Re: 3.15 & Bonding

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On 02.04.2014 12:46, Eric Dumazet wrote:
> On Wed, 2014-04-02 at 12:14 +0200, poma wrote:
>> Are you all all right?
>> New Tour de Bugs...
>>
>> /sys/devices/virtual/net/bond0/bonding/mode:
>> active-backup 1
>>
>> - systemd-networkd
>> dmesg:
>> BUG: sleeping function called from invalid context at mm/slub.c:965
>> in_atomic(): 1, irqs_disabled(): 0, pid: 593, name: systemd-network
>> 2 locks held by systemd-network/593:
>>  #0:  (rtnl_mutex){+.+.+.}, at: [<ffffffff8169e57b>] rtnetlink_rcv+0x1b/0x40
>>  #1:  (&bond->curr_slave_lock){+...+.}, at: [<ffffffffa0487291>]
>> bond_enslave+0xf31/0xf50 [bonding]
>> CPU: 2 PID: 593 Comm: systemd-network Not tainted
>> 3.15.0-0.rc0.git2.1.fc21.x86_64 #1
>> Call Trace:
>> dump_stack+0x4d/0x66
>> __might_sleep+0x17e/0x230
>> kmem_cache_alloc_node+0x4a/0x390
>>  [<ffffffff816779dd>] __alloc_skb+0x5d/0x2d0
>>  [<ffffffff816a0bd8>] rtmsg_ifinfo+0x48/0x110
>>  [<ffffffff810fa18d>] ? trace_hardirqs_on+0xd/0x10
>>  [<ffffffff8109dd45>] ? __local_bh_enable_ip+0x75/0xe0
>>  [<ffffffffa0485ca7>] bond_change_active_slave+0x197/0x670 [bonding]
>>  [<ffffffffa0486264>] bond_select_active_slave+0xe4/0x1e0 [bonding]
>>  [<ffffffffa048729a>] bond_enslave+0xf3a/0xf50 [bonding]
>>  [<ffffffff8169fdf2>] do_setlink+0xa02/0xa70
>>  [<ffffffff813f4fc6>] ? nla_parse+0x96/0xe0
>>  [<ffffffff816a0da1>] rtnl_setlink+0xc1/0x130
>>  [<ffffffff810a1739>] ? ns_capable+0x39/0x70
>>  [<ffffffff8169e64b>] rtnetlink_rcv_msg+0xab/0x270
>>  [<ffffffff8169e57b>] ? rtnetlink_rcv+0x1b/0x40
>>  [<ffffffff8169e57b>] ? rtnetlink_rcv+0x1b/0x40
>>  [<ffffffff8169e5a0>] ? rtnetlink_rcv+0x40/0x40
>>  [<ffffffff816c3e29>] netlink_rcv_skb+0xa9/0xc0
>>  [<ffffffff8169e58a>] rtnetlink_rcv+0x2a/0x40
>>  [<ffffffff816c3420>] netlink_unicast+0x100/0x1e0
>>  [<ffffffff816c3847>] netlink_sendmsg+0x347/0x770
>>  [<ffffffff8166c78c>] sock_sendmsg+0x9c/0xe0
>>  [<ffffffff811de22f>] ? might_fault+0x5f/0xb0
>>  [<ffffffff811de278>] ? might_fault+0xa8/0xb0
>>  [<ffffffff811de22f>] ? might_fault+0x5f/0xb0
>>  [<ffffffff8166cd04>] SYSC_sendto+0x124/0x1d0
>>  [<ffffffff81024879>] ? sched_clock+0x9/0x10
>>  [<ffffffff810ddb75>] ? local_clock+0x25/0x30
>>  [<ffffffff8111cfc9>] ? current_kernel_time+0x69/0xd0
>>  [<ffffffff810fa0b5>] ? trace_hardirqs_on_caller+0x105/0x1d0
>>  [<ffffffff810fa18d>] ? trace_hardirqs_on+0xd/0x10
>>  [<ffffffff8166dede>] SyS_sendto+0xe/0x10
>>  [<ffffffff817e79a9>] system_call_fastpath+0x16/0x1b
> 
> Should be fixed by
> 
> commit 072256d1f2b8ba0bbb265d590c703f3d57a39d6a
> Author: Veaceslav Falico <vfalico@xxxxxxxxxx>
> Date:   Thu Mar 6 15:33:22 2014 +0100
> 
>     bonding: make slave status notifications GFP_ATOMIC
>     

Thanks for picking this one!

Tested with
3.15.0-0.rc0.git3.2.fc21.x86_64
i.e.
3.15.0-0.rc0.git3.1.fc21.x86_64[1] &
bonding-make-slave-status-notifications-GFP_ATOMIC.patch[2]

PASSED!


poma


[1]
http://koji.fedoraproject.org/koji/buildinfo?buildID=508615
[2]
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/drivers/net/bonding?id=072256d1f2b8ba0bbb265d590c703f3d57a39d6a

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