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generated by cgit v1.2.3 (git 2.46.0) at 2026-07-30 08:55:26 +0000
module_text_address(). jump_label: Use RCU in all users of __module_address(). x86: Use RCU in all users of __module_address(). cfi: Use RCU while invoking __module_address(). powerpc/ftrace: Use RCU in all users of __module_text_address(). LoongArch: ftrace: Use RCU in all users of __module_text_address(). LoongArch/orc: Use RCU in all users of __module_address(). arm64: module: Use RCU in all users of __module_text_address(). ARM: module: Use RCU in all users of __module_text_address(). module: Use RCU in all users of __module_text_address(). module: Use RCU in all users of __module_address(). module: Use RCU in search_module_extables(). ... 2025-03-10cfi: Use RCU while invoking __module_address().Sebastian Andrzej Siewior __module_address() can be invoked within a RCU section, there is no requirement to have preemption disabled. The _notrace() variant was introduced in commit 14c4c8e41511a ("cfi: Use rcu_read_{un}lock_sched_notrace"). The recursive case where __cfi_slowpath_diag() could end up calling itself is no longer present, as all that logic is gone since commit 89245600941e ("cfi: Switch to -fsanitize=kcfi"). Sami Tolvanen said that KCFI checks don't perform function calls. Elliot Berman verified it with | modprobe -a dummy_stm stm_ftrace stm_p_basic | mkdir -p /sys/kernel/config/stp-policy/dummy_stm.0.my-policy/default | echo function > /sys/kernel/tracing/current_tracer | echo 1 > /sys/kernel/tracing/tracing_on | echo dummy_stm.0 > /sys/class/stm_source/ftrace/stm_source_link Replace the rcu_read_lock_sched_notrace() section around __module_address() with RCU. Cc: Elliot Berman <quic_eberman@quicinc.com> Cc: Kees Cook <kees@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: llvm@lists.linux.dev Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Elliot Berman <elliot.berman@oss.qualcomm.com> # sm8650-qrd [1] Link: https://lore.kernel.org/all/20241230185812429-0800.eberman@hu-eberman-lv.qualcomm.com [1] Link: https://lore.kernel.org/r/20250108090457.512198-22-bigeasy@linutronix.de Signed-off-by: Petr Pavlu <petr.pavlu@suse.com> 2025-02-26x86/cfi: Add 'cfi=warn' boot optionPeter Zijlstra Rebuilding with CONFIG_CFI_PERMISSIVE=y enabled is such a pain, esp. since clang is so slow. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20250224124159.924496481@infradead.org