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commit: 7f97e61dce9374550e6d8fd4db1fd1773e39ffb9 |
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Author: Mike Pagano <mpagano <AT> gentoo <DOT> org> |
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AuthorDate: Fri Aug 16 12:29:27 2019 +0000 |
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Commit: Mike Pagano <mpagano <AT> gentoo <DOT> org> |
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CommitDate: Fri Aug 16 12:29:27 2019 +0000 |
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URL: https://gitweb.gentoo.org/proj/linux-patches.git/commit/?id=7f97e61d |
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|
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Remove redundant patch (vmalloc) |
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|
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1800_vmalloc-sync-unmappings-fix.patch |
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mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() |
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|
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0000_README | 4 --- |
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1800_vmalloc-sync-unmappings-fix.patch | 58 ---------------------------------- |
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2 files changed, 62 deletions(-) |
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|
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diff --git a/0000_README b/0000_README |
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index 4179af7..eb585a9 100644 |
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--- a/0000_README |
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+++ b/0000_README |
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@@ -87,10 +87,6 @@ Patch: 1510_fs-enable-link-security-restrictions-by-default.patch |
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From: http://sources.debian.net/src/linux/3.16.7-ckt4-3/debian/patches/debian/fs-enable-link-security-restrictions-by-default.patch/ |
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Desc: Enable link security restrictions by default. |
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|
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-Patch: 1800_vmalloc-sync-unmappings-fix.patch |
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-From: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=3f8fd02b1bf1d7ba964485a56f2f4b53ae88c167 |
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-Desc: mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() |
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- |
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Patch: 2000_BT-Check-key-sizes-only-if-Secure-Simple-Pairing-enabled.patch |
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From: https://lore.kernel.org/linux-bluetooth/20190522070540.48895-1-marcel@××××××××.org/raw |
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Desc: Bluetooth: Check key sizes only when Secure Simple Pairing is enabled. See bug #686758 |
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|
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diff --git a/1800_vmalloc-sync-unmappings-fix.patch b/1800_vmalloc-sync-unmappings-fix.patch |
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deleted file mode 100644 |
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index 7e56e51..0000000 |
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--- a/1800_vmalloc-sync-unmappings-fix.patch |
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+++ /dev/null |
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@@ -1,58 +0,0 @@ |
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-From 3f8fd02b1bf1d7ba964485a56f2f4b53ae88c167 Mon Sep 17 00:00:00 2001 |
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-From: Joerg Roedel <jroedel@××××.de> |
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-Date: Fri, 19 Jul 2019 20:46:52 +0200 |
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-Subject: mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() |
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- |
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-On x86-32 with PTI enabled, parts of the kernel page-tables are not shared |
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-between processes. This can cause mappings in the vmalloc/ioremap area to |
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-persist in some page-tables after the region is unmapped and released. |
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- |
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-When the region is re-used the processes with the old mappings do not fault |
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-in the new mappings but still access the old ones. |
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- |
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-This causes undefined behavior, in reality often data corruption, kernel |
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-oopses and panics and even spontaneous reboots. |
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- |
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-Fix this problem by activly syncing unmaps in the vmalloc/ioremap area to |
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-all page-tables in the system before the regions can be re-used. |
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- |
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-References: https://bugzilla.suse.com/show_bug.cgi?id=1118689 |
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-Fixes: 5d72b4fba40ef ('x86, mm: support huge I/O mapping capability I/F') |
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-Signed-off-by: Joerg Roedel <jroedel@××××.de> |
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-Signed-off-by: Thomas Gleixner <tglx@××××××××××.de> |
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-Reviewed-by: Dave Hansen <dave.hansen@×××××××××××.com> |
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-Link: https://lkml.kernel.org/r/20190719184652.11391-4-joro@××××××.org |
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---- |
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- mm/vmalloc.c | 9 +++++++++ |
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- 1 file changed, 9 insertions(+) |
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- |
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-diff --git a/mm/vmalloc.c b/mm/vmalloc.c |
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-index 4fa8d84599b0..e0fc963acc41 100644 |
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---- a/mm/vmalloc.c |
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-+++ b/mm/vmalloc.c |
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-@@ -1258,6 +1258,12 @@ static bool __purge_vmap_area_lazy(unsigned long start, unsigned long end) |
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- if (unlikely(valist == NULL)) |
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- return false; |
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- |
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-+ /* |
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-+ * First make sure the mappings are removed from all page-tables |
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-+ * before they are freed. |
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-+ */ |
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-+ vmalloc_sync_all(); |
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-+ |
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- /* |
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- * TODO: to calculate a flush range without looping. |
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- * The list can be up to lazy_max_pages() elements. |
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-@@ -3038,6 +3044,9 @@ EXPORT_SYMBOL(remap_vmalloc_range); |
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- /* |
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- * Implement a stub for vmalloc_sync_all() if the architecture chose not to |
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- * have one. |
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-+ * |
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-+ * The purpose of this function is to make sure the vmalloc area |
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-+ * mappings are identical in all page-tables in the system. |
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- */ |
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- void __weak vmalloc_sync_all(void) |
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- { |
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--- |
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-cgit 1.2-0.3.lf.el7 |
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- |