search for: config_debug_atomic_sleep

...ALED_BIT, &fence->flags)) return true; - if (fence->ops->signaled && fence->ops->signaled(fence)) { + if (!fence->ops->signaled) + return false; + + if (config_enabled(CONFIG_PROVE_LOCKING)) + WARN_ON(in_interrupt() || irqs_disabled()); + + if (config_enabled(CONFIG_DEBUG_ATOMIC_SLEEP)) + preempt_disable(); + + ret = fence->ops->signaled(fence); + + if (config_enabled(CONFIG_DEBUG_ATOMIC_SLEEP)) + preempt_enable(); + + if (ret) fence_signal(fence); - return true; - } - return false; + return ret; } /** 8<-------- >> If the radeon hw/driver doesn't...

This series applies on top of the driver-core-next branch of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git Before converting ttm to the new fence interface I had to fix some drivers to require a reservation before poking with fence_obj. After flipping the switch RCU becomes available instead, and the extra reservations can be dropped again. I've done at least basic

...e; > > - if (fence->ops->signaled && fence->ops->signaled(fence)) { > + if (!fence->ops->signaled) > + return false; > + > + if (config_enabled(CONFIG_PROVE_LOCKING)) > + WARN_ON(in_interrupt() || irqs_disabled()); > + > + if (config_enabled(CONFIG_DEBUG_ATOMIC_SLEEP)) > + preempt_disable(); > + > + ret = fence->ops->signaled(fence); > + > + if (config_enabled(CONFIG_DEBUG_ATOMIC_SLEEP)) > + preempt_enable(); > + > + if (ret) > fence_signal(fence); > - return true; > - } > > - return false; > + return re...

...tland wrote: > Naming will be problematic; calling them ATOMIC_* makes tham sound like > they work on atomic_t. That and I have no idea how to ensure correct > usage tree-wide; I'm not sure if/how Coccinelle can help. > > Peter, thoughts? Something like so perhaps? --- #ifdef CONFIG_DEBUG_ATOMIC_SLEEP #define WARN_SINGLE_COPY_ALIGNMENT(ptr) \ WARN_ON_ONCE(((unsigned long)(ptr)) & (sizeof(*(ptr))-1)) #else #define WARN_SINGLE_COPY_ALIGNMENT(ptr) #endif /* * Provide accessors for Single-Copy atomicy. * * That is, ensure that machine word sized loads/stores to naturally * aligned variable...

On Tue, Jul 22, 2014 at 01:46:07PM +0200, Daniel Vetter wrote: > On Tue, Jul 22, 2014 at 10:43:13AM +0200, Christian K?nig wrote: > > Am 22.07.2014 06:05, schrieb Dave Airlie: > > >On 9 July 2014 22:29, Maarten Lankhorst <maarten.lankhorst at canonical.com> wrote: > > >>Signed-off-by: Maarten Lankhorst <maarten.lankhorst at canonical.com> > >

On Fri, Nov 25, 2016 at 12:33:48PM +0100, Christian Borntraeger wrote: > On 11/25/2016 12:22 PM, Mark Rutland wrote: > > On Thu, Nov 24, 2016 at 10:36:58PM +0200, Michael S. Tsirkin wrote: > >> Though I really question the whole _ONCE APIs esp with > >> aggregate types - these seem to generate a memcpy and > >> an 8-byte read/writes sometimes, and I'm pretty

On Fri, Nov 25, 2016 at 12:33:48PM +0100, Christian Borntraeger wrote: > On 11/25/2016 12:22 PM, Mark Rutland wrote: > > On Thu, Nov 24, 2016 at 10:36:58PM +0200, Michael S. Tsirkin wrote: > >> Though I really question the whole _ONCE APIs esp with > >> aggregate types - these seem to generate a memcpy and > >> an 8-byte read/writes sometimes, and I'm pretty

...ef CONFIG_KMAP_LOCAL + int idx; + pte_t pteval[KM_TYPE_NR]; +#endif +}; + struct task_struct { #ifdef CONFIG_THREAD_INFO_IN_TASK /* @@ -1294,6 +1302,7 @@ struct task_struct { unsigned int sequential_io; unsigned int sequential_io_avg; #endif + struct kmap_ctrl kmap_ctrl; #ifdef CONFIG_DEBUG_ATOMIC_SLEEP unsigned long task_state_change; #endif --- a/kernel/entry/common.c +++ b/kernel/entry/common.c @@ -2,6 +2,7 @@ #include <linux/context_tracking.h> #include <linux/entry-common.h> +#include <linux/highmem.h> #include <linux/livepatch.h> #include <linux/audit.h&...

