linux-stable.git/net/mac802154, branch linux-4.9.y Linux kernel stable tree mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() 2022-12-14T10:24:34+00:00 Wei Yongjun weiyongjun1@huawei.com 2022-11-30T09:17:05+00:00 7410f4d1221bb182510b7778ab6eefa8b9b7102d [ Upstream commit b3d72d3135d2ef68296c1ee174436efd65386f04 ] Kernel fault injection test reports null-ptr-deref as follows: BUG: kernel NULL pointer dereference, address: 0000000000000008 RIP: 0010:cfg802154_netdev_notifier_call+0x120/0x310 include/linux/list.h:114 Call Trace: <TASK> raw_notifier_call_chain+0x6d/0xa0 kernel/notifier.c:87 call_netdevice_notifiers_info+0x6e/0xc0 net/core/dev.c:1944 unregister_netdevice_many_notify+0x60d/0xcb0 net/core/dev.c:1982 unregister_netdevice_queue+0x154/0x1a0 net/core/dev.c:10879 register_netdevice+0x9a8/0xb90 net/core/dev.c:10083 ieee802154_if_add+0x6ed/0x7e0 net/mac802154/iface.c:659 ieee802154_register_hw+0x29c/0x330 net/mac802154/main.c:229 mcr20a_probe+0xaaa/0xcb1 drivers/net/ieee802154/mcr20a.c:1316 ieee802154_if_add() allocates wpan_dev as netdev's private data, but not init the list in struct wpan_dev. cfg802154_netdev_notifier_call() manage the list when device register/unregister, and may lead to null-ptr-deref. Use INIT_LIST_HEAD() on it to initialize it correctly. Fixes: fcf39e6e88e9 ("ieee802154: add wpan_dev_list") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20221130091705.1831140-1-weiyongjun@huaweicloud.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit b3d72d3135d2ef68296c1ee174436efd65386f04 ]

Kernel fault injection test reports null-ptr-deref as follows:

BUG: kernel NULL pointer dereference, address: 0000000000000008
RIP: 0010:cfg802154_netdev_notifier_call+0x120/0x310 include/linux/list.h:114
Call Trace:
 <TASK>
 raw_notifier_call_chain+0x6d/0xa0 kernel/notifier.c:87
 call_netdevice_notifiers_info+0x6e/0xc0 net/core/dev.c:1944
 unregister_netdevice_many_notify+0x60d/0xcb0 net/core/dev.c:1982
 unregister_netdevice_queue+0x154/0x1a0 net/core/dev.c:10879
 register_netdevice+0x9a8/0xb90 net/core/dev.c:10083
 ieee802154_if_add+0x6ed/0x7e0 net/mac802154/iface.c:659
 ieee802154_register_hw+0x29c/0x330 net/mac802154/main.c:229
 mcr20a_probe+0xaaa/0xcb1 drivers/net/ieee802154/mcr20a.c:1316

ieee802154_if_add() allocates wpan_dev as netdev's private data, but not
init the list in struct wpan_dev. cfg802154_netdev_notifier_call() manage
the list when device register/unregister, and may lead to null-ptr-deref.

Use INIT_LIST_HEAD() on it to initialize it correctly.

Fixes: fcf39e6e88e9 ("ieee802154: add wpan_dev_list")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Alexander Aring <aahringo@redhat.com>

