netdev - Re: [net-next] WARNING: CPU: 2 PID: 1189 at ../net/core/skbuff.c:5412 skb_try

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Message-ID: <9f0ed8cb-7226-fdd3-ed78-7752227085bc@ti.com>
Date:   Fri, 6 Aug 2021 13:41:56 +0300
From:   Grygorii Strashko <grygorii.strashko@...com>
To:     Paolo Abeni <pabeni@...hat.com>, netdev <netdev@...r.kernel.org>
Subject: Re: [net-next] WARNING: CPU: 2 PID: 1189 at ../net/core/skbuff.c:5412
 skb_try_coalesce+0x354/0x368



On 06/08/2021 10:53, Paolo Abeni wrote:
> Hello,
> 
> On Thu, 2021-08-05 at 22:04 +0300, Grygorii Strashko wrote:
>> with current net-next is see below splat when run netperf TCP_STREAM
>>
>> <REMOTE HOST> netperf -l 10 -H 192.168.1.2 -t TCP_STREAM -c -C -j -B "am6 " -s 1 -s 1
>>
>> Is this know issue?
>>
>> <FAILED DUT>
>> root@...5xx-evm:~# uname -a
>> Linux am65xx-evm 5.14.0-rc3-00973-g372bbdd5bb3f #5 SMP PREEMPT Thu Aug 5 21:57:28 EEST 2021 aarch64 GNU/Linux
>>
>> root@...5xx-evm:~# [  227.929271] ------------[ cut here ]------------
>> [  227.933917] WARNING: CPU: 2 PID: 1189 at ../net/core/skbuff.c:5412 skb_try_coalesce+0x354/0x368
>> [  227.942624] Modules linked in:
>> [  227.945679] CPU: 2 PID: 1189 Comm: netserver Not tainted 5.14.0-rc3-00973-g372bbdd5bb3f #5
>> [  227.953931] Hardware name: Texas Instruments AM654 Base Board (DT)
>> [  227.960098] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--)
>> [  227.966097] pc : skb_try_coalesce+0x354/0x368
>> [  227.970449] lr : tcp_try_coalesce.part.74+0x48/0x180
>> [  227.975410] sp : ffff80001544fa40
>> [  227.978716] x29: ffff80001544fa40 x28: ffff0008013a0dc0 x27: 0000000000000000
>> [  227.985851] x26: 0000000000000000 x25: 0000000000002d20 x24: ffff000809f25240
>> [  227.992984] x23: ffff000809f286c0 x22: 0000000000002d40 x21: ffff80001544fac4
>> [  228.000118] x20: ffff000807536600 x19: ffff000807535800 x18: 0000000000000000
>> [  228.007251] x17: 0000000000000000 x16: 0000000000000000 x15: ffff00080794a882
>> [  228.014384] x14: 72657074656e0066 x13: 0000000000000080 x12: ffff000800792e58
>> [  228.021517] x11: 0000000000000000 x10: 0000000000000001 x9 : ffff000000000000
>> [  228.028650] x8 : 0000000000002798 x7 : 00000000000005a8 x6 : ffff000809f24c82
>> [  228.035783] x5 : 0000000000000000 x4 : 0000000000000640 x3 : 0000000000000001
>> [  228.042915] x2 : ffff80001544fb57 x1 : 0000000000000007 x0 : ffff000809f286c0
>> [  228.050050] Call trace:
>> [  228.052490]  skb_try_coalesce+0x354/0x368
>> [  228.056497]  tcp_try_coalesce.part.74+0x48/0x180
>> [  228.061108]  tcp_queue_rcv+0x12c/0x170
>> [  228.064853]  tcp_rcv_established+0x558/0x6f8
>> [  228.069118]  tcp_v4_do_rcv+0x90/0x220
>> [  228.072775]  __release_sock+0x70/0xb8
>> [  228.076439]  release_sock+0x30/0x90
>> [  228.079926]  tcp_recvmsg+0x90/0x1d0
>> [  228.083411]  inet_recvmsg+0x54/0x128
>> [  228.086983]  __sys_recvfrom+0xbc/0x148
>> [  228.090728]  __arm64_sys_recvfrom+0x24/0x38
>> [  228.094906]  invoke_syscall+0x44/0x100
>> [  228.098655]  el0_svc_common+0x3c/0xd8
>> [  228.102314]  do_el0_svc+0x28/0x90
>> [  228.105626]  el0_svc+0x24/0x38
>> [  228.108679]  el0t_64_sync_handler+0x90/0xb8
>> [  228.112857]  el0t_64_sync+0x178/0x17c
>> [  228.116517] ---[ end trace 2e0ec9d02424634a ]---        .0
> 
> The above should be fixed by the net-next
> commit af352460b465d7a8afbeb3be07c0268d1d48a4d7
> 
> Could you please have a shot at that?
> 

Do not see it anymore. My branch based on commit
0ca8d3ca4561 (linux-net-next/master) Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Thank you.

-- 
Best regards,
grygorii