...limit, not add it to the address). + */ + if (__builtin_constant_p(size)) { + return array_index_nospec(addr, limit - size + 1); + } + + /* Arbitrary sizes? Be careful about overflow */ + return array_index_mask_nospec(limit, size) & + array_index_nospec(addr, limit - size + 1); +} + #ifdef CONFIG_DEBUG_ATOMIC_SLEEP # define WARN_ON_IN_IRQ() WARN_ON_ONCE(!in_task()) #else @@ -95,12 +123,46 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un * checks that the pointer is in the user space range - after calling * this function, memory access functions may still return -EFAULT...

...limit, not add it to the address). + */ + if (__builtin_constant_p(size)) { + return array_index_nospec(addr, limit - size + 1); + } + + /* Arbitrary sizes? Be careful about overflow */ + return array_index_mask_nospec(limit, size) & + array_index_nospec(addr, limit - size + 1); +} + #ifdef CONFIG_DEBUG_ATOMIC_SLEEP # define WARN_ON_IN_IRQ() WARN_ON_ONCE(!in_task()) #else @@ -95,12 +123,46 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un * checks that the pointer is in the user space range - after calling * this function, memory access functions may still return -EFAULT...

On Thu, Nov 1, 2018 at 4:00 PM Kees Cook <keescook at chromium.org> wrote: > > + memset(&rsp, 0, sizeof(rsp)); > + rsp.response = VIRTIO_SCSI_S_FUNCTION_REJECTED; > + resp = vq->iov[out].iov_base; > + ret = __copy_to_user(resp, &rsp, sizeof(rsp)); > > Is it actually safe to trust that iov_base has passed an earlier > access_ok()

On Thu, Nov 1, 2018 at 4:00 PM Kees Cook <keescook at chromium.org> wrote: > > + memset(&rsp, 0, sizeof(rsp)); > + rsp.response = VIRTIO_SCSI_S_FUNCTION_REJECTED; > + resp = vq->iov[out].iov_base; > + ret = __copy_to_user(resp, &rsp, sizeof(rsp)); > > Is it actually safe to trust that iov_base has passed an earlier > access_ok()

..._KMEMLEAK_DEFAULT_OFF is not set # CONFIG_DEBUG_PREEMPT is not set CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_PI_LIST=y CONFIG_RT_MUTEX_TESTER=y # CONFIG_DEBUG_SPINLOCK is not set CONFIG_DEBUG_MUTEXES=y # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_PROVE_LOCKING is not set # CONFIG_LOCK_STAT is not set CONFIG_DEBUG_ATOMIC_SLEEP=y CONFIG_DEBUG_LOCKING_API_SELFTESTS=y CONFIG_STACKTRACE=y # CONFIG_DEBUG_STACK_USAGE is not set CONFIG_DEBUG_KOBJECT=y # CONFIG_DEBUG_HIGHMEM is not set # CONFIG_DEBUG_BUGVERBOSE is not set # CONFIG_DEBUG_INFO is not set CONFIG_DEBUG_VM=y # CONFIG_DEBUG_VM_RB is not set # CONFIG_DEBUG_VIRTUAL is n...

..._KMEMLEAK_DEFAULT_OFF is not set # CONFIG_DEBUG_PREEMPT is not set CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_PI_LIST=y CONFIG_RT_MUTEX_TESTER=y # CONFIG_DEBUG_SPINLOCK is not set CONFIG_DEBUG_MUTEXES=y # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_PROVE_LOCKING is not set # CONFIG_LOCK_STAT is not set CONFIG_DEBUG_ATOMIC_SLEEP=y CONFIG_DEBUG_LOCKING_API_SELFTESTS=y CONFIG_STACKTRACE=y # CONFIG_DEBUG_STACK_USAGE is not set CONFIG_DEBUG_KOBJECT=y # CONFIG_DEBUG_HIGHMEM is not set # CONFIG_DEBUG_BUGVERBOSE is not set # CONFIG_DEBUG_INFO is not set CONFIG_DEBUG_VM=y # CONFIG_DEBUG_VM_RB is not set # CONFIG_DEBUG_VIRTUAL is n...

