attach to multiple identical probes

There were two problems keeping bpftrace from attaching to multiple
identical probes in the same script: the first one was in our IR code
generation, where we were creating multiple sections with the same name
(since the secion name is determined by the probe's name). Since
sections must have unique names, LLVM was not able to translate our IR
to BPF. This was resolved by appending a `_#` to the section's name.

The second problem was attaching to that probe: we can't use the same
event name multiple times in "kprobe_events". bcc already handles
multiple probes coming from *different* processes, since it also
includes the PID on the event name. The solution was similar, we append
`_#` to the event name before sending it to bcc. This required some
strucutral changes, like keeping the `#` (index) in the AST Probe nodes
and calling `BPFTrace::add_probe` during codegen instead of during
semantic analysis (otherwise we wouldn't have the index for our Probes).

Fixes: https://github.com/iovisor/bpftrace/issues/97

src/ast/ast.cpp

@@ -124,6 +124,15 @@ std::string AttachPoint::name(const std::string &attach_point) const
   return n;
 }
 
+int AttachPoint::index(std::string name) {
+  if (index_.count(name) == 0) return 0;
+  return index_[name];
+}
+
+void AttachPoint::set_index(std::string name, int index) {
+  index_[name] = index;
+}
+
 std::string Probe::name() const
 {
   std::string n = "";
@@ -141,5 +150,13 @@ std::string Probe::name() const
   return n.substr(0, n.size()-1);
 }
 
+int Probe::index() {
+  return index_;
+}
+
+void Probe::set_index(int index) {
+  index_ = index;
+}
+
 } // namespace ast
 } // namespace bpftrace

src/ast/ast.h

@@ -2,6 +2,7 @@
 
 #include <string>
 #include <vector>
+#include <map>
 
 #include "types.h"
 
@@ -193,6 +194,11 @@ public:
 
   void accept(Visitor &v) override;
   std::string name(const std::string &attach_point) const;
+
+  int index(std::string name);
+  void set_index(std::string name, int index);
+private:
+  std::map<std::string, int> index_;
 };
 using AttachPointList = std::vector<AttachPoint *>;
 
@@ -208,6 +214,11 @@ public:
   void accept(Visitor &v) override;
   std::string name() const;
   bool need_expansion = false;	// must build a BPF program per wildcard match
+
+  int index();
+  void set_index(int index);
+private:
+  int index_ = 0;
 };
 using ProbeList = std::vector<Probe *>;
 

src/ast/codegen_llvm.cpp

@@ -885,7 +885,8 @@ void CodegenLLVM::visit(Probe &probe)
   if (probe.need_expansion == false) {
     // build a single BPF program pre-wildcards
     Function *func = Function::Create(func_type, Function::ExternalLinkage, probe.name(), module_.get());
-    func->setSection("s_" + probe.name());
+    probe.set_index(getNextIndexForProbe(probe.name()));
+    func->setSection(getSectionNameForProbe(probe.name(), probe.index()));
     BasicBlock *entry = BasicBlock::Create(module_->getContext(), "entry", func);
     b_.SetInsertPoint(entry);
 
@@ -930,8 +931,10 @@ void CodegenLLVM::visit(Probe &probe)
         printf_id_ = starting_printf_id_;
         time_id_ = starting_time_id_;
         probefull_ = attach_point->name(match);
-        Function *func = Function::Create(func_type, Function::ExternalLinkage, attach_point->name(match), module_.get());
-        func->setSection("s_" + attach_point->name(match));
+        int index = getNextIndexForProbe(probe.name());
+        attach_point->set_index(match, index);
+        Function *func = Function::Create(func_type, Function::ExternalLinkage, probefull_, module_.get());
+        func->setSection(getSectionNameForProbe(probefull_, index));
         BasicBlock *entry = BasicBlock::Create(module_->getContext(), "entry", func);
         b_.SetInsertPoint(entry);
 
@@ -947,6 +950,7 @@ void CodegenLLVM::visit(Probe &probe)
       }
     }
   }
+  bpftrace_.add_probe(probe);
 }
 
 void CodegenLLVM::visit(Program &program)
@@ -955,6 +959,18 @@ void CodegenLLVM::visit(Program &program)
     probe->accept(*this);
 }
 
