commit: 794b5f0c81f864a96d1db09cabd2cefa1ebf7d6c Author: Mike Pagano <mpagano <AT> gentoo <DOT> org> AuthorDate: Sun Jul 11 14:47:25 2021 +0000 Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org> CommitDate: Sun Jul 11 14:47:25 2021 +0000 URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=794b5f0c
Linux patch 4.9.275 Signed-off-by: Mike Pagano <mpagano <AT> gentoo.org> 0000_README | 4 + 1274_linux-4.9.275.patch | 423 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 427 insertions(+) diff --git a/0000_README b/0000_README index 5d3fb76..c18617b 100644 --- a/0000_README +++ b/0000_README @@ -1139,6 +1139,10 @@ Patch: 1273_linux-4.9.274.patch From: http://www.kernel.org Desc: Linux 4.9.274 +Patch: 1274_linux-4.9.275.patch +From: http://www.kernel.org +Desc: Linux 4.9.275 + Patch: 1500_XATTR_USER_PREFIX.patch From: https://bugs.gentoo.org/show_bug.cgi?id=470644 Desc: Support for namespace user.pax.* on tmpfs. diff --git a/1274_linux-4.9.275.patch b/1274_linux-4.9.275.patch new file mode 100644 index 0000000..8b636d6 --- /dev/null +++ b/1274_linux-4.9.275.patch @@ -0,0 +1,423 @@ +diff --git a/Makefile b/Makefile +index 3002dfee32314..dfd253648758c 100644 +--- a/Makefile ++++ b/Makefile +@@ -1,6 +1,6 @@ + VERSION = 4 + PATCHLEVEL = 9 +-SUBLEVEL = 274 ++SUBLEVEL = 275 + EXTRAVERSION = + NAME = Roaring Lionus + +diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c +index a2e6a81669e78..94b7798bdea4e 100644 +--- a/drivers/gpu/drm/nouveau/nouveau_bo.c ++++ b/drivers/gpu/drm/nouveau/nouveau_bo.c +@@ -447,7 +447,7 @@ nouveau_bo_sync_for_device(struct nouveau_bo *nvbo) + struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm; + int i; + +- if (!ttm_dma) ++ if (!ttm_dma || !ttm_dma->dma_address) + return; + + /* Don't waste time looping if the object is coherent */ +@@ -467,7 +467,7 @@ nouveau_bo_sync_for_cpu(struct nouveau_bo *nvbo) + struct ttm_dma_tt *ttm_dma = (struct ttm_dma_tt *)nvbo->bo.ttm; + int i; + +- if (!ttm_dma) ++ if (!ttm_dma || !ttm_dma->dma_address) + return; + + /* Don't waste time looping if the object is coherent */ +diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c +index 67a73ea0a615e..5e51a39a0c27e 100644 +--- a/drivers/scsi/sr.c ++++ b/drivers/scsi/sr.c +@@ -216,6 +216,8 @@ static unsigned int sr_get_events(struct scsi_device *sdev) + return DISK_EVENT_EJECT_REQUEST; + else if (med->media_event_code == 2) + return DISK_EVENT_MEDIA_CHANGE; ++ else if (med->media_event_code == 3) ++ return DISK_EVENT_EJECT_REQUEST; + return 0; + } + +diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c +index ea307f40cab19..c6e6b7470cbf6 100644 +--- a/drivers/xen/events/events_base.c ++++ b/drivers/xen/events/events_base.c +@@ -533,6 +533,9 @@ static void xen_irq_lateeoi_locked(struct irq_info *info, bool spurious) + } + + info->eoi_time = 0; ++ ++ /* is_active hasn't been reset yet, do it now. */ ++ smp_store_release(&info->is_active, 0); + do_unmask(info, EVT_MASK_REASON_EOI_PENDING); + } + +@@ -1778,10 +1781,22 @@ static void lateeoi_ack_dynirq(struct irq_data *data) + struct irq_info *info = info_for_irq(data->irq); + evtchn_port_t evtchn = info ? info->evtchn : 0; + +- if (VALID_EVTCHN(evtchn)) { +- do_mask(info, EVT_MASK_REASON_EOI_PENDING); +- ack_dynirq(data); +- } ++ if (!VALID_EVTCHN(evtchn)) ++ return; ++ ++ do_mask(info, EVT_MASK_REASON_EOI_PENDING); ++ ++ if (unlikely(irqd_is_setaffinity_pending(data)) && ++ likely(!irqd_irq_disabled(data))) { ++ do_mask(info, EVT_MASK_REASON_TEMPORARY); ++ ++ clear_evtchn(evtchn); ++ ++ irq_move_masked_irq(data); ++ ++ do_unmask(info, EVT_MASK_REASON_TEMPORARY); ++ } else ++ clear_evtchn(evtchn); + } + + static void lateeoi_mask_ack_dynirq(struct irq_data *data) +diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h +index 8dd365c654780..6417bc845db56 100644 +--- a/include/linux/hugetlb.h ++++ b/include/linux/hugetlb.h +@@ -451,17 +451,6 @@ static inline int hstate_index(struct hstate *h) + return h - hstates; + } + +-pgoff_t __basepage_index(struct page *page); +- +-/* Return page->index in PAGE_SIZE units */ +-static inline pgoff_t basepage_index(struct page *page) +-{ +- if (!PageCompound(page)) +- return page->index; +- +- return __basepage_index(page); +-} +- + extern int dissolve_free_huge_pages(unsigned long start_pfn, + unsigned long end_pfn); + static inline bool hugepage_migration_supported(struct hstate *h) +@@ -529,10 +518,6 @@ static inline unsigned int pages_per_huge_page(struct hstate *h) + #define hstate_index_to_shift(index) 0 + #define hstate_index(h) 0 + +-static inline pgoff_t basepage_index(struct page *page) +-{ +- return page->index; +-} + #define dissolve_free_huge_pages(s, e) 0 + #define hugepage_migration_supported(h) false + +diff --git a/include/linux/mmdebug.h b/include/linux/mmdebug.h +index 451a811f48f26..d1fb3bbff37ad 100644 +--- a/include/linux/mmdebug.h ++++ b/include/linux/mmdebug.h +@@ -36,10 +36,22 @@ void dump_mm(const struct mm_struct *mm); + BUG(); \ + } \ + } while (0) +-#define VM_WARN_ON(cond) WARN_ON(cond) +-#define VM_WARN_ON_ONCE(cond) WARN_ON_ONCE(cond) +-#define VM_WARN_ONCE(cond, format...) WARN_ONCE(cond, format) +-#define VM_WARN(cond, format...) WARN(cond, format) ++#define VM_WARN_ON_ONCE_PAGE(cond, page) ({ \ ++ static bool __section(".data.once") __warned; \ ++ int __ret_warn_once = !!(cond); \ ++ \ ++ if (unlikely(__ret_warn_once && !__warned)) { \ ++ dump_page(page, "VM_WARN_ON_ONCE_PAGE(" __stringify(cond)")");\ ++ __warned = true; \ ++ WARN_ON(1); \ ++ } \ ++ unlikely(__ret_warn_once); \ ++}) ++ ++#define VM_WARN_ON(cond) (void)WARN_ON(cond) ++#define VM_WARN_ON_ONCE(cond) (void)WARN_ON_ONCE(cond) ++#define VM_WARN_ONCE(cond, format...) (void)WARN_ONCE(cond, format) ++#define VM_WARN(cond, format...) (void)WARN(cond, format) + #else + #define VM_BUG_ON(cond) BUILD_BUG_ON_INVALID(cond) + #define VM_BUG_ON_PAGE(cond, page) VM_BUG_ON(cond) +@@ -47,6 +59,7 @@ void dump_mm(const struct mm_struct *mm); + #define VM_BUG_ON_MM(cond, mm) VM_BUG_ON(cond) + #define VM_WARN_ON(cond) BUILD_BUG_ON_INVALID(cond) + #define VM_WARN_ON_ONCE(cond) BUILD_BUG_ON_INVALID(cond) ++#define VM_WARN_ON_ONCE_PAGE(cond, page) BUILD_BUG_ON_INVALID(cond) + #define VM_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond) + #define VM_WARN(cond, format...) BUILD_BUG_ON_INVALID(cond) + #endif +diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h +index 35f4c4d9c4054..8672291633ddf 100644 +--- a/include/linux/pagemap.h ++++ b/include/linux/pagemap.h +@@ -374,7 +374,7 @@ static inline struct page *read_mapping_page(struct address_space *mapping, + } + + /* +- * Get index of the page with in radix-tree ++ * Get index of the page within radix-tree (but not for hugetlb pages). + * (TODO: remove once hugetlb pages will have ->index in PAGE_SIZE) + */ + static inline pgoff_t page_to_index(struct page *page) +@@ -393,15 +393,16 @@ static inline pgoff_t page_to_index(struct page *page) + return pgoff; + } + ++extern pgoff_t hugetlb_basepage_index(struct page *page); ++ + /* +- * Get the offset in PAGE_SIZE. +- * (TODO: hugepage should have ->index in PAGE_SIZE) ++ * Get the offset in PAGE_SIZE (even for hugetlb pages). ++ * (TODO: hugetlb pages should have ->index in PAGE_SIZE) + */ + static inline pgoff_t page_to_pgoff(struct page *page) + { +- if (unlikely(PageHeadHuge(page))) +- return page->index << compound_order(page); +- ++ if (unlikely(PageHuge(page))) ++ return hugetlb_basepage_index(page); + return page_to_index(page); + } + +diff --git a/kernel/futex.c b/kernel/futex.c +index 324fb85c89049..b3823736af6f9 100644 +--- a/kernel/futex.c ++++ b/kernel/futex.c +@@ -717,7 +717,7 @@ again: + + key->both.offset |= FUT_OFF_INODE; /* inode-based key */ + key->shared.i_seq = get_inode_sequence_number(inode); +- key->shared.pgoff = basepage_index(tail); ++ key->shared.pgoff = page_to_pgoff(tail); + rcu_read_unlock(); + } + +diff --git a/kernel/kthread.c b/kernel/kthread.c +index 60f54c5a07a46..52b89c582189b 100644 +--- a/kernel/kthread.c ++++ b/kernel/kthread.c +@@ -952,8 +952,38 @@ void kthread_flush_work(struct kthread_work *work) + EXPORT_SYMBOL_GPL(kthread_flush_work); + + /* +- * This function removes the work from the worker queue. Also it makes sure +- * that it won't get queued later via the delayed work's timer. ++ * Make sure that the timer is neither set nor running and could ++ * not manipulate the work list_head any longer. ++ * ++ * The function is called under worker->lock. The lock is temporary ++ * released but the timer can't be set again in the meantime. ++ */ ++static void kthread_cancel_delayed_work_timer(struct kthread_work *work, ++ unsigned long *flags) ++{ ++ struct kthread_delayed_work *dwork = ++ container_of(work, struct kthread_delayed_work, work); ++ struct kthread_worker *worker = work->worker; ++ ++ /* ++ * del_timer_sync() must be called to make sure that the timer ++ * callback is not running. The lock must be temporary released ++ * to avoid a deadlock with the callback. In the meantime, ++ * any queuing is blocked by setting the canceling counter. ++ */ ++ work->canceling++; ++ spin_unlock_irqrestore(&worker->lock, *flags); ++ del_timer_sync(&dwork->timer); ++ spin_lock_irqsave(&worker->lock, *flags); ++ work->canceling--; ++} ++ ++/* ++ * This function removes the work from the worker queue. ++ * ++ * It is called under worker->lock. The caller must make sure that ++ * the timer used by delayed work is not running, e.g. by calling ++ * kthread_cancel_delayed_work_timer(). + * + * The work might still be in use when this function finishes. See the + * current_work proceed by the worker. +@@ -961,28 +991,8 @@ EXPORT_SYMBOL_GPL(kthread_flush_work); + * Return: %true if @work was pending and successfully canceled, + * %false if @work was not pending + */ +-static bool __kthread_cancel_work(struct kthread_work *work, bool is_dwork, +- unsigned long *flags) ++static bool __kthread_cancel_work(struct kthread_work *work) + { +- /* Try to cancel the timer if exists. */ +- if (is_dwork) { +- struct kthread_delayed_work *dwork = +- container_of(work, struct kthread_delayed_work, work); +- struct kthread_worker *worker = work->worker; +- +- /* +- * del_timer_sync() must be called to make sure that the timer +- * callback is not running. The lock must be temporary released +- * to avoid a deadlock with the callback. In the meantime, +- * any queuing is blocked by setting the canceling counter. +- */ +- work->canceling++; +- spin_unlock_irqrestore(&worker->lock, *flags); +- del_timer_sync(&dwork->timer); +- spin_lock_irqsave(&worker->lock, *flags); +- work->canceling--; +- } +- + /* + * Try to remove the work from a worker list. It might either + * be from worker->work_list or from worker->delayed_work_list. +@@ -1035,11 +1045,23 @@ bool kthread_mod_delayed_work(struct kthread_worker *worker, + /* Work must not be used with >1 worker, see kthread_queue_work() */ + WARN_ON_ONCE(work->worker != worker); + +- /* Do not fight with another command that is canceling this work. */ ++ /* ++ * Temporary cancel the work but do not fight with another command ++ * that is canceling the work as well. ++ * ++ * It is a bit tricky because of possible races with another ++ * mod_delayed_work() and cancel_delayed_work() callers. ++ * ++ * The timer must be canceled first because worker->lock is released ++ * when doing so. But the work can be removed from the queue (list) ++ * only when it can be queued again so that the return value can ++ * be used for reference counting. ++ */ ++ kthread_cancel_delayed_work_timer(work, &flags); + if (work->canceling) + goto out; ++ ret = __kthread_cancel_work(work); + +- ret = __kthread_cancel_work(work, true, &flags); + fast_queue: + __kthread_queue_delayed_work(worker, dwork, delay); + out: +@@ -1061,7 +1083,10 @@ static bool __kthread_cancel_work_sync(struct kthread_work *work, bool is_dwork) + /* Work must not be used with >1 worker, see kthread_queue_work(). */ + WARN_ON_ONCE(work->worker != worker); + +- ret = __kthread_cancel_work(work, is_dwork, &flags); ++ if (is_dwork) ++ kthread_cancel_delayed_work_timer(work, &flags); ++ ++ ret = __kthread_cancel_work(work); + + if (worker->current_work != work) + goto out_fast; +diff --git a/mm/huge_memory.c b/mm/huge_memory.c +index 14cd0ef33b628..177ca028b9868 100644 +--- a/mm/huge_memory.c ++++ b/mm/huge_memory.c +@@ -1891,7 +1891,7 @@ static void unmap_page(struct page *page) + { + enum ttu_flags ttu_flags = TTU_IGNORE_MLOCK | TTU_IGNORE_ACCESS | + TTU_RMAP_LOCKED; +- int i, ret; ++ int i; + + VM_BUG_ON_PAGE(!PageHead(page), page); + +@@ -1899,15 +1899,16 @@ static void unmap_page(struct page *page) + ttu_flags |= TTU_MIGRATION; + + /* We only need TTU_SPLIT_HUGE_PMD once */ +- ret = try_to_unmap(page, ttu_flags | TTU_SPLIT_HUGE_PMD); +- for (i = 1; !ret && i < HPAGE_PMD_NR; i++) { ++ try_to_unmap(page, ttu_flags | TTU_SPLIT_HUGE_PMD); ++ for (i = 1; i < HPAGE_PMD_NR; i++) { + /* Cut short if the page is unmapped */ + if (page_count(page) == 1) + return; + +- ret = try_to_unmap(page + i, ttu_flags); ++ try_to_unmap(page + i, ttu_flags); + } +- VM_BUG_ON_PAGE(ret, page + i - 1); ++ ++ VM_WARN_ON_ONCE_PAGE(page_mapped(page), page); + } + + static void remap_page(struct page *page) +@@ -2137,7 +2138,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) + struct pglist_data *pgdata = NODE_DATA(page_to_nid(head)); + struct anon_vma *anon_vma = NULL; + struct address_space *mapping = NULL; +- int count, mapcount, extra_pins, ret; ++ int extra_pins, ret; + bool mlocked; + unsigned long flags; + pgoff_t end; +@@ -2200,7 +2201,6 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) + + mlocked = PageMlocked(page); + unmap_page(head); +- VM_BUG_ON_PAGE(compound_mapcount(head), head); + + /* Make sure the page is not on per-CPU pagevec as it takes pin */ + if (mlocked) +@@ -2226,9 +2226,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) + + /* Prevent deferred_split_scan() touching ->_refcount */ + spin_lock(&pgdata->split_queue_lock); +- count = page_count(head); +- mapcount = total_mapcount(head); +- if (!mapcount && page_ref_freeze(head, 1 + extra_pins)) { ++ if (page_ref_freeze(head, 1 + extra_pins)) { + if (!list_empty(page_deferred_list(head))) { + pgdata->split_queue_len--; + list_del(page_deferred_list(head)); +@@ -2239,16 +2237,9 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) + __split_huge_page(page, list, end, flags); + ret = 0; + } else { +- if (IS_ENABLED(CONFIG_DEBUG_VM) && mapcount) { +- pr_alert("total_mapcount: %u, page_count(): %u\n", +- mapcount, count); +- if (PageTail(page)) +- dump_page(head, NULL); +- dump_page(page, "total_mapcount(head) > 0"); +- BUG(); +- } + spin_unlock(&pgdata->split_queue_lock); +-fail: if (mapping) ++fail: ++ if (mapping) + spin_unlock(&mapping->tree_lock); + spin_unlock_irqrestore(zone_lru_lock(page_zone(head)), flags); + remap_page(head); +diff --git a/mm/hugetlb.c b/mm/hugetlb.c +index b7215b0807ca6..de89e9295f6c5 100644 +--- a/mm/hugetlb.c ++++ b/mm/hugetlb.c +@@ -1380,15 +1380,12 @@ int PageHeadHuge(struct page *page_head) + return get_compound_page_dtor(page_head) == free_huge_page; + } + +-pgoff_t __basepage_index(struct page *page) ++pgoff_t hugetlb_basepage_index(struct page *page) + { + struct page *page_head = compound_head(page); + pgoff_t index = page_index(page_head); + unsigned long compound_idx; + +- if (!PageHuge(page_head)) +- return page_index(page); +- + if (compound_order(page_head) >= MAX_ORDER) + compound_idx = page_to_pfn(page) - page_to_pfn(page_head); + else
