From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Mahoney Subject: [patch 07/35] btrfs: avoid NULL deref in btrfs_reserve_extent with DEBUG_ENOSPC Date: Wed, 21 Mar 2012 21:11:11 -0400 Message-ID: <20120322011133.957336170@suse.com> References: <20120322011104.212214639@suse.com> Cc: David Sterba To: Linux Btrfs List Return-path: List-ID: __find_space_info can return NULL but we don't check it before calling dump_space_info(). Signed-off-by: Jeff Mahoney --- fs/btrfs/extent-tree.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 37e0a80..c32a9bf 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -5838,7 +5838,8 @@ again: printk(KERN_ERR "btrfs allocation failed flags %llu, " "wanted %llu\n", (unsigned long long)data, (unsigned long long)num_bytes); - dump_space_info(sinfo, num_bytes, 1); + if (sinfo) + dump_space_info(sinfo, num_bytes, 1); } } -- 1.7.9