netdev - Re: [RFC,net-next] tcp: add support for read with offset when using MSG

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Message-Id: <964350FD-0978-4BFF-93C2-DDBC701FDADA@gmail.com>
Date: Wed, 17 Jan 2024 19:11:38 +0200
From: Martin Zaharinov <micron10@...il.com>
To: Jon Maloy <jmaloy@...hat.com>
Cc: netdev <netdev@...r.kernel.org>
Subject: Re: [RFC,net-next] tcp: add support for read with offset when using
 MSG_PEEK

Hi Jon,

Two scenarios :

1. in machine with 1 test client , i try to open nginx web interface and machine restart :)

2. when machine boot and start all service and start connect ppp users machine reboot with this bug.

m.


P.S.

this is bug when try to open web: 


Jan 17 09:32:49 BUG: unable to handle page fault for address: 00007ffd7e893a70
Jan 17 09:32:49 #PF: supervisor read access in kernel mode
Jan 17 09:32:49 #PF: error_code(0x0001) - permissions violation
Jan 17 09:32:49 PGD 14347a067 P4D 14347a067 PUD 135bc2067 PMD 104e33067 PTE 800000025667d067
Jan 17 09:32:49 Oops: 0001 [#1] SMP
Jan 17 09:32:49 CPU: 2 PID: 1805 Comm: nginx Tainted: G           O       6.7.0 #1
Jan 17 09:32:49 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
Jan 17 09:32:49 RIP: 0010:tcp_recvmsg_locked+0x498/0xea0
Jan 17 09:32:49 Code: a3 07 00 00 80 fa 02 0f 84 88 07 00 00 84 d2 0f 84 f1 04 00 00 41 8b 8c 24 d8 05 00 00 49 8b 53 20 4c 8d 7c 24 44 89 4c 24 44 <48> 83 3a 00 0f 85 e5 fb ff ff 49 8b 73 30 48 83 fe 01 0f 86 c4 04
Jan 17 09:32:49 RSP: 0018:ffffb7a9039d7d00 EFLAGS: 00010202
Jan 17 09:32:49 RAX: 0000000000000042 RBX: ffff94ae43581c80 RCX: 00000000662a8e9e
Jan 17 09:32:49 RDX: 00007ffd7e893a70 RSI: ffffb7a9039d7e18 RDI: ffff94ae43581c80
Jan 17 09:32:49 RBP: ffffb7a9039d7d78 R08: ffffb7a9039d7d90 R09: ffffb7a9039d7d8c
Jan 17 09:32:49 R10: 0000000000000002 R11: ffffb7a9039d7e18 R12: ffff94ae43581c80
Jan 17 09:32:49 R13: 0000000000000000 R14: 0000000000000000 R15: ffffb7a9039d7d44
Jan 17 09:32:49 FS:  00007f957a7b4740(0000) GS:ffff94af77c80000(0000) knlGS:0000000000000000
Jan 17 09:32:49 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 17 09:32:49 CR2: 00007ffd7e893a70 CR3: 000000014346f000 CR4: 00000000003506f0
Jan 17 09:32:49 Call Trace:
Jan 17 09:32:49  <TASK>
Jan 17 09:32:49  ? __die+0xe4/0xf0
Jan 17 09:32:49  ? page_fault_oops+0x144/0x3e0
Jan 17 09:32:49  ? unix_stream_read_generic+0x24f/0xb20
Jan 17 09:32:49  ? exc_page_fault+0x5d/0xa0
Jan 17 09:32:49  ? asm_exc_page_fault+0x22/0x30
Jan 17 09:32:49  ? tcp_recvmsg_locked+0x498/0xea0
Jan 17 09:32:49  ? __schedule+0x36c/0x960
Jan 17 09:32:49  tcp_recvmsg+0x5c/0x1e0
Jan 17 09:32:49  ? schedule_hrtimeout_range_clock+0x28b/0x310
Jan 17 09:32:49  ? vmxnet3_tq_tx_complete.isra.0+0x2b0/0x2b0 [vmxnet3]
Jan 17 09:32:49  inet_recvmsg+0x2a/0x90
Jan 17 09:32:49  __sys_recvfrom+0x15e/0x200
