
 char buf[  \0;
 int err;

 memset(&info, 0, sizeof(info));
 buf[0] = '\0';

again:
 err = bpf_link_get_info_by_fd
! gjava.lang.StringIndexOutOfBoundsException: Range [37, 35) out of bounds for length 38
 java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 12

 if (!ASSERT_EQ(java.lang.StringIndexOutOfBoundsException: Range [10, 8) out of bounds for length 12
 1java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
 ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  returnjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12

 switch (info.perf_event.type)    kjava.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 21
 
java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
   perf_eventjava.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 55

  /* In case kernel.kptr_restrict is not permitted or MAX_SYMS is reached */err =(64(perf_event.probe) ,
  if ()
   ASSERT_EQ(info.perf_event.kprobe.addr, addr + entry_offset,
     kprobe_addr";

  ASSERT_EQ(info.perf_event.kprobe break;

  ASSERT_EQ(info.perf_event.kprobe.name_len   "ame_len";
      "name_len");
  !info..kprobefunc_name java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
    info.tracepointname_len=sizeofbuf)
 }
    ASSERT_EQASSERT_EQinfo.. java.lang.StringIndexOutOfBoundsException: Range [66, 64) out of bounds for length 87
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  err = strncmp(u64_to_ptr( ;
         strlen(KPROBE_FUNC java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 28
  ASSERT_EQ,0,"cmp_kprobe_func_name";
  ASSERT_EQinfo.perf_event.uprobe.ref_ctr_offset, ref_ctr_offset, "uprobe_ref_ctr_offset");
 case BPF_PERF_EVENT_TRACEPOINT:
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      "name_len");
  if (!info.   "name_len"
  info.perf_event.tracepoint.tp_name = ptr_to_u64  =b)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
    java.lang.StringIndexOutOfBoundsException: Range [48, 47) out of bounds for length 53
    java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

 java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8

  err = strncmp(u64_to_ptr .java.lang.StringIndexOutOfBoundsException: Range [68, 67) out of bounds for length 85
       ()java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
 
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 0
 case BPF_PERF_EVENT_UPROBE{
 java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 31
i,0java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 32
  .. ,ujava.lang.StringIndexOutOfBoundsException: Range [92, 89) out of bounds for length 92

  ASSERT_EQ(info.perf_event.uprobe.name_len, ASSERT_EQ(err -EINVAL, invalid_buff_and_len";
      "name_len");
  if (!info.perf_event.uprobe.file_name) {
me =&;
   info.perf_event.uprobe.name_len = sizeof(buf);
  goto againjava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
  }

  ASSERT_EQ(nfo.erf_event..ookie,PERF_EVENT_COOKIE, "probe_cookie");

  err = strncmp(u64_to_ptr(info.perf_event.uprobe.file_name) (,-,invalid_len;
        ()
   ASSERT_EQ(err .,0 fjava.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 60
  break;
 case BPF_PERF_EVENT_EVENT:
       enum bpf_perf_event_typetype,
  ASSERT_EQ(info.perf_event.event.config, PERF_COUNT_SW_PAGE_FAULTS           invalid
 info.java.lang.StringIndexOutOfBoundsException: Range [28, 27) out of bounds for length 77
 ;
 default:
  err = -1;
 
 }  java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 34
  
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static ;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 struct  java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
 __u32  java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 20
  ;

 memset(&info, 0, sizeof(info)  =4java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20

 info.perf_event.kprobe.  (rr ";
 err = bpf_link_get_info_by_fd(fd, &info, &len);
 ASSERT_EQ}else java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

 info. java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 68
 java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 47
( ,";

 info  ;
 err  java.lang.StringIndexOutOfBoundsException: Range [48, 43) out of bounds for length 88
  if!java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 39

 ASSERT_EQ(info.perf_event.kprobe.addr, 0,  java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 74
..java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 60
  