Link: https://lore.kernel.org/r/20221130091705.1831140-1-weiyongjun@huaweicloud.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
mac802154: Fix LQI recording 2022-11-03T14:49:16+00:00 Miquel Raynal miquel.raynal@bootlin.com 2022-10-20T14:25:35+00:00 ec4cb427fd02d51bde6b1ebb6aadf3418a50e3a4 commit 5a5c4e06fd03b595542d5590f2bc05a6b7fc5c2b upstream. Back in 2014, the LQI was saved in the skb control buffer (skb->cb, or mac_cb(skb)) without any actual reset of this area prior to its use. As part of a useful rework of the use of this region, 32edc40ae65c ("ieee802154: change _cb handling slightly") introduced mac_cb_init() to basically memset the cb field to 0. In particular, this new function got called at the beginning of mac802154_parse_frame_start(), right before the location where the buffer got actually filled. What went through unnoticed however, is the fact that the very first helper called by device drivers in the receive path already used this area to save the LQI value for later extraction. Resetting the cb field "so late" led to systematically zeroing the LQI. If we consider the reset of the cb field needed, we can make it as soon as we get an skb from a device driver, right before storing the LQI, as is the very first time we need to write something there. Cc: stable@vger.kernel.org Fixes: 32edc40ae65c ("ieee802154: change _cb handling slightly") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20221020142535.1038885-1-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 5a5c4e06fd03b595542d5590f2bc05a6b7fc5c2b upstream.

Back in 2014, the LQI was saved in the skb control buffer (skb->cb, or
mac_cb(skb)) without any actual reset of this area prior to its use.

As part of a useful rework of the use of this region, 32edc40ae65c
("ieee802154: change _cb handling slightly") introduced mac_cb_init() to
basically memset the cb field to 0. In particular, this new function got
called at the beginning of mac802154_parse_frame_start(), right before
the location where the buffer got actually filled.

What went through unnoticed however, is the fact that the very first
helper called by device drivers in the receive path already used this
area to save the LQI value for later extraction. Resetting the cb field
"so late" led to systematically zeroing the LQI.

If we consider the reset of the cb field needed, we can make it as soon
as we get an skb from a device driver, right before storing the LQI,
as is the very first time we need to write something there.

Cc: stable@vger.kernel.org
Fixes: 32edc40ae65c ("ieee802154: change _cb handling slightly")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20221020142535.1038885-1-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: mac802154: Fix a condition in the receive path 2022-09-15T10:39:45+00:00 Miquel Raynal miquel.raynal@bootlin.com 2022-08-26T14:29:54+00:00 a8758c8a56629e4487fb18ca42f838416a7a71b9 commit f0da47118c7e93cdbbc6fb403dd729a5f2c90ee3 upstream. Upon reception, a packet must be categorized, either it's destination is the host, or it is another host. A packet with no destination addressing fields may be valid in two situations: - the packet has no source field: only ACKs are built like that, we consider the host as the destination. - the packet has a valid source field: it is directed to the PAN coordinator, as for know we don't have this information we consider we are not the PAN coordinator. There was likely a copy/paste error made during a previous cleanup because the if clause is now containing exactly the same condition as in the switch case, which can never be true. In the past the destination address was used in the switch and the source address was used in the if, which matches what the spec says. Cc: stable@vger.kernel.org Fixes: ae531b9475f6 ("ieee802154: use ieee802154_addr instead of *_sa variants") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/r/20220826142954.254853-1-miquel.raynal@bootlin.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit f0da47118c7e93cdbbc6fb403dd729a5f2c90ee3 upstream.

Upon reception, a packet must be categorized, either it's destination is
the host, or it is another host. A packet with no destination addressing
fields may be valid in two situations:
- the packet has no source field: only ACKs are built like that, we
  consider the host as the destination.
- the packet has a valid source field: it is directed to the PAN
  coordinator, as for know we don't have this information we consider we
  are not the PAN coordinator.

There was likely a copy/paste error made during a previous cleanup
because the if clause is now containing exactly the same condition as in
the switch case, which can never be true. In the past the destination
address was used in the switch and the source address was used in the
if, which matches what the spec says.

