bpftrace/bpftrace v0.21.0

on GitHub

[0.21.0] 2024-06-21

Added

• Add lazy_symbolication config option
  • #2958
• Add ability to list all probes in a program
  • #2969
• Add ability to call print() with indexed maps to print single map values
  • #3027
• Add LLVM 18 support
  • #3051
• Add ability to call delete() with multiple arguments
  • #3046
• Add for-each loops for iterating over map elements
  • #3003
• Add optional systemd support
  • #3158
• Add ability to attach uprobes to inlined functions
  • #3095
• Enable count, sum, min, and max map reads in kernel space (implicit casting)
  • #3189
  • #3226
• Add config option for handling missing probes
  • #3246

Changed

• Better error message for args in mixed probes
  • #3047
• Reproducible Builds: Do not store timestamps in gzip header
  • #3096
• Improve DWARF support, using liblldb instead of libdw
  • #3042
• Use new hash function to reduce collisions when aggregating on stack traces
  • #3060
• Disable func builtin for kretprobes and uretprobes when get_func_ip feature is not available
  • #2645
• Move error printing from debug to verbose mode
  • #3202
• Better error message when libbpf is too old
  • #3212
• Allow trailing semicolons and empty blocks in config syntax
  • #3077
• Allow attaching to spin_lock functions with mitigations to prevent deadlocks
  • #3206
• Remove length limitations for strings coming out of str() and path()
  • #3228
  • #3237
  • #3245

Deprecated

• Deprecate sarg builtin
  • #3095

Removed

Fixed

• Fix ability to interrupt bpftrace during probe attach
  • #3053
• Fix field resolution on structs with anon union as first field
  • #2964
• Fix alignment of atomic map counter update
  • #3045
• Fix func builtin for kretprobes and uretprobes for kernels with working get_func_ip feature
  • #2645
• Fix ustack missing the second-from-top stack frame in uprobes
  • #3095
• Fix storing strings of differing lengths in a variable
  • #3178
• Fix field resolution for structs in arrays
  • #3024
• Fix error in dereferencing kernel double pointers
  • #3024
• Fix variable corruption when used as map key
  • #3195
• Fix crash when assigning a record type to a map
  • #3220
• Fix type resolution for pointers with BTF_KIND_TYPE_TAG
  • #3240
• Fix attachment of probes attaching to wildcarded and non-wildcarded kprobes
  • #3246

Security

• Don't unpack kernel headers or look in tmp
  • #3156

Docs

Tools

• Ignore warnings for missing probes
  • #3246