From 407b5ea098dee26f49d28da49a645b40d8b745d5 Mon Sep 17 00:00:00 2001 From: pfg Date: Thu, 14 Jan 2016 01:50:06 +0000 Subject: MFC r293683: ext4: mount panic from freeing invalid pointers Initialize the struct with those fields to zeroes on allocation, preventing the panic. Patch by: Damjan Jovanovic. PR: 206056 --- sys/fs/ext2fs/ext2_vfsops.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sys/fs') diff --git a/sys/fs/ext2fs/ext2_vfsops.c b/sys/fs/ext2fs/ext2_vfsops.c index ce943ea..5339aa2 100644 --- a/sys/fs/ext2fs/ext2_vfsops.c +++ b/sys/fs/ext2fs/ext2_vfsops.c @@ -590,7 +590,7 @@ ext2_mountfs(struct vnode *devvp, struct mount *mp) * while Linux keeps the super block in a locked buffer. */ ump->um_e2fs = malloc(sizeof(struct m_ext2fs), - M_EXT2MNT, M_WAITOK); + M_EXT2MNT, M_WAITOK | M_ZERO); ump->um_e2fs->e2fs = malloc(sizeof(struct ext2fs), M_EXT2MNT, M_WAITOK); mtx_init(EXT2_MTX(ump), "EXT2FS", "EXT2FS Lock", MTX_DEF); -- cgit v1.1