Jan 17 09:32:49  ? ep_busy_loop_end+0x60/0x60
Jan 17 09:32:49  ? ktime_get_ts64+0x44/0xe0
Jan 17 09:32:49  __x64_sys_recvfrom+0x1b/0x20
Jan 17 09:32:49  do_syscall_64+0x2c/0xa0
Jan 17 09:32:49  entry_SYSCALL_64_after_hwframe+0x46/0x4e
Jan 17 09:32:49 RIP: 0033:0x7f957a8f62a9
Jan 17 09:32:49 Code: 0c 00 64 c7 02 02 00 00 00 eb bf 66 0f 1f 44 00 00 80 3d a9 e0 0c 00 00 41 89 ca 74 1c 45 31 c9 45 31 c0 b8 2d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 67 c3 66 0f 1f 44 00 00 55 48 83 ec 20 48 89
Jan 17 09:32:49 RSP: 002b:00007ffd7e893a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
Jan 17 09:32:49 RAX: ffffffffffffffda RBX: 00007f9579cb73d0 RCX: 00007f957a8f62a9
Jan 17 09:32:49 RDX: 0000000000000001 RSI: 00007ffd7e893a70 RDI: 000000000000000d
Jan 17 09:32:49 RBP: 0000000001b29250 R08: 0000000000000000 R09: 0000000000000000
Jan 17 09:32:49 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
Jan 17 09:32:49 R13: 0000000001a871a0 R14: 00007ffd7e893a70 R15: 0000000000000000
Jan 17 09:32:49  </TASK>
Jan 17 09:32:49 Modules linked in: pppoe pppox ppp_generic slhc nf_conntrack_sip nf_conntrack_ftp nf_conntrack_pptp nft_ct nft_nat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables netconsole virtio_net net_failover failover virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring vmxnet3 aesni_intel crypto_simd cryptd
Jan 17 09:32:49 CR2: 00007ffd7e893a70
Jan 17 09:32:49 BUG: unable to handle page fault for address: 00007ffd7e893a70
Jan 17 09:32:50 ---[ end trace 0000000000000000 ]---
Jan 17 09:32:50 #PF: supervisor read access in kernel mode
Jan 17 09:32:50 RIP: 0010:tcp_recvmsg_locked+0x498/0xea0
Jan 17 09:32:50 #PF: error_code(0x0001) - permissions violation
Jan 17 09:32:50 Code: a3 07 00 00 80 fa 02 0f 84 88 07 00 00 84 d2 0f 84 f1 04 00 00 41 8b 8c 24 d8 05 00 00 49 8b 53 20 4c 8d 7c 24 44 89 4c 24 44 <48> 83 3a 00 0f 85 e5 fb ff ff 49 8b 73 30 48 83 fe 01 0f 86 c4 04
Jan 17 09:32:50 PGD 10d24b067
Jan 17 09:32:50 RSP: 0018:ffffb7a9039d7d00 EFLAGS: 00010202
Jan 17 09:32:50 P4D 10d24b067
Jan 17 09:32:50 RAX: 0000000000000042 RBX: ffff94ae43581c80 RCX: 00000000662a8e9e
Jan 17 09:32:50 PUD 10334e067
Jan 17 09:32:50 RDX: 00007ffd7e893a70 RSI: ffffb7a9039d7e18 RDI: ffff94ae43581c80
Jan 17 09:32:50 PMD 11299d067 PTE 8000000148d73067
Jan 17 09:32:50 RBP: ffffb7a9039d7d78 R08: ffffb7a9039d7d90 R09: ffffb7a9039d7d8c
Jan 17 09:32:50
Jan 17 09:32:50 R10: 0000000000000002 R11: ffffb7a9039d7e18 R12: ffff94ae43581c80
Jan 17 09:32:50 Oops: 0001 [#2] SMP
Jan 17 09:32:50 R13: 0000000000000000 R14: 0000000000000000 R15: ffffb7a9039d7d44
Jan 17 09:32:50 CPU: 4 PID: 1807 Comm: nginx Tainted: G      D    O       6.7.0 #1
Jan 17 09:32:50 FS:  00007f957a7b4740(0000) GS:ffff94af77c80000(0000) knlGS:0000000000000000
