search for: vm_fault

...------ security/selinux/selinuxfs.c | 1 + 15 files changed, 14 insertions(+), 8 deletions(-) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index 62857a8..ae2968f 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -610,6 +610,7 @@ v9fs_vm_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf) P9_DPRINTK(P9_DEBUG_VFS, "page %p fid %lx\n", page, (unsigned long)filp->private_data); + file_update_time(filp); v9inode = V9FS_I(inode); /* make sure the cache has finished storing the page */ v9fs_fscache_wait_on_page_write(inode, page); diff --git a/fs/btrfs/i...

...+++++++++--- > 10 files changed, 30 insertions(+), 16 deletions(-) > > diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c > index 7645730dc228..dd2431c2975f 100644 > --- a/arch/x86/entry/vdso/vma.c > +++ b/arch/x86/entry/vdso/vma.c > @@ -185,7 +185,8 @@ static vm_fault_t vvar_fault(const struct vm_special_mapping *sm, > if (pvti && vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)) { > return vmf_insert_pfn_prot(vma, vmf->address, > __pa(pvti) >> PAGE_SHIFT, > - pgprot_decrypted(vma->vm_page_prot)); > + pgprot_decr...

...When userspace mmap() with PROT_WRITE and MAP_SHARED the > vma->vm_page_prot has the PTE_RDONLY and PTE_WRITE within > PAGE_SHARED_EXEC. (seeing arm64 protection_map) > > When write the userspace virtual address the first fault happen and call > into driver's .fault->ttm_bo_vm_fault_reserved->vmf_insert_pfn_prot->insert_pfn. > The insert_pfn will establish the pte entry. However the vmf_insert_pfn_prot > pass false @mkwrite to insert_pfn by default and so insert_pfn could not make > the pfn writable and it do not call maybe_mkwrite(pte_mkdirty(entry), vma) >...

...ons(+), 16 deletions(-) >>> >>> diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c >>> index 7645730dc228..dd2431c2975f 100644 >>> --- a/arch/x86/entry/vdso/vma.c >>> +++ b/arch/x86/entry/vdso/vma.c >>> @@ -185,7 +185,8 @@ static vm_fault_t vvar_fault(const struct >> vm_special_mapping *sm, >>> if (pvti && vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)) >> { >>> return vmf_insert_pfn_prot(vma, vmf->address, >>> __pa(pvti...

...;>>>> diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c >>>>> index 7645730dc228..dd2431c2975f 100644 >>>>> --- a/arch/x86/entry/vdso/vma.c >>>>> +++ b/arch/x86/entry/vdso/vma.c >>>>> @@ -185,7 +185,8 @@ static vm_fault_t vvar_fault(const struct >>>> vm_special_mapping *sm, >>>>> if (pvti && vclock_was_used(VDSO_CLOCKMODE_PVCLOCK)) >>>> { >>>>> return vmf_insert_pfn_prot(vma, vmf->address, >>>>>...

...- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -102,21 +102,23 @@ static void qxl_ttm_global_fini(struct qxl_device *qdev) } } -static struct vm_operations_struct qxl_ttm_vm_ops; -static const struct vm_operations_struct *ttm_vm_ops; - static int qxl_ttm_fault(struct vm_fault *vmf) { struct ttm_buffer_object *bo; - int r; bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data; if (bo == NULL) return VM_FAULT_NOPAGE; - r = ttm_vm_ops->fault(vmf); - return r; + return ttm_bo_vm_fault(vmf); } +static const struct vm_operations_struct qxl_ttm_vm_...

In every place where sb_start_pagefault was called now we must manage the error code and return VM_FAULT_RETRY. Signed-off-by: Marco Stornelli <marco.stornelli at gmail.com> --- fs/btrfs/inode.c | 4 +++- fs/buffer.c | 4 +++- fs/ext4/inode.c | 4 +++- fs/f2fs/file.c | 4 +++- fs/gfs2/file.c | 4 +++- fs/nilfs2/file.c | 4 +++- fs/ocfs2/mmap.c | 4...

Hi, there's a regression going from 6.2 to 6.3, where it will panic upon booting the kernel within vm_fault. This problem has been discussed before, but I'm seeing it reliably on a RELENG_6 checkout from 5th of May. It affects multiple (but identical) systems, here's an verbose boot leading to the panic. Please note that 6.2 was running fine on these machines, they also boot "normally"...

...9236e5f..914f0867ff71 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h @@ -49,7 +49,6 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file); int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); -vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf); int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem...