Cc: stable@vger.kernel.org
Fixes: ae531b9475f6 ("ieee802154: use ieee802154_addr instead of *_sa variants")
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20220826142954.254853-1-miquel.raynal@bootlin.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net: mac802154: Fix general protection fault 2021-04-16T09:59:10+00:00 Pavel Skripkin paskripkin@gmail.com 2021-03-04T15:21:25+00:00 c3883480ce4ebe5b13dbfdc9f2c6503bc9e8ab69 commit 1165affd484889d4986cf3b724318935a0b120d8 upstream. syzbot found general protection fault in crypto_destroy_tfm()[1]. It was caused by wrong clean up loop in llsec_key_alloc(). If one of the tfm array members is in IS_ERR() range it will cause general protection fault in clean up function [1]. Call Trace: crypto_free_aead include/crypto/aead.h:191 [inline] [1] llsec_key_alloc net/mac802154/llsec.c:156 [inline] mac802154_llsec_key_add+0x9e0/0xcc0 net/mac802154/llsec.c:249 ieee802154_add_llsec_key+0x56/0x80 net/mac802154/cfg.c:338 rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline] nl802154_add_llsec_key+0x3d3/0x560 net/ieee802154/nl802154.c:1584 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:674 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xae Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Reported-by: syzbot+9ec037722d2603a9f52e@syzkaller.appspotmail.com Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20210304152125.1052825-1-paskripkin@gmail.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 1165affd484889d4986cf3b724318935a0b120d8 upstream.

syzbot found general protection fault in crypto_destroy_tfm()[1].
It was caused by wrong clean up loop in llsec_key_alloc().
If one of the tfm array members is in IS_ERR() range it will
cause general protection fault in clean up function [1].

