forked from Minki/linux
e9a135a969
1316 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Eric Dumazet
|
b7469e83d2 |
bonding/alb: make sure arp header is pulled before accessing it
Similar to commit |
||
Taehee Yoo
|
b3e80d44f5 |
bonding: fix lockdep warning in bond_get_stats()
In the "struct bonding", there is stats_lock.
This lock protects "bond_stats" in the "struct bonding".
bond_stats is updated in the bond_get_stats() and this function would be
executed concurrently. So, the lock is needed.
Bonding interfaces would be nested.
So, either stats_lock should use dynamic lockdep class key or stats_lock
should be used by spin_lock_nested(). In the current code, stats_lock is
using a dynamic lockdep class key.
But there is no updating stats_lock_key routine So, lockdep warning
will occur.
Test commands:
ip link add bond0 type bond
ip link add bond1 type bond
ip link set bond0 master bond1
ip link set bond0 nomaster
ip link set bond1 master bond0
Splat looks like:
[ 38.420603][ T957] 5.5.0+ #394 Not tainted
[ 38.421074][ T957] ------------------------------------------------------
[ 38.421837][ T957] ip/957 is trying to acquire lock:
[ 38.422399][ T957] ffff888063262cd8 (&bond->stats_lock_key#2){+.+.}, at: bond_get_stats+0x90/0x4d0 [bonding]
[ 38.423528][ T957]
[ 38.423528][ T957] but task is already holding lock:
[ 38.424526][ T957] ffff888065fd2cd8 (&bond->stats_lock_key){+.+.}, at: bond_get_stats+0x90/0x4d0 [bonding]
[ 38.426075][ T957]
[ 38.426075][ T957] which lock already depends on the new lock.
[ 38.426075][ T957]
[ 38.428536][ T957]
[ 38.428536][ T957] the existing dependency chain (in reverse order) is:
[ 38.429475][ T957]
[ 38.429475][ T957] -> #1 (&bond->stats_lock_key){+.+.}:
[ 38.430273][ T957] _raw_spin_lock+0x30/0x70
[ 38.430812][ T957] bond_get_stats+0x90/0x4d0 [bonding]
[ 38.431451][ T957] dev_get_stats+0x1ec/0x270
[ 38.432088][ T957] bond_get_stats+0x1a5/0x4d0 [bonding]
[ 38.432767][ T957] dev_get_stats+0x1ec/0x270
[ 38.433322][ T957] rtnl_fill_stats+0x44/0xbe0
[ 38.433866][ T957] rtnl_fill_ifinfo+0xeb2/0x3720
[ 38.434474][ T957] rtmsg_ifinfo_build_skb+0xca/0x170
[ 38.435081][ T957] rtmsg_ifinfo_event.part.33+0x1b/0xb0
[ 38.436848][ T957] rtnetlink_event+0xcd/0x120
[ 38.437455][ T957] notifier_call_chain+0x90/0x160
[ 38.438067][ T957] netdev_change_features+0x74/0xa0
[ 38.438708][ T957] bond_compute_features.isra.45+0x4e6/0x6f0 [bonding]
[ 38.439522][ T957] bond_enslave+0x3639/0x47b0 [bonding]
[ 38.440225][ T957] do_setlink+0xaab/0x2ef0
[ 38.440786][ T957] __rtnl_newlink+0x9c5/0x1270
[ 38.441463][ T957] rtnl_newlink+0x65/0x90
[ 38.442075][ T957] rtnetlink_rcv_msg+0x4a8/0x890
[ 38.442774][ T957] netlink_rcv_skb+0x121/0x350
[ 38.443451][ T957] netlink_unicast+0x42e/0x610
[ 38.444282][ T957] netlink_sendmsg+0x65a/0xb90
[ 38.444992][ T957] ____sys_sendmsg+0x5ce/0x7a0
[ 38.445679][ T957] ___sys_sendmsg+0x10f/0x1b0
[ 38.446365][ T957] __sys_sendmsg+0xc6/0x150
[ 38.447007][ T957] do_syscall_64+0x99/0x4f0
[ 38.447668][ T957] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 38.448538][ T957]
[ 38.448538][ T957] -> #0 (&bond->stats_lock_key#2){+.+.}:
[ 38.449554][ T957] __lock_acquire+0x2d8d/0x3de0
[ 38.450148][ T957] lock_acquire+0x164/0x3b0
[ 38.450711][ T957] _raw_spin_lock+0x30/0x70
[ 38.451292][ T957] bond_get_stats+0x90/0x4d0 [bonding]
[ 38.451950][ T957] dev_get_stats+0x1ec/0x270
[ 38.452425][ T957] bond_get_stats+0x1a5/0x4d0 [bonding]
[ 38.453362][ T957] dev_get_stats+0x1ec/0x270
[ 38.453825][ T957] rtnl_fill_stats+0x44/0xbe0
[ 38.454390][ T957] rtnl_fill_ifinfo+0xeb2/0x3720
[ 38.456257][ T957] rtmsg_ifinfo_build_skb+0xca/0x170
[ 38.456998][ T957] rtmsg_ifinfo_event.part.33+0x1b/0xb0
[ 38.459351][ T957] rtnetlink_event+0xcd/0x120
[ 38.460086][ T957] notifier_call_chain+0x90/0x160
[ 38.460829][ T957] netdev_change_features+0x74/0xa0
[ 38.461752][ T957] bond_compute_features.isra.45+0x4e6/0x6f0 [bonding]
[ 38.462705][ T957] bond_enslave+0x3639/0x47b0 [bonding]
[ 38.463476][ T957] do_setlink+0xaab/0x2ef0
[ 38.464141][ T957] __rtnl_newlink+0x9c5/0x1270
[ 38.464897][ T957] rtnl_newlink+0x65/0x90
[ 38.465522][ T957] rtnetlink_rcv_msg+0x4a8/0x890
[ 38.466215][ T957] netlink_rcv_skb+0x121/0x350
[ 38.466895][ T957] netlink_unicast+0x42e/0x610
[ 38.467583][ T957] netlink_sendmsg+0x65a/0xb90
[ 38.468285][ T957] ____sys_sendmsg+0x5ce/0x7a0
[ 38.469202][ T957] ___sys_sendmsg+0x10f/0x1b0
[ 38.469884][ T957] __sys_sendmsg+0xc6/0x150
[ 38.470587][ T957] do_syscall_64+0x99/0x4f0
[ 38.471245][ T957] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 38.472093][ T957]
[ 38.472093][ T957] other info that might help us debug this:
[ 38.472093][ T957]
[ 38.473438][ T957] Possible unsafe locking scenario:
[ 38.473438][ T957]
[ 38.474898][ T957] CPU0 CPU1
[ 38.476234][ T957] ---- ----
[ 38.480171][ T957] lock(&bond->stats_lock_key);
[ 38.480808][ T957] lock(&bond->stats_lock_key#2);
[ 38.481791][ T957] lock(&bond->stats_lock_key);
[ 38.482754][ T957] lock(&bond->stats_lock_key#2);
[ 38.483416][ T957]
[ 38.483416][ T957] *** DEADLOCK ***
[ 38.483416][ T957]
[ 38.484505][ T957] 3 locks held by ip/957:
[ 38.485048][ T957] #0: ffffffffbccf6230 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x457/0x890
[ 38.486198][ T957] #1: ffff888065fd2cd8 (&bond->stats_lock_key){+.+.}, at: bond_get_stats+0x90/0x4d0 [bonding]
[ 38.487625][ T957] #2: ffffffffbc9254c0 (rcu_read_lock){....}, at: bond_get_stats+0x5/0x4d0 [bonding]
[ 38.488897][ T957]
[ 38.488897][ T957] stack backtrace:
[ 38.489646][ T957] CPU: 1 PID: 957 Comm: ip Not tainted 5.5.0+ #394
[ 38.490497][ T957] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 38.492810][ T957] Call Trace:
[ 38.493219][ T957] dump_stack+0x96/0xdb
[ 38.493709][ T957] check_noncircular+0x371/0x450
[ 38.494344][ T957] ? lookup_address+0x60/0x60
[ 38.494923][ T957] ? print_circular_bug.isra.35+0x310/0x310
[ 38.495699][ T957] ? hlock_class+0x130/0x130
[ 38.496334][ T957] ? __lock_acquire+0x2d8d/0x3de0
[ 38.496979][ T957] __lock_acquire+0x2d8d/0x3de0
[ 38.497607][ T957] ? register_lock_class+0x14d0/0x14d0
[ 38.498333][ T957] ? check_chain_key+0x236/0x5d0
[ 38.499003][ T957] lock_acquire+0x164/0x3b0
[ 38.499800][ T957] ? bond_get_stats+0x90/0x4d0 [bonding]
[ 38.500706][ T957] _raw_spin_lock+0x30/0x70
[ 38.501435][ T957] ? bond_get_stats+0x90/0x4d0 [bonding]
[ 38.502311][ T957] bond_get_stats+0x90/0x4d0 [bonding]
[ ... ]
But, there is another problem.