Jan 17 09:32:50 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
Jan 17 09:32:50 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 17 09:32:50 RIP: 0010:tcp_recvmsg_locked+0x498/0xea0
Jan 17 09:32:50 CR2: 00007ffd7e893a70 CR3: 000000014346f000 CR4: 00000000003506f0
Jan 17 09:32:50 Code: a3 07 00 00 80 fa 02 0f 84 88 07 00 00 84 d2 0f 84 f1 04 00 00 41 8b 8c 24 d8 05 00 00 49 8b 53 20 4c 8d 7c 24 44 89 4c 24 44 <48> 83 3a 00 0f 85 e5 fb ff ff 49 8b 73 30 48 83 fe 01 0f 86 c4 04
Jan 17 09:32:50 Kernel panic - not syncing: Fatal exception
Jan 17 09:32:50 RSP: 0018:ffffb7a9039e7d00 EFLAGS: 00010202
Jan 17 09:32:50 RAX: 0000000000000042 RBX: ffff94ae137cc780 RCX: 000000000a5a62eb
Jan 17 09:32:50 RDX: 00007ffd7e893a70 RSI: ffffb7a9039e7e18 RDI: ffff94ae137cc780
Jan 17 09:32:50 RBP: ffffb7a9039e7d78 R08: ffffb7a9039e7d90 R09: ffffb7a9039e7d8c
Jan 17 09:32:50 R10: 0000000000000002 R11: ffffb7a9039e7e18 R12: ffff94ae137cc780
Jan 17 09:32:50 R13: 0000000000000000 R14: 0000000000000000 R15: ffffb7a9039e7d44
Jan 17 09:32:50 FS:  00007f957a7b4740(0000) GS:ffff94af77d00000(0000) knlGS:0000000000000000
Jan 17 09:32:50 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 17 09:32:50 CR2: 00007ffd7e893a70 CR3: 0000000103369000 CR4: 00000000003506f0
Jan 17 09:32:50 Call Trace:
Jan 17 09:32:50  <TASK>
Jan 17 09:32:50  ? __die+0xe4/0xf0
Jan 17 09:32:50  ? page_fault_oops+0x144/0x3e0
Jan 17 09:32:50  ? unix_stream_read_generic+0x24f/0xb20
Jan 17 09:32:50  ? exc_page_fault+0x5d/0xa0
Jan 17 09:32:50  ? asm_exc_page_fault+0x22/0x30
Jan 17 09:32:50  ? tcp_recvmsg_locked+0x498/0xea0
Jan 17 09:32:50  ? __schedule+0x36c/0x960
Jan 17 09:32:50  tcp_recvmsg+0x5c/0x1e0
Jan 17 09:32:50  ? schedule_hrtimeout_range_clock+0x28b/0x310
Jan 17 09:32:50  ? vmxnet3_tq_tx_complete.isra.0+0x2b0/0x2b0 [vmxnet3]
Jan 17 09:32:50  inet_recvmsg+0x2a/0x90
Jan 17 09:32:50  __sys_recvfrom+0x15e/0x200
Jan 17 09:32:50  ? ep_busy_loop_end+0x60/0x60
Jan 17 09:32:50  ? ktime_get_ts64+0x44/0xe0
Jan 17 09:32:50  __x64_sys_recvfrom+0x1b/0x20
Jan 17 09:32:50  do_syscall_64+0x2c/0xa0
Jan 17 09:32:50  entry_SYSCALL_64_after_hwframe+0x46/0x4e
Jan 17 09:32:50 RIP: 0033:0x7f957a8f62a9
Jan 17 09:32:50 Code: 0c 00 64 c7 02 02 00 00 00 eb bf 66 0f 1f 44 00 00 80 3d a9 e0 0c 00 00 41 89 ca 74 1c 45 31 c9 45 31 c0 b8 2d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 67 c3 66 0f 1f 44 00 00 55 48 83 ec 20 48 89
Jan 17 09:32:50 RSP: 002b:00007ffd7e893a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
Jan 17 09:32:50 RAX: ffffffffffffffda RBX: 00007f9579cb73d0 RCX: 00007f957a8f62a9
Jan 17 09:32:50 RDX: 0000000000000001 RSI: 00007ffd7e893a70 RDI: 000000000000000a
Jan 17 09:32:50 RBP: 0000000001b29250 R08: 0000000000000000 R09: 0000000000000000
Jan 17 09:32:50 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
