Date: Thu, 14 Jan 2016 01:50:06 +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-10@freebsd.org Subject: svn commit: r293866 - stable/10/sys/fs/ext2fs Message-ID: <201601140150.u0E1o67J090372@repo.freebsd.org>
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Author: pfg Date: Thu Jan 14 01:50:06 2016 New Revision: 293866 URL: https://svnweb.freebsd.org/changeset/base/293866 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/10/sys/fs/ext2fs/ext2_vfsops.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/fs/ext2fs/ext2_vfsops.c ============================================================================== --- stable/10/sys/fs/ext2fs/ext2_vfsops.c Thu Jan 14 01:42:09 2016 (r293865) +++ stable/10/sys/fs/ext2fs/ext2_vfsops.c Thu Jan 14 01:50:06 2016 (r293866) @@ -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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