The patch titled
hugetlbfs: add NULL check in hugetlb_zero_setup()
has been added to the -mm tree. Its filename is
hugetlbfs-add-null-check-in-hugetlb_zero_setup.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: hugetlbfs: add NULL check in hugetlb_zero_setup()
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
If hugetlbfs module_init() fails, hugetlbfs_vfsmount is not initialized and
shmget() with SHM_HUGETLB flag will cause NULL pointer dereference.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Acked-by: William Irwin <wli@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/hugetlbfs/inode.c | 3 +++
1 files changed, 3 insertions(+)
diff -puN fs/hugetlbfs/inode.c~hugetlbfs-add-null-check-in-hugetlb_zero_setup fs/hugetlbfs/inode.c
--- a/fs/hugetlbfs/inode.c~hugetlbfs-add-null-check-in-hugetlb_zero_setup
+++ a/fs/hugetlbfs/inode.c
@@ -746,6 +746,9 @@ struct file *hugetlb_zero_setup(size_t s
char buf[16];
static atomic_t counter;
+ if (!hugetlbfs_vfsmount)
+ return ERR_PTR(-ENOENT);
+
if (!can_do_hugetlb_shm())
return ERR_PTR(-EPERM);
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
origin.patch
git-alsa.patch
git-dvb.patch
auth_gss-unregister-gss_domain-when-unloading-module.patch
fault-injection-disable-stacktrace-filter-for-x86-64.patch
fault-injection-enable-stacktrace-with-dwarf2-unwinder.patch
slob-handle-slab_panic-flag.patch
use-slab_panic-flag-cleanup.patch
fault-injection-fix-failslab-with-config_numa.patch
hugetlbfs-add-null-check-in-hugetlb_zero_setup.patch
simplify-the-stacktrace-code.patch
dtlk-fix-error-checks-in-module_init.patch
sunrpc-fix-error-path-in-module_init.patch
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