The patch titled
percpu: avoid calling __pcpu_ptr_to_addr(NULL)
has been removed from the -mm tree. Its filename was
percpu-avoid-calling-__pcpu_ptr_to_addrnull.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: percpu: avoid calling __pcpu_ptr_to_addr(NULL)
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
__pcpu_ptr_to_addr() can be overridden by the architecture and might not
behave well if passed a NULL pointer. So avoid calling it until we have
verified that its arg is not NULL.
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Kamalesh Babulal <kamalesh@xxxxxxxxxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/percpu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN mm/percpu.c~percpu-avoid-calling-__pcpu_ptr_to_addrnull mm/percpu.c
--- a/mm/percpu.c~percpu-avoid-calling-__pcpu_ptr_to_addrnull
+++ a/mm/percpu.c
@@ -1271,7 +1271,7 @@ static void pcpu_reclaim(struct work_str
*/
void free_percpu(void *ptr)
{
- void *addr = __pcpu_ptr_to_addr(ptr);
+ void *addr;
struct pcpu_chunk *chunk;
unsigned long flags;
int off;
@@ -1279,6 +1279,8 @@ void free_percpu(void *ptr)
if (!ptr)
return;
+ addr = __pcpu_ptr_to_addr(ptr);
+
spin_lock_irqsave(&pcpu_lock, flags);
chunk = pcpu_chunk_addr_search(addr);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
next-remove-localversion.patch
i-need-old-gcc.patch
revert-input-wistron_btns-switch-to-using-sparse-keymap-library.patch
drivers-media-video-cx23885-needs-kfifo-conversion.patch
drivers-gpu-drm-radeon-radeon_combiosc-fix-warning.patch
drivers-media-video-pmsc-needs-versionh.patch
timer-stats-fix-del_timer_sync-and-try_to_del_timer_sync.patch
3x59x-fix-pci-resource-management.patch
fs-improve-remountro-vs-buffercache-coherency.patch
mm-avoid-false-sharing-of-mm_counter-checkpatch-fixes.patch
mm-count-swap-usage-checkpatch-fixes.patch
mm-add-lowmem-detection-logic-fix.patch
mm-count-lowmem-rss-checkpatch-fixes.patch
frv-duplicate-output_buffer-of-e03-checkpatch-fixes.patch
mm-pass-mm-flags-as-a-coredump-parameter-for-consistency-fix.patch
memcg-move-charges-of-anonymous-page-cleanup.patch
memcg-implement-memory-thresholds-checkpatch-fixes.patch
reiser4-export-remove_from_page_cache-fix.patch
reiser4.patch
reiser4-remove-simple_prepare_write-usage-checkpatch-fixes.patch
fs-reiser4-contextc-current_is_pdflush-got-removed.patch
reiser4-fix.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
getblk-handle-2tb-devices.patch
getblk-handle-2tb-devices-fix.patch
undeprecate-pci_find_device.patch
notify_change-callers-must-hold-i_mutex.patch
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