diff --git a/blazesym b/blazesym
index 976c46bc..1e1f48c1 160000
--- a/blazesym
+++ b/blazesym
@@ -1 +1 @@
-Subproject commit 976c46bcd06a32a99335d63932b0194fb2122dd2
+Subproject commit 1e1f48c18da9416e1d4c35ec9bce4ed77019b109
diff --git a/bpftool b/bpftool
index cdd0b425..8ec897a0 160000
--- a/bpftool
+++ b/bpftool
@@ -1 +1 @@
-Subproject commit cdd0b425fce958e3d02424c9d0296e6d0f7e323f
+Subproject commit 8ec897a0cd357fe9e13eec7d27d43e024891746b
diff --git a/examples/rust/Cargo.lock b/examples/rust/Cargo.lock
index e56e8125..0c9e5270 100644
--- a/examples/rust/Cargo.lock
+++ b/examples/rust/Cargo.lock
@@ -19,18 +19,18 @@ dependencies = [
 
 [[package]]
 name = "ansi_term"
-version = "0.11.0"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
 dependencies = [
  "winapi",
 ]
 
 [[package]]
 name = "anyhow"
-version = "1.0.45"
+version = "1.0.57"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ee10e43ae4a853c0a3591d4e2ada1719e553be18199d9da9d4a83f5927c2f5c7"
+checksum = "08f9b8508dccb7687a1d6c4ce66b2b0ecef467c94667de27d8d7fe1f8d2a9cdc"
 
 [[package]]
 name = "atty"
@@ -45,9 +45,9 @@ dependencies = [
 
 [[package]]
 name = "autocfg"
-version = "1.0.1"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
 [[package]]
 name = "bitflags"
@@ -55,6 +55,16 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "blazesym"
+version = "0.1.0"
+source = "git+https://github.com/ThinkerYzu1/blazesym.git#1e1f48c18da9416e1d4c35ec9bce4ed77019b109"
+dependencies = [
+ "cbindgen",
+ "nix 0.24.1",
+ "regex",
+]
+
 [[package]]
 name = "cargo-platform"
 version = "0.1.2"
@@ -77,11 +87,30 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "cbindgen"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b6d248e3ca02f3fbfabcb9284464c596baec223a26d91bbf44a5a62ddb0d900"
+dependencies = [
+ "clap 3.1.18",
+ "heck 0.4.0",
+ "indexmap",
+ "log",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_json",
+ "syn",
+ "tempfile",
+ "toml",
+]
+
 [[package]]
 name = "cc"
-version = "1.0.72"
+version = "1.0.73"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "22a9137b95ea06864e018375b72adfb7db6e6f68cfc8df5a04d00288050485ee"
+checksum = "2fff2a6927b3bb87f9595d67196a70493f627687a71d87a0d692242c33f58c11"
 
 [[package]]
 name = "cfg-if"
@@ -91,54 +120,91 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clap"
-version = "2.33.3"
+version = "2.34.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
+checksum = "a0610544180c38b88101fecf2dd634b174a62eef6946f84dfc6a7127512b381c"
 dependencies = [
  "ansi_term",
  "atty",
  "bitflags",
- "strsim",
- "textwrap",
+ "strsim 0.8.0",
+ "textwrap 0.11.0",
  "unicode-width",
  "vec_map",
 ]
 
+[[package]]
+name = "clap"
+version = "3.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2dbdf4bdacb33466e854ce889eee8dfd5729abf7ccd7664d0a2d60cd384440b"
+dependencies = [
+ "atty",
+ "bitflags",
+ "clap_derive",
+ "clap_lex",
+ "indexmap",
+ "lazy_static",
+ "strsim 0.10.0",
+ "termcolor",
+ "textwrap 0.15.0",
+]
+
+[[package]]
+name = "clap_derive"
+version = "3.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "25320346e922cffe59c0bbc5410c8d8784509efb321488971081313cb1e1a33c"
+dependencies = [
+ "heck 0.4.0",
+ "proc-macro-error",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "clap_lex"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a37c35f1112dad5e6e0b1adaff798507497a18fceeb30cceb3bae7d1427b9213"
+dependencies = [
+ "os_str_bytes",
+]
+
 [[package]]
 name = "crc32fast"
-version = "1.2.1"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81156fece84ab6a9f2afdb109ce3ae577e42b1228441eded99bd77f627953b1a"
+checksum = "b540bd8bc810d3885c6ea91e2018302f68baba2129ab3e88f32389ee9370880d"
 dependencies = [
  "cfg-if",
 ]
 
