[PATCH] afs_proc_cleanup()
B N Poornima
poornima at in.ibm.com
Thu Jan 18 08:53:51 EST 2007
Hi,
This is regarding a bug in the 'kafs' module. Whenever the kafs module
is unloaded, it produces the following stack trace.
********************************************************************
kAFS: Red Hat AFS client v0.1 unregistering.
BUG: at fs/proc/generic.c:732 remove_proc_entry()
[<c0195380>] remove_proc_entry+0x11b/0x175
[<c013b52e>] sys_delete_module+0x1a5/0x1cf
[<c0158bc2>] remove_vma+0x36/0x3b
[<c01594ca>] do_munmap+0x193/0x1ac
[<c0103da0>] syscall_call+0x7/0xb
[<c02a0033>] nf_ip_checksum+0xd4/0xe1
=======================
***************************************************************
The problem is reproducible on the latest rc kernel - 2.6.20-rc5. The
cause of the problem being kafs driver trying to free the /proc/fs/afs
directory which is not empty.
I'm attaching the patch which solves the problem, for review.
- Poornima
-------------- next part --------------
Signed-off-by: B N Poornima <poornima at in.ibm.com>
---
--- fs/afs/proc.org 2007-01-16 18:08:12.016135000 +0530
+++ fs/afs/proc.c 2007-01-16 18:09:02.566135000 +0530
@@ -178,6 +178,8 @@ void afs_proc_cleanup(void)
{
remove_proc_entry("cells", proc_afs);
+ remove_proc_entry("rootcell", proc_afs);
+
remove_proc_entry("fs/afs", NULL);
} /* end afs_proc_cleanup() */
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