+int CodegenLLVM::getNextIndexForProbe(std::string probe_name) {
+  if (next_probe_index_.count(probe_name) == 0)
+    next_probe_index_[probe_name] = 1;
+  int index = next_probe_index_[probe_name];
+  next_probe_index_[probe_name] += 1;
+  return index;
+}
+
+std::string CodegenLLVM::getSectionNameForProbe(std::string probe_name, int index) {
+  return "s_" + probe_name + "_" + std::to_string(index);
+}
+
 AllocaInst *CodegenLLVM::getMapKey(Map &map)
 {
   AllocaInst *key;

src/ast/codegen_llvm.h

@@ -47,6 +47,8 @@ public:
   void visit(Program &program) override;
   AllocaInst *getMapKey(Map &map);
   AllocaInst *getHistMapKey(Map &map, Value *log2);
+  int         getNextIndexForProbe(std::string probe_name);
+  std::string getSectionNameForProbe(std::string probe_name, int index);
   Value      *createLogicalAnd(Binop &binop);
   Value      *createLogicalOr(Binop &binop);
 
@@ -67,6 +69,7 @@ private:
   BPFtrace &bpftrace_;
   std::string probefull_;
   std::string path_;
+  std::map<std::string, int> next_probe_index_;
 
   std::map<std::string, Value *> variables_;
   int printf_id_ = 0;

src/ast/semantic_analyser.cpp

@@ -731,9 +731,6 @@ void SemanticAnalyser::visit(Probe &probe)
     stmt->accept(*this);
   }
 
-  if (is_final_pass()) {
-    bpftrace_.add_probe(probe);
-  }
 }
 
 void SemanticAnalyser::visit(Program &program)

src/attached_probe.cpp

@@ -156,18 +156,19 @@ std::string AttachedProbe::eventprefix() const
 std::string AttachedProbe::eventname() const
 {
   std::ostringstream offset_str;
+  std::string index_str = "_" + std::to_string(probe_.index);
   switch (probe_.type)
   {
     case ProbeType::kprobe:
     case ProbeType::kretprobe:
-      return eventprefix() + probe_.attach_point;
+      return eventprefix() + probe_.attach_point + index_str;
     case ProbeType::uprobe:
     case ProbeType::uretprobe:
     case ProbeType::usdt:
       offset_str << std::hex << offset();
-      return eventprefix() + sanitise(probe_.path) + "_" + offset_str.str();
+      return eventprefix() + sanitise(probe_.path) + "_" + offset_str.str() + index_str;
     case ProbeType::tracepoint:
-      return probe_.attach_point;
+      return probe_.attach_point + index_str;
     default:
       abort();
   }

src/bpftrace.cpp

@@ -89,6 +89,8 @@ int BPFtrace::add_probe(ast::Probe &p)
       probe.name = attach_point->name(func);
       probe.freq = attach_point->freq;
       probe.loc = 0;
+      probe.index = attach_point->index(func) > 0 ? 
+          attach_point->index(func) : p.index();
       probes_.push_back(probe);
     }
   }
@@ -307,9 +309,10 @@ std::unique_ptr<AttachedProbe> BPFtrace::attach_probe(Probe &probe, const BpfOrc
   // and the name builtin, which must be expanded into separate programs per
   // probe), else try to find a the program based on the original probe name
   // that includes wildcards.
-  auto func = bpforc.sections_.find("s_" + probe.name);
+  std::string index_str = "_" + std::to_string(probe.index);
+  auto func = bpforc.sections_.find("s_" + probe.name + index_str);
   if (func == bpforc.sections_.end())
-    func = bpforc.sections_.find("s_" + probe.orig_name);
+    func = bpforc.sections_.find("s_" + probe.orig_name + index_str);
   if (func == bpforc.sections_.end())
   {
     if (probe.name != probe.orig_name)

src/types.h

@@ -83,6 +83,7 @@ public:
 				// before wildcard expansion
   std::string name;		// full probe name
   uint64_t loc;			// for USDT probes
+  int index = 0;
   int freq;
 };
 

tests/codegen.cpp

@@ -28,8 +28,8 @@ TEST(codegen, populate_sections)
 