 [[package]]
 name = "ctrlc"
-version = "3.2.1"
+version = "3.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a19c6cedffdc8c03a3346d723eb20bd85a13362bb96dc2ac000842c6381ec7bf"
+checksum = "b37feaa84e6861e00a1f5e5aa8da3ee56d605c9992d33e082786754828e20865"
 dependencies = [
- "nix 0.23.0",
+ "nix 0.24.1",
  "winapi",
 ]
 
 [[package]]
-name = "derivative"
-version = "2.2.0"
+name = "fastrand"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
+checksum = "c3fcf0cee53519c866c09b5de1f6c56ff9d647101f81c1964fa632e148896cdf"
 dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "instant",
 ]
 
 [[package]]
 name = "flate2"
-version = "1.0.22"
+version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e6988e897c1c9c485f43b47a529cef42fde0547f9d8d41a7062518f1d8fc53f"
+checksum = "b39522e96686d38f4bc984b9198e3a0613264abaebaff2c5c918bfa6b6da09af"
 dependencies = [
  "cfg-if",
  "crc32fast",
@@ -147,15 +213,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "getrandom"
-version = "0.2.3"
+name = "hashbrown"
+version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi",
-]
+checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
 
 [[package]]
 name = "heck"
@@ -166,6 +227,12 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "heck"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2540771e65fc8cb83cd6e8a237f70c319bd5c29f78ed1084ba5d50eeac86f7f9"
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -175,11 +242,30 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "indexmap"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f647032dfaa1f8b6dc29bd3edb7bbef4861b8b8007ebb118d6db284fd59f6ee"
+dependencies = [
+ "autocfg",
+ "hashbrown",
+]
+
+[[package]]
+name = "instant"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "itoa"
-version = "0.4.8"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b71991ff56294aa922b450139ee08b3bfc70982c6b2c7562771375cf73542dd4"
+checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d"
 
 [[package]]
 name = "lazy_static"
@@ -201,7 +287,7 @@ dependencies = [
  "regex",
  "scroll",
  "scroll_derive",
- "semver 1.0.4",
+ "semver 1.0.9",
  "serde",
  "serde_json",
  "structopt",
@@ -217,7 +303,7 @@ checksum = "87d1f46d8d976bba68a9b772138e2307cfd7432bf66f3e1c83b3944e83ab9002"
 dependencies = [
  "bitflags",
  "libbpf-sys",
- "nix 0.22.0",
+ "nix 0.22.3",
  "num_enum",
  "strum_macros",
  "thiserror",
@@ -236,15 +322,24 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.107"
+version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fbe5e23404da5b4f555ef85ebed98fb4083e55a00c317800bc2a50ede9f3d219"
+checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+
+[[package]]
+name = "log"
+version = "0.4.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+dependencies = [
+ "cfg-if",
+]
 
 [[package]]
 name = "memchr"
-version = "2.4.1"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"
 
 [[package]]
 name = "memmap2"
@@ -257,28 +352,27 @@ dependencies = [
 
 [[package]]
 name = "memoffset"
-version = "0.6.4"
+version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59accc507f1338036a0477ef61afdae33cde60840f4dfe481319ce3ad116ddf9"
+checksum = "5aa361d4faea93603064a027415f07bd8e1d5c88c9fbf68bf56a285428fd79ce"
 dependencies = [
  "autocfg",
 ]
 