The dynamic lockdep class key is protected by RTNL, but bond_get_stats()
would be called outside of RTNL.
So, it would use an invalid dynamic lockdep class key.
In order to fix this issue, stats_lock uses spin_lock_nested() instead of
a dynamic lockdep key.
The bond_get_stats() calls bond_get_lowest_level_rcu() to get the correct
nest level value, which will be used by spin_lock_nested().
The "dev->lower_level" indicates lower nest level value, but this value
is invalid outside of RTNL.
So, bond_get_lowest_level_rcu() returns valid lower nest level value in
the RCU critical section.
bond_get_lowest_level_rcu() will be work only when LOCKDEP is enabled.
Fixes:
|
||
|
Taehee Yoo
|
064ff66e2b |
bonding: add missing netdev_update_lockdep_key()
After bond_release(), netdev_update_lockdep_key() should be called.
But both ioctl path and attribute path don't call
netdev_update_lockdep_key().
This patch adds missing netdev_update_lockdep_key().
Test commands:
ip link add bond0 type bond
ip link add bond1 type bond
ifenslave bond0 bond1
ifenslave -d bond0 bond1
ifenslave bond1 bond0
Splat looks like:
[ 29.501182][ T1046] WARNING: possible circular locking dependency detected
[ 29.501945][ T1039] hardirqs last disabled at (1962): [<ffffffffac6c807f>] handle_mm_fault+0x13f/0x700
[ 29.503442][ T1046] 5.5.0+ #322 Not tainted
[ 29.503447][ T1046] ------------------------------------------------------
[ 29.504277][ T1039] softirqs last enabled at (1180): [<ffffffffade00678>] __do_softirq+0x678/0x981
[ 29.505443][ T1046] ifenslave/1046 is trying to acquire lock:
[ 29.505886][ T1039] softirqs last disabled at (1169): [<ffffffffac19c18a>] irq_exit+0x17a/0x1a0
[ 29.509997][ T1046] ffff88805d5da280 (&dev->addr_list_lock_key#3){+...}, at: dev_mc_sync_multiple+0x95/0x120
[ 29.511243][ T1046]
[ 29.511243][ T1046] but task is already holding lock:
[ 29.512192][ T1046] ffff8880460f2280 (&dev->addr_list_lock_key#4){+...}, at: bond_enslave+0x4482/0x47b0 [bonding]
[ 29.514124][ T1046]
[ 29.514124][ T1046] which lock already depends on the new lock.
[ 29.514124][ T1046]
[ 29.517297][ T1046]
[ 29.517297][ T1046] the existing dependency chain (in reverse order) is:
[ 29.518231][ T1046]
[ 29.518231][ T1046] -> #1 (&dev->addr_list_lock_key#4){+...}:
[ 29.519076][ T1046] _raw_spin_lock+0x30/0x70
[ 29.519588][ T1046] dev_mc_sync_multiple+0x95/0x120
[ 29.520208][ T1046] bond_enslave+0x448d/0x47b0 [bonding]
[ 29.520862][ T1046] bond_option_slaves_set+0x1a3/0x370 [bonding]
[ 29.521640][ T1046] __bond_opt_set+0x1ff/0xbb0 [bonding]
[ 29.522438][ T1046] __bond_opt_set_notify+0x2b/0xf0 [bonding]
[ 29.523251][ T1046] bond_opt_tryset_rtnl+0x92/0xf0 [bonding]
[ 29.524082][ T1046] bonding_sysfs_store_option+0x8a/0xf0 [bonding]
[ 29.524959][ T1046] kernfs_fop_write+0x276/0x410
[ 29.525620][ T1046] vfs_write+0x197/0x4a0
[ 29.526218][ T1046] ksys_write+0x141/0x1d0
[ 29.526818][ T1046] do_syscall_64+0x99/0x4f0
[ 29.527430][ T1046] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 29.528265][ T1046]
[ 29.528265][ T1046] -> #0 (&dev->addr_list_lock_key#3){+...}:
[ 29.529272][ T1046] __lock_acquire+0x2d8d/0x3de0
[ 29.529935][ T1046] lock_acquire+0x164/0x3b0
[ 29.530638][ T1046] _raw_spin_lock+0x30/0x70
[ 29.531187][ T1046] dev_mc_sync_multiple+0x95/0x120
[ 29.531790][ T1046] bond_enslave+0x448d/0x47b0 [bonding]
[ 29.532451][ T1046] bond_option_slaves_set+0x1a3/0x370 [bonding]
[ 29.533163][ T1046] __bond_opt_set+0x1ff/0xbb0 [bonding]
[ 29.533789][ T1046] __bond_opt_set_notify+0x2b/0xf0 [bonding]
[ 29.534595][ T1046] bond_opt_tryset_rtnl+0x92/0xf0 [bonding]
[ 29.535500][ T1046] bonding_sysfs_store_option+0x8a/0xf0 [bonding]
[ 29.536379][ T1046] kernfs_fop_write+0x276/0x410
[ 29.537057][ T1046] vfs_write+0x197/0x4a0
[ 29.537640][ T1046] ksys_write+0x141/0x1d0
[ 29.538251][ T1046] do_syscall_64+0x99/0x4f0
[ 29.538870][ T1046] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 29.539659][ T1046]
[ 29.539659][ T1046] other info that might help us debug this:
[ 29.539659][ T1046]
[ 29.540953][ T1046] Possible unsafe locking scenario:
[ 29.540953][ T1046]
[ 29.541883][ T1046] CPU0 CPU1
[ 29.542540][ T1046] ---- ----
[ 29.543209][ T1046] lock(&dev->addr_list_lock_key#4);
[ 29.543880][ T1046] lock(&dev->addr_list_lock_key#3);
[ 29.544873][ T1046] lock(&dev->addr_list_lock_key#4);
[ 29.545863][ T1046] lock(&dev->addr_list_lock_key#3);
[ 29.546525][ T1046]
[ 29.546525][ T1046] *** DEADLOCK ***
[ 29.546525][ T1046]
[ 29.547542][ T1046] 5 locks held by ifenslave/1046:
[ 29.548196][ T1046] #0: ffff88806044c478 (sb_writers#5){.+.+}, at: vfs_write+0x3bb/0x4a0
[ 29.549248][ T1046] #1: ffff88805af00890 (&of->mutex){+.+.}, at: kernfs_fop_write+0x1cf/0x410
[ 29.550343][ T1046] #2: ffff88805b8b54b0 (kn->count#157){.+.+}, at: kernfs_fop_write+0x1f2/0x410
[ 29.551575][ T1046] #3: ffffffffaecf4cf0 (rtnl_mutex){+.+.}, at: bond_opt_tryset_rtnl+0x5f/0xf0 [bonding]
[ 29.552819][ T1046] #4: ffff8880460f2280 (&dev->addr_list_lock_key#4){+...}, at: bond_enslave+0x4482/0x47b0 [bonding]
[ 29.554175][ T1046]
[ 29.554175][ T1046] stack backtrace:
[ 29.554907][ T1046] CPU: 0 PID: 1046 Comm: ifenslave Not tainted 5.5.0+ #322
[ 29.555854][ T1046] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 29.557064][ T1046] Call Trace:
[ 29.557504][ T1046] dump_stack+0x96/0xdb
[ 29.558054][ T1046] check_noncircular+0x371/0x450
[ 29.558723][ T1046] ? print_circular_bug.isra.35+0x310/0x310
[ 29.559486][ T1046] ? hlock_class+0x130/0x130
[ 29.560100][ T1046] ? __lock_acquire+0x2d8d/0x3de0
[ 29.560761][ T1046] __lock_acquire+0x2d8d/0x3de0
[ 29.561366][ T1046] ? register_lock_class+0x14d0/0x14d0
[ 29.562045][ T1046] ? find_held_lock+0x39/0x1d0
[ 29.562641][ T1046] lock_acquire+0x164/0x3b0
[ 29.563199][ T1046] ? dev_mc_sync_multiple+0x95/0x120
[ 29.563872][ T1046] _raw_spin_lock+0x30/0x70
[ 29.564464][ T1046] ? dev_mc_sync_multiple+0x95/0x120
[ 29.565146][ T1046] dev_mc_sync_multiple+0x95/0x120
[ 29.565793][ T1046] bond_enslave+0x448d/0x47b0 [bonding]
[ 29.566487][ T1046] ? bond_update_slave_arr+0x940/0x940 [bonding]
[ 29.567279][ T1046] ? bstr_printf+0xc20/0xc20
[ 29.567857][ T1046] ? stack_trace_consume_entry+0x160/0x160
[ 29.568614][ T1046] ? deactivate_slab.isra.77+0x2c5/0x800
[ 29.569320][ T1046] ? check_chain_key+0x236/0x5d0
[ 29.569939][ T1046] ? sscanf+0x93/0xc0
[ 29.570442][ T1046] ? vsscanf+0x1e20/0x1e20
[ 29.571003][ T1046] bond_option_slaves_set+0x1a3/0x370 [bonding]
[ ... ]
Fixes:
|
||
|
Eric Dumazet
|
38f88c4540 |
bonding/alb: properly access headers in bond_alb_xmit()
syzbot managed to send an IPX packet through bond_alb_xmit()
and af_packet and triggered a use-after-free.
