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8a0f5ccfb3
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Herbert Xu 8a0f5ccfb3 crypto: deadlock between crypto_alg_sem/rtnl_mutex/genl_mutex 
On Tue, Mar 14, 2017 at 10:44:10AM +0100, Dmitry Vyukov wrote:
>
> Yes, please.
> Disregarding some reports is not a good way long term.

Please try this patch.

---8<---
Subject: netlink: Annotate nlk cb_mutex by protocol

Currently all occurences of nlk->cb_mutex are annotated by lockdep
as a single class.  This causes a false lcokdep cycle involving
genl and crypto_user.

This patch fixes it by dividing cb_mutex into individual classes
based on the netlink protocol.  As genl and crypto_user do not
use the same netlink protocol this breaks the false dependency
loop.

Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-21 14:38:15 -07:00
..
6lowpan 6lowpan: use rb_entry() 2017-01-22 16:46:13 -05:00
9p Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 21:44:35 -08:00
802 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
8021q net: remove ndo_neigh_{construct, destroy} from stacked devices 2017-02-06 11:25:57 -05:00
appletalk lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
atm net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
ax25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
batman-adv Here are two batman-adv bugfixes: 2017-03-16 12:05:38 -07:00
bluetooth net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
bridge bridge: resolve a false alarm of lockdep 2017-03-16 21:29:20 -07:00
caif sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
can can: bcm: fix hrtimer/tasklet termination in bcm op removal 2017-01-30 11:05:04 +01:00
ceph libceph: osd_request_timeout option 2017-03-07 14:30:38 +01:00
core net: properly release sk_frag.page 2017-03-15 15:37:45 -07:00
dcb
dccp dccp: fix memory leak during tear-down of unsuccessful connection request 2017-03-13 22:00:42 -07:00
decnet net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
dns_resolver Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-02-11 02:31:11 -05:00
ethernet Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2017-02-16 21:25:49 -05:00
hsr net/hsr: use eth_hw_addr_random() 2017-02-21 13:25:22 -05:00
ieee802154 lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
ife net: Introduce ife encapsulation module 2017-02-03 15:16:45 -05:00
ipv4 tcp: tcp_get_info() should read tcp_time_stamp later 2017-03-16 21:37:13 -07:00
ipv6 net: ipv6: set route type for anycast routes 2017-03-16 20:40:14 -07:00
ipx ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
irda net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
iucv net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
kcm sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
key
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-02-28 10:00:39 -08:00
l3mdev
lapb Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
llc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-04 17:31:39 -08:00
mac802154 sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h> 2017-03-02 08:42:38 +01:00
mpls net: mpls: Fix nexthop alive tracking on down events 2017-03-16 20:22:18 -07:00
ncsi
netfilter netfilter: nft_ct: do cleanup work when NFTA_CT_DIRECTION is invalid 2017-03-15 17:15:54 +01:00
netlabel netlabel: add CALIPSO to the list of built-in protocols 2017-01-06 22:20:45 -05:00
netlink crypto: deadlock between crypto_alg_sem/rtnl_mutex/genl_mutex 2017-03-21 14:38:15 -07:00
netrom net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
nfc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
openvswitch openvswitch: Add missing case OVS_TUNNEL_KEY_ATTR_PAD 2017-03-16 11:59:46 -07:00
packet net: don't call strlen() on the user buffer in packet_bind_spkt() 2017-03-01 20:55:57 -08:00
phonet net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
psample net: Introduce psample, a new genetlink channel for packet sampling 2017-01-24 13:44:28 -05:00
qrtr net: qrtr: Mark 'buf' as little endian 2017-01-10 20:45:04 -05:00
rds net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rfkill rfkill: remove rfkill-regulator 2017-01-24 11:07:35 +01:00
rose net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rxrpc rxrpc: Ignore BUSY packets on old calls 2017-03-16 21:27:57 -07:00
sched act_connmark: avoid crashing on malformed nlattrs with null parms 2017-03-12 23:32:41 -07:00
sctp net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
smc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
strparser strparser: destroy workqueue on module exit 2017-03-03 20:43:26 -08:00
sunrpc sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
switchdev
tipc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
unix net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
vmw_vsock net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
wimax
wireless nl80211: fix dumpit error path RTNL deadlocks 2017-03-16 10:30:03 +01:00
x25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec 2017-03-07 15:00:37 -08:00
compat.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-02-22 10:15:09 -08:00
Kconfig bpf: make jited programs visible in traces 2017-02-17 13:40:05 -05:00
Makefile net: Introduce ife encapsulation module 2017-02-03 15:16:45 -05:00
socket.c net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
sysctl_net.c