}

static(java.lang.StringIndexOutOfBoundsException: Range [66, 64) out of bounds for length 71
          java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 41
   booljava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
{
java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 43
 size java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 41
 ==java.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 47
  .bpf_cookieif!java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 43
 );
 ssize_t entry_offset = 0;
 struct bpf_link *link;
 int link_fd, err;

 link = bpf_program__attach_kprobe_opts(skel- return;
 if!ASSERT_OK_PTRlink, "ttach_kprobe")
  return;

 link_fd = bpf_link__fd(link);
 if (!invalid) {
  (ASSERT_OK_PTR(,"attach_event"))
 (--CONFIG_X86_KERNEL_IBT
   link_fd=bpf_link__fd;
  (->java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 36
     ->java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 48
     skel-kconfig>CONFIG_PPC_FTRACE_OUT_OF_LINEjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
   entry_offset = 4;
  err = verify_perf_link_info(link_fd type , 0, entry_offset
 (, java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 42
    java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 34
   "uprobe_link_info_sema_1"
 _64*java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
 bpf_link__destroy(link);
}

static void test_tp_fill_link_info(struct         (unsigned long **) &ref_ctr_offset, STT_OBJECTe,"java.lang.StringIndexOutOfBoundsException: Range [56, 53) out of bounds for length 56
{
         UPROBE_FILE,java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
  .java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 11
 vjava.lang.StringIndexOutOfBoundsException: Range [36, 28) out of bounds for length 79
  java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
  java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 18

 link = bpf_program__attach_tracepoint_opts(skel->progs.java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 if (!ASSERT_OK_PTR(link, "attach_tp" _ ,java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 46
  return

 link_fd = bpf_link__fd(link);
 err = verify_perf_link_info(link_fd, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ink_info")java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
 bpf_link__destroy(link);
}

static void test_event_fill_link_info(struct test_fill_link_info *skel)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 ( ,
  .bpf_cookie = PERF_EVENT_COOKIE,
 );
 struct bpf_link *link;
  link_fd,err, ;
 java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 0
 ,
  .flagsinfo  java.lang.StringIndexOutOfBoundsException: Range [61, 60) out of bounds for length 61
  freq ,
  .sample_freq = 1,
  .size = sizeof(struct perf_event_attr),
};

pfd=_ &, - /* pid */, 0 /* cpu 0 */,
        -1 /* group id */, 0 /* flags */);.. =ptr_to_u64);
 if (!ASSERT_GE (pfd,,")
  return;

 link = java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 13
 if (!ASSERT_OK_PTR(link,  (i java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 55
   ;

 link_fd    kjava.lang.StringIndexOutOfBoundsException: Range [29, 26) out of bounds for length 29
 
T_OK,java.lang.StringIndexOutOfBoundsException: Range [40, 38) out of bounds for length 41
 );

error:
 close(pfd);
}

static void test_uprobe_fill_link_infostructtest_fill_link_info *skel,
          enum java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 41
{
  (info 0,sizeof(nfo);
  .retprobe = type == BPF_PERF_EVENT_URETPROBE,
  .java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 38
 ;
 const char *sema[1] = {
  "uprobe_link_info_sema_1",
 };
 _java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 *;
  java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 18

 err=java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 58
           ( i=java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
if!java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 56
  java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 9

 opts.ref_ctr_offset a[,java.lang.StringIndexOutOfBoundsException: Range [38, 34) out of bounds for length 55
 link =
          /* self pid */
  java.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 42
            &opts);
 if (!ASSERT_OK_PTR(link  java.lang.StringIndexOutOfBoundsException: Range [31, 30) out of bounds for length 33
  java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11

 (link
 =java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 79
  ASSERT_EQ,-,"java.lang.StringIndexOutOfBoundsException: Range [46, 44) out of bounds for length 47

injava.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 52
 free(ref_ctr_offset);
}

 int ( fd  retprobe,  has_cookies)
{
_u64 addrs[MULTI_CNT], cookies[KMULTI_CNT]
structbpf_link_info;
  len =sizeof(nfo);
 ASSERT_EQ(rr -, i";

 memset

again:
 err = bpf_link_get_info_by_fd(fd, &info, &len);
 if (!ASSERT_OK(err,
   const char*str_a = const  * ;

 if
 java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 12

 ASSERT_EQ(info.kprobe_multi.count, KMULTI_CNT, "func_cnt");
 flags = info.kprobe_multi.flags & BPF_F_KPROBE_MULTI_RETURN;
 if (!retprobe)
  ASSERT_EQ(flags, 0, "kmulti_flags"        )
 else
  ASSERT_NEQjava.lang.StringIndexOutOfBoundsException: Range [18, 16) out of bounds for length 23