   // Check sections are populated
   EXPECT_EQ(bpforc->sections_.size(), 2);
-  EXPECT_EQ(bpforc->sections_.count("s_kprobe:foo"), 1);
-  EXPECT_EQ(bpforc->sections_.count("s_kprobe:bar"), 1);
+  EXPECT_EQ(bpforc->sections_.count("s_kprobe:foo_1"), 1);
+  EXPECT_EQ(bpforc->sections_.count("s_kprobe:bar_1"), 1);
 }
 
 TEST(codegen, printf_offsets)
@@ -99,7 +99,27 @@ TEST(codegen, empty_function)
   test("kprobe:f { 1; }",
 
 R"EXPECTED(; Function Attrs: norecurse nounwind readnone
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr #0 section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr #0 section "s_kprobe:f_1" {
+entry:
+  ret i64 0
+}
+
+attributes #0 = { norecurse nounwind readnone }
+)EXPECTED");
+}
+
+TEST(codegen, multiple_identical_kprobes)
+{
+  test("kprobe:f { 1; } kprobe:f { 1; }",
+
+R"EXPECTED(; Function Attrs: norecurse nounwind readnone
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr #0 section "s_kprobe:f_1" {
+entry:
+  ret i64 0
+}
+
+; Function Attrs: norecurse nounwind readnone
+define i64 @"kprobe:f.1"(i8* nocapture readnone) local_unnamed_addr #0 section "s_kprobe:f_2" {
 entry:
   ret i64 0
 }
@@ -118,7 +138,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -153,7 +173,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_key" = alloca i64, align 8
   %str = alloca [64 x i8], align 1
@@ -199,7 +219,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca [24 x i8], align 8
@@ -237,7 +257,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca [128 x i8], align 1
@@ -281,7 +301,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -317,7 +337,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -357,7 +377,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -397,7 +417,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_val" = alloca i64, align 8
   %"@y_key" = alloca i64, align 8
@@ -448,7 +468,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_val" = alloca i64, align 8
   %"@y_key" = alloca i64, align 8
@@ -499,7 +519,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -535,7 +555,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -571,7 +591,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -607,7 +627,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -643,7 +663,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_key" = alloca i64, align 8
   %comm = alloca [16 x i8], align 1
@@ -682,7 +702,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_val" = alloca i64, align 8
   %"@y_key" = alloca i64, align 8
@@ -743,7 +763,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -785,7 +805,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -827,7 +847,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -869,7 +889,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"tracepoint:syscalls:sys_enter_nanosleep"(i8* nocapture readnone) local_unnamed_addr section "s_tracepoint:syscalls:sys_enter_nanosleep" {
+define i64 @"tracepoint:syscalls:sys_enter_nanosleep"(i8* nocapture readnone) local_unnamed_addr section "s_tracepoint:syscalls:sys_enter_nanosleep_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -904,7 +924,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"tracepoint:syscalls:sys_enter_nanoslee*"(i8*) local_unnamed_addr section "s_tracepoint:syscalls:sys_enter_nanoslee*" {
+define i64 @"tracepoint:syscalls:sys_enter_nanoslee*"(i8*) local_unnamed_addr section "s_tracepoint:syscalls:sys_enter_nanoslee*_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -946,7 +966,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"tracepoint:syscalls:sys_enter_nanosleep"(i8* nocapture readnone) local_unnamed_addr section "s_tracepoint:syscalls:sys_enter_nanosleep" {
+define i64 @"tracepoint:syscalls:sys_enter_nanosleep"(i8* nocapture readnone) local_unnamed_addr section "s_tracepoint:syscalls:sys_enter_nanosleep_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -981,7 +1001,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca [16 x i8], align 8
@@ -1034,7 +1054,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_val" = alloca i64, align 8
   %"@y_key" = alloca i64, align 8
@@ -1095,7 +1115,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1166,7 +1186,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1219,7 +1239,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1266,7 +1286,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1322,7 +1342,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1377,7 +1397,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1426,7 +1446,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key2" = alloca i64, align 8
@@ -1499,7 +1519,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key2" = alloca i64, align 8