 [[package]]
 name = "miniz_oxide"
-version = "0.4.4"
+version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a92518e98c078586bc6c934028adcca4c92a53d6a958196de835170a01d84e4b"
+checksum = "d2b29bd4bc3f33391105ebee3589c19197c4271e3e5a9ec9bfe8127eeff8f082"
 dependencies = [
  "adler",
- "autocfg",
 ]
 
 [[package]]
 name = "nix"
-version = "0.22.0"
+version = "0.22.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1e25ee6b412c2a1e3fcb6a4499a5c1bfe7f43e014bdce9a6b6666e5aa2d187"
+checksum = "e4916f159ed8e5de0082076562152a76b7a1f64a01fd9d1e0fea002c37624faf"
 dependencies = [
  "bitflags",
  "cc",
@@ -289,12 +383,11 @@ dependencies = [
 
 [[package]]
 name = "nix"
-version = "0.23.0"
+version = "0.24.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f305c2c2e4c39a82f7bf0bf65fb557f9070ce06781d4f2454295cc34b1c43188"
+checksum = "8f17df307904acd05aa8e32e97bb20f2a0df1728bbc2d771ae8f9a90463441e9"
 dependencies = [
  "bitflags",
- "cc",
  "cfg-if",
  "libc",
  "memoffset",
@@ -302,19 +395,18 @@ dependencies = [
 
 [[package]]
 name = "num_enum"
-version = "0.5.4"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f9bd055fb730c4f8f4f57d45d35cd6b3f0980535b056dc7ff119cee6a66ed6f"
+checksum = "cf5395665662ef45796a4ff5486c5d41d29e0c09640af4c5f17fd94ee2c119c9"
 dependencies = [
- "derivative",
  "num_enum_derive",
 ]
 
 [[package]]
 name = "num_enum_derive"
-version = "0.5.4"
+version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "486ea01961c4a818096de679a8b740b26d9033146ac5291b1c98557658f8cdd9"
+checksum = "3b0498641e53dd6ac1a4f22547548caa6864cc4933784319cd1775271c5a46ce"
 dependencies = [
  "proc-macro-crate",
  "proc-macro2",
@@ -332,6 +424,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "os_str_bytes"
+version = "6.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "029d8d0b2f198229de29dca79676f2738ff952edf3fde542eb8bf94d8c21b435"
+
 [[package]]
 name = "pest"
 version = "2.1.3"
@@ -343,9 +441,9 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.22"
+version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12295df4f294471248581bc09bef3c38a5e46f1e36d6a37353621a0c6c357e1f"
+checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"
 
 [[package]]
 name = "plain"
@@ -353,17 +451,11 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
 
-[[package]]
-name = "ppv-lite86"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed0cfbc8191465bed66e1718596ee0b0b35d5ee1f41c5df2189d0fe8bde535ba"
-
 [[package]]
 name = "proc-macro-crate"
-version = "1.1.0"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ebace6889caf889b4d3f76becee12e90353f2b8c7d875534a71e5742f8f6f83"
+checksum = "e17d47ce914bf4de440332250b0edd23ce48c005f59fab39d3335866b114f11a"
 dependencies = [
  "thiserror",
  "toml",
@@ -395,76 +487,48 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.32"
+version = "1.0.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba508cc11742c0dc5c1659771673afbab7a0efab23aa17e854cbab0837ed0b43"
+checksum = "c54b25569025b7fc9651de43004ae593a75ad88543b17178aa5e1b9c4f15f56f"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
-name = "quote"
-version = "1.0.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
-dependencies = [
- "proc-macro2",
-]
-
-[[package]]
-name = "rand"
-version = "0.8.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
+name = "profile"
+version = "0.1.0"
 dependencies = [
+ "blazesym",
+ "clap 3.1.18",
+ "libbpf-cargo",
+ "libbpf-rs",
  "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
-dependencies = [
- "ppv-lite86",
- "rand_core",
+ "nix 0.24.1",
 ]
 