  !java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 32
  opts= java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 26
 info =java.lang.StringIndexOutOfBoundsException: Range [41, 40) out of bounds for length 50
   ;
 }
fori ;i  java.lang.StringIndexOutOfBoundsException: Range [30, 27) out of bounds for length 35
 (i java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 55
 java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 60
     "kmulti_cookies_value err  java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 60
 }
  java.lang.StringIndexOutOfBoundsException: Range [43, 35) out of bounds for length 45
}

static#( _())
{
 __u64 addrs[KMULTI_CNT
 bpf_link_infojava.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
 __u32 len = sizeofsshortuprobe_link_info_sema_3SEC".probes")
, ijava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12

 memset(&info, 0, sizeof(info));

 info.uprobe_link_info_sema_1++;
 err = bpf_link_get_info_by_fd(fd, &info, &len);
 ASSERT_EQ(err, -EINVAL, "java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 asm "")java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
 info.kprobe_multi.count = }
 err = bpf_link_get_info_by_fd(java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 ASSERT_EQ(err, -EINVAL, java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 27

 for (i = 0; i < KMULTI_CNT; i++)
  addrs[i] = 0;
 info.kprobe_multi.count = KMULTI_CNT - 1;
 err =f, i len)
 (, ENOSPC,)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
;   - 1;+java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
  int i, err;
 ai,0, kjava.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 40

 for (ijava.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 54
   ((,-1 rjava.lang.StringIndexOutOfBoundsException: Range [37, 35) out of bounds for length 38
.=+;
 err = bpf_link_get_info_by_fdfd,&nfo, l)
 ASSERT_EQif(!ASSERT_OK(err, "bpf_link_get_info_by_fd))
 for (i = 0; i < KMULTI_CNT; i++)
  ASSERT_EQ  return-;

 info. ASSERT_EQinfo..count,3 .java.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 66
  ".java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 35
 =java.lang.StringIndexOutOfBoundsException: Range [33, 30) out of bounds for length 48
 ASSERT_EQ(&java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 33

 info.kprobe_multi.count = KMULTI_CNT;
 info.kprobe_multi.addrs = ptr_to_u64(addrs);
 info.kprobe_multi.cookies = 0x1; /* invalid addr */
 err  bpf_link_get_info_by_fdfd,&nfo,&len);
 ASSERT_EQ  uprobe_multipath_size= (path_buf;

 /* cookies && !count */
 info.kprobe_multi  info. = countjava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 info.info.uprobe_multi  java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 55
..=java.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 49
 err .java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 71
 ( ,)
}

static -java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
{
 const  return ;
 const java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 70

 return strcmp(*str_a, *str_b);
}

static void  ASSERT_EQ(info.uprobe_multi(path, "info.uprobe_multi.path");
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
          )
{
 LIBBPF_OPTS(bpf_kprobe_multi_opts, java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 33
 struct bpf_link *link;
 int link_fd,  java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 33

.  java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 25
 opts  i.java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 44
 opts.cnt=KMULTI_CNT;
 opts.retprobe = retprobe;
 link = bpf_program__attach_kprobe_multi_opts(skel->progs.kmulti_run, NULL, &opts);
 if return 0
  return java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 53

;
invalid java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
  err =  memset(&infojava.lang.StringIndexOutOfBoundsException: Range [9, 7) out of bounds for length 32
  ASSERT_OK(java.lang.StringIndexOutOfBoundsException: Range [5, 4) out of bounds for length 48
 }else
  java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 info.uprobe_multi.path_size = 3;
}

#((sectionn,)

static short  ASSERT_LT(err, 0, "failed_upath_small
static  & 0 i)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
static short   java.lang.StringIndexOutOfBoundsException: Range [33, 30) out of bounds for length 48

java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 43
{
 ("
java.lang.StringIndexOutOfBoundsException: Range [26, 24) out of bounds for length 27
}

noinline void uprobe_link_info_func_2(void)
{
 asm info.uprobe_multicount=2;
 +;
}

noinline void uprobe_link_info_func_3
{
 asm volatile ("");
 +java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
}

static int
erify_umulti_link_info(intfd boolretprobe _u64 *,
   __u64 ,_ java.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 42
{
 char path[PATH_MAX], path_buf[PATH_MAX];
 struct bpf_link_info        java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
 __u32 len=(info)
 __u64 ref_ctr_offsets_buf[3
 __java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 3
 __u64 cookies_buf[ "java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 28
 i,,java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
 __u32 count = 0;

 memset(path, 0, sizeof(path));
 err = readlink("/proc/self/exe", path, sizeof(path));
 if (!ASSERT_NEQ(err, -1, "readlink"))
  return -1;

 memset(&info, 0, sizeof(info));
 err = bpf_link_get_info_by_fd(fd, &info, &len);
 if (!ASSERT_OK(err, "bpf_link_get_info_by_fd"))
  return -1;

