diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-20 08:59:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-20 08:59:23 +0200 |
| commit | e8f4118f4297f93e82ebcf4dd1eb6e48fead592e (patch) | |
| tree | 7cc982375122242b71036c8b8154d972da1b84f7 /kernel/cfi.c | |
| parent | de9257ae1d3b0d8856955045d194e3ff4f278394 (diff) | |
| parent | a111daf0c53ae91e71fd2bfe7497862d14132e3e (diff) | |
Merge 5.19-rc3 into staging-next
This resolves the merge issue with:
drivers/staging/r8188eu/os_dep/ioctl_linux.c
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/cfi.c')
| -rw-r--r-- | kernel/cfi.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/kernel/cfi.c b/kernel/cfi.c index 9594cfd1cf2c..08102d19ec15 100644 --- a/kernel/cfi.c +++ b/kernel/cfi.c @@ -281,6 +281,8 @@ static inline cfi_check_fn find_module_check_fn(unsigned long ptr) static inline cfi_check_fn find_check_fn(unsigned long ptr) { cfi_check_fn fn = NULL; + unsigned long flags; + bool rcu_idle; if (is_kernel_text(ptr)) return __cfi_check; @@ -290,13 +292,21 @@ static inline cfi_check_fn find_check_fn(unsigned long ptr) * the shadow and __module_address use RCU, so we need to wake it * up if necessary. */ - RCU_NONIDLE({ - if (IS_ENABLED(CONFIG_CFI_CLANG_SHADOW)) - fn = find_shadow_check_fn(ptr); + rcu_idle = !rcu_is_watching(); + if (rcu_idle) { + local_irq_save(flags); + rcu_irq_enter(); + } + + if (IS_ENABLED(CONFIG_CFI_CLANG_SHADOW)) + fn = find_shadow_check_fn(ptr); + if (!fn) + fn = find_module_check_fn(ptr); - if (!fn) - fn = find_module_check_fn(ptr); - }); + if (rcu_idle) { + rcu_irq_exit(); + local_irq_restore(flags); + } return fn; } |