diff options
| author | Masami Hiramatsu (Google) <[email protected]> | 2022-12-02 11:18:52 +0900 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2022-12-05 14:20:08 +0000 |
| commit | 3b84efc066f8793a6581018d92da9b304abd8ce8 (patch) | |
| tree | 5de96836cae3b00671e450c18a4705f27d589c5e /lib/mpi/mpiutil.c | |
| parent | 30a421552373d2becb378282408a399702a0f00a (diff) | |
arm64: kprobes: Return DBG_HOOK_ERROR if kprobes can not handle a BRK
Return DBG_HOOK_ERROR if kprobes can not handle a BRK because it
fails to find a kprobe corresponding to the address.
Since arm64 kprobes uses stop_machine based text patching for removing
BRK, it ensures all running kprobe_break_handler() is done at that point.
And after removing the BRK, it removes the kprobe from its hash list.
Thus, if the kprobe_break_handler() fails to find kprobe from hash list,
there is a bug.
Signed-off-by: Masami Hiramatsu (Google) <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Link: https://lore.kernel.org/r/166994753273.439920.6629626290560350760.stgit@devnote3
Signed-off-by: Will Deacon <[email protected]>
Diffstat (limited to 'lib/mpi/mpiutil.c')
0 files changed, 0 insertions, 0 deletions