...diff --git a/drivers/gpu/drm/gma500/gem.c b/drivers/gpu/drm/gma500/gem.c index f9c4b1d76f56..8f07de83b6fb 100644 --- a/drivers/gpu/drm/gma500/gem.c +++ b/drivers/gpu/drm/gma500/gem.c @@ -18,7 +18,9 @@ #include "psb_drv.h" -void psb_gem_free_object(struct drm_gem_object *obj) +static vm_fault_t psb_gem_fault(struct vm_fault *vmf); + +static void psb_gem_free_object(struct drm_gem_object *obj) { struct gtt_range *gtt = container_of(obj, struct gtt_range, gem); @@ -36,6 +38,17 @@ int psb_gem_get_aperture(struct drm_device *dev, void *data, return -EINVAL; } +static const struct...

...device exclusive memory access") Cc: stable at vger.kernel.org --- mm/memory.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/mm/memory.c b/mm/memory.c index 8c8420934d60..b499bd283d8e 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3623,8 +3623,19 @@ static vm_fault_t remove_device_exclusive_entry(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct mmu_notifier_range range; - if (!folio_lock_or_retry(folio, vma->vm_mm, vmf->flags)) + /* + * We need a page reference to lock the page because we don't + * hold the PTL so a rac...

On Tue, Apr 17, 2018 at 07:08:44PM +0530, Souptick Joarder wrote: > Use new return type vm_fault_t for fault handler. For > now, this is just documenting that the function returns > a VM_FAULT value rather than an errno. Once all instances > are converted, vm_fault_t will become a distinct type. > > Reference id -> 1c8f422059ae ("mm: change return type to > vm_fault_...

On Tue, Apr 17, 2018 at 07:08:44PM +0530, Souptick Joarder wrote: > Use new return type vm_fault_t for fault handler. For > now, this is just documenting that the function returns > a VM_FAULT value rather than an errno. Once all instances > are converted, vm_fault_t will become a distinct type. > > Reference id -> 1c8f422059ae ("mm: change return type to > vm_fault_...

....dumb_map_offset = omap_gem_dumb_map_offset, .ioctls = ioctls, diff --git a/drivers/gpu/drm/omapdrm/omap_gem.c b/drivers/gpu/drm/omapdrm/omap_gem.c index d0d12d5dd76c..d68dc63dea0a 100644 --- a/drivers/gpu/drm/omapdrm/omap_gem.c +++ b/drivers/gpu/drm/omapdrm/omap_gem.c @@ -487,7 +487,7 @@ static vm_fault_t omap_gem_fault_2d(struct drm_gem_object *obj, * vma->vm_private_data points to the GEM object that is backing this * mapping. */ -vm_fault_t omap_gem_fault(struct vm_fault *vmf) +static vm_fault_t omap_gem_fault(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma; struc...

...44 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -269,7 +269,6 @@ void msm_gem_shrinker_cleanup(struct drm_device *dev); int msm_gem_mmap_obj(struct drm_gem_object *obj, struct vm_area_struct *vma); int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma); -vm_fault_t msm_gem_fault(struct vm_fault *vmf); uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj); int msm_gem_get_iova(struct drm_gem_object *obj, struct msm_gem_address_space *aspace, uint64_t *iova); diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index b4553caaa196...

...9236e5f..914f0867ff71 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h @@ -49,7 +49,6 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file); int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); -vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf); int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem...

...-- a/drivers/gpu/drm/etnaviv/etnaviv_drv.h > +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h > @@ -49,7 +49,6 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, > struct drm_file *file); > > int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); > -vm_fault_t etnaviv_gem_fault(struct vm_fault *vmf); > int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); > struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); > void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); > diff --git a/drivers/gpu/drm...

...;mem); - ttm_mem_io_unlock(man); map->virtual = NULL; map->page = NULL; } diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c index 0b805f72d18e..d3dc0682425c 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c @@ -281,8 +281,6 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf, pgoff_t i; vm_fault_t ret = VM_FAULT_NOPAGE; unsigned long address = vmf->address; - struct ttm_resource_manager *man = - ttm_manager_type(bdev, bo->mem.mem_type); /* * Refuse to fault imported pages. This should be handled @@ -32...

...ched to using folios (thanks Matthew!) - Added Reviewed-by's --- mm/memory.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/mm/memory.c b/mm/memory.c index f456f3b5049c..01a23ad48a04 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3563,8 +3563,21 @@ static vm_fault_t remove_device_exclusive_entry(struct vm_fault *vmf) struct vm_area_struct *vma = vmf->vma; struct mmu_notifier_range range; - if (!folio_lock_or_retry(folio, vma->vm_mm, vmf->flags)) + /* + * We need a reference to lock the folio because we don't hold + * the PTL so a racing...

Just a gentle ping on this. Already got the Acked-by from Daniel, but I need some of the nouveau guys to test this since I can only compile test it. Regards, Christian.