/*****************************************************************************
 * xenbus.h
 *
 * Xenbus protocol details.
 *
 * Copyright (C) 2005 XenSource Ltd.
 */

#ifndef _XEN_PUBLIC_IO_XENBUS_H
#define _XEN_PUBLIC_IO_XENBUS_H

/* The state of either end of the Xenbus, i.e. the current communication
   status of initialisation across the bus.  States here imply nothing about
   the state of the connection between the driver and the kernel's device
   layers.  */
enum xenbus_state
{
	XenbusStateUnknown      = 0,
	XenbusStateInitialising = 1,
	XenbusStateInitWait     = 2,  /* Finished early
					 initialisation, but waiting
					 for information from the peer
					 or hotplug scripts. */
	XenbusStateInitialised  = 3,  /* Initialised and waiting for a
					 connection from the peer. */
	XenbusStateConnected    = 4,
	XenbusStateClosing      = 5,  /* The device is being closed
					 due to an error or an unplug
					 event. */
	XenbusStateClosed       = 6,

	/*
	* Reconfiguring: The device is being reconfigured.
	*/
	XenbusStateReconfiguring = 7,

	XenbusStateReconfigured  = 8
};

#endif /* _XEN_PUBLIC_IO_XENBUS_H */

/*
 * Local variables:
 *  c-file-style: "linux"
 *  indent-tabs-mode: t
 *  c-indent-level: 8
 *  c-basic-offset: 8
 *  tab-width: 8
 * End:
 */
lue='packet-loop-back'>packet-loop-back</option>
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<tr><td class='sub'>net-next plumbings</td><td class='sub right'>Tobias Klauser</td></tr></table>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/chipidea?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>chipidea</a>/<a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/chipidea/ci_hdrc_zevio.c?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>ci_hdrc_zevio.c</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='07cd12945551b63ecb1a349d50a6d69d1d6feb4a'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>committer</th><td>Tejun Heo &lt;tj@kernel.org&gt;</td><td class='right'>2017-01-26 16:47:28 -0500</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/chipidea/ci_hdrc_zevio.c?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>07cd12945551b63ecb1a349d50a6d69d1d6feb4a</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/chipidea/ci_hdrc_zevio.c?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>patch</a>)</td></tr>
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<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/chipidea/ci_hdrc_zevio.c?id=7ce7d89f48834cefece7804d38fc5d85382edf77'>7ce7d89f48834cefece7804d38fc5d85382edf77</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/chipidea/ci_hdrc_zevio.c?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a&amp;id2=7ce7d89f48834cefece7804d38fc5d85382edf77'>diff</a>)</td></tr></table>
<div class='commit-subject'>cgroup: don't online subsystems before cgroup_name/path() are operational</div><div class='commit-msg'>While refactoring cgroup creation, a5bca2152036 ("cgroup: factor out
cgroup_create() out of cgroup_mkdir()") incorrectly onlined subsystems
before the new cgroup is associated with it kernfs_node.  This is fine
for cgroup proper but cgroup_name/path() depend on the associated
kernfs_node and if a subsystem makes the new cgroup_subsys_state
visible, which they're allowed to after onlining, it can lead to NULL
dereference.

The current code performs cgroup creation and subsystem onlining in
cgroup_create() and cgroup_mkdir() makes the cgroup and subsystems
visible afterwards.  There's no reason to online the subsystems early
and we can simply drop cgroup_apply_control_enable() call from
cgroup_create() so that the subsystems are onlined and made visible at
the same time.

Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
Reported-by: Konstantin Khlebnikov &lt;khlebnikov@yandex-team.ru&gt;
Fixes: a5bca2152036 ("cgroup: factor out cgroup_create() out of cgroup_mkdir()") 
Cc: stable@vger.kernel.org # v4.6+
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=07cd12945551b63ecb1a349d50a6d69d1d6feb4a'>Diffstat</a> (limited to 'drivers/usb/chipidea/ci_hdrc_zevio.c')</div><table summary='diffstat' class='diffstat'>