Re: [RFC PATCH v5 2/2] arm64: Create a list of SYM_CODE functions, check return PC against list
From: Mark Brown <broonie@kernel.org>
Date: 2021-06-04 16:59:59
Also in:
live-patching, lkml
On Wed, May 26, 2021 at 04:49:17PM -0500, madvenka@linux.microsoft.com wrote:
quoted hunk ↗ jump to hunk
+ * - return_to_handler() is handled by the unwinder by attempting to + * retrieve the original return address from the per-task return + * address stack. + * + * - kretprobe_trampoline() can be handled in a similar fashion by + * attempting to retrieve the original return address from the per-task + * kretprobe instance list. + * + * - I reckon optprobes can be handled in a similar fashion in the future?
Note that there's a patch for optprobes on the list now: https://lore.kernel.org/r/1622803839-27354-1-git-send-email-liuqi115@huawei.com (local)