ebpf

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kallsyms: change Modules caching strategy, cache address lookups

1

See individual commits for context. At a high level: - add caching for __ksym reference resolving - stop caching all text symbols that have an associated kmod - for both...

ti-mo

This is a proof-of-concept. The code is not ready for merging but it shows it is possible to significantly reduce the memory consumption (by 27MB). --- In the new LoadSpecFromReader,...

alban

Incomplete verifier log in 1.16

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### Describe the bug When I called collection.LoadAndAssign, I found that the error log of ebpf program loading failure was intercepted, resulting in very few logs available to me. Is...

weli-l

[RFC] Name memory regions allocated with mmap (prctl PR_SET_VMA_ANON_NAME)

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### Suggestion Every time cilium/ebpf uses `mmap(MAP_ANONYMOUS)`, it should give a name to the memory region indicating its purpose (i.e. ring buffer for a specific ebpf map). ```c share =...

alban

Run netkit test in separate network namespace

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This blew up on my machine today: ``` --- FAIL: TestNetkitAnchor (0.00s) quicktest.go:12: error: got non-nil value got: e"netlink receive: file exists" stack: /home/timo/github/cilium/ebpf/link/netkit_test.go:95 qt.Assert(tb, qt.IsNil(err)) /home/timo/github/cilium/ebpf/link/netkit_test.go:32 linkA, ifIndex :=...

ti-mo

`LoadPinned*` silently succeeds on objects of wrong type

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I was writing something to parse objects from a `/sys/fs/bpf` fs and was expecting to receive an error when using `ebpf.LoadPinnedMap` on a prog and `ebpf.LoadPinnedProg` on a map. Instead,...

mtardy

https://github.com/cilium/ebpf/pull/1772 introduced lazy loading of strings from string tables. It helps a lot when querying types, but when parsing line infos, we end up querying multiple times the same offest...

paulcacheux

asm: allow negative constants for builtin function calls

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The work to encode a platform into various constant types made it so that decoding a call to a builtin helper with a negative value fails with decoding instructions for...

lmb

prog: get context out from syscall program

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Linux syscall program errors on non-nil ctxOut, uses ctxIn for both input and output [1]. We have separate Context and ContextOut fields in RunOptions. It should be possible to capture...

mejedi

program: perform CO-RE against all kmod

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This fixes a long standing issue with our CO-RE implementation. Please see the commit message for details.

lmb