Subject: [merged] jffs2-unlock-f-sem-on-error-in-jffs2_new_inode.patch removed from -mm tree To: andy.wangguoli@xxxxxxxxxx,artem.bityutskiy@xxxxxxxxxxxxxxx,computersforpeace@xxxxxxxxx,dwmw2@xxxxxxxxxxxxx,stable@xxxxxxxxxxxxxxx,wangnan0@xxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Thu, 27 Feb 2014 12:24:04 -0800 The patch titled Subject: jffs2: unlock f->sem on error in jffs2_new_inode() has been removed from the -mm tree. Its filename was jffs2-unlock-f-sem-on-error-in-jffs2_new_inode.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Wang Guoli <andy.wangguoli@xxxxxxxxxx> Subject: jffs2: unlock f->sem on error in jffs2_new_inode() If jffs2_new_inode() succeeds, it returns with f->sem held, and the caller is responsible for releasing the lock. If it fails, it still returns with the lock held, but the caller won't release the lock, which will lead to deadlock. Fix it by releasing the lock in jffs2_new_inode() on error. Signed-off-by: Wang Guoli <andy.wangguoli@xxxxxxxxxx> Signed-off-by: Wang Nan <wangnan0@xxxxxxxxxx> Cc: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxxxxxxxx> Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx> Cc: Wang Guoli <andy.wangguoli@xxxxxxxxxx> Cc: Brian Norris <computersforpeace@xxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # 2.6.34+ Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/jffs2/fs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff -puN fs/jffs2/fs.c~jffs2-unlock-f-sem-on-error-in-jffs2_new_inode fs/jffs2/fs.c --- a/fs/jffs2/fs.c~jffs2-unlock-f-sem-on-error-in-jffs2_new_inode +++ a/fs/jffs2/fs.c @@ -457,12 +457,14 @@ struct inode *jffs2_new_inode (struct in The umask is only applied if there's no default ACL */ ret = jffs2_init_acl_pre(dir_i, inode, &mode); if (ret) { - make_bad_inode(inode); - iput(inode); - return ERR_PTR(ret); + mutex_unlock(&f->sem); + make_bad_inode(inode); + iput(inode); + return ERR_PTR(ret); } ret = jffs2_do_new_inode (c, f, mode, ri); if (ret) { + mutex_unlock(&f->sem); make_bad_inode(inode); iput(inode); return ERR_PTR(ret); @@ -479,6 +481,7 @@ struct inode *jffs2_new_inode (struct in inode->i_size = 0; if (insert_inode_locked(inode) < 0) { + mutex_unlock(&f->sem); make_bad_inode(inode); iput(inode); return ERR_PTR(-EINVAL); _ Patches currently in -mm which might be from andy.wangguoli@xxxxxxxxxx are linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html