Johannes Berg b8273570f8 genetlink: fix netns vs. netlink table locking (2) ... Similar to commit d136f1bd36, there's a bug when unregistering a generic netlink family, which is caught by the might_sleep() added in that commit: BUG: sleeping function called from invalid context at net/netlink/af_netlink.c:183 in_atomic(): 1, irqs_disabled(): 0, pid: 1510, name: rmmod 2 locks held by rmmod/1510: #0: (genl_mutex){+.+.+.}, at: [<ffffffff8138283b>] genl_unregister_family+0x2b/0x130 #1: (rcu_read_lock){.+.+..}, at: [<ffffffff8138270c>] __genl_unregister_mc_group+0x1c/0x120 Pid: 1510, comm: rmmod Not tainted 2.6.31-wl #444 Call Trace: [<ffffffff81044ff9>] __might_sleep+0x119/0x150 [<ffffffff81380501>] netlink_table_grab+0x21/0x100 [<ffffffff813813a3>] netlink_clear_multicast_users+0x23/0x60 [<ffffffff81382761>] __genl_unregister_mc_group+0x71/0x120 [<ffffffff81382866>] genl_unregister_family+0x56/0x130 [<ffffffffa0007d85>] nl80211_exit+0x15/0x20 [cfg80211] [<ffffffffa000005a>] cfg80211_exit+0x1a/0x40 [cfg80211] Fix in the same way by grabbing the netlink table lock before doing rcu_read_lock(). Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: David S. Miller <davem@davemloft.net>		2009-09-24 15:44:05 -07:00
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acpi	Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel	2009-09-24 10:30:41 -07:00
asm-generic	Merge branch 'hwpoison' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6	2009-09-24 07:53:22 -07:00
crypto	…
drm	Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel	2009-09-24 10:30:41 -07:00
keys	…
linux	genetlink: fix netns vs. netlink table locking (2)	2009-09-24 15:44:05 -07:00
math-emu	…
media	V4L/DVB (13019): video: initial support for ADV7180	2009-09-19 00:53:39 -03:00
mtd	…
net	tunnel: eliminate recursion field	2009-09-24 15:39:22 -07:00
pcmcia	…
rdma	trivial: fix typo "to to" in multiple files	2009-09-21 15:14:55 +02:00
rxrpc	…
scsi	trivial: remove unnecessary semicolons	2009-09-21 15:14:58 +02:00
sound	…
trace	Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-23 09:46:15 -07:00
video	davinci-fb-frame-buffer-driver-for-ti-da8xx-omap-l1xx-v4	2009-09-23 07:39:51 -07:00
xen	…
Kbuild	…