 [[package]]
-name = "rand_core"
-version = "0.6.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
-dependencies = [
- "getrandom",
-]
-
-[[package]]
-name = "rand_hc"
-version = "0.3.1"
+name = "quote"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
+checksum = "a1feb54ed693b93a84e14094943b84b7c4eae204c512b7ccb95ab0c66d278ad1"
 dependencies = [
- "rand_core",
+ "proc-macro2",
 ]
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.10"
+version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
+checksum = "62f25bc4c7e55e0b0b7a1d43fb893f4fa1361d0abe38b9ce4f323c2adfe6ef42"
 dependencies = [
  "bitflags",
 ]
 
 [[package]]
 name = "regex"
-version = "1.5.4"
+version = "1.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d07a8629359eb56f1e2fb1652bb04212c072a87ba68546a04065d525673ac461"
+checksum = "d83f127d94bdbcda4c8cc2e50f6f84f4b611f69c902699ca385a39c3a75f9ff1"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -473,9 +537,9 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.6.25"
+version = "0.6.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
+checksum = "49b3de9ec5dc0a3417da371aab17d729997c15010e7fd24ff707773a33bddb64"
 
 [[package]]
 name = "remove_dir_all"
@@ -488,9 +552,9 @@ dependencies = [
 
 [[package]]
 name = "ryu"
-version = "1.0.5"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
+checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695"
 
 [[package]]
 name = "scroll"
@@ -521,9 +585,9 @@ dependencies = [
 
 [[package]]
 name = "semver"
-version = "1.0.4"
+version = "1.0.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "568a8e6258aa33c13358f81fd834adb854c6f7c9468520910a9b1e8fac068012"
+checksum = "8cb243bdfdb5936c8dc3c45762a19d12ab4550cdc753bc247637d4ec35a040fd"
 
 [[package]]
 name = "semver-parser"
@@ -536,18 +600,18 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.130"
+version = "1.0.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f12d06de37cf59146fbdecab66aa99f9fe4f78722e3607577a5375d66bd0c913"
+checksum = "61ea8d54c77f8315140a05f4c7237403bf38b72704d031543aa1d16abbf517d1"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.130"
+version = "1.0.137"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7bc1a1ab1961464eae040d96713baa5a724a8152c1222492465b54322ec508b"
+checksum = "1f26faba0c3959972377d3b2d306ee9f71faee9714294e41bb777f83f88578be"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -556,9 +620,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.69"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e466864e431129c7e0d3476b92f20458e5879919a0596c6472738d9fa2d342f8"
+checksum = "9b7ce2b32a1aed03c558dc61a5cd328f15aff2dbc17daad8fb8af04d2100e15c"
 dependencies = [
  "itoa",
  "ryu",
@@ -571,13 +635,19 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
 
+[[package]]
+name = "strsim"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+
 [[package]]
 name = "structopt"
-version = "0.3.25"
+version = "0.3.26"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40b9788f4202aa75c240ecc9c15c65185e6a39ccdeb0fd5d008b98825464c87c"
+checksum = "0c6b5c64445ba8094a6ab0c3cd2ad323e07171012d9c98b0b15651daf1787a10"
 dependencies = [
- "clap",
+ "clap 2.34.0",
  "lazy_static",
  "structopt-derive",
 ]
@@ -588,7 +658,7 @@ version = "0.4.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dcb5ae327f9cc13b68763b5749770cb9e048a99bd9dfdfa58d0cf05d5f64afe0"
 dependencies = [
- "heck",
+ "heck 0.3.3",
  "proc-macro-error",
  "proc-macro2",
  "quote",
@@ -601,7 +671,7 @@ version = "0.21.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d06aaeeee809dbc59eb4556183dd927df67db1540de5be8d3ec0b6636358a5ec"
 dependencies = [
- "heck",
+ "heck 0.3.3",
  "proc-macro2",
  "quote",
  "syn",
@@ -609,29 +679,38 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.81"
+version = "1.0.95"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2afee18b8beb5a596ecb4a2dce128c719b4ba399d34126b9e4396e3f9860966"
+checksum = "fbaf6116ab8924f39d52792136fb74fd60a80194cf1b1c6ffa6453eef1c3f942"
 dependencies = [
  "proc-macro2",
  "quote",
- "unicode-xid",
+ "unicode-ident",
 ]
 
