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From:   Eric Dumazet <edumazet@google.com>
Date:   Fri, 9 Dec 2022 09:39:14 +0100
Message-ID: <CANn89iK8BtCDXsH=fwnUg8fzP_tDB-=wmezkc-dCCVpp-FqzxA@mail.gmail.com>
Subject: Re: [PATCH RESEND net-next] tcp: socket-specific version of WARN_ON_ONCE()
To:     Breno Leitao <leitao@debian.org>
Cc:     David Miller <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        netdev <netdev@vger.kernel.org>, leit@fb.com,
        Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
        Paolo Abeni <pabeni@redhat.com>,
        David Ahern <dsahern@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
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On Thu, Dec 8, 2022 at 4:44 PM Breno Leitao <leitao@debian.org> wrote:
>
> On Wed, Dec 07, 2022 at 06:59:38PM +0100, Eric Dumazet wrote:

> > Try to give us symbols with scripts/decode_stacktrace.sh , thanks.
>
> Sorry, here it is:
>
>  [749619.538804] WARNING: CPU: 19 PID: 0 at net/ipv4/tcp.c:4552 tcp_sock_=
warn+0x6/0x20
>  [749619.553969] Modules linked in: sch_fq sunrpc bpf_preload tls act_gac=
t cls_bpf tcp_diag inet_diag skx_edac nfit libnvdimm x86_pkg_temp_thermal i=
ntel_powerclamp coretemp kvm_intel iTCO_wdt iTCO_vendor_support kvm evdev s=
es irqbypass enclosure i2c_i801 i2c_smbus ipmi_si ipmi_devintf ipmi_msghand=
ler acpi_cpufreq button tpm_crb sch_fq_codel vhost_net tun tap vhost vhost_=
iotlb virtio_net net_failover failover mpls_gso mpls_iptunnel mpls_router i=
p_tunnel fou ip6_udp_tunnel udp_tunnel fuse sg nvme mpi3mr scsi_transport_s=
as nvme_core xhci_pci xhci_hcd loop efivarfs autofs4
>  [749619.678066] Hardware name: XXXXX
>  [749619.695308] RIP: tcp_sock_warn+0x6/0x20
>  [749619.704034] Code: 4d 01 3e 85 c0 0f 84 57 ff ff ff 48 8b 0c 24 44 8b=
 01 eb 82 e8 eb b7 14 00 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 53=
 <0f> 0b 48 85 ff 0f 85 77 70 14 00 5b c3 66 66 2e 0f 1f 84 00 00 00
>  All code
>  =3D=3D=3D=3D=3D=3D=3D=3D
>     0:  4d 01 3e                add    %r15,(%r14)
>     3:  85 c0                   test   %eax,%eax
>     5:  0f 84 57 ff ff ff       je     0xffffffffffffff62
>     b:  48 8b 0c 24             mov    (%rsp),%rcx
>     f:  44 8b 01                mov    (%rcx),%r8d
>    12:  eb 82                   jmp    0xffffffffffffff96
>    14:  e8 eb b7 14 00          callq  0x14b804
>    19:  66 66 2e 0f 1f 84 00    data16 nopw %cs:0x0(%rax,%rax,1)
>    20:  00 00 00 00
>    24:  0f 1f 44 00 00          nopl   0x0(%rax,%rax,1)
>    29:  53                      push   %rbx
>    2a:* 0f 0b                   ud2             <-- trapping instruction
>    2c:  48 85 ff                test   %rdi,%rdi
>    2f:  0f 85 77 70 14 00       jne    0x1470ac
>    35:  5b                      pop    %rbx
>    36:  c3                      retq
>    37:  66                      data16
>    38:  66                      data16
>    39:  2e                      cs
>    3a:  0f                      .byte 0xf
>    3b:  1f                      (bad)
>    3c:  84 00                   test   %al,(%rax)
>         ...
>
>  Code starting with the faulting instruction
>  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>     0:  0f 0b                   ud2
>     2:  48 85 ff                test   %rdi,%rdi
>     5:  0f 85 77 70 14 00       jne    0x147082
>     b:  5b                      pop    %rbx
>     c:  c3                      retq
>     d:  66                      data16
>     e:  66                      data16
>     f:  2e                      cs
>    10:  0f                      .byte 0xf
>    11:  1f                      (bad)
>    12:  84 00                   test   %al,(%rax)
>         ...
>  [749619.741779] RSP: 0018:ffffc90000d08988 EFLAGS: 00010246
>  [749619.752436] RAX: ffff88814b57f5c0 RBX: ffff8881bd2540c0 RCX: ffffc90=
000d08a34
>  [749619.766900] RDX: 0000000000000000 RSI: 00000000cda8f4af RDI: ffff888=
1bd2540c0
>  [749619.781364] RBP: 0000000000000000 R08: ffffc90000d08a38 R09: 0000000=
0cda8f44f
>  [749619.795831] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000=
000000000
>  [749619.810300] R13: ffffc90000d08a34 R14: 0000000000011406 R15: 0000000=
000000000
>  [749619.824788] FS:  0000000000000000(0000) GS:ffff88903f8c0000(0000) kn=
lGS:0000000000000000
>  [749619.841168] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>  [749619.852857] CR2: 000000000007c2e9 CR3: 0000000b82412002 CR4: 0000000=
0007706e0
>  [749619.867331] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000=
000000000
>  [749619.881800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000=
000000400
>  [749619.896260] PKRU: 55555554
>  [749619.901859] Call Trace:
>  [749619.906927]  <IRQ>
>  [749619.911129] tcp_fastretrans_alert+0x988/0x9e0
>  [749619.920222] ? kmem_cache_free+0x33c/0x3d0
>  [749619.928606] tcp_ack+0x8b4/0x1360
>  [749619.935425] ? __cgroup_bpf_run_filter_skb+0x185/0x440
>  [749619.945910] tcp_rcv_established+0x2f3/0x660
>  [749619.954639] ? sk_filter_trim_cap+0xbc/0x220
>  [749619.963358] tcp_v6_do_rcv+0xbe/0x3e0
>  [749619.970863] tcp_v6_rcv+0xc01/0xc90