Jan 17 09:32:50 R13: 0000000001a871a0 R14: 00007ffd7e893a70 R15: 0000000000000000
Jan 17 09:32:50  </TASK>
Jan 17 09:32:50 Modules linked in: pppoe pppox ppp_generic slhc nf_conntrack_sip nf_conntrack_ftp nf_conntrack_pptp nft_ct nft_nat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables netconsole virtio_net net_failover failover virtio_pci virtio_pci_legacy_dev virtio_pci_modern_dev virtio virtio_ring vmxnet3 aesni_intel crypto_simd cryptd
Jan 17 09:32:50 CR2: 00007ffd7e893a70
Jan 17 09:32:50 ---[ end trace 0000000000000000 ]---
Jan 17 09:32:50 RIP: 0010:tcp_recvmsg_locked+0x498/0xea0
Jan 17 09:32:50 Code: a3 07 00 00 80 fa 02 0f 84 88 07 00 00 84 d2 0f 84 f1 04 00 00 41 8b 8c 24 d8 05 00 00 49 8b 53 20 4c 8d 7c 24 44 89 4c 24 44 <48> 83 3a 00 0f 85 e5 fb ff ff 49 8b 73 30 48 83 fe 01 0f 86 c4 04
Jan 17 09:32:50 RSP: 0018:ffffb7a9039d7d00 EFLAGS: 00010202
Jan 17 09:32:50 RAX: 0000000000000042 RBX: ffff94ae43581c80 RCX: 00000000662a8e9e
Jan 17 09:32:50 RDX: 00007ffd7e893a70 RSI: ffffb7a9039d7e18 RDI: ffff94ae43581c80
Jan 17 09:32:50 RBP: ffffb7a9039d7d78 R08: ffffb7a9039d7d90 R09: ffffb7a9039d7d8c
Jan 17 09:32:50 R10: 0000000000000002 R11: ffffb7a9039d7e18 R12: ffff94ae43581c80
Jan 17 09:32:50 R13: 0000000000000000 R14: 0000000000000000 R15: ffffb7a9039d7d44
Jan 17 09:32:50 FS:  00007f957a7b4740(0000) GS:ffff94af77d00000(0000) knlGS:0000000000000000
Jan 17 09:32:50 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 17 09:32:50 CR2: 00007ffd7e893a70 CR3: 0000000103369000 CR4: 00000000003506f0
Jan 17 09:32:50 Shutting down cpus with NMI
Jan 17 09:32:50 Kernel Offset: 0x25000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Jan 17 09:32:50 Rebooting in 10 seconds..

> On 17 Jan 2024, at 18:33, Jon Maloy <jmaloy@...hat.com> wrote:
> 
> 
> 
> On 2024-01-15 23:59, Martin Zaharinov wrote:
>> Hi Jon,
>> 
>> yes same here in our test lab where have one test user all is fine .
>> 
>> But when install kernel on production server with 500 users (ppp) and 400-500mbit/s traffic machine crash with this bug log.
>> Its run as isp router firewall + shapers …
> Just to get it straight, does it crash when you are running your test program on top of that heavily loaded machine, or does it just happen randomly when the patch is present?
> 
> ////jon
> 
> 
> 
> 
>> 
>> m.
>> 
>>> On 16 Jan 2024, at 0:41, Jon Maloy <jmaloy@...hat.com> wrote:
>>> 
>>> 
>>> 
>>> On 2024-01-15 16:51, Martin Zaharinov wrote:
>>>> Hi Jon
>>>> 
>>>> After apply the patch on kernel 6.7.0 system hang with this bug report :
>>> Hmm,
>>> I have been running this for weeks without any problems, on x86_64 with current net and net-next.
>>> There must be some difference between our kernels.
>>> Which configuration are you using?
>>> It would also be interesting to see your test program.
