Marko Rauhamaa <marko.rauhamaa@xxxxxxxxxxxx>:
> Amir Goldstein <amir73il@xxxxxxxxx>:
> I have narrowed the problem down a bit in the kernel. The hanging
> function is "user_path_at":
>
> user_path_at(filename="/sshome/test/user/", lookup_flags=0x1)
> called from: fanotify_find_path()
> called from: fanotify_mark()
>
> And Ctrl-C wakes it up.
I have dug a bit deeper. What hangs is this statement:
mnt = path->dentry->d_op->d_automount(path);
in:
follow_automount() // fs/namei.c
called from: follow_managed()
called from: walk_component()
called from: lookup_last()
called from: path_lookupat()
called from: filename_lookup()
called from: user_path_at_empty()
called from: user_path_at(filename="/sshome/test/user/", lookup_flags=0x1)
called from: fanotify_find_path() // fs/notify/fanotify_user.c
called from: fanotify_mark()
And Ctrl-C wakes it up.
The d_automount() method is bound to autofs4_d_automount() in
fs/autofs4/root.c. The hanging statement is:
wait_event_interruptible(wq->queue, wq->name.name == NULL);
in:
autofs4_wait() // fs/autofs4/waitq.c
called from: autofs4_mount_wait() // fs/autofs4/root.c
called from: autofs4_d_automount()
Marko
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