Call Trace:
 crypto_free_aead include/crypto/aead.h:191 [inline] [1]
 llsec_key_alloc net/mac802154/llsec.c:156 [inline]
 mac802154_llsec_key_add+0x9e0/0xcc0 net/mac802154/llsec.c:249
 ieee802154_add_llsec_key+0x56/0x80 net/mac802154/cfg.c:338
 rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline]
 nl802154_add_llsec_key+0x3d3/0x560 net/ieee802154/nl802154.c:1584
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Reported-by: syzbot+9ec037722d2603a9f52e@syzkaller.appspotmail.com
Acked-by: Alexander Aring <aahringo@redhat.com>
Link: https://lore.kernel.org/r/20210304152125.1052825-1-paskripkin@gmail.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mac802154: tx: fix use-after-free 2020-10-01T18:40:18+00:00 Eric Dumazet edumazet@google.com 2020-09-08T10:40:25+00:00 20191c798611841f252facd81b702b640e94bd15 [ Upstream commit 0ff4628f4c6c1ab87eef9f16b25355cadc426d64 ] syzbot reported a bug in ieee802154_tx() [1] A similar issue in ieee802154_xmit_worker() is also fixed in this patch. [1] BUG: KASAN: use-after-free in ieee802154_tx+0x3d2/0x480 net/mac802154/tx.c:88 Read of size 4 at addr ffff8880251a8c70 by task syz-executor.3/928 CPU: 0 PID: 928 Comm: syz-executor.3 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530 ieee802154_tx+0x3d2/0x480 net/mac802154/tx.c:88 ieee802154_subif_start_xmit+0xbe/0xe4 net/mac802154/tx.c:130 __netdev_start_xmit include/linux/netdevice.h:4634 [inline] netdev_start_xmit include/linux/netdevice.h:4648 [inline] dev_direct_xmit+0x4e9/0x6e0 net/core/dev.c:4203 packet_snd net/packet/af_packet.c:2989 [inline] packet_sendmsg+0x2413/0x5290 net/packet/af_packet.c:3014 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fc98e749c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002ccc0 RCX: 000000000045d5b9 RDX: 0000000000000000 RSI: 0000000020007780 RDI: 000000000000000b RBP: 000000000118d020 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec R13: 00007fff690c720f R14: 00007fc98e74a9c0 R15: 000000000118cfec Allocated by task 928: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:518 [inline] slab_alloc_node mm/slab.c:3254 [inline] kmem_cache_alloc_node+0x136/0x3e0 mm/slab.c:3574 __alloc_skb+0x71/0x550 net/core/skbuff.c:198 alloc_skb include/linux/skbuff.h:1094 [inline] alloc_skb_with_frags+0x92/0x570 net/core/skbuff.c:5771 sock_alloc_send_pskb+0x72a/0x880 net/core/sock.c:2348 packet_alloc_skb net/packet/af_packet.c:2837 [inline] packet_snd net/packet/af_packet.c:2932 [inline] packet_sendmsg+0x19fb/0x5290 net/packet/af_packet.c:3014 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Freed by task 928: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355 __kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422 __cache_free mm/slab.c:3418 [inline] kmem_cache_free.part.0+0x74/0x1e0 mm/slab.c:3693 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:622 __kfree_skb net/core/skbuff.c:679 [inline] consume_skb net/core/skbuff.c:838 [inline] consume_skb+0xcf/0x160 net/core/skbuff.c:832 __dev_kfree_skb_any+0x9c/0xc0 net/core/dev.c:3107 fakelb_hw_xmit+0x20e/0x2a0 drivers/net/ieee802154/fakelb.c:81 drv_xmit_async net/mac802154/driver-ops.h:16 [inline] ieee802154_tx+0x282/0x480 net/mac802154/tx.c:81 ieee802154_subif_start_xmit+0xbe/0xe4 net/mac802154/tx.c:130 __netdev_start_xmit include/linux/netdevice.h:4634 [inline] netdev_start_xmit include/linux/netdevice.h:4648 [inline] dev_direct_xmit+0x4e9/0x6e0 net/core/dev.c:4203 packet_snd net/packet/af_packet.c:2989 [inline] packet_sendmsg+0x2413/0x5290 net/packet/af_packet.c:3014 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 The buggy address belongs to the object at ffff8880251a8c00 which belongs to the cache skbuff_head_cache of size 224 The buggy address is located 112 bytes inside of 224-byte region [ffff8880251a8c00, ffff8880251a8ce0) The buggy address belongs to the page: page:0000000062b6a4f1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x251a8 flags: 0xfffe0000000200(slab) raw: 00fffe0000000200 ffffea0000435c88 ffffea00028b6c08 ffff8880a9055d00 raw: 0000000000000000 ffff8880251a80c0 000000010000000c 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880251a8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880251a8b80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880251a8c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8880251a8c80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8880251a8d00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb Fixes: 409c3b0c5f03 ("mac802154: tx: move stats tx increment") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Cc: Alexander Aring <alex.aring@gmail.com> Cc: Stefan Schmidt <stefan@datenfreihafen.org> Cc: linux-wpan@vger.kernel.org Link: https://lore.kernel.org/r/20200908104025.4009085-1-edumazet@google.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 0ff4628f4c6c1ab87eef9f16b25355cadc426d64 ]

syzbot reported a bug in ieee802154_tx() [1]

A similar issue in ieee802154_xmit_worker() is also fixed in this patch.

[1]
BUG: KASAN: use-after-free in ieee802154_tx+0x3d2/0x480 net/mac802154/tx.c:88
Read of size 4 at addr ffff8880251a8c70 by task syz-executor.3/928

CPU: 0 PID: 928 Comm: syz-executor.3 Not tainted 5.9.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xae/0x497 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530
 ieee802154_tx+0x3d2/0x480 net/mac802154/tx.c:88
 ieee802154_subif_start_xmit+0xbe/0xe4 net/mac802154/tx.c:130
 __netdev_start_xmit include/linux/netdevice.h:4634 [inline]
 netdev_start_xmit include/linux/netdevice.h:4648 [inline]
 dev_direct_xmit+0x4e9/0x6e0 net/core/dev.c:4203
 packet_snd net/packet/af_packet.c:2989 [inline]
 packet_sendmsg+0x2413/0x5290 net/packet/af_packet.c:3014
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d5b9
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc98e749c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002ccc0 RCX: 000000000045d5b9
RDX: 0000000000000000 RSI: 0000000020007780 RDI: 000000000000000b
RBP: 000000000118d020 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec
R13: 00007fff690c720f R14: 00007fc98e74a9c0 R15: 000000000118cfec