First, bond_alb_xmit() was using ipx_hdr() helper to reach
the IPX header, but ipx_hdr() was using the transport offset
instead of the network offset. In the particular syzbot
report transport offset was 0xFFFF
This patch removes ipx_hdr() since it was only (mis)used from bonding.
Then we need to make sure IPv4/IPv6/IPX headers are pulled
in skb->head before dereferencing anything.
BUG: KASAN: use-after-free in bond_alb_xmit+0x153a/0x1590 drivers/net/bonding/bond_alb.c:1452
Read of size 2 at addr ffff8801ce56dfff by task syz-executor.2/18108
(if (ipx_hdr(skb)->ipx_checksum != IPX_NO_CHECKSUM) ...)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
[<ffffffff8441fc42>] __dump_stack lib/dump_stack.c:17 [inline]
[<ffffffff8441fc42>] dump_stack+0x14d/0x20b lib/dump_stack.c:53
[<ffffffff81a7dec4>] print_address_description+0x6f/0x20b mm/kasan/report.c:282
[<ffffffff81a7e0ec>] kasan_report_error mm/kasan/report.c:380 [inline]
[<ffffffff81a7e0ec>] kasan_report mm/kasan/report.c:438 [inline]
[<ffffffff81a7e0ec>] kasan_report.cold+0x8c/0x2a0 mm/kasan/report.c:422
[<ffffffff81a7dc4f>] __asan_report_load_n_noabort+0xf/0x20 mm/kasan/report.c:469
[<ffffffff82c8c00a>] bond_alb_xmit+0x153a/0x1590 drivers/net/bonding/bond_alb.c:1452
[<ffffffff82c60c74>] __bond_start_xmit drivers/net/bonding/bond_main.c:4199 [inline]
[<ffffffff82c60c74>] bond_start_xmit+0x4f4/0x1570 drivers/net/bonding/bond_main.c:4224
[<ffffffff83baa558>] __netdev_start_xmit include/linux/netdevice.h:4525 [inline]
[<ffffffff83baa558>] netdev_start_xmit include/linux/netdevice.h:4539 [inline]
[<ffffffff83baa558>] xmit_one net/core/dev.c:3611 [inline]
[<ffffffff83baa558>] dev_hard_start_xmit+0x168/0x910 net/core/dev.c:3627
[<ffffffff83bacf35>] __dev_queue_xmit+0x1f55/0x33b0 net/core/dev.c:4238
[<ffffffff83bae3a8>] dev_queue_xmit+0x18/0x20 net/core/dev.c:4278
[<ffffffff84339189>] packet_snd net/packet/af_packet.c:3226 [inline]
[<ffffffff84339189>] packet_sendmsg+0x4919/0x70b0 net/packet/af_packet.c:3252
[<ffffffff83b1ac0c>] sock_sendmsg_nosec net/socket.c:673 [inline]
[<ffffffff83b1ac0c>] sock_sendmsg+0x12c/0x160 net/socket.c:684
[<ffffffff83b1f5a2>] __sys_sendto+0x262/0x380 net/socket.c:1996
[<ffffffff83b1f700>] SYSC_sendto net/socket.c:2008 [inline]
[<ffffffff83b1f700>] SyS_sendto+0x40/0x60 net/socket.c:2004
Fixes:
|
||
Andy Roulin
|
c1e4699026 |
bonding: rename AD_STATE_* to LACP_STATE_*
As the LACP actor/partner state is now part of the uapi, rename the
3ad state defines with LACP prefix. The LACP prefix is preferred over
BOND_3AD as the LACP standard moved to 802.1AX.
Fixes:
|
||
David S. Miller
|
ac80010fc9 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Mere overlapping changes in the conflicts here. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Mahesh Bandewar
|
5d485ed88d |
bonding: fix active-backup transition after link failure
After the recent fix in commit |
||
|
Andy Roulin
|
826f66b30c |
bonding: move 802.3ad port state flags to uapi
The bond slave actor/partner operating state is exported as bitfield to userspace, which lacks a way to interpret it, e.g., iproute2 only prints the state as a number: ad_actor_oper_port_state 15 For userspace to interpret the bitfield, the bitfield definitions should be part of the uapi. The bitfield itself is defined in the 802.3ad standard. This commit moves the 802.3ad bitfield definitions to uapi. Related iproute2 patches, soon to be posted upstream, use the new uapi headers to pretty-print bond slave state, e.g., with ip -d link show ad_actor_oper_port_state_str <active,short_timeout,aggregating,in_sync> Signed-off-by: Andy Roulin <aroulin@cumulusnetworks.com> Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by: Jay Vosburgh <jay.vosburgh@canonical.com> Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> |
||
|
Eric Dumazet
|
9e99bfefdb |
bonding: fix bond_neigh_init()
1) syzbot reported an uninit-value in bond_neigh_setup() [1]
bond_neigh_setup() uses a temporary on-stack 'struct neigh_parms parms',
but only clears parms.neigh_setup field.
A stacked bonding device would then enter bond_neigh_setup()
and read garbage from parms->dev.
If we get really unlucky and garbage is matching @dev, then we
could recurse and eventually crash.
Let's make sure the whole structure is cleared to avoid surprises.
2) bond_neigh_setup() can be called while another cpu manipulates
the master device, removing or adding a slave.
We need at least rcu protection to prevent use-after-free.
Note: Prior code does not support a stack of bonding devices,
this patch does not attempt to fix this, and leave a comment instead.
