It's possible that the caller of sysfs_remove_group messed up and passed in an
attribute group that was not really registered to this kobject. But don't
panic for such a foolish error, spit out a warning about what happened, and
continue on our way safely.
Cc: Roland Dreier <[EMAIL PROTECTED]>
Cc: Tejun Heo <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
fs/sysfs/group.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 0871c3d..4779049 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -77,7 +77,12 @@ void sysfs_remove_group(struct kobject * kobj,
if (grp->name) {
sd = sysfs_get_dirent(dir_sd, grp->name);
- BUG_ON(!sd);
+ if (!sd) {
+ printk(KERN_WARNING "sysfs group %p not found for "
+ "kobject '%s'\n", grp, kobject_name(kobj));
+ WARN_ON(!sd);
+ return;
+ }
} else
sd = sysfs_get(dir_sd);
--
1.5.4
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