+ mm-reversed-logic-in-memblock_discard.patch added to -mm tree

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



The patch titled
     Subject: mm/memblock.c: reversed logic in memblock_discard()
has been added to the -mm tree.  Its filename is
     mm-reversed-logic-in-memblock_discard.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-reversed-logic-in-memblock_discard.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-reversed-logic-in-memblock_discard.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/SubmitChecklist when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Subject: mm/memblock.c: reversed logic in memblock_discard()

In recently introduced memblock_discard() there is a reversed logic bug. 
Memory is freed of static array instead of dynamically allocated one.

Link: http://lkml.kernel.org/r/1503511441-95478-2-git-send-email-pasha.tatashin@xxxxxxxxxx
Fixes: 3010f876500f ("mm: discard memblock data later")
Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Reported-by: Woody Suwalski <terraluna977@xxxxxxxxx>
Tested-by: Woody Suwalski <terraluna977@xxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/memblock.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN mm/memblock.c~mm-reversed-logic-in-memblock_discard mm/memblock.c
--- a/mm/memblock.c~mm-reversed-logic-in-memblock_discard
+++ a/mm/memblock.c
@@ -299,7 +299,7 @@ void __init memblock_discard(void)
 		__memblock_free_late(addr, size);
 	}
 
-	if (memblock.memory.regions == memblock_memory_init_regions) {
+	if (memblock.memory.regions != memblock_memory_init_regions) {
 		addr = __pa(memblock.memory.regions);
 		size = PAGE_ALIGN(sizeof(struct memblock_region) *
 				  memblock.memory.max);
_

Patches currently in -mm which might be from pasha.tatashin@xxxxxxxxxx are

mm-reversed-logic-in-memblock_discard.patch
sparc64-ng4-memset-32-bits-overflow.patch

--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Kernel Archive]     [IETF Annouce]     [DCCP]     [Netdev]     [Networking]     [Security]     [Bugtraq]     [Yosemite]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux SCSI]

  Powered by Linux