[1]
BUG: KMSAN: uninit-value in bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3655
CPU: 0 PID: 11256 Comm: syz-executor.0 Not tainted 5.4.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1c9/0x220 lib/dump_stack.c:118
kmsan_report+0x128/0x220 mm/kmsan/kmsan_report.c:108
__msan_warning+0x57/0xa0 mm/kmsan/kmsan_instr.c:245
bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3655
bond_neigh_init+0x216/0x4b0 drivers/net/bonding/bond_main.c:3626
___neigh_create+0x169e/0x2c40 net/core/neighbour.c:613
__neigh_create+0xbd/0xd0 net/core/neighbour.c:674
ip6_finish_output2+0x149a/0x2670 net/ipv6/ip6_output.c:113
__ip6_finish_output+0x83d/0x8f0 net/ipv6/ip6_output.c:142
ip6_finish_output+0x2db/0x420 net/ipv6/ip6_output.c:152
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0x5d3/0x720 net/ipv6/ip6_output.c:175
dst_output include/net/dst.h:436 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
mld_sendpack+0xebd/0x13d0 net/ipv6/mcast.c:1682
mld_send_cr net/ipv6/mcast.c:1978 [inline]
mld_ifc_timer_expire+0x116b/0x1680 net/ipv6/mcast.c:2477
call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers+0xd60/0x1270 kernel/time/timer.c:1773
run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
__do_softirq+0x4a1/0x83a kernel/softirq.c:293
invoke_softirq kernel/softirq.c:375 [inline]
irq_exit+0x230/0x280 kernel/softirq.c:416
exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1138
apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:835
</IRQ>
RIP: 0010:kmsan_free_page+0x18d/0x1c0 mm/kmsan/kmsan_shadow.c:439
Code: 4c 89 ff 44 89 f6 e8 82 0d ee ff 65 ff 0d 9f 26 3b 60 65 8b 05 98 26 3b 60 85 c0 75 24 e8 5b f6 35 ff 4c 89 6d d0 ff 75 d0 9d <48> 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 0f 0b 0f 0b 0f
RSP: 0018:ffffb328034af818 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffffe2d7471f8360 RCX: 0000000000000000
RDX: ffffffffadea7000 RSI: 0000000000000004 RDI: ffff93496fcda104
RBP: ffffb328034af850 R08: ffff934a47e86d00 R09: ffff93496fc41900
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000246 R14: 0000000000000000 R15: ffffe2d7472225c0
free_pages_prepare mm/page_alloc.c:1138 [inline]
free_pcp_prepare mm/page_alloc.c:1230 [inline]
free_unref_page_prepare+0x1d9/0x770 mm/page_alloc.c:3025
free_unref_page mm/page_alloc.c:3074 [inline]
free_the_page mm/page_alloc.c:4832 [inline]
__free_pages+0x154/0x230 mm/page_alloc.c:4840
__vunmap+0xdac/0xf20 mm/vmalloc.c:2277
__vfree mm/vmalloc.c:2325 [inline]
vfree+0x7c/0x170 mm/vmalloc.c:2355
copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:883 [inline]
get_entries net/ipv6/netfilter/ip6_tables.c:1041 [inline]
do_ip6t_get_ctl+0xfa4/0x1030 net/ipv6/netfilter/ip6_tables.c:1709
nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122
ipv6_getsockopt+0x264/0x510 net/ipv6/ipv6_sockglue.c:1400
tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3688
sock_common_getsockopt+0x13f/0x180 net/core/sock.c:3110
__sys_getsockopt+0x533/0x7b0 net/socket.c:2129
__do_sys_getsockopt net/socket.c:2144 [inline]
__se_sys_getsockopt+0xe1/0x100 net/socket.c:2141
__x64_sys_getsockopt+0x62/0x80 net/socket.c:2141
do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d20a
Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 8d 8b fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 6a 8b fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:0000000000a6f618 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000a6f640 RCX: 000000000045d20a
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000003
RBP: 0000000000717cc0 R08: 0000000000a6f63c R09: 0000000000004000
R10: 0000000000a6f740 R11: 0000000000000212 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000000029 R15: 0000000000715b00
Local variable description: ----parms@bond_neigh_init
Variable was created at:
bond_neigh_init+0x8c/0x4b0 drivers/net/bonding/bond_main.c:3617
bond_neigh_init+0x8c/0x4b0 drivers/net/bonding/bond_main.c:3617
Fixes:
|
||
|
Eric Dumazet
|
f394722fb0 |
neighbour: remove neigh_cleanup() method
neigh_cleanup() has not been used for seven years, and was a wrong design.
Messing with shared pointer in bond_neigh_init() without proper
memory barriers would at least trigger syzbot complains eventually.
It is time to remove this stuff.
Fixes:
|
||
Matteo Croce
|
df98be06c9 |
bonding: symmetric ICMP transmit
A bonding with layer2+3 or layer3+4 hashing uses the IP addresses and the ports
to balance packets between slaves. With some network errors, we receive an ICMP
error packet by the remote host or a router. If sent by a router, the source IP
can differ from the remote host one. Additionally the ICMP protocol has no port
numbers, so a layer3+4 bonding will get a different hash than the previous one.
These two conditions could let the packet go through a different interface than
the other packets of the same flow:
# tcpdump -qltnni veth0 |sed 's/^/0: /' &
# tcpdump -qltnni veth1 |sed 's/^/1: /' &
# hping3 -2 192.168.0.2 -p 9
0: IP 192.168.0.1.2251 > 192.168.0.2.9: UDP, length 0
1: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
1: IP 192.168.0.1.2252 > 192.168.0.2.9: UDP, length 0
1: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
1: IP 192.168.0.1.2253 > 192.168.0.2.9: UDP, length 0
1: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
0: IP 192.168.0.1.2254 > 192.168.0.2.9: UDP, length 0
1: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
An ICMP error packet contains the header of the packet which caused the network
error, so inspect it and match the flow against it, so we can send the ICMP via
the same interface of the previous packet in the flow.
Move the IP and port dissect code into a generic function bond_flow_ip() and if
we are dissecting an ICMP error packet, call it again with the adjusted offset.
# hping3 -2 192.168.0.2 -p 9
1: IP 192.168.0.1.1224 > 192.168.0.2.9: UDP, length 0
1: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
1: IP 192.168.0.1.1225 > 192.168.0.2.9: UDP, length 0
1: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
0: IP 192.168.0.1.1226 > 192.168.0.2.9: UDP, length 0
0: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
0: IP 192.168.0.1.1227 > 192.168.0.2.9: UDP, length 0
0: IP 192.168.0.2 > 192.168.0.1: ICMP 192.168.0.2 udp port 9 unreachable, length 36
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
David S. Miller
|
14684b9301 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
One conflict in the BPF samples Makefile, some fixes in 'net' whilst we were converting over to Makefile.target rules in 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Jay Vosburgh
|
1899bb3251 |
bonding: fix state transition issue in link monitoring
Since |
||
|
David S. Miller
|
d31e95585c |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
The only slightly tricky merge conflict was the netdevsim because the mutex locking fix overlapped a lot of driver reload reorganization. The rest were (relatively) trivial in nature. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Matteo Croce
|
58deb77cc5 |
bonding: balance ICMP echoes in layer3+4 mode
The bonding uses the L4 ports to balance flows between slaves. As the ICMP
protocol has no ports, those packets are sent all to the same device:
# tcpdump -qltnni veth0 ip |sed 's/^/0: /' &
# tcpdump -qltnni veth1 ip |sed 's/^/1: /' &
# ping -qc1 192.168.0.2
1: IP 192.168.0.1 > 192.168.0.2: ICMP echo request, id 315, seq 1, length 64
1: IP 192.168.0.2 > 192.168.0.1: ICMP echo reply, id 315, seq 1, length 64
# ping -qc1 192.168.0.2
1: IP 192.168.0.1 > 192.168.0.2: ICMP echo request, id 316, seq 1, length 64
1: IP 192.168.0.2 > 192.168.0.1: ICMP echo reply, id 316, seq 1, length 64
# ping -qc1 192.168.0.2
1: IP 192.168.0.1 > 192.168.0.2: ICMP echo request, id 317, seq 1, length 64
1: IP 192.168.0.2 > 192.168.0.1: ICMP echo reply, id 317, seq 1, length 64
But some ICMP packets have an Identifier field which is
used to match packets within sessions, let's use this value in the hash
function to balance these packets between bond slaves:
# ping -qc1 192.168.0.2
0: IP 192.168.0.1 > 192.168.0.2: ICMP echo request, id 303, seq 1, length 64
0: IP 192.168.0.2 > 192.168.0.1: ICMP echo reply, id 303, seq 1, length 64
# ping -qc1 192.168.0.2
1: IP 192.168.0.1 > 192.168.0.2: ICMP echo request, id 304, seq 1, length 64
1: IP 192.168.0.2 > 192.168.0.1: ICMP echo reply, id 304, seq 1, length 64
Aso, let's use a flow_dissector_key which defines FLOW_DISSECTOR_KEY_ICMP,
so we can balance pings encapsulated in a tunnel when using mode encap3+4:
# ping -q 192.168.1.2 -c1
0: IP 192.168.0.1 > 192.168.0.2: GREv0, length 102: IP 192.168.1.1 > 192.168.1.2: ICMP echo request, id 585, seq 1, length 64
0: IP 192.168.0.2 > 192.168.0.1: GREv0, length 102: IP 192.168.1.2 > 192.168.1.1: ICMP echo reply, id 585, seq 1, length 64
# ping -q 192.168.1.2 -c1
1: IP 192.168.0.1 > 192.168.0.2: GREv0, length 102: IP 192.168.1.1 > 192.168.1.2: ICMP echo request, id 586, seq 1, length 64
1: IP 192.168.0.2 > 192.168.0.1: GREv0, length 102: IP 192.168.1.2 > 192.168.1.1: ICMP echo reply, id 586, seq 1, length 64
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
Taehee Yoo
|
ad9bd8daf2 |
bonding: fix using uninitialized mode_lock
When a bonding interface is being created, it setups its mode and options. At that moment, it uses mode_lock so mode_lock should be initialized before that moment. rtnl_newlink() rtnl_create_link() alloc_netdev_mqs() ->setup() //bond_setup() ->newlink //bond_newlink bond_changelink() register_netdevice() ->ndo_init() //bond_init() After commit |
||
|
Taehee Yoo
|
f3b0a18bb6 |
net: remove unnecessary variables and callback
This patch removes variables and callback these are related to the nested
device structure.