...FIG_DEBUG_TIMEKEEPING is not set # # Lock Debugging (spinlocks, mutexes, etc...) # # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_MUTEXES is not set # CONFIG_DEBUG_WW_MUTEX_SLOWPATH is not set # CONFIG_DEBUG_LOCK_ALLOC is not set # CONFIG_PROVE_LOCKING is not set # CONFIG_LOCK_STAT is not set # CONFIG_DEBUG_ATOMIC_SLEEP is not set # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set # CONFIG_LOCK_TORTURE_TEST is not set # CONFIG_STACKTRACE is not set # CONFIG_DEBUG_KOBJECT is not set CONFIG_DEBUG_BUGVERBOSE=y # CONFIG_DEBUG_LIST is not set # CONFIG_DEBUG_PI_LIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NO...

...DEFAULT_OFF is not set CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_PI_LIST=y # CONFIG_RT_MUTEX_TESTER is not set CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_MUTEXES=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y CONFIG_LOCKDEP=y CONFIG_LOCK_STAT=y # CONFIG_DEBUG_LOCKDEP is not set CONFIG_TRACE_IRQFLAGS=y # CONFIG_DEBUG_ATOMIC_SLEEP is not set CONFIG_DEBUG_LOCKING_API_SELFTESTS=y CONFIG_STACKTRACE=y # CONFIG_DEBUG_STACK_USAGE is not set CONFIG_DEBUG_KOBJECT=y # CONFIG_DEBUG_HIGHMEM is not set CONFIG_DEBUG_BUGVERBOSE=y # CONFIG_DEBUG_INFO is not set CONFIG_DEBUG_VM=y # CONFIG_DEBUG_VM_RB is not set # CONFIG_DEBUG_VIRTUAL is not...

...DEFAULT_OFF is not set CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_PI_LIST=y # CONFIG_RT_MUTEX_TESTER is not set CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_MUTEXES=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_PROVE_LOCKING=y CONFIG_LOCKDEP=y CONFIG_LOCK_STAT=y # CONFIG_DEBUG_LOCKDEP is not set CONFIG_TRACE_IRQFLAGS=y # CONFIG_DEBUG_ATOMIC_SLEEP is not set CONFIG_DEBUG_LOCKING_API_SELFTESTS=y CONFIG_STACKTRACE=y # CONFIG_DEBUG_STACK_USAGE is not set CONFIG_DEBUG_KOBJECT=y # CONFIG_DEBUG_HIGHMEM is not set CONFIG_DEBUG_BUGVERBOSE=y # CONFIG_DEBUG_INFO is not set CONFIG_DEBUG_VM=y # CONFIG_DEBUG_VM_RB is not set # CONFIG_DEBUG_VIRTUAL is not...

On Fri, Oct 28, 2016 at 11:56:30AM +0300, Mika Westerberg wrote: > On Thu, Oct 27, 2016 at 06:06:48PM +0200, Peter Wu wrote: > > On Thu, Oct 27, 2016 at 12:55:08PM +0300, Mika Westerberg wrote: > > > On Thu, Oct 27, 2016 at 09:42:28AM +0000, Rick Kerkhof wrote: > > > > No, there are not. Here is the recursive directory listing: > > > > > > Are

On 12/20/2011 10:47 PM, Stephen Rothwell wrote: > Hi all, > > Changes since 20111220: drivers/xen/xenbus/xenbus_dev_backend.c:74:2: error: implicit declaration of function ''xen_initial_domain'' Full randconfig file is attached. -- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***

...mutexes, etc...) # CONFIG_LOCK_DEBUGGING_SUPPORT=y CONFIG_PROVE_LOCKING=y # CONFIG_LOCK_STAT is not set CONFIG_DEBUG_RT_MUTEXES=y CONFIG_DEBUG_SPINLOCK=y CONFIG_DEBUG_MUTEXES=y CONFIG_DEBUG_WW_MUTEX_SLOWPATH=y CONFIG_DEBUG_RWSEMS=y CONFIG_DEBUG_LOCK_ALLOC=y CONFIG_LOCKDEP=y CONFIG_DEBUG_LOCKDEP=y # CONFIG_DEBUG_ATOMIC_SLEEP is not set # CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set # CONFIG_LOCK_TORTURE_TEST is not set # CONFIG_WW_MUTEX_SELFTEST is not set # end of Lock Debugging (spinlocks, mutexes, etc...) CONFIG_TRACE_IRQFLAGS=y CONFIG_STACKTRACE=y CONFIG_WARN_ALL_UNSEEDED_RANDOM=y CONFIG_DEBUG_KOBJECT=y CONFIG_DE...