linux-stable.git/net/llc, branch linux-3.19.y Linux kernel stable tree net: llc: use correct size for sysctl timeout entries 2015-01-25T08:23:21+00:00 Sasha Levin sasha.levin@oracle.com 2015-01-24T01:47:00+00:00 6b8d9117ccb4f81b1244aafa7bc70ef8fa45fc49 The timeout entries are sizeof(int) rather than sizeof(long), which means that when they were getting read we'd also leak kernel memory to userspace along with the timeout values. Signed-off-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
The timeout entries are sizeof(int) rather than sizeof(long), which
means that when they were getting read we'd also leak kernel memory
to userspace along with the timeout values.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
llc: Make llc_sap_action_t function pointer arrays const 2014-12-10T20:21:24+00:00 Joe Perches joe@perches.com 2014-12-10T17:55:50+00:00 22bbf5f3e4e4db4a94f18d7b1ba21b5bd5fd934b It's better when function pointer arrays aren't modifiable. Net change: $ size net/llc/built-in.o.* text data bss dec hex filename 61193 12758 1344 75295 1261f net/llc/built-in.o.new 47113 27030 1344 75487 126df net/llc/built-in.o.old Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
It's better when function pointer arrays aren't modifiable.

Net change:

$ size net/llc/built-in.o.*
   text	   data	    bss	    dec	    hex	filename
  61193	  12758	   1344	  75295	  1261f	net/llc/built-in.o.new
  47113	  27030	   1344	  75487	  126df	net/llc/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
llc: Make llc_conn_ev_qfyr_t function pointer arrays const 2014-12-10T20:21:24+00:00 Joe Perches joe@perches.com 2014-12-10T17:43:57+00:00 9b373069350d747c4e7ad7ea59f0fa348e860383 It's better when function pointer arrays aren't modifiable. Net change from original: $ size net/llc/built-in.o.* text data bss dec hex filename 61065 12886 1344 75295 1261f net/llc/built-in.o.new 47113 27030 1344 75487 126df net/llc/built-in.o.old Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
It's better when function pointer arrays aren't modifiable.

Net change from original:

$ size net/llc/built-in.o.*
   text	   data	    bss	    dec	    hex	filename
  61065	  12886	   1344	  75295	  1261f	net/llc/built-in.o.new
  47113	  27030	   1344	  75487	  126df	net/llc/built-in.o.old

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
llc: Make function pointer arrays const 2014-12-10T20:21:24+00:00 Joe Perches joe@perches.com 2014-12-10T16:18:50+00:00 14b7d95fd2288524c71aac48f3f7309fa6afa853 It's better when function pointer arrays aren't modifiable. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
It's better when function pointer arrays aren't modifiable.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
new helper: memcpy_from_msg() 2014-11-24T09:28:48+00:00 Al Viro viro@zeniv.linux.org.uk 2014-04-07T01:25:44+00:00 6ce8e9ce5989ae13f493062975304700be86d20e Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
net: Add and use skb_copy_datagram_msg() helper. 2014-11-05T21:46:40+00:00 David S. Miller davem@davemloft.net 2014-11-05T21:46:40+00:00 51f3d02b980a338cd291d2bc7629cdfb2568424b This encapsulates all of the skb_copy_datagram_iovec() callers with call argument signature "skb, offset, msghdr->msg_iov, length". When we move to iov_iters in the networking, the iov_iter object will sit in the msghdr. Having a helper like this means there will be less places to touch during that transformation. Based upon descriptions and patch from Al Viro. Signed-off-by: David S. Miller <davem@davemloft.net> 
This encapsulates all of the skb_copy_datagram_iovec() callers
with call argument signature "skb, offset, msghdr->msg_iov, length".

When we move to iov_iters in the networking, the iov_iter object will
sit in the msghdr.

Having a helper like this means there will be less places to touch
during that transformation.

Based upon descriptions and patch from Al Viro.

Signed-off-by: David S. Miller <davem@davemloft.net>
net: llc: include linux/errno.h instead of asm/errno.h 2014-10-24T19:51:42+00:00 Fabian Frederick fabf@skynet.be 2014-10-22T19:06:26+00:00 74bca138e1351a0da5ce9c2936bbccdd0d4e2225 Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: David S. Miller <davem@davemloft.net> 
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
net_dma: simple removal 2014-09-28T14:05:16+00:00 Dan Williams dan.j.williams@intel.com 2013-12-30T20:37:29+00:00 7bced397510ab569d31de4c70b39e13355046387 Per commit "77873803363c net_dma: mark broken" net_dma is no longer used and there is no plan to fix it. This is the mechanical removal of bits in CONFIG_NET_DMA ifdef guards. Reverting the remainder of the net_dma induced changes is deferred to subsequent patches. Marked for stable due to Roman's report of a memory leak in dma_pin_iovec_pages(): https://lkml.org/lkml/2014/9/3/177 Cc: Dave Jiang <dave.jiang@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: David Whipple <whipple@securedatainnovations.ch> Cc: Alexander Duyck <alexander.h.duyck@intel.com> Cc: <stable@vger.kernel.org> Reported-by: Roman Gushchin <klamm@yandex-team.ru> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: Dan Williams <dan.j.williams@intel.com> 
Per commit "77873803363c net_dma: mark broken" net_dma is no longer used
and there is no plan to fix it.