devices that can be nested have their own nest_level variable that
represents the depth of nested devices.
In the previous patch, new {lower/upper}_level variables are added and
they replace old private nest_level variable.
So, this patch removes all 'nest_level' variables.
In order to avoid lockdep warning, ->ndo_get_lock_subclass() was added
to get lockdep subclass value, which is actually lower nested depth value.
But now, they use the dynamic lockdep key to avoid lockdep warning instead
of the subclass.
So, this patch removes ->ndo_get_lock_subclass() callback.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
Taehee Yoo
|
089bca2cae |
bonding: use dynamic lockdep key instead of subclass
All bonding device has same lockdep key and subclass is initialized with
nest_level.
But actual nest_level value can be changed when a lower device is attached.
And at this moment, the subclass should be updated but it seems to be
unsafe.
So this patch makes bonding use dynamic lockdep key instead of the
subclass.
Test commands:
ip link add bond0 type bond
for i in {1..5}
do
let A=$i-1
ip link add bond$i type bond
ip link set bond$i master bond$A
done
ip link set bond5 master bond0
Splat looks like:
[ 307.992912] WARNING: possible recursive locking detected
[ 307.993656] 5.4.0-rc3+ #96 Tainted: G W
[ 307.994367] --------------------------------------------
[ 307.995092] ip/761 is trying to acquire lock:
[ 307.995710] ffff8880513aac60 (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0xb8/0x500 [bonding]
[ 307.997045]
but task is already holding lock:
[ 307.997923] ffff88805fcbac60 (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0xb8/0x500 [bonding]
[ 307.999215]
other info that might help us debug this:
[ 308.000251] Possible unsafe locking scenario:
[ 308.001137] CPU0
[ 308.001533] ----
[ 308.001915] lock(&(&bond->stats_lock)->rlock#2/2);
[ 308.002609] lock(&(&bond->stats_lock)->rlock#2/2);
[ 308.003302]
*** DEADLOCK ***
[ 308.004310] May be due to missing lock nesting notation
[ 308.005319] 3 locks held by ip/761:
[ 308.005830] #0: ffffffff9fcc42b0 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x466/0x8a0
[ 308.006894] #1: ffff88805fcbac60 (&(&bond->stats_lock)->rlock#2/2){+.+.}, at: bond_get_stats+0xb8/0x500 [bonding]
[ 308.008243] #2: ffffffff9f9219c0 (rcu_read_lock){....}, at: bond_get_stats+0x9f/0x500 [bonding]
[ 308.009422]
stack backtrace:
[ 308.010124] CPU: 0 PID: 761 Comm: ip Tainted: G W 5.4.0-rc3+ #96
[ 308.011097] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 308.012179] Call Trace:
[ 308.012601] dump_stack+0x7c/0xbb
[ 308.013089] __lock_acquire+0x269d/0x3de0
[ 308.013669] ? register_lock_class+0x14d0/0x14d0
[ 308.014318] lock_acquire+0x164/0x3b0
[ 308.014858] ? bond_get_stats+0xb8/0x500 [bonding]
[ 308.015520] _raw_spin_lock_nested+0x2e/0x60
[ 308.016129] ? bond_get_stats+0xb8/0x500 [bonding]
[ 308.017215] bond_get_stats+0xb8/0x500 [bonding]
[ 308.018454] ? bond_arp_rcv+0xf10/0xf10 [bonding]
[ 308.019710] ? rcu_read_lock_held+0x90/0xa0
[ 308.020605] ? rcu_read_lock_sched_held+0xc0/0xc0
[ 308.021286] ? bond_get_stats+0x9f/0x500 [bonding]
[ 308.021953] dev_get_stats+0x1ec/0x270
[ 308.022508] bond_get_stats+0x1d1/0x500 [bonding]
Fixes:
|
||
|
Taehee Yoo
|
65de65d903 |
bonding: fix unexpected IFF_BONDING bit unset
The IFF_BONDING means bonding master or bonding slave device.
->ndo_add_slave() sets IFF_BONDING flag and ->ndo_del_slave() unsets
IFF_BONDING flag.
bond0<--bond1
Both bond0 and bond1 are bonding device and these should keep having
IFF_BONDING flag until they are removed.
But bond1 would lose IFF_BONDING at ->ndo_del_slave() because that routine
do not check whether the slave device is the bonding type or not.
This patch adds the interface type check routine before removing
IFF_BONDING flag.