Still no symbols (file name : line number).

>  [749619.978029] ip6_protocol_deliver_rcu+0xbd/0x450
>  [749619.987453] ip6_input_finish+0x3d/0x60
>  [749619.995313] ip6_input+0xb5/0xc0
>  [749620.001958] ip6_sublist_rcv_finish+0x37/0x50
>  [749620.010851] ip6_sublist_rcv+0x1dd/0x270
>  [749620.018877] ipv6_list_rcv+0x113/0x140
>  [749620.026552] __netif_receive_skb_list_core+0x1a0/0x210
>  [749620.037025] netif_receive_skb_list_internal+0x186/0x2a0
>  [749620.047838] ? napi_gro_complete+0x6c/0xd0
>  [749620.056215] gro_normal_list.part.171+0x19/0x40
>  [749620.065471] napi_complete_done+0x65/0x150
>  [749620.073856] bnxt_poll_p5+0x25b/0x2b0
>  [749620.081369] __napi_poll+0x25/0x120
>  [749620.088537] net_rx_action+0x189/0x300
>  [749620.096224] __do_softirq+0xbb/0x271
>  [749620.103571] irq_exit_rcu+0x97/0xa0
>  [749620.110732] common_interrupt+0x7f/0xa0
>  [749620.118595]  </IRQ>
>  [749620.122964] asm_common_interrupt+0x1e/0x40
>  [749620.131511] RIP: cpuidle_enter_state+0xc2/0x340
>  [749620.141621] Code: 48 89 c5 0f 1f 44 00 00 31 ff e8 f9 8d 73 ff 45 84=
 ff 74 12 9c 58 f6 c4 02 0f 85 38 02 00 00 31 ff e8 b2 36 79 ff fb 45 85 f6=
 <0f> 88 e8 00 00 00 49 63 d6 48 2b 2c 24 48 6b ca 68 48 8d 04 52 48