 [[package]]
 name = "tempfile"
-version = "3.2.0"
+version = "3.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
+checksum = "5cdb1ef4eaeeaddc8fbd371e5017057064af0911902ef36b39801f67cc6d79e4"
 dependencies = [
  "cfg-if",
+ "fastrand",
  "libc",
- "rand",
  "redox_syscall",
  "remove_dir_all",
  "winapi",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "textwrap"
 version = "0.11.0"
@@ -641,20 +720,26 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "textwrap"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1141d4d61095b28419e22cb0bbf02755f5e54e0526f97f1e3d1d160e60885fb"
+
 [[package]]
 name = "thiserror"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
+checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
+checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -663,9 +748,9 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.5.8"
+version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a31142970826733df8241ef35dc040ef98c679ab14d7c3e54d827099b3acecaa"
+checksum = "8d82e1a7758622a465f8cee077614c73484dac5b836c02ff6a40d5d1010324d7"
 dependencies = [
  "serde",
 ]
@@ -690,11 +775,17 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "56dee185309b50d1f11bfedef0fe6d036842e3fb77413abef29f8f8d1c5d4c1c"
 
+[[package]]
+name = "unicode-ident"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d22af068fba1eb5edcb4aea19d382b2a3deb4c8f9d475c589b6ada9e0fd493ee"
+
 [[package]]
 name = "unicode-segmentation"
-version = "1.8.0"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
+checksum = "7e8820f5d777f6224dc4be3632222971ac30164d4a258d595640799554ebfd99"
 
 [[package]]
 name = "unicode-width"
@@ -702,12 +793,6 @@ version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
 
-[[package]]
-name = "unicode-xid"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
-
 [[package]]
 name = "vec_map"
 version = "0.8.2"
@@ -716,9 +801,9 @@ checksum = "f1bddf1187be692e79c5ffeab891132dfb0f236ed36a43c7ed39f1165ee20191"
 
 [[package]]
 name = "version_check"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "vsprintf"
@@ -730,12 +815,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -752,6 +831,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
 
