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SubjectRe: linux-next: Tree for August 29


On Friday 29 August 2008, Stephen Rothwell wrote:
> Hi all,
> Changes since next-20080828:

All block issuses have been fixed now (thanks guys!)
but the new warning emerged:

sysctl table check failed: /kernel/pty/nr .1.62.2 No data
Pid: 1, comm: swapper Not tainted 2.6.27-rc3-00458-g0ea12ec-dirty #196
[<c012e004>] set_fail+0x30/0x39
[<c012e436>] sysctl_check_table+0x429/0x467
[<c012e44d>] sysctl_check_table+0x440/0x467
[<c012e44d>] sysctl_check_table+0x440/0x467
[<c01206d3>] __register_sysctl_paths+0xab/0x23c
[<c02f8fb9>] mutex_lock+0x15/0x23
[<c015f0ed>] exact_lock+0x0/0xd
[<c012087e>] register_sysctl_paths+0x1a/0x1c
[<c03d8106>] pty_init+0x215/0x293
[<c0101122>] _stext+0x3a/0x12a
[<c03d7ef1>] pty_init+0x0/0x293
[<c018a1a8>] create_proc_entry+0x72/0x84
[<c013ea0d>] register_irq_proc+0x6b/0x84
[<c03c443b>] kernel_init+0x6d/0xb9
[<c03c43ce>] kernel_init+0x0/0xb9
[<c01037f3>] kernel_thread_helper+0x7/0x10

git bisect points at:

commit 0ea12ecc2f11ab28478939a5902505bd47f9b765
Author: Alan Cox <>
Date: Fri Aug 29 09:28:10 2008 +1000


and somehow the following chunk looks suspicious:

--- a/drivers/char/pty.c
+++ b/drivers/char/pty.c
@@ -571,8 +571,11 @@ static void __init unix98_pty_init(void)
if (tty_register_driver(pts_driver))
panic("Couldn't register Unix98 pts driver");

+ /* FIXME: WTF */
+#if 0
pty_table[1].data = &ptm_driver->refcount;
- register_sysctl_table(pty_root_table);
+ register_sysctl_table(pty_root_table);

/* Now create the /dev/ptmx special device */
Unfortunately it cannot be simply reverted so it seems
like WTF part will need some work after all... ;)

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