Re: [PATCH v2] riscv: kprobes: Prevent probes in breakpoint handlers
Paul Walmsley <[email protected]>
| Newsgroups | org.infradead.lists.linux-riscv,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Thu, 6 Aug 2026, Rui Qi wrote: > The ftrace selftest multiple_kprobes.tc registers kprobe events on > the first 256 text symbols from /proc/kallsyms. If handle_break() is > selected as a probe target on RISC-V, the breakpoint exception path > can trap again before it reaches the kprobe breakpoint handler. That > recursively enters do_trap_break() and can make the system > unresponsive. > > Mark handle_break() and its local probe dispatch helpers as nokprobe > symbols so they are added to the kprobe blacklist, matching other > low-level breakpoint exception paths. > > Signed-off-by: Rui Qi <[email protected]> > Reviewed-by: Nam Cao <[email protected]> Thanks, queued for v7.3. - Paul _______________________________________________ linux-riscv mailing list [email protected] http://lists.infradead.org/mailman/listinfo/linux-riscv