Test commands:
ip link add bond0 type bond
ip link add bond1 type bond
ip link set bond1 master bond0
ip link set bond1 nomaster
ip link del bond1 type bond
ip link add bond1 type bond
Splat looks like:
[ 226.665555] proc_dir_entry 'bonding/bond1' already registered
[ 226.666440] WARNING: CPU: 0 PID: 737 at fs/proc/generic.c:361 proc_register+0x2a9/0x3e0
[ 226.667571] Modules linked in: bonding af_packet sch_fq_codel ip_tables x_tables unix
[ 226.668662] CPU: 0 PID: 737 Comm: ip Not tainted 5.4.0-rc3+ #96
[ 226.669508] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 226.670652] RIP: 0010:proc_register+0x2a9/0x3e0
[ 226.671612] Code: 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 39 01 00 00 48 8b 04 24 48 89 ea 48 c7 c7 a0 0b 14 9f 48 8b b0 e
0 00 00 00 e8 07 e7 88 ff <0f> 0b 48 c7 c7 40 2d a5 9f e8 59 d6 23 01 48 8b 4c 24 10 48 b8 00
[ 226.675007] RSP: 0018:ffff888050e17078 EFLAGS: 00010282
[ 226.675761] RAX: dffffc0000000008 RBX: ffff88805fdd0f10 RCX: ffffffff9dd344e2
[ 226.676757] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88806c9f6b8c
[ 226.677751] RBP: ffff8880507160f3 R08: ffffed100d940019 R09: ffffed100d940019
[ 226.678761] R10: 0000000000000001 R11: ffffed100d940018 R12: ffff888050716008
[ 226.679757] R13: ffff8880507160f2 R14: dffffc0000000000 R15: ffffed100a0e2c1e
[ 226.680758] FS: 00007fdc217cc0c0(0000) GS:ffff88806c800000(0000) knlGS:0000000000000000
[ 226.681886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 226.682719] CR2: 00007f49313424d0 CR3: 0000000050e46001 CR4: 00000000000606f0
[ 226.683727] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 226.684725] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 226.685681] Call Trace:
[ 226.687089] proc_create_seq_private+0xb3/0xf0
[ 226.687778] bond_create_proc_entry+0x1b3/0x3f0 [bonding]
[ 226.691458] bond_netdev_event+0x433/0x970 [bonding]
[ 226.692139] ? __module_text_address+0x13/0x140
[ 226.692779] notifier_call_chain+0x90/0x160
[ 226.693401] register_netdevice+0x9b3/0xd80
[ 226.694010] ? alloc_netdev_mqs+0x854/0xc10
[ 226.694629] ? netdev_change_features+0xa0/0xa0
[ 226.695278] ? rtnl_create_link+0x2ed/0xad0
[ 226.695849] bond_newlink+0x2a/0x60 [bonding]
[ 226.696422] __rtnl_newlink+0xb9f/0x11b0
[ 226.696968] ? rtnl_link_unregister+0x220/0x220
[ ... ]
Fixes:
|
||
|
Taehee Yoo
|
ab92d68fc2 |
net: core: add generic lockdep keys
Some interface types could be nested. (VLAN, BONDING, TEAM, MACSEC, MACVLAN, IPVLAN, VIRT_WIFI, VXLAN, etc..) These interface types should set lockdep class because, without lockdep class key, lockdep always warn about unexisting circular locking. In the current code, these interfaces have their own lockdep class keys and these manage itself. So that there are so many duplicate code around the /driver/net and /net/. This patch adds new generic lockdep keys and some helper functions for it. This patch does below changes. a) Add lockdep class keys in struct net_device - qdisc_running, xmit, addr_list, qdisc_busylock - these keys are used as dynamic lockdep key. b) When net_device is being allocated, lockdep keys are registered. - alloc_netdev_mqs() c) When net_device is being free'd llockdep keys are unregistered. - free_netdev() d) Add generic lockdep key helper function - netdev_register_lockdep_key() - netdev_unregister_lockdep_key() - netdev_update_lockdep_key() e) Remove unnecessary generic lockdep macro and functions f) Remove unnecessary lockdep code of each interfaces. After this patch, each interface modules don't need to maintain their lockdep keys. Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Eric Dumazet
|
a7137534b5 |
bonding: fix potential NULL deref in bond_update_slave_arr
syzbot got a NULL dereference in bond_update_slave_arr() [1],
happening after a failure to allocate bond->slave_arr
A workqueue (bond_slave_arr_handler) is supposed to retry
the allocation later, but if the slave is removed before
the workqueue had a chance to complete, bond->slave_arr
can still be NULL.
[1]
Failed to build slave-array.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN PTI
Modules linked in:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bond_update_slave_arr.cold+0xc6/0x198 drivers/net/bonding/bond_main.c:4039
RSP: 0018:ffff88018fe33678 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000290b000
RDX: 0000000000000000 RSI: ffffffff82b63037 RDI: ffff88019745ea20
RBP: ffff88018fe33760 R08: ffff880170754280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88019745ea00 R14: 0000000000000000 R15: ffff88018fe338b0
FS: 00007febd837d700(0000) GS:ffff8801dad00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004540a0 CR3: 00000001c242e005 CR4: 00000000001626f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
[<ffffffff82b5b45e>] __bond_release_one+0x43e/0x500 drivers/net/bonding/bond_main.c:1923
[<ffffffff82b5b966>] bond_release drivers/net/bonding/bond_main.c:2039 [inline]
[<ffffffff82b5b966>] bond_do_ioctl+0x416/0x870 drivers/net/bonding/bond_main.c:3562
[<ffffffff83ae25f4>] dev_ifsioc+0x6f4/0x940 net/core/dev_ioctl.c:328
[<ffffffff83ae2e58>] dev_ioctl+0x1b8/0xc70 net/core/dev_ioctl.c:495
[<ffffffff83995ffd>] sock_do_ioctl+0x1bd/0x300 net/socket.c:1088
[<ffffffff83996a80>] sock_ioctl+0x300/0x5d0 net/socket.c:1196
[<ffffffff81b124db>] vfs_ioctl fs/ioctl.c:47 [inline]
[<ffffffff81b124db>] file_ioctl fs/ioctl.c:501 [inline]
[<ffffffff81b124db>] do_vfs_ioctl+0xacb/0x1300 fs/ioctl.c:688
[<ffffffff81b12dc6>] SYSC_ioctl fs/ioctl.c:705 [inline]
[<ffffffff81b12dc6>] SyS_ioctl+0xb6/0xe0 fs/ioctl.c:696
[<ffffffff8101ccc8>] do_syscall_64+0x528/0x770 arch/x86/entry/common.c:305
[<ffffffff84400091>] entry_SYSCALL_64_after_hwframe+0x42/0xb7
Fixes:
|
||
|
David S. Miller
|
446bf64b61 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Merge conflict of mlx5 resolved using instructions in merge
commit
|
||
Greg Kroah-Hartman
|
fedcc6da10 |
bonding: no need to print a message if debugfs_create_dir() fails
The debugfs core now will print a message if this function fails, so don't duplicate that logic. Also, no need to change the code logic if the call fails either, as no debugfs calls should interrupt normal kernel code for any reason. Cc: Jay Vosburgh <j.vosburgh@gmail.com> Cc: Veaceslav Falico <vfalico@gmail.com> Cc: Andy Gospodarek <andy@greyhouse.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
YueHaibing
|
d595b03de2 |
bonding: Add vlan tx offload to hw_enc_features
As commit |
||
Thomas Falcon
|
12185dfe44 |
bonding: Force slave speed check after link state recovery for 802.3ad
The following scenario was encountered during testing of logical partition mobility on pseries partitions with bonded ibmvnic adapters in LACP mode. 1. Driver receives a signal that the device has been swapped, and it needs to reset to initialize the new device. 2. Driver reports loss of carrier and begins initialization. 3. Bonding driver receives NETDEV_CHANGE notifier and checks the slave's current speed and duplex settings. Because these are unknown at the time, the bond sets its link state to BOND_LINK_FAIL and handles the speed update, clearing AD_PORT_LACP_ENABLE. 4. Driver finishes recovery and reports that the carrier is on. 5. Bond receives a new notification and checks the speed again. The speeds are valid but miimon has not altered the link state yet. AD_PORT_LACP_ENABLE remains off. Because the slave's link state is still BOND_LINK_FAIL, no further port checks are made when it recovers. Though the slave devices are operational and have valid speed and duplex settings, the bond will not send LACPDU's. The simplest fix I can see is to force another speed check in bond_miimon_commit. This way the bond will update AD_PORT_LACP_ENABLE if needed when transitioning from BOND_LINK_FAIL to BOND_LINK_UP. CC: Jarod Wilson <jarod@redhat.com> CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
David S. Miller
|
af144a9834 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Two cases of overlapping changes, nothing fancy. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Vincent Bernat
|
ee4f56f46a |
bonding: fix value exported by Netlink for peer_notif_delay
IFLA_BOND_PEER_NOTIF_DELAY was set to the value of downdelay instead
of peer_notif_delay. After this change, the correct value is exported.
Fixes:
|
||
|
Vincent Bernat
|
07a4ddec3c |
bonding: add an option to specify a delay between peer notifications
Currently, gratuitous ARP/ND packets are sent every `miimon'
milliseconds. This commit allows a user to specify a custom delay
through a new option, `peer_notif_delay'.
Like for `updelay' and `downdelay', this delay should be a multiple of
`miimon' to avoid managing an additional work queue. The configuration
logic is copied from `updelay' and `downdelay'. However, the default
value cannot be set using a module parameter: Netlink or sysfs should
be used to configure this feature.
When setting `miimon' to 100 and `peer_notif_delay' to 500, we can
observe the 500 ms delay is respected:
20:30:19.354693 ARP, Request who-has 203.0.113.10 tell 203.0.113.10, length 28
20:30:19.874892 ARP, Request who-has 203.0.113.10 tell 203.0.113.10, length 28
20:30:20.394919 ARP, Request who-has 203.0.113.10 tell 203.0.113.10, length 28
20:30:20.914963 ARP, Request who-has 203.0.113.10 tell 203.0.113.10, length 28
In bond_mii_monitor(), I have tried to keep the lock logic readable.
