diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2026-07-03 13:49:06 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-07-03 16:30:35 +0200 |
| commit | 38af0dd6a266057002eacb170c08298ea912fb0a (patch) | |
| tree | c7ca2c41f7bcb5a32244318d4ecf5fdce4a83b6a /kernel | |
| parent | ded9b5bd0356cc8cd6bb4a92e9c9f53ba8415df9 (diff) | |
uprobes/x86: Remove struct uprobe_trampoline object
Removing struct uprobe_trampoline object and it's tracking code,
because it's not needed. We can do same thing directly on top of
struct vm_area_struct objects.
This makes the code simpler and allows easy propagation of the
trampoline vma object into child process in following change.
Note the original code called destroy_uprobe_trampoline if the
optimiation failed, but it only freed the struct uprobe_trampoline
object, not the vma. The new vma leak is fixed in following change.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://patch.msgid.link/20260703114917.238144-3-jolsa@kernel.org
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/events/uprobes.c | 10 | ||||
| -rw-r--r-- | kernel/fork.c | 1 |
2 files changed, 0 insertions, 11 deletions
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 4084e926e284..b5c516168f84 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -1806,14 +1806,6 @@ static struct xol_area *get_xol_area(void) return area; } -void __weak arch_uprobe_clear_state(struct mm_struct *mm) -{ -} - -void __weak arch_uprobe_init_state(struct mm_struct *mm) -{ -} - /* * uprobe_clear_state - Free the area allocated for slots. */ @@ -1825,8 +1817,6 @@ void uprobe_clear_state(struct mm_struct *mm) delayed_uprobe_remove(NULL, mm); mutex_unlock(&delayed_uprobe_lock); - arch_uprobe_clear_state(mm); - if (!area) return; diff --git a/kernel/fork.c b/kernel/fork.c index 13e38e89a1f3..00b52c7314d1 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1064,7 +1064,6 @@ static void mm_init_uprobes_state(struct mm_struct *mm) { #ifdef CONFIG_UPROBES mm->uprobes_state.xol_area = NULL; - arch_uprobe_init_state(mm); #endif } |