Re: [PATCH] perf trace: Increase syscall handler map size to 1024

[Namhyung Kim]

On Mon, 19 May 2025 16:25:39 -0700, Namhyung Kim wrote:
> The syscalls_sys_{enter,exit} map in augmented_raw_syscalls.bpf.c has
> max entries of 512.  Usually syscall numbers are smaller than this but
> x86 has x32 ABI where syscalls start from 512.
> 
> That makes trace__init_syscalls_bpf_prog_array_maps() fail in the middle
> of the loop when it accesses those keys.  As the loop iteration is not
> ordered by syscall numbers anymore, the failure can affect non-x32
> syscalls.
> 
> [...]
Applied to perf-tools-next, thanks!

Best regards,
Namhyung