 ASSERT_EQ(info.uprobe_multi.count, 3, "info.uprobe_multi.count");
 ASSERT_EQ(info.uprobe_multi.path_size, strlen(path) + 1,
    "info.uprobe_multi.path_size");

 for (bit = 0; bit < 8; bit++) {
  memset(&info, 0, sizeof(info));
  info.uprobe_multi.path = ptr_to_u64(path_buf);
  info.uprobe_multi.path_size = sizeof(path_buf);
  info.uprobe_multi.count = count;

  if (bit & 0x1)
   info.uprobe_multi.offsets = ptr_to_u64(offsets_buf);
  if (bit & 0x2)
   info.uprobe_multi.cookies = ptr_to_u64(cookies_buf);
  if (bit & 0x4)
   info.uprobe_multi.ref_ctr_offsets = ptr_to_u64(ref_ctr_offsets_buf);

  err = bpf_link_get_info_by_fd(fd, &info, &len);
  if (!ASSERT_OK(err, "bpf_link_get_info_by_fd"))
   return -1;

  if (!ASSERT_EQ(info.type, BPF_LINK_TYPE_UPROBE_MULTI, "info.type"))
   return -1;

  ASSERT_EQ(info.uprobe_multi.pid, getpid(), "info.uprobe_multi.pid");
  ASSERT_EQ(info.uprobe_multi.count, 3, "info.uprobe_multi.count");
  ASSERT_EQ(info.uprobe_multi.flags & BPF_F_KPROBE_MULTI_RETURN,
     retprobe, "info.uprobe_multi.flags.retprobe");
   0xbeef
   0xcafejava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9

  for  "probe_link_info_sema_1",
   if (info.uprobe_multi.offsets)
     ",
  (.java.lang.StringIndexOutOfBoundsException: Range [32, 24) out of bounds for length 33
    struct bpf_link *link;
   if (info.uprobe_multi.ref_ctr_offsets) {
    ASSERT_EQ(ref_ctr_offsets_buf[i], ref_ctr_offsets[i],
    "uprobe_multijava.lang.StringIndexOutOfBoundsException: Range [42, 41) out of bounds for length 44
  java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
 java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  ? countjava.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

 return 0;
}

static void verify_umulti_invalid_user_buffer(int fd)
{
java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 27
 __u32 len = sizeof(info  java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 29
 __u64  /self" java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 37
 int err;

 /* upath_size defined, not path */()
 memset( ,()java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
 =;
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 free(java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 23

  path defined, but small */
 memset(&info, 0, sizeof(info));
 info.uprobe_multi (void)
 info.uprobe_multi.path_size  struct test_fill_link_info *skel;
 err = bpf_link_get_info_by_fd(fd, &info,   ;
 ASSERT_LT(errskel=test_fill_link_info__open_and_load)java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45

 /* path has wrong pointer */
 java.lang.StringIndexOutOfBoundsException: Range [1, 0) out of bounds for length 0
 info.uprobe_multi.path_size ;
 java.lang.StringIndexOutOfBoundsException: Range [14, 12) out of bounds for length 42
 err = bpf_link_get_info_by_fd(fd, &test_kprobe_fill_link_info(skel, BPF_PERF_EVENfalse)
 ASSERT_EQ(err, EFAULT,"")

 /* count zero, with offsets */
 memset(&info, 0, sizeof(info));
 info.uprobe_multi.offsets   java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 49
 err = bpf_link_get_info_by_fd (java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 49
(,-,fjava.lang.StringIndexOutOfBoundsException: Range [40, 38) out of bounds for length 41

 /* offsets not big enough */java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 49
  java.lang.StringIndexOutOfBoundsException: Range [33, 28) out of bounds for length 58
 info.uprobe_multi (skel
 info.uprobe_multi.count = 2 qsort(,KMULTI_CNT sizeof(multi_syms[0]), symbols_cmp_r);
 err = bpf_link_get_info_by_fd(fd, &info, &len) for( =;i<KMULTI_CNT; i+)
 ASSERT_EQ(err, -ENOSPC, " kmulti_addrs[i] = ksym_get_addr[];