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
diff --git a/examples/rust/Cargo.toml b/examples/rust/Cargo.toml
index b93d8c7a..c5c4cb31 100644
--- a/examples/rust/Cargo.toml
+++ b/examples/rust/Cargo.toml
@@ -2,4 +2,5 @@
 members = [
   "tracecon",
   "xdp",
+  "profile",
 ]
diff --git a/examples/rust/profile/.gitignore b/examples/rust/profile/.gitignore
new file mode 100644
index 00000000..3a1b4489
--- /dev/null
+++ b/examples/rust/profile/.gitignore
@@ -0,0 +1,2 @@
+/src/bpf/.output
+/target
diff --git a/examples/rust/profile/Cargo.toml b/examples/rust/profile/Cargo.toml
new file mode 100644
index 00000000..0aedb9ed
--- /dev/null
+++ b/examples/rust/profile/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "profile"
+version = "0.1.0"
+authors = ["Kuifeng Lee <kuifeng@fb.com>"]
+license = "GPL-2.0 OR BSD-3-Clause"
+
+[dependencies]
+libbpf-rs = "0.14.0"
+nix = "0.24.1"
+blazesym = { git = "https://github.com/ThinkerYzu1/blazesym.git", features = ["cheader"] }
+libc = "*"
+clap = { version = "3.1.18", features = ["derive"] }
+
+[build-dependencies]
+libbpf-cargo = "0.9.3"
diff --git a/examples/rust/profile/build.rs b/examples/rust/profile/build.rs
new file mode 100644
index 00000000..38938b9f
--- /dev/null
+++ b/examples/rust/profile/build.rs
@@ -0,0 +1,24 @@
+use std::fs::create_dir_all;
+use std::path::Path;
+
+extern crate libbpf_cargo;
+use libbpf_cargo::SkeletonBuilder;
+
+const SRC: &str = "./src/bpf/profile.bpf.c";
+
+fn main() {
+    // It's unfortunate we cannot use `OUT_DIR` to store the generated skeleton.
+    // Reasons are because the generated skeleton contains compiler attributes
+    // that cannot be `include!()`ed via macro. And we cannot use the `#[path = "..."]`
+    // trick either because you cannot yet `concat!(env!("OUT_DIR"), "/skel.rs")` inside
+    // the path attribute either (see https://github.com/rust-lang/rust/pull/83366).
+    //
+    // However, there is hope! When the above feature stabilizes we can clean this
+    // all up.
+    create_dir_all("./src/bpf/.output").unwrap();
+    let skel = Path::new("./src/bpf/.output/profile.skel.rs");
+    SkeletonBuilder::new(SRC)
+        .generate(&skel)
+        .expect("bpf compilation failed");
+    println!("cargo:rerun-if-changed={}", SRC);
+}
diff --git a/examples/rust/profile/src/bpf/profile.bpf.c b/examples/rust/profile/src/bpf/profile.bpf.c
new file mode 120000
index 00000000..4a452576
--- /dev/null
+++ b/examples/rust/profile/src/bpf/profile.bpf.c
@@ -0,0 +1 @@
+../../../../c/profile.bpf.c
\ No newline at end of file
diff --git a/examples/rust/profile/src/bpf/profile.h b/examples/rust/profile/src/bpf/profile.h
new file mode 120000
index 00000000..7dd13398
--- /dev/null
+++ b/examples/rust/profile/src/bpf/profile.h
@@ -0,0 +1 @@
+../../../../c/profile.h
\ No newline at end of file
diff --git a/examples/rust/profile/src/bpf/vmlinux.h b/examples/rust/profile/src/bpf/vmlinux.h
new file mode 120000
index 00000000..cab453bb
--- /dev/null
+++ b/examples/rust/profile/src/bpf/vmlinux.h
@@ -0,0 +1 @@
+../../../../../vmlinux/vmlinux.h
\ No newline at end of file
diff --git a/examples/rust/profile/src/main.rs b/examples/rust/profile/src/main.rs
new file mode 100644
index 00000000..a9b492cc
--- /dev/null
+++ b/examples/rust/profile/src/main.rs
@@ -0,0 +1,216 @@
+use std::u64;
+
+use std::boxed::Box;
+use std::io::Error;
+use std::mem;
+use std::result::Result;
+use std::time::Duration;
+
+extern crate nix;
+use nix::unistd::close;
+
+extern crate libbpf_rs;
+
+extern crate clap;
+use clap::Parser;
+
+#[path = "bpf/.output/profile.skel.rs"]
+mod profile;
+use profile::*;
+
+extern crate blazesym;
+use blazesym::*;
+