The change is due to the fact we cannot rely on a notification to
lower the value of `bond->send_peer_notif' as `NETDEV_NOTIFY_PEERS' is
only triggered once every N times, while we need to decrement the
counter each time.
iproute2 also needs to be updated to be able to specify this new
attribute through `ip link'.
Signed-off-by: Vincent Bernat <vincent@bernat.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
Cong Wang
|
9d1bc24b52 |
bonding: validate ip header before check IPPROTO_IGMP
bond_xmit_roundrobin() checks for IGMP packets but it parses
the IP header even before checking skb->protocol.
We should validate the IP header with pskb_may_pull() before
using iph->protocol.
Reported-and-tested-by: syzbot+e5be16aa39ad6e755391@syzkaller.appspotmail.com
Fixes:
|
||
|
Eric Dumazet
|
b8bd72d317 |
bonding/main: fix NULL dereference in bond_select_active_slave()
A bonding master can be up while best_slave is NULL.
[12105.636318] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
[12105.638204] mlx4_en: eth1: Linkstate event 1 -> 1
[12105.648984] IP: bond_select_active_slave+0x125/0x250
[12105.653977] PGD 0 P4D 0
[12105.656572] Oops: 0000 [#1] SMP PTI
[12105.660487] gsmi: Log Shutdown Reason 0x03
[12105.664620] Modules linked in: kvm_intel loop act_mirred uhaul vfat fat stg_standard_ftl stg_megablocks stg_idt stg_hdi stg elephant_dev_num stg_idt_eeprom w1_therm wire i2c_mux_pca954x i2c_mux mlx4_i2c i2c_usb cdc_acm ehci_pci ehci_hcd i2c_iimc mlx4_en mlx4_ib ib_uverbs ib_core mlx4_core [last unloaded: kvm_intel]
[12105.685686] mlx4_core 0000:03:00.0: dispatching link up event for port 2
[12105.685700] mlx4_en: eth2: Linkstate event 2 -> 1
[12105.685700] mlx4_en: eth2: Link Up (linkstate)
[12105.724452] Workqueue: bond0 bond_mii_monitor
[12105.728854] RIP: 0010:bond_select_active_slave+0x125/0x250
[12105.734355] RSP: 0018:ffffaf146a81fd88 EFLAGS: 00010246
[12105.739637] RAX: 0000000000000003 RBX: ffff8c62b03c6900 RCX: 0000000000000000
[12105.746838] RDX: 0000000000000000 RSI: ffffaf146a81fd08 RDI: ffff8c62b03c6000
[12105.754054] RBP: ffffaf146a81fdb8 R08: 0000000000000001 R09: ffff8c517d387600
[12105.761299] R10: 00000000001075d9 R11: ffffffffaceba92f R12: 0000000000000000
[12105.768553] R13: ffff8c8240ae4800 R14: 0000000000000000 R15: 0000000000000000
[12105.775748] FS: 0000000000000000(0000) GS:ffff8c62bfa40000(0000) knlGS:0000000000000000
[12105.783892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[12105.789716] CR2: 0000000000000000 CR3: 0000000d0520e001 CR4: 00000000001626f0
[12105.796976] Call Trace:
[12105.799446] [<ffffffffac31d387>] bond_mii_monitor+0x497/0x6f0
[12105.805317] [<ffffffffabd42643>] process_one_work+0x143/0x370
[12105.811225] [<ffffffffabd42c7a>] worker_thread+0x4a/0x360
[12105.816761] [<ffffffffabd48bc5>] kthread+0x105/0x140
[12105.821865] [<ffffffffabd42c30>] ? rescuer_thread+0x380/0x380
[12105.827757] [<ffffffffabd48ac0>] ? kthread_associate_blkcg+0xc0/0xc0
[12105.834266] [<ffffffffac600241>] ret_from_fork+0x51/0x60
Fixes:
|
||
|
David S. Miller
|
d96ff269a0 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
The new route handling in ip_mc_finish_output() from 'net' overlapped with the new support for returning congestion notifications from BPF programs. In order to handle this I had to take the dev_loopback_xmit() calls out of the switch statement. The aquantia driver conflicts were simple overlapping changes. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
YueHaibing
|
30d8177e8a |
bonding: Always enable vlan tx offload
We build vlan on top of bonding interface, which vlan offload
is off, bond mode is 802.3ad (LACP) and xmit_hash_policy is
BOND_XMIT_POLICY_ENCAP34.
Because vlan tx offload is off, vlan tci is cleared and skb push
the vlan header in validate_xmit_vlan() while sending from vlan
devices. Then in bond_xmit_hash, __skb_flow_dissect() fails to
get information from protocol headers encapsulated within vlan,
because 'nhoff' is points to IP header, so bond hashing is based
on layer 2 info, which fails to distribute packets across slaves.
This patch always enable bonding's vlan tx offload, pass the vlan
packets to the slave devices with vlan tci, let them to handle
vlan implementation.
Fixes:
|
||
Jarod Wilson
|
f887e54ce3 |
bonding/options: convert to using slave printk macros
All of these printk instances benefit from having both master and slave device information included, so convert to using a standardized macro format and remove redundant information. Suggested-by: Joe Perches <joe@perches.com> CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Jarod Wilson
|
7ea2e4232d |
bonding/alb: convert to using slave printk macros
All of these printk instances benefit from having both master and slave device information included, so convert to using a standardized macro format and remove redundant information. Suggested-by: Joe Perches <joe@perches.com> CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Jarod Wilson
|
1772098196 |
bonding/802.3ad: convert to using slave printk macros
All of these printk instances benefit from having both master and slave device information included, so convert to using a standardized macro format and remove redundant information. Suggested-by: Joe Perches <joe@perches.com> CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Jarod Wilson
|
e2a7420df2 |
bonding/main: convert to using slave printk macros
All of these printk instances benefit from having both master and slave device information included, so convert to using a standardized macro format and remove redundant information. Suggested-by: Joe Perches <joe@perches.com> CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Jarod Wilson
|
f43b653026 |
bonding: fix error messages in bond_do_fail_over_mac
Passing the bond name again to debug output when referencing slave is wrong. We're trying to set the bond's MAC to that of the new_active slave, so adjust the error message slightly and pass in the slave's name, not the bond's. Then we're trying to set the MAC on the old active slave, but putting the new active slave's name in the output. While we're at it, clarify the error messages so you know which one actually triggered. CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
Jarod Wilson
|
75466dce4d |
bonding: improve event debug usability
Seeing bonding debug log data along the lines of "event: 5" is a bit spartan, and often requires a lookup table if you don't remember what every event is. Make use of netdev_cmd_to_name for an improved debugging experience, so for the prior example, you'll see: "bond_netdev_event received NETDEV_REGISTER" instead (both are prefixed with the device for which the event pertains). CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: netdev@vger.kernel.org Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
David S. Miller
|
a6cdeeb16b |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Some ISDN files that got removed in net-next had some changes done in mainline, take the removals. Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Ariel Levkovich
|
2e770b507c |
net: bonding: Inherit MPLS features from slave devices
When setting the bonding interface net device features, the kernel code doesn't address the slaves' MPLS features and doesn't inherit them. Therefore, HW offloads that enhance performance such as checksumming and TSO are disabled for MPLS tagged traffic flowing via the bonding interface. The patch add the inheritance of the MPLS features from the slave devices with a similar logic to setting the bonding device's VLAN and encapsulation features. CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Veaceslav Falico <vfalico@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> Signed-off-by: Ariel Levkovich <lariel@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
Linus Torvalds
|
2f4c533499 |
SPDX update for 5.2-rc3, round 1
Here is another set of reviewed patches that adds SPDX tags to different kernel files, based on a set of rules that are being used to parse the comments to try to determine that the license of the file is "GPL-2.0-or-later" or "GPL-2.0-only". Only the "obvious" versions of these matches are included here, a number of "non-obvious" variants of text have been found but those have been postponed for later review and analysis. There is also a patch in here to add the proper SPDX header to a bunch of Kbuild files that we have missed in the past due to new files being added and forgetting that Kbuild uses two different file names for Makefiles. This issue was reported by the Kbuild maintainer. These patches have been out for review on the linux-spdx@vger mailing list, and while they were created by automatic tools, they were hand-verified by a bunch of different people, all whom names are on the patches are reviewers. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXPCHLg8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykxyACgql6ktH+Tv8Ho1747kKPiFca1Jq0AoK5HORXI yB0DSTXYNjMtH41ypnsZ =x2f8 -----END PGP SIGNATURE----- Merge tag 'spdx-5.2-rc3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull yet more SPDX updates from Greg KH: "Here is another set of reviewed patches that adds SPDX tags to different kernel files, based on a set of rules that are being used to parse the comments to try to determine that the license of the file is "GPL-2.0-or-later" or "GPL-2.0-only". Only the "obvious" versions of these matches are included here, a number of "non-obvious" variants of text have been found but those have been postponed for later review and analysis. There is also a patch in here to add the proper SPDX header to a bunch of Kbuild files that we have missed in the past due to new files being added and forgetting that Kbuild uses two different file names for Makefiles. This issue was reported by the Kbuild maintainer. These patches have been out for review on the linux-spdx@vger mailing list, and while they were created by automatic tools, they were hand-verified by a bunch of different people, all whom names are on the patches are reviewers" * tag 'spdx-5.2-rc3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (82 commits) treewide: Add SPDX license identifier - Kbuild treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 225 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 224 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 223 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 222 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 221 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 220 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 218 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 217 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 216 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 215 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 214 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 213 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 211 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 210 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 207 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 203 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 ... |
||
|
Linus Torvalds
|
036e343109 |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix OOPS during nf_tables rule dump, from Florian Westphal.