Allocated by task 928:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:461
 slab_post_alloc_hook mm/slab.h:518 [inline]
 slab_alloc_node mm/slab.c:3254 [inline]
 kmem_cache_alloc_node+0x136/0x3e0 mm/slab.c:3574
 __alloc_skb+0x71/0x550 net/core/skbuff.c:198
 alloc_skb include/linux/skbuff.h:1094 [inline]
 alloc_skb_with_frags+0x92/0x570 net/core/skbuff.c:5771
 sock_alloc_send_pskb+0x72a/0x880 net/core/sock.c:2348
 packet_alloc_skb net/packet/af_packet.c:2837 [inline]
 packet_snd net/packet/af_packet.c:2932 [inline]
 packet_sendmsg+0x19fb/0x5290 net/packet/af_packet.c:3014
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 928:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
 __kasan_slab_free+0xd8/0x120 mm/kasan/common.c:422
 __cache_free mm/slab.c:3418 [inline]
 kmem_cache_free.part.0+0x74/0x1e0 mm/slab.c:3693
 kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:622
 __kfree_skb net/core/skbuff.c:679 [inline]
 consume_skb net/core/skbuff.c:838 [inline]
 consume_skb+0xcf/0x160 net/core/skbuff.c:832
 __dev_kfree_skb_any+0x9c/0xc0 net/core/dev.c:3107
 fakelb_hw_xmit+0x20e/0x2a0 drivers/net/ieee802154/fakelb.c:81
 drv_xmit_async net/mac802154/driver-ops.h:16 [inline]
 ieee802154_tx+0x282/0x480 net/mac802154/tx.c:81
 ieee802154_subif_start_xmit+0xbe/0xe4 net/mac802154/tx.c:130
 __netdev_start_xmit include/linux/netdevice.h:4634 [inline]
 netdev_start_xmit include/linux/netdevice.h:4648 [inline]
 dev_direct_xmit+0x4e9/0x6e0 net/core/dev.c:4203
 packet_snd net/packet/af_packet.c:2989 [inline]
 packet_sendmsg+0x2413/0x5290 net/packet/af_packet.c:3014
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

The buggy address belongs to the object at ffff8880251a8c00
 which belongs to the cache skbuff_head_cache of size 224
The buggy address is located 112 bytes inside of
 224-byte region [ffff8880251a8c00, ffff8880251a8ce0)
The buggy address belongs to the page:
page:0000000062b6a4f1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x251a8
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0000435c88 ffffea00028b6c08 ffff8880a9055d00
raw: 0000000000000000 ffff8880251a80c0 000000010000000c 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880251a8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880251a8b80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
>ffff8880251a8c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff8880251a8c80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
 ffff8880251a8d00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb

Fixes: 409c3b0c5f03 ("mac802154: tx: move stats tx increment")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@datenfreihafen.org>
Cc: linux-wpan@vger.kernel.org
Link: https://lore.kernel.org/r/20200908104025.4009085-1-edumazet@google.com
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
net: mac802154: tx: expand tailroom if necessary 2018-09-09T18:01:19+00:00 Alexander Aring aring@mojatatu.com 2018-07-02T20:32:03+00:00 41b2e6eff1da435174fe9c01b23b50f60b718ea1 commit f9c52831133050c6b82aa8b6831c92da2bbf2a0b upstream. This patch is necessary if case of AF_PACKET or other socket interface which I am aware of it and didn't allocated the necessary room. Reported-by: David Palma <david.palma@ntnu.no> Reported-by: Rabi Narayan Sahoo <rabinarayans0828@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Alexander Aring <aring@mojatatu.com> Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit f9c52831133050c6b82aa8b6831c92da2bbf2a0b upstream.

