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| author |   Kees Cook <kees@kernel.org> | 2025-07-17 16:25:06 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2025-07-21 21:35:01 -0700 |
| commit | 57fbad15c2eee77276a541c616589b32976d2b8e (patch) | |
| tree | 7ef2b8ac0372560cf39665ae44bc67ec34b2bef4 /include/linux/sched.h | |
| parent | seq_buf: Introduce KUnit tests (diff) | |
| download | wireguard-linux-57fbad15c2eee77276a541c616589b32976d2b8e.tar.xz wireguard-linux-57fbad15c2eee77276a541c616589b32976d2b8e.zip | |
stackleak: Rename STACKLEAK to KSTACK_ERASE
In preparation for adding Clang sanitizer coverage stack depth tracking
that can support stack depth callbacks:
- Add the new top-level CONFIG_KSTACK_ERASE option which will be
implemented either with the stackleak GCC plugin, or with the Clang
stack depth callback support.
- Rename CONFIG_GCC_PLUGIN_STACKLEAK as needed to CONFIG_KSTACK_ERASE,
but keep it for anything specific to the GCC plugin itself.
- Rename all exposed "STACKLEAK" names and files to "KSTACK_ERASE" (named
for what it does rather than what it protects against), but leave as
many of the internals alone as possible to avoid even more churn.
While here, also split "prev_lowest_stack" into CONFIG_KSTACK_ERASE_METRICS,
since that's the only place it is referenced from.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250717232519.2984886-1-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
Diffstat (limited to 'include/linux/sched.h')
| -rw-r--r-- | include/linux/sched.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 4f78a64beb52..b7d2f2fd4cd4 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1607,8 +1607,10 @@ struct task_struct { /* Used by BPF for per-TASK xdp storage */ struct bpf_net_context *bpf_net_context; -#ifdef CONFIG_GCC_PLUGIN_STACKLEAK +#ifdef CONFIG_KSTACK_ERASE unsigned long lowest_stack; +#endif +#ifdef CONFIG_KSTACK_ERASE_METRICS unsigned long prev_lowest_stack; #endif |