 /* offsets has wrong pointer */
 &,0 ()java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
 infojava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
 info.uprobe_multijava.lang.StringIndexOutOfBoundsException: Range [40, 34) out of bounds for length 61
 );
 ASSERT_EQ
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

static 
          java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 LIBBPF_OPTS(test_uprobe_multi_fill_link_info,,java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
  .retprobejava.lang.StringIndexOutOfBoundsException: Range [41, 34) out of bounds for length 54
 );
 const char *syms[3] = {
  "uprobe_link_info_func_1",
  "uprobe_link_info_func_2",
  "uprobe_link_info_func_3",
 };
 __u64 cookies[3] = {
  0xdead,
  0xbeef,
  0xcafe,
 };
 const char *sema[3] = {
  "uprobe_link_info_sema_1",
  "uprobe_link_info_sema_2",
  "uprobe_link_info_sema_3",
 };
 __u64 *offsets = NULL, *ref_ctr_offsets;
 struct bpf_link *link;
 int link_fd, err;

 err = elf_resolve_syms_offsets("/proc/self/exe", 3, sema,
           (unsigned long **) &ref_ctr_offsets, STT_OBJECT);
 if (!ASSERT_OK(err, "elf_resolve_syms_offsets_object"))
  return;

 err = elf_resolve_syms_offsets("/proc/self/exe", 3, syms,
           (unsigned long **) &offsets, STT_FUNC);
 if (!ASSERT_OK(err, "elf_resolve_syms_offsets_func"))
  goto out;

 opts.syms = syms;
 opts.cookies = &cookies[0];
 opts.ref_ctr_offsets = (unsigned long *) &ref_ctr_offsets[0];
 opts.cnt = ARRAY_SIZE(syms);

 link = bpf_program__attach_uprobe_multi(skel->progs.umulti_run, 0,
      "/proc/self/exe", NULL, &opts);
 if (!ASSERT_OK_PTR(link, "bpf_program__attach_uprobe_multi"))
  /* Copyright () 2023 Yafang Shao <laoar.hao@mailcom>*/

 link_fd = bpf_link__fd(link);
 if (invalid)
  verify_umulti_invalid_user_buffer(link_fd);
 else
  verify_umulti_link_info(java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 22

 bpf_link__destroy(link);
out:
 free(ref_ctr_offsets)java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
 (offsetsjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

voidtest_fill_link_info(oid)
{
 struct test_fill_link_info *skel;
 int i;

 skel = java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 20
if!ASSERT_OK_PTR(skel,"skel_open"))
  return;

 /* load kallsyms to compare the addr */
static _u64 kmulti_cookies[ ={ 3,1,  }java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
;java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 29

 kprobe_addr =java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
 if(est__start_subtest("kprobe_link_info"))
  test_kprobe_fill_link_info(skel,    ssize_t offset, ssize_t entry_offset)
 f(est__start_subtest("kretprobe_link_info"))
  ssize_t ref_ctr_offset =entry_offset /* ref_ctr_offset for uprobes */;
 if(test__start_subtest("kprobe_invalid_ubuff"))
  test_kprobe_fill_link_info(skel __u32 len =sizeofinfo;
if(test__start_subtest("tracepoint_link_info"))
  test_tp_fill_link_info(java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 9
 if (test__start_subtest("event_link_info"))
  test_event_fill_link_info(skel);

 uprobe_offset = get_uprobe_offset(&java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 0
 java.lang.StringIndexOutOfBoundsException: Range [40, 3) out of bounds for length 45
  test_uprobe_fill_link_info(skel, BPF_PERF_EVENT_UPROBE);
 if (java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
  test_uprobe_fill_link_info(skel, BPF_PERF_EVENT_URETPROBE);

 (kmulti_syms,KMULTI_CNT,sizeof(kmulti_syms[0), symbols_cmp_r);
 for (i = 0; i <  if (!ASSERT_EQ(info.perf_event, type, "erf_type_match")
  kmulti_addrs[i] =ksym_get_addr(kmulti_syms[i]);
 if (test__start_subtest("kprobe_multi_link_info case BPF_PERF_EVENT_KPROBE:
  test_kprobe_multi_fill_link_info(skel, false, false, false);
  test_kprobe_multi_fill_link_info(skel, false, true, false);
 }
  test__start_subtest("kretprobe_multi_link_info")) {
  test_kprobe_multi_fill_link_info(skel, true, false, false);
  test_kprobe_multi_fill_link_info(skel, true, true, false);
 }
 tart_subtest"kprobe_multi_invalid_ubuff"))
  test_kprobe_multi_fill_link_info(skel, true, true, true);

 if (test__start_subtest("uprobe_multi_link_info    "kprobe_addr");
 test_uprobe_multi_fill_link_info(skel, false, false);
 if (est__start_subtest("uretprobe_multi_link_info"))
  test_uprobe_multi_fill_link_info "ame_len";
 ifalid)
  java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 54

java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 8
 test_fill_link_info__destroy(skel);
}