>>> 
>>> Regards
>>> ///jon
>>> 
>>> 
>>>> Jan 15 22:27:39 6.7.0,1,863,194879739,-,caller=T3523;BUG: unable to handle page fault for address: 00007fff333174e0
>>>> Jan 15 22:27:39 6.7.0,1,864,194879876,-,caller=T3523;#PF: supervisor read access in kernel mode
>>>> Jan 15 22:27:39 6.7.0,1,865,194879976,-,caller=T3523;#PF: error_code(0x0001) - permissions violation
>>>> Jan 15 22:27:39 6.7.0,6,866,194880075,-,caller=T3523;PGD 107cbd067 P4D 107cbd067 PUD 22055d067 PMD 10a384067 PTE 8000000228b00067
>>>> Jan 15 22:27:39 6.7.0,4,867,194880202,-,caller=T3523;Oops: 0001 [#1] SMP
>>>> Jan 15 22:27:39 6.7.0,4,868,194880297,-,caller=T3523;CPU: 12 PID: 3523 Comm: server-nft Tainted: G           O       6.7.0 #1
>>>> Jan 15 22:27:39 6.7.0,4,869,194880420,-,caller=T3523;Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./EP2C612D8, BIOS P2.30 04/30/2018
>>>> Jan 15 22:27:39 6.7.0,4,870,194880547,-,caller=T3523;RIP: 0010:tcp_recvmsg_locked+0x498/0xea0
>>>> Jan 15 22:27:39 6.7.0,4,871,194880709,-,caller=T3523;Code: a3 07 00 00 80 fa 02 0f 84 88 07 00 00 84 d2 0f 84 f1 04 00 00 41 8b 8c 24 d8 05 00 00 49 8b 53 20 4c 8d 7c 24 44 89 4c 24 44 <48> 83 3a 00 0f 85 e5 fb ff ff 49 8b 73 30 48 83 fe 01 0f 86 c4 04
>>>> Jan 15 22:27:39 6.7.0,4,872,194880876,-,caller=T3523;RSP: 0018:ffffa47b01307d00 EFLAGS: 00010202
>>>> Jan 15 22:27:39 6.7.0,4,873,194880975,-,caller=T3523;RAX: 0000000000000002 RBX: ffff8cf8c3209800 RCX: 00000000a87ac03c
>>>> Jan 15 22:27:39 6.7.0,4,874,194881096,-,caller=T3523;RDX: 00007fff333174e0 RSI: ffffa47b01307e18 RDI: ffff8cf8c3209800
>>>> Jan 15 22:27:39 6.7.0,4,875,194881217,-,caller=T3523;RBP: ffffa47b01307d78 R08: ffffa47b01307d90 R09: ffffa47b01307d8c
>>>> Jan 15 22:27:39 6.7.0,4,876,194881338,-,caller=T3523;R10: 0000000000000002 R11: ffffa47b01307e18 R12: ffff8cf8c3209800
>>>> Jan 15 22:27:39 6.7.0,4,877,194881458,-,caller=T3523;R13: 0000000000000000 R14: 0000000000000000 R15: ffffa47b01307d44
>>>> Jan 15 22:27:39 6.7.0,4,878,194881579,-,caller=T3523;FS:  00007f4941b0ad80(0000) GS:ffff8d001f900000(0000) knlGS:0000000000000000
>>>> Jan 15 22:27:39 6.7.0,4,879,194881703,-,caller=T3523;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>>> Jan 15 22:27:39 6.7.0,4,880,194881802,-,caller=T3523;CR2: 00007fff333174e0 CR3: 000000010df04002 CR4: 00000000003706f0
>>>> Jan 15 22:27:39 6.7.0,4,881,194881922,-,caller=T3523;DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>>> Jan 15 22:27:39 6.7.0,4,882,194882043,-,caller=T3523;DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>>>> Jan 15 22:27:39 6.7.0,4,883,194882164,-,caller=T3523;Call Trace:
>>>> Jan 15 22:27:39 6.7.0,4,884,194882257,-,caller=T3523; <TASK>
>>>> Jan 15 22:27:39 6.7.0,4,885,194882347,-,caller=T3523; ? __die+0xe4/0xf0
>>>> Jan 15 22:27:39 6.7.0,4,886,194882442,-,caller=T3523; ? page_fault_oops+0x144/0x3e0
>>>> Jan 15 22:27:39 6.7.0,4,887,194882539,-,caller=T3523; ? zap_pte_range+0x6a4/0xdc0