@@ -1572,7 +1592,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_key" = alloca i64, align 8
   %arg0 = alloca i64, align 8
@@ -1618,7 +1638,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_key1" = alloca i64, align 8
   %"@x_val" = alloca i64, align 8
@@ -1662,7 +1682,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %Foo.l = alloca i64, align 8
   %Foo.c = alloca i8, align 1
@@ -1712,7 +1732,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %perfdata = alloca [8 x i8], align 8
   %1 = getelementptr inbounds [8 x i8], [8 x i8]* %perfdata, i64 0, i64 0
@@ -1743,7 +1763,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @BEGIN(i8* nocapture readnone) local_unnamed_addr section "s_BEGIN" {
+define i64 @BEGIN(i8* nocapture readnone) local_unnamed_addr section "s_BEGIN_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1763,7 +1783,7 @@ entry:
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %perfdata = alloca [27 x i8], align 8
   %1 = getelementptr inbounds [27 x i8], [27 x i8]* %perfdata, i64 0, i64 0
@@ -1802,7 +1822,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @BEGIN(i8* nocapture readnone) local_unnamed_addr section "s_BEGIN" {
+define i64 @BEGIN(i8* nocapture readnone) local_unnamed_addr section "s_BEGIN_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1822,7 +1842,7 @@ entry:
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %perfdata = alloca [11 x i8], align 8
   %1 = getelementptr inbounds [11 x i8], [11 x i8]* %perfdata, i64 0, i64 0
@@ -1856,7 +1876,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @BEGIN(i8* nocapture readnone) local_unnamed_addr section "s_BEGIN" {
+define i64 @BEGIN(i8* nocapture readnone) local_unnamed_addr section "s_BEGIN_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -1876,7 +1896,7 @@ entry:
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %perfdata = alloca [11 x i8], align 8
   %1 = getelementptr inbounds [11 x i8], [11 x i8]* %perfdata, i64 0, i64 0
@@ -1910,7 +1930,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8*) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %perfdata = alloca [16 x i8], align 8
   %1 = getelementptr inbounds [16 x i8], [16 x i8]* %perfdata, i64 0, i64 0
@@ -1945,7 +1965,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_val" = alloca i64, align 8
   %"@y_key" = alloca i64, align 8
@@ -2008,7 +2028,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_key" = alloca i64, align 8
   %lookup_elem_val = alloca [64 x i8], align 1
@@ -2087,7 +2107,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2131,7 +2151,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@y_key" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2176,7 +2196,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2217,7 +2237,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2268,7 +2288,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2319,7 +2339,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2354,7 +2374,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2389,7 +2409,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2427,7 +2447,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_key" = alloca i64, align 8
   %buf = alloca [64 x i8], align 1
@@ -2485,7 +2505,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2541,7 +2561,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2596,7 +2616,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2652,7 +2672,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2707,7 +2727,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2769,7 +2789,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@mystr_key" = alloca i64, align 8
   %Foo.str = alloca i64, align 8
@@ -2828,7 +2848,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@mystr_key" = alloca i64, align 8
   %Foo.str = alloca [32 x i8], align 1
@@ -2877,7 +2897,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2933,7 +2953,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -2995,7 +3015,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -3051,7 +3071,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@foo_val" = alloca [12 x i8], align 1
   %"@foo_key" = alloca i64, align 8
@@ -3098,7 +3118,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@x_val" = alloca i64, align 8
   %"@x_key" = alloca i64, align 8
@@ -3202,7 +3222,7 @@ declare i64 @llvm.bpf.pseudo(i64, i64) #0
 ; Function Attrs: argmemonly nounwind
 declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
 
-define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f" {
+define i64 @"kprobe:f"(i8* nocapture readnone) local_unnamed_addr section "s_kprobe:f_1" {
 entry:
   %"@str_key" = alloca i64, align 8
   %lookup_elem_val = alloca [32 x i8], align 1