Hello, Maneesh.
Maneesh Soni wrote:
> o sysfs_d_iput() is invoked in dentry reclaim path under memory pressure. This
> happens without i_mutex. It also nullifies s_dentry to indicate that
> the associated dentry is evicted. sysfs_readdir() accesses the s_dentry,
> and gets the inode number f
Maneesh Soni wrote:
> I have modified the previous patch (which was dropped from -mm) and now
> keeping
> the statement making s_dentry as NULL in sysfs_d_iput(), so this should
> _safely_ fix sysfs_readdir() oops.
>
If you could find some additional places in sysfs code to add new
BUG()
On Sat, Mar 24, 2007 at 08:35:35AM +0530, Maneesh Soni wrote:
> On Fri, Mar 23, 2007 at 12:43:27PM -0700, Ethan Solomita wrote:
> > I ran stress testing overnight and came up with a similar failure
> > (s_dentry == NULL) but in a different location. A NULL pointer
> > dereference happened in sy
On Tue, Mar 27, 2007 at 11:27:14AM -0700, Ethan Solomita wrote:
> Hi Maneesh -- I will start testing with the patch you provided. If
> you come up with any further issues please let me know. Also, if you
> could
> suggest some additional BUG() lines that I could insert I would
> app
Hi Maneesh -- I will start testing with the patch you provided. If you
come up with any further issues please let me know. Also, if you could
suggest some additional BUG() lines that I could insert I would
appreciate it. Since the bug is hard to reproduce, it may be easier to
catch a race cond
On Fri, Mar 23, 2007 at 12:43:27PM -0700, Ethan Solomita wrote:
> I ran stress testing overnight and came up with a similar failure
> (s_dentry == NULL) but in a different location. A NULL pointer
> dereference happened in sysfs_readdir():
>
> |if (next->s_dentr
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