This patch is necessary if case of AF_PACKET or other socket interface
which I am aware of it and didn't allocated the necessary room.

Reported-by: David Palma <david.palma@ntnu.no>
Reported-by: Rabi Narayan Sahoo <rabinarayans0828@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alexander Aring <aring@mojatatu.com>
Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
mac802154: use rate limited warnings for malformed frames 2016-09-19T18:19:34+00:00 Aristeu Rozanski arozansk@redhat.com 2016-07-25T15:46:41+00:00 bd89bb6daaca3e4a7c509bdacb53a610f432fa2c Signed-off-by: Aristeu Rozanski <arozansk@redhat.com> Acked-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> 
Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
mac802154: don't warn on unsupported frames 2016-09-19T18:19:34+00:00 Aristeu Rozanski arozansk@redhat.com 2016-07-25T15:46:40+00:00 ca1de81aa262dcf48354a7c55f2558205517d06e Just because we don't support certain types of frames yet doesn't mean we have to flood the message log with warnings about "invalid" frames. Signed-off-by: Aristeu Rozanski <arozansk@redhat.com> Acked-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> 
Just because we don't support certain types of frames yet doesn't mean
we have to flood the message log with warnings about "invalid" frames.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
mac802154: set phy net namespace for new ifaces 2016-09-19T18:19:34+00:00 Alexander Aring aar@pengutronix.de 2016-07-24T14:12:24+00:00 abbcc341adb16f68915cae7ef9a10e0d7b57e3c0 This patch sets the net namespace when creating SoftMAC interfaces. This is important if the namespace at phy layer was switched before. Currently we losing interfaces in some namespace and it's not possible to recover that. Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> 
This patch sets the net namespace when creating SoftMAC interfaces. This
is important if the namespace at phy layer was switched before.
Currently we losing interfaces in some namespace and it's not possible
to recover that.

Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19T17:05:34+00:00 Linus Torvalds torvalds@linux-foundation.org 2016-03-19T17:05:34+00:00 1200b6809dfd9d73bc4c7db76d288c35fa4b2ebe Pull networking updates from David Miller: "Highlights: 1) Support more Realtek wireless chips, from Jes Sorenson. 2) New BPF types for per-cpu hash and arrap maps, from Alexei Starovoitov. 3) Make several TCP sysctls per-namespace, from Nikolay Borisov. 4) Allow the use of SO_REUSEPORT in order to do per-thread processing of incoming TCP/UDP connections. The muxing can be done using a BPF program which hashes the incoming packet. From Craig Gallek. 5) Add a multiplexer for TCP streams, to provide a messaged based interface. BPF programs can be used to determine the message boundaries. From Tom Herbert. 6) Add 802.1AE MACSEC support, from Sabrina Dubroca. 7) Avoid factorial complexity when taking down an inetdev interface with lots of configured addresses. We were doing things like traversing the entire address less for each address removed, and flushing the entire netfilter conntrack table for every address as well. 8) Add and use SKB bulk free infrastructure, from Jesper Brouer. 9) Allow offloading u32 classifiers to hardware, and implement for ixgbe, from John Fastabend. 10) Allow configuring IRQ coalescing parameters on a per-queue basis, from Kan Liang. 11) Extend ethtool so that larger link mode masks can be supported. From David Decotigny. 12) Introduce devlink, which can be used to configure port link types (ethernet vs Infiniband, etc.), port splitting, and switch device level attributes as a whole. From Jiri Pirko. 13) Hardware offload support for flower classifiers, from Amir Vadai. 14) Add "Local Checksum Offload". Basically, for a tunneled packet the checksum of the outer header is 'constant' (because with the checksum field filled into the inner protocol header, the payload of the outer frame checksums to 'zero'), and we can take advantage of that in various ways. From Edward Cree" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1548 commits) bonding: fix bond_get_stats() net: bcmgenet: fix dma api length mismatch net/mlx4_core: Fix backward compatibility on VFs phy: mdio-thunder: Fix some Kconfig typos lan78xx: add ndo_get_stats64 lan78xx: handle statistics counter rollover RDS: TCP: Remove unused constant RDS: TCP: Add sysctl tunables for sndbuf/rcvbuf on rds-tcp socket net: smc911x: convert pxa dma to dmaengine team: remove duplicate set of flag IFF_MULTICAST bonding: remove duplicate set of flag IFF_MULTICAST net: fix a comment typo ethernet: micrel: fix some error codes ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use it bpf, dst: add and use dst_tclassid helper bpf: make skb->tc_classid also readable net: mvneta: bm: clarify dependencies cls_bpf: reset class and reuse major in da ldmvsw: Checkpatch sunvnet.c and sunvnet_common.c ldmvsw: Add ldmvsw.c driver code ... 
Pull networking updates from David Miller:
 "Highlights:

