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authorTakeshi Misawa <jeliantsurux@gmail.com>2018-12-09 08:30:15 +0300
committerMiklos Szeredi <mszeredi@redhat.com>2018-12-10 11:57:54 +0300
commitd72f70da60de1af4bfd0f0a3d0ecbc28eea07679 (patch)
tree307d66ce28df8bc8a8d79e4579459fd621e1d843 /fs
parentd233c7dd1682437ba4b430b04766aa6eef9aef67 (diff)
downloadlinux-d72f70da60de1af4bfd0f0a3d0ecbc28eea07679.tar.xz
fuse: Fix memory leak in fuse_dev_free()
When ntfs is unmounted, the following leak is reported by kmemleak. kmemleak report: unreferenced object 0xffff880052bf4400 (size 4096): comm "mount.ntfs", pid 16530, jiffies 4294861127 (age 3215.836s) hex dump (first 32 bytes): 00 44 bf 52 00 88 ff ff 00 44 bf 52 00 88 ff ff .D.R.....D.R.... 10 44 bf 52 00 88 ff ff 10 44 bf 52 00 88 ff ff .D.R.....D.R.... backtrace: [<00000000bf4a2f8d>] fuse_fill_super+0xb22/0x1da0 [fuse] [<000000004dde0f0c>] mount_bdev+0x263/0x320 [<0000000025aebc66>] mount_fs+0x82/0x2bf [<0000000042c5a6be>] vfs_kern_mount.part.33+0xbf/0x480 [<00000000ed10cd5b>] do_mount+0x3de/0x2ad0 [<00000000d59ff068>] ksys_mount+0xba/0xd0 [<000000001bda1bcc>] __x64_sys_mount+0xba/0x150 [<00000000ebe26304>] do_syscall_64+0x151/0x490 [<00000000d25f2b42>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [<000000002e0abd2c>] 0xffffffffffffffff fuse_dev_alloc() allocate fud->pq.processing. But this hash table is not freed. Fix this by freeing fud->pq.processing. Signed-off-by: Takeshi Misawa <jeliantsurux@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Fixes: be2ff42c5d6e ("fuse: Use hash table to link processing request")
Diffstat (limited to 'fs')
-rw-r--r--fs/fuse/inode.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 073865371f9b..568abed20eb2 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -1068,6 +1068,7 @@ void fuse_dev_free(struct fuse_dev *fud)
fuse_conn_put(fc);
}
+ kfree(fud->pq.processing);
kfree(fud);
}
EXPORT_SYMBOL_GPL(fuse_dev_free);