This is the mechanical removal of bits in CONFIG_NET_DMA ifdef guards.
Reverting the remainder of the net_dma induced changes is deferred to
subsequent patches.

Marked for stable due to Roman's report of a memory leak in
dma_pin_iovec_pages():

    https://lkml.org/lkml/2014/9/3/177

Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: David Whipple <whipple@securedatainnovations.ch>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Cc: <stable@vger.kernel.org>
Reported-by: Roman Gushchin <klamm@yandex-team.ru>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
llc: remove noisy WARN from llc_mac_hdr_init 2014-01-29T02:01:32+00:00 Dave Jones davej@redhat.com 2014-01-28T21:30:52+00:00 0f1a24c9a9f4682dd61f5c39b9952f915c5e952c Sending malformed llc packets triggers this spew, which seems excessive. WARNING: CPU: 1 PID: 6917 at net/llc/llc_output.c:46 llc_mac_hdr_init+0x85/0x90 [llc]() device type not supported: 0 CPU: 1 PID: 6917 Comm: trinity-c1 Not tainted 3.13.0+ #95 0000000000000009 00000000007e257d ffff88009232fbe8 ffffffffac737325 ffff88009232fc30 ffff88009232fc20 ffffffffac06d28d ffff88020e07f180 ffff88009232fec0 00000000000000c8 0000000000000000 ffff88009232fe70 Call Trace: [<ffffffffac737325>] dump_stack+0x4e/0x7a [<ffffffffac06d28d>] warn_slowpath_common+0x7d/0xa0 [<ffffffffac06d30c>] warn_slowpath_fmt+0x5c/0x80 [<ffffffffc01736d5>] llc_mac_hdr_init+0x85/0x90 [llc] [<ffffffffc0173759>] llc_build_and_send_ui_pkt+0x79/0x90 [llc] [<ffffffffc057cdba>] llc_ui_sendmsg+0x23a/0x400 [llc2] [<ffffffffac605d8c>] sock_sendmsg+0x9c/0xe0 [<ffffffffac185a37>] ? might_fault+0x47/0x50 [<ffffffffac606321>] SYSC_sendto+0x121/0x1c0 [<ffffffffac011847>] ? syscall_trace_enter+0x207/0x270 [<ffffffffac6071ce>] SyS_sendto+0xe/0x10 [<ffffffffac74aaa4>] tracesys+0xdd/0xe2 Until 2009, this was a printk, when it was changed in bf9ae5386bc: "llc: use dev_hard_header". Let userland figure out what -EINVAL means by itself. Signed-off-by: Dave Jones <davej@fedoraproject.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
Sending malformed llc packets triggers this spew, which seems excessive.

WARNING: CPU: 1 PID: 6917 at net/llc/llc_output.c:46 llc_mac_hdr_init+0x85/0x90 [llc]()
device type not supported: 0
CPU: 1 PID: 6917 Comm: trinity-c1 Not tainted 3.13.0+ #95
 0000000000000009 00000000007e257d ffff88009232fbe8 ffffffffac737325
 ffff88009232fc30 ffff88009232fc20 ffffffffac06d28d ffff88020e07f180
 ffff88009232fec0 00000000000000c8 0000000000000000 ffff88009232fe70
Call Trace:
 [<ffffffffac737325>] dump_stack+0x4e/0x7a
 [<ffffffffac06d28d>] warn_slowpath_common+0x7d/0xa0
 [<ffffffffac06d30c>] warn_slowpath_fmt+0x5c/0x80
 [<ffffffffc01736d5>] llc_mac_hdr_init+0x85/0x90 [llc]
 [<ffffffffc0173759>] llc_build_and_send_ui_pkt+0x79/0x90 [llc]
 [<ffffffffc057cdba>] llc_ui_sendmsg+0x23a/0x400 [llc2]
 [<ffffffffac605d8c>] sock_sendmsg+0x9c/0xe0
 [<ffffffffac185a37>] ? might_fault+0x47/0x50
 [<ffffffffac606321>] SYSC_sendto+0x121/0x1c0
 [<ffffffffac011847>] ? syscall_trace_enter+0x207/0x270
 [<ffffffffac6071ce>] SyS_sendto+0xe/0x10
 [<ffffffffac74aaa4>] tracesys+0xdd/0xe2

Until 2009, this was a printk, when it was changed in
bf9ae5386bc: "llc: use dev_hard_header".

Let userland figure out what -EINVAL means by itself.

Signed-off-by: Dave Jones <davej@fedoraproject.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
net: add build-time checks for msg->msg_name size 2014-01-19T07:04:16+00:00 Steffen Hurrle steffen@hurrle.net 2014-01-17T21:53:15+00:00 342dfc306fb32155314dad277f3c3686b83fb9f1 This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg handler msg_name and msg_namelen logic"). DECLARE_SOCKADDR validates that the structure we use for writing the name information to is not larger than the buffer which is reserved for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR consistently in sendmsg code paths. Signed-off-by: Steffen Hurrle <steffen@hurrle.net> Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
This is a follow-up patch to f3d3342602f8bc ("net: rework recvmsg
handler msg_name and msg_namelen logic").

DECLARE_SOCKADDR validates that the structure we use for writing the
name information to is not larger than the buffer which is reserved
for msg->msg_name (which is 128 bytes). Also use DECLARE_SOCKADDR
consistently in sendmsg code paths.

Signed-off-by: Steffen Hurrle <steffen@hurrle.net>
Suggested-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>