Date: Thu, 14 Jan 2016 01:51:18 +0000 (UTC) From: "Pedro F. Giffuni" <pfg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r293867 - stable/9/sys/fs/ext2fs Message-ID: <201601140151.u0E1pIm3092900@repo.freebsd.org>
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Author: pfg Date: Thu Jan 14 01:51:18 2016 New Revision: 293867 URL: https://svnweb.freebsd.org/changeset/base/293867 Log: 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 Modified: stable/9/sys/fs/ext2fs/ext2_vfsops.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/fs/ (props changed) Modified: stable/9/sys/fs/ext2fs/ext2_vfsops.c ============================================================================== --- stable/9/sys/fs/ext2fs/ext2_vfsops.c Thu Jan 14 01:50:06 2016 (r293866) +++ stable/9/sys/fs/ext2fs/ext2_vfsops.c Thu Jan 14 01:51:18 2016 (r293867) @@ -590,7 +590,7 @@ ext2_mountfs(struct vnode *devvp, struct * 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);
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