+extern crate libc;
+
+mod syscall;
+
+const MAX_STACK_DEPTH: usize = 128;
+const TASK_COMM_LEN: usize = 16;
+
+// A Rust version of stacktrace_event in profile.h
+#[repr(C)]
+struct stacktrace_event {
+    pid: u32,
+    cpu_id: u32,
+    comm: [u8; TASK_COMM_LEN],
+    kstack_size: i32,
+    ustack_size: i32,
+    kstack: [u64; MAX_STACK_DEPTH],
+    ustack: [u64; MAX_STACK_DEPTH],
+}
+
+fn init_perf_monitor(freq: u64) -> Vec<i32> {
+    let nprocs = libbpf_rs::num_possible_cpus().unwrap();
+    let pid = -1;
+    let buf: Vec<u8> = vec![0; mem::size_of::<syscall::perf_event_attr>()];
+    let mut attr = unsafe {
+        Box::<syscall::perf_event_attr>::from_raw(
+            buf.leak().as_mut_ptr() as *mut syscall::perf_event_attr
+        )
+    };
+    attr._type = syscall::PERF_TYPE_HARDWARE;
+    attr.size = mem::size_of::<syscall::perf_event_attr>() as u32;
+    attr.config = syscall::PERF_COUNT_HW_CPU_CYCLES;
+    attr.sample.sample_freq = freq;
+    attr.flags = 1 << 10; // freq = 1
+    (0..nprocs)
+        .map(|cpu| {
+            let fd = syscall::perf_event_open(attr.as_ref(), pid, cpu as i32, -1, 0);
+            fd as i32
+        })
+        .collect()
+}
+
+fn attach_perf_event(
+    pefds: &[i32],
+    prog: &mut libbpf_rs::Program,
+) -> Vec<Result<libbpf_rs::Link, libbpf_rs::Error>> {
+    pefds
+        .iter()
+        .map(|pefd| prog.attach_perf_event(*pefd))
+        .collect()
+}
+
+// Pid 0 means a kernel space stack.
+fn show_stack_trace(stack: &[u64], symbolizer: &BlazeSymbolizer, pid: u32) {
+    let cfg = if pid == 0 {
+        SymbolFileCfg::Kernel {
+            kallsyms: None,
+            kernel_image: None,
+        }
+    } else {
+        SymbolFileCfg::Process { pid: Some(pid) }
+    };
+
+    let syms = symbolizer.symbolize(&[cfg], stack);
+    for i in 0..stack.len() {
+        if syms.len() <= i || syms[i].len() == 0 {
+            println!("  {} [<{:016x}>]", i, stack[i]);
+            continue;
+        }
+
+        if syms[i].len() == 1 {
+            let sym = &syms[i][0];
+            if !sym.path.is_empty() {
+                println!(
+                    "  {} [<{:016x}>] {}+0x{:x} {}:{}",
+                    i,
+                    stack[i],
+                    sym.symbol,
+                    stack[i] - sym.start_address,
+                    sym.path,
+                    sym.line_no
+                );
+            } else {
+                println!(
+                    "  {} [<{:016x}>] {}+0x{}",
+                    i,
+                    stack[i],
+                    sym.symbol,
+                    stack[i] - sym.start_address
+                );
+            }
+            continue;
+        }
+
+        println!("  {} [<{:016x}>]", i, stack[i]);
+
+        for sym in &syms[i] {
+            if !sym.path.is_empty() {
+                println!(
+                    "        {}+0x{:x} {}:{}",
+                    sym.symbol,
+                    stack[i] - sym.start_address,
+                    sym.path,
+                    sym.line_no
+                );
+            } else {
+                println!("        {}+0x{}", sym.symbol, stack[i] - sym.start_address);
+            }
+        }
+    }
+}
+
+fn event_handler(symbolizer: &BlazeSymbolizer, data: &[u8]) -> ::std::os::raw::c_int {
+    if data.len() != mem::size_of::<stacktrace_event>() {
+        eprintln!(
+            "Invalid size {} != {}",
+            data.len(),
+            mem::size_of::<stacktrace_event>()
+        );
+        return 1;
+    }
+
+    let event = unsafe { &*(data.as_ptr() as *const stacktrace_event) };
+
+    if event.kstack_size <= 0 && event.ustack_size <= 0 {
