The patch titled
mm/memblock.c: avoid abuse of RED_INACTIVE
has been added to the -mm tree. Its filename is
mm-memblockc-avoid-abuse-of-red_inactive.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mm/memblock.c: avoid abuse of RED_INACTIVE
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
RED_INACTIVE is a slab thing, and reusing it for memblock was
inappropriate, because memblock is dealing with phys_addr_t's which have a
Kconfigurable sizeof().
Create a new poison type for this application. Fixes the sparse warning
warning: cast truncates bits from constant value (9f911029d74e35b becomes 9d74e35b)
Reported-by: H Hartley Sweeten <hartleys@xxxxxxxxxxxxxxxxxxx>
Tested-by: H Hartley Sweeten <hartleys@xxxxxxxxxxxxxxxxxxx>
Acked-by: Pekka Enberg <penberg@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/poison.h | 6 ++++++
mm/memblock.c | 8 ++++----
2 files changed, 10 insertions(+), 4 deletions(-)
diff -puN include/linux/poison.h~mm-memblockc-avoid-abuse-of-red_inactive include/linux/poison.h
--- a/include/linux/poison.h~mm-memblockc-avoid-abuse-of-red_inactive
+++ a/include/linux/poison.h
@@ -40,6 +40,12 @@
#define RED_INACTIVE 0x09F911029D74E35BULL /* when obj is inactive */
#define RED_ACTIVE 0xD84156C5635688C0ULL /* when obj is active */
+#ifdef CONFIG_PHYS_ADDR_T_64BIT
+#define MEMBLOCK_INACTIVE 0x3a84fb0144c9e71bULL
+#else
+#define MEMBLOCK_INACTIVE 0x44c9e71bUL
+#endif
+
#define SLUB_RED_INACTIVE 0xbb
#define SLUB_RED_ACTIVE 0xcc
diff -puN mm/memblock.c~mm-memblockc-avoid-abuse-of-red_inactive mm/memblock.c
--- a/mm/memblock.c~mm-memblockc-avoid-abuse-of-red_inactive
+++ a/mm/memblock.c
@@ -758,9 +758,9 @@ void __init memblock_analyze(void)
/* Check marker in the unused last array entry */
WARN_ON(memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS].base
- != (phys_addr_t)RED_INACTIVE);
+ != MEMBLOCK_INACTIVE);
WARN_ON(memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS].base
- != (phys_addr_t)RED_INACTIVE);
+ != MEMBLOCK_INACTIVE);
memblock.memory_size = 0;
@@ -786,8 +786,8 @@ void __init memblock_init(void)
memblock.reserved.max = INIT_MEMBLOCK_REGIONS;
/* Write a marker in the unused last array entry */
- memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
- memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = (phys_addr_t)RED_INACTIVE;
+ memblock.memory.regions[INIT_MEMBLOCK_REGIONS].base = MEMBLOCK_INACTIVE;
+ memblock.reserved.regions[INIT_MEMBLOCK_REGIONS].base = MEMBLOCK_INACTIVE;
/* Create a dummy zero size MEMBLOCK which will get coalesced away later.
* This simplifies the memblock_add() code below...
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
memcg-fix-reclaimable-lru-check-in-memcg-checkpatch-fixes.patch
memcg-fix-reclaimable-lru-check-in-memcg-fix.patch
memcg-fix-numa-scan-information-update-to-be-triggered-by-memory-event-fix.patch
mm-preallocate-page-before-lock_page-at-filemap-cow-fix.patch
w1-ds1wm-add-a-reset-recovery-parameter-checkpatch-fixes.patch
linux-next.patch
linux-next-git-rejects.patch
drivers-staging-makefile-cs5535_gpio-went-away.patch
i-need-old-gcc.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
cris-fix-a-build-error-in-kernel-forkc-checkpatch-fixes.patch
arch-x86-platform-iris-irisc-register-a-platform-device-and-a-platform-driver-fix.patch
arch-x86-include-asm-delayh-fix-udelay-and-ndelay-for-8-bit-args.patch
drivers-net-skgec-support-dlink-dge-530t-rev-c1.patch
pci-enumerate-the-pci-device-only-removed-out-pci-hierarchy-of-os-when-re-scanning-pci-fix.patch
drivers-staging-speakup-devsynthc-fix-buffer-size-is-not-provably-correct-error.patch
drivers-staging-gma500-psb_intel_displayc-fix-build.patch
drivers-staging-dt3155v4l-dt3155v4lc-needs-slabh.patch
drivers-staging-solo6x10-corec-needs-slabh.patch
drivers-staging-solo6x10-p2mc-needs-slabh.patch
staging-more-missing-slabh-inclusions.patch
slab-use-numa_no_node.patch
mm.patch
mm-extend-memory-hotplug-api-to-allow-memory-hotplug-in-virtual-machines-fix.patch
pagewalk-add-locking-rule-comments-fix.patch
mm-memoryc-remove-zap_block_size.patch
mm-memblockc-avoid-abuse-of-red_inactive.patch
frv-duplicate-output_buffer-of-e03-checkpatch-fixes.patch
hpet-factor-timer-allocate-from-open.patch
drivers-misc-add-support-the-fsa9480-usb-switch-fix.patch
leds-route-kbd-leds-through-the-generic-leds-layer.patch
checkpatch-suggest-using-min_t-or-max_t-v2.patch
checkpatch-add-a-prefer-__aligned-check.patch
lib-hexdumpc-make-hex2bin-return-the-updated-src-address.patch
fs-binfmt_miscc-use-kernels-hex_to_bin-method-fix.patch
fs-binfmt_miscc-use-kernels-hex_to_bin-method-fix-fix.patch
init-skip-calibration-delay-if-previously-done-fix.patch
init-skip-calibration-delay-if-previously-done-fix-fix.patch
init-skip-calibration-delay-if-previously-done-4.patch
drivers-rtc-add-support-for-qualcomm-pmic8xxx-rtc-fix.patch
cpusets-randomize-node-rotor-used-in-cpuset_mem_spread_node.patch
cpusets-randomize-node-rotor-used-in-cpuset_mem_spread_node-fix-2.patch
cpusets-randomize-node-rotor-used-in-cpuset_mem_spread_node-cpusets-initialize-spread-rotor-lazily-fix.patch
h8300-m68k-xtensa-__fd_isset-should-return-0-1.patch
proc-pid-fdinfo-add-cloexec-information-fix.patch
ipc-introduce-shm_rmid_forced-sysctl-fix.patch
ipc-introduce-shm_rmid_forced-sysctl-fix-2.patch
ipc-introduce-shm_rmid_forced-sysctl-cleanup.patch
ipc-introduce-shm_rmid_forced-sysctl-comments-fix.patch
ipc-introduce-shm_rmid_forced-sysctl-testing.patch
scatterlist-new-helper-functions.patch
scatterlist-new-helper-functions-update-fix.patch
kexec-remove-kmsg_dump_kexec.patch
ramoops-use-module-parameters-instead-of-platform-data-if-not-available-checkpatch-fixes.patch
journal_add_journal_head-debug.patch
mutex-subsystem-synchro-test-module-fix.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
memblock-add-input-size-checking-to-memblock_find_region.patch
memblock-add-input-size-checking-to-memblock_find_region-fix.patch
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