2) Use after free in ip_vs_in, from Yue Haibing.
3) Fix various kTLS bugs (NULL deref during device removal resync,
netdev notification ignoring, etc.) From Jakub Kicinski.
4) Fix ipv6 redirects with VRF, from David Ahern.
5) Memory leak fix in igmpv3_del_delrec(), from Eric Dumazet.
6) Missing memory allocation failure check in ip6_ra_control(), from
Gen Zhang. And likewise fix ip_ra_control().
7) TX clean budget logic error in aquantia, from Igor Russkikh.
8) SKB leak in llc_build_and_send_ui_pkt(), from Eric Dumazet.
9) Double frees in mlx5, from Parav Pandit.
10) Fix lost MAC address in r8169 during PCI D3, from Heiner Kallweit.
11) Fix botched register access in mvpp2, from Antoine Tenart.
12) Use after free in napi_gro_frags(), from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (89 commits)
net: correct zerocopy refcnt with udp MSG_MORE
ethtool: Check for vlan etype or vlan tci when parsing flow_rule
net: don't clear sock->sk early to avoid trouble in strparser
net-gro: fix use-after-free read in napi_gro_frags()
net: dsa: tag_8021q: Create a stable binary format
net: dsa: tag_8021q: Change order of rx_vid setup
net: mvpp2: fix bad MVPP2_TXQ_SCHED_TOKEN_CNTR_REG queue value
ipv4: tcp_input: fix stack out of bounds when parsing TCP options.
mlxsw: spectrum: Prevent force of 56G
mlxsw: spectrum_acl: Avoid warning after identical rules insertion
net: dsa: mv88e6xxx: fix handling of upper half of STATS_TYPE_PORT
r8169: fix MAC address being lost in PCI D3
net: core: support XDP generic on stacked devices.
netvsc: unshare skb in VF rx handler
udp: Avoid post-GRO UDP checksum recalculation
net: phy: dp83867: Set up RGMII TX delay
net: phy: dp83867: do not call config_init twice
net: phy: dp83867: increase SGMII autoneg timer duration
net: phy: dp83867: fix speed 10 in sgmii mode
net: phy: marvell10g: report if the PHY fails to boot firmware
...
|
||
Thomas Gleixner
|
2874c5fd28 |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jarod Wilson
|
334031219a |
bonding/802.3ad: fix slave link initialization transition states
Once in a while, with just the right timing, 802.3ad slaves will fail to
properly initialize, winding up in a weird state, with a partner system
mac address of 00:00:00:00:00:00. This started happening after a fix to
properly track link_failure_count tracking, where an 802.3ad slave that
reported itself as link up in the miimon code, but wasn't able to get a
valid speed/duplex, started getting set to BOND_LINK_FAIL instead of
BOND_LINK_DOWN. That was the proper thing to do for the general "my link
went down" case, but has created a link initialization race that can put
the interface in this odd state.
The simple fix is to instead set the slave link to BOND_LINK_DOWN again,
if the link has never been up (last_link_up == 0), so the link state
doesn't bounce from BOND_LINK_DOWN to BOND_LINK_FAIL -- it hasn't failed
in this case, it simply hasn't been up yet, and this prevents the
unnecessary state change from DOWN to FAIL and getting stuck in an init
failure w/o a partner mac.
Fixes:
|
||
|
Thomas Gleixner
|
9e567af4f0 |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 90
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa the full gnu general public license is included in this distribution in the file called license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 4 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520075211.959886972@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Thomas Gleixner
|
0a65089ec5 |
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 5
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses the full gnu general public license is included in this distribution in the file called license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154041.052102771@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Thomas Gleixner
|
ec8f24b7fa |
treewide: Add SPDX license identifier - Makefile/Kconfig
Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Jarod Wilson
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a9b8a2b39c |
bonding: fix arp_validate toggling in active-backup mode
There's currently a problem with toggling arp_validate on and off with an active-backup bond. At the moment, you can start up a bond, like so: modprobe bonding mode=1 arp_interval=100 arp_validate=0 arp_ip_targets=192.168.1.1 ip link set bond0 down echo "ens4f0" > /sys/class/net/bond0/bonding/slaves echo "ens4f1" > /sys/class/net/bond0/bonding/slaves ip link set bond0 up ip addr add 192.168.1.2/24 dev bond0 Pings to 192.168.1.1 work just fine. Now turn on arp_validate: echo 1 > /sys/class/net/bond0/bonding/arp_validate Pings to 192.168.1.1 continue to work just fine. Now when you go to turn arp_validate off again, the link falls flat on it's face: echo 0 > /sys/class/net/bond0/bonding/arp_validate dmesg ... [133191.911987] bond0: Setting arp_validate to none (0) [133194.257793] bond0: bond_should_notify_peers: slave ens4f0 [133194.258031] bond0: link status definitely down for interface ens4f0, disabling it [133194.259000] bond0: making interface ens4f1 the new active one [133197.330130] bond0: link status definitely down for interface ens4f1, disabling it [133197.331191] bond0: now running without any active interface! The problem lies in bond_options.c, where passing in arp_validate=0 results in bond->recv_probe getting set to NULL. This flies directly in the face of commit |
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Michal Kubecek
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ae0be8de9a |
netlink: make nla_nest_start() add NLA_F_NESTED flag
Even if the NLA_F_NESTED flag was introduced more than 11 years ago, most netlink based interfaces (including recently added ones) are still not setting it in kernel generated messages. Without the flag, message parsers not aware of attribute semantics (e.g. wireshark dissector or libmnl's mnl_nlmsg_fprintf()) cannot recognize nested attributes and won't display the structure of their contents. Unfortunately we cannot just add the flag everywhere as there may be userspace applications which check nlattr::nla_type directly rather than through a helper masking out the flags. Therefore the patch renames nla_nest_start() to nla_nest_start_noflag() and introduces nla_nest_start() as a wrapper adding NLA_F_NESTED. The calls which add NLA_F_NESTED manually are rewritten to use nla_nest_start(). Except for changes in include/net/netlink.h, the patch was generated using this semantic patch: @@ expression E1, E2; @@ -nla_nest_start(E1, E2) +nla_nest_start_noflag(E1, E2) @@ expression E1, E2; @@ -nla_nest_start_noflag(E1, E2 | NLA_F_NESTED) +nla_nest_start(E1, E2) Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Acked-by: Jiri Pirko <jiri@mellanox.com> Acked-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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David S. Miller
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6b0a7f84ea |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflict resolution of af_smc.c from Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net> |