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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2021-09-14 23:42:02 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-09-30 21:24:07 -0400 |
| commit | 7391dd19027cec4e0edf81b7c27079ae0ecd2d6b (patch) | |
| tree | 5dbbd94c3d3a40026bcfe25d7687ed7e48db0808 /kernel/kprobes.c | |
| parent | c1f76fe58f6983205ad14045dbc303416d5e990a (diff) | |
| download | linux-7391dd19027cec4e0edf81b7c27079ae0ecd2d6b.tar.gz | |
arm: kprobes: Make space for instruction pointer on stack
Since arm's __kretprobe_trampoline() saves partial 'pt_regs' on the
stack, 'regs->ARM_pc' (instruction pointer) is not accessible from
the kretprobe handler. This means if instruction_pointer_set() is
used from kretprobe handler, it will break the data on the stack.
Make space for instruction pointer (ARM_pc) on the stack in the
__kretprobe_trampoline() for fixing this problem.
Link: https://lkml.kernel.org/r/163163052262.489837.10327621053231461255.stgit@devnote2
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/kprobes.c')
0 files changed, 0 insertions, 0 deletions