   1) Support more Realtek wireless chips, from Jes Sorenson.

   2) New BPF types for per-cpu hash and arrap maps, from Alexei
      Starovoitov.

   3) Make several TCP sysctls per-namespace, from Nikolay Borisov.

   4) Allow the use of SO_REUSEPORT in order to do per-thread processing
   of incoming TCP/UDP connections.  The muxing can be done using a
   BPF program which hashes the incoming packet.  From Craig Gallek.

   5) Add a multiplexer for TCP streams, to provide a messaged based
      interface.  BPF programs can be used to determine the message
      boundaries.  From Tom Herbert.

   6) Add 802.1AE MACSEC support, from Sabrina Dubroca.

   7) Avoid factorial complexity when taking down an inetdev interface
      with lots of configured addresses.  We were doing things like
      traversing the entire address less for each address removed, and
      flushing the entire netfilter conntrack table for every address as
      well.

   8) Add and use SKB bulk free infrastructure, from Jesper Brouer.

   9) Allow offloading u32 classifiers to hardware, and implement for
      ixgbe, from John Fastabend.

  10) Allow configuring IRQ coalescing parameters on a per-queue basis,
      from Kan Liang.

  11) Extend ethtool so that larger link mode masks can be supported.
      From David Decotigny.

  12) Introduce devlink, which can be used to configure port link types
      (ethernet vs Infiniband, etc.), port splitting, and switch device
      level attributes as a whole.  From Jiri Pirko.

  13) Hardware offload support for flower classifiers, from Amir Vadai.

  14) Add "Local Checksum Offload".  Basically, for a tunneled packet
      the checksum of the outer header is 'constant' (because with the
      checksum field filled into the inner protocol header, the payload
      of the outer frame checksums to 'zero'), and we can take advantage
      of that in various ways.  From Edward Cree"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1548 commits)
  bonding: fix bond_get_stats()
  net: bcmgenet: fix dma api length mismatch
  net/mlx4_core: Fix backward compatibility on VFs
  phy: mdio-thunder: Fix some Kconfig typos
  lan78xx: add ndo_get_stats64
  lan78xx: handle statistics counter rollover
  RDS: TCP: Remove unused constant
  RDS: TCP: Add sysctl tunables for sndbuf/rcvbuf on rds-tcp socket
  net: smc911x: convert pxa dma to dmaengine
  team: remove duplicate set of flag IFF_MULTICAST
  bonding: remove duplicate set of flag IFF_MULTICAST
  net: fix a comment typo
  ethernet: micrel: fix some error codes
  ip_tunnels, bpf: define IP_TUNNEL_OPTS_MAX and use it
  bpf, dst: add and use dst_tclassid helper
  bpf: make skb->tc_classid also readable
  net: mvneta: bm: clarify dependencies
  cls_bpf: reset class and reuse major in da
  ldmvsw: Checkpatch sunvnet.c and sunvnet_common.c
  ldmvsw: Add ldmvsw.c driver code
  ...