[PATCH v3 51/51] context_tracking: Fix noinstr vs KASAN
From: Peter Zijlstra <peterz@infradead.org>
Date: 2023-01-12 20:12:24
Also in:
linux-acpi, linux-alpha, linux-arch, linux-arm-msm, linux-clk, linux-m68k, linux-mips, linux-mm, linux-omap, linux-perf-users, linux-pm, linux-riscv, linux-s390, linux-samsung-soc, linux-sh, linux-tegra, linux-um, linuxppc-dev, lkml, loongarch, sparclinux, virtualization
vmlinux.o: warning: objtool: __ct_user_enter+0x72: call to __kasan_check_write() leaves .noinstr.text section vmlinux.o: warning: objtool: __ct_user_exit+0x47: call to __kasan_check_write() leaves .noinstr.text section Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> --- kernel/context_tracking.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
--- a/kernel/context_tracking.c
+++ b/kernel/context_tracking.c@@ -510,7 +510,7 @@ void noinstr __ct_user_enter(enum ctx_st * In this we case we don't care about any concurrency/ordering. */ if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) - atomic_set(&ct->state, state); + arch_atomic_set(&ct->state, state); } else { /* * Even if context tracking is disabled on this CPU, because it's outside
@@ -527,7 +527,7 @@ void noinstr __ct_user_enter(enum ctx_st */ if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) { /* Tracking for vtime only, no concurrent RCU EQS accounting */ - atomic_set(&ct->state, state); + arch_atomic_set(&ct->state, state); } else { /* * Tracking for vtime and RCU EQS. Make sure we don't race
@@ -535,7 +535,7 @@ void noinstr __ct_user_enter(enum ctx_st * RCU only requires RCU_DYNTICKS_IDX increments to be fully * ordered. */ - atomic_add(state, &ct->state); + arch_atomic_add(state, &ct->state); } } }
@@ -630,12 +630,12 @@ void noinstr __ct_user_exit(enum ctx_sta * In this we case we don't care about any concurrency/ordering. */ if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) - atomic_set(&ct->state, CONTEXT_KERNEL); + arch_atomic_set(&ct->state, CONTEXT_KERNEL); } else { if (!IS_ENABLED(CONFIG_CONTEXT_TRACKING_IDLE)) { /* Tracking for vtime only, no concurrent RCU EQS accounting */ - atomic_set(&ct->state, CONTEXT_KERNEL); + arch_atomic_set(&ct->state, CONTEXT_KERNEL); } else { /* * Tracking for vtime and RCU EQS. Make sure we don't race
@@ -643,7 +643,7 @@ void noinstr __ct_user_exit(enum ctx_sta * RCU only requires RCU_DYNTICKS_IDX increments to be fully * ordered. */ - atomic_sub(state, &ct->state); + arch_atomic_sub(state, &ct->state); } } }