+        return 1;
+    }
+
+    let comm = std::str::from_utf8(&event.comm)
+        .or::<Error>(Ok("<unknown>"))
+        .unwrap();
+    println!("COMM: {} (pid={}) @ CPU {}", comm, event.pid, event.cpu_id);
+
+    if event.kstack_size > 0 {
+        println!("Kernel:");
+        show_stack_trace(
+            &event.kstack[0..(event.kstack_size as usize / mem::size_of::<u64>())],
+            symbolizer,
+            0,
+        );
+    } else {
+        println!("No Kernel Stack");
+    }
+
+    if event.ustack_size > 0 {
+        println!("Userspace:");
+        show_stack_trace(
+            &event.ustack[0..(event.ustack_size as usize / mem::size_of::<u64>())],
+            symbolizer,
+            event.pid,
+        );
+    } else {
+        println!("No Userspace Stack");
+    }
+
+    println!();
+    0
+}
+
+#[derive(Parser, Debug)]
+struct Args {
+    /// Sampling frequency
+    #[clap(short, default_value_t = 1)]
+    freq: u64,
+}
+
+fn main() -> Result<(), Error> {
+    let args = Args::parse();
+    let freq = if args.freq < 1 { 1 } else { args.freq };
+
+    let symbolizer = BlazeSymbolizer::new()?;
+
+    let skel_builder = ProfileSkelBuilder::default();
+    let open_skel = skel_builder.open().unwrap();
+    let mut skel = open_skel.load().unwrap();
+
+    let pefds = init_perf_monitor(freq);
+    let _links = attach_perf_event(&pefds, skel.progs_mut().profile());
+
+    let mut builder = libbpf_rs::RingBufferBuilder::new();
+    builder
+        .add(skel.maps().events(), move |data| {
+            event_handler(&symbolizer, data)
+        })
+        .unwrap();
+    let ringbuf = builder.build().unwrap();
+    while ringbuf.poll(Duration::MAX).is_ok() {}
+
+    for pefd in pefds {
+        close(pefd)?;
+    }
+
+    Ok(())
+}
diff --git a/examples/rust/profile/src/syscall.rs b/examples/rust/profile/src/syscall.rs
new file mode 100644
index 00000000..eb73f3b7
--- /dev/null
+++ b/examples/rust/profile/src/syscall.rs
@@ -0,0 +1,80 @@
+extern crate libc;
+
+#[repr(C)]
+pub union sample_un {
+    pub sample_period: u64,
+    pub sample_freq: u64,
+}
+
+#[repr(C)]
+pub union wakeup_un {
+    pub wakeup_events: u32,
+    pub wakeup_atermark: u32,
+}
+
+#[repr(C)]
+pub union bp_1_un {
+    pub bp_addr: u64,
+    pub kprobe_func: u64,
+    pub uprobe_path: u64,
+    pub config1: u64,
+}
+
+#[repr(C)]
+pub union bp_2_un {
+    pub bp_len: u64,
+    pub kprobe_addr: u64,
+    pub probe_offset: u64,
+    pub config2: u64,
+}
+
+#[repr(C)]
+pub struct perf_event_attr {
+    pub _type: u32,
+    pub size: u32,
+    pub config: u64,
+    pub sample: sample_un,
+    pub sample_type: u64,
+    pub read_format: u64,
+    pub flags: u64,
+    pub wakeup: wakeup_un,
+    pub bp_type: u32,
+    pub bp_1: bp_1_un,
+    pub bp_2: bp_2_un,
+    pub branch_sample_type: u64,
+    pub sample_regs_user: u64,
+    pub sample_stack_user: u32,
+    pub clockid: i32,
+    pub sample_regs_intr: u64,
+    pub aux_watermark: u32,
+    pub sample_max_stack: u16,
+    pub __reserved_2: u16,
+    pub aux_sample_size: u32,
+    pub __reserved_3: u32,
+}
+
+pub const PERF_TYPE_HARDWARE: u32 = 0;
+pub const PERF_COUNT_HW_CPU_CYCLES: u64 = 0;
+
+extern "C" {
+    fn syscall(number: libc::c_long, ...) -> libc::c_long;
+}
+
+pub fn perf_event_open(
+    hw_event: &perf_event_attr,
+    pid: libc::pid_t,
+    cpu: libc::c_int,
+    group_fd: libc::c_int,
+    flags: libc::c_ulong,
+) -> libc::c_long {
+    unsafe {
+        syscall(
+            libc::SYS_perf_event_open,
+            hw_event as *const perf_event_attr,
+            pid,
+            cpu,
+            group_fd,
+            flags,
+        )
+    }
+}