>>>> Jan 15 22:27:39 6.7.0,4,888,194882638,-,caller=T3523; ? exc_page_fault+0x5d/0xa0
>>>> Jan 15 22:27:39 6.7.0,4,889,194882736,-,caller=T3523; ? asm_exc_page_fault+0x22/0x30
>>>> Jan 15 22:27:39 6.7.0,4,890,194882834,-,caller=T3523; ? tcp_recvmsg_locked+0x498/0xea0
>>>> Jan 15 22:27:39 6.7.0,4,891,194882931,-,caller=T3523; ? __call_rcu_common.constprop.0+0xbc/0x770
>>>> Jan 15 22:27:39 6.7.0,4,892,194883031,-,caller=T3523; ? rcu_nocb_flush_bypass.part.0+0xec/0x120
>>>> Jan 15 22:27:39 6.7.0,4,893,194883133,-,caller=T3523; tcp_recvmsg+0x5c/0x1e0
>>>> Jan 15 22:27:39 6.7.0,4,894,194883228,-,caller=T3523; inet_recvmsg+0x2a/0x90
>>>> Jan 15 22:27:39 6.7.0,4,895,194883325,-,caller=T3523; __sys_recvfrom+0x15e/0x200
>>>> Jan 15 22:27:39 6.7.0,4,896,194883423,-,caller=T3523; ? wait_task_zombie+0xee/0x410
>>>> Jan 15 22:27:39 6.7.0,4,897,194883539,-,caller=T3523; ? remove_wait_queue+0x1b/0x60
>>>> Jan 15 22:27:39 6.7.0,4,898,194883635,-,caller=T3523; ? do_wait+0x93/0xa0
>>>> Jan 15 22:27:39 6.7.0,4,899,194883729,-,caller=T3523; ? __x64_sys_poll+0xa7/0x170
>>>> Jan 15 22:27:39 6.7.0,4,900,194883825,-,caller=T3523; __x64_sys_recvfrom+0x1b/0x20
>>>> Jan 15 22:27:39 6.7.0,4,901,194883921,-,caller=T3523; do_syscall_64+0x2c/0xa0
>>>> Jan 15 22:27:39 6.7.0,4,902,194884018,-,caller=T3523; entry_SYSCALL_64_after_hwframe+0x46/0x4e
>>>> Jan 15 22:27:39 6.7.0,4,903,194884116,-,caller=T3523;RIP: 0033:0x7f4941fe92a9
>>>> Jan 15 22:27:39 6.7.0,4,904,194884210,-,caller=T3523;Code: 0c 00 64 c7 02 02 00 00 00 eb bf 66 0f 1f 44 00 00 80 3d a9 e0 0c 00 00 41 89 ca 74 1c 45 31 c9 45 31 c0 b8 2d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 67 c3 66 0f 1f 44 00 00 55 48 83 ec 20 48 89
>>>> Jan 15 22:27:39 6.7.0,4,905,194884377,-,caller=T3523;RSP: 002b:00007fff33317468 EFLAGS: 00000246 ORIG_RAX: 000000000000002d
>>>> Jan 15 22:27:39 6.7.0,4,906,194884499,-,caller=T3523;RAX: ffffffffffffffda RBX: 00007fff333174e0 RCX: 00007f4941fe92a9
>>>> Jan 15 22:27:39 6.7.0,4,907,194884620,-,caller=T3523;RDX: 0000000000000001 RSI: 00007fff333174e0 RDI: 0000000000000005
>>>> Jan 15 22:27:39 6.7.0,4,908,194884740,-,caller=T3523;RBP: 00007fff33317550 R08: 0000000000000000 R09: 0000000000000000
>>>> Jan 15 22:27:39 6.7.0,4,909,194884860,-,caller=T3523;R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
>>>> Jan 15 22:27:39 6.7.0,4,910,194884980,-,caller=T3523;R13: 0000000000000000 R14: 0000000000000000 R15: 00007f49418850a0
>>>> Jan 15 22:27:39 6.7.0,4,911,194885101,-,caller=T3523; </TASK>
>>>> Jan 15 22:27:39 6.7.0,4,912,194885191,-,caller=T3523;Modules linked in: nft_limit pppoe pppox ppp_generic slhc nft_ct nft_nat nft_chain_nat nf_tables netconsole coretemp bonding igb i2c_algo_bit i40e ixgbe mdio nf_nat_sip nf_conntrack_sip nf_nat_pptp nf_conntrack_pptp nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipmi_si ipmi_devintf ipmi_msghandler rtc_cmos aesni_intel crypto_simd cryptd
>>>> Jan 15 22:27:39 6.7.0,4,913,194885507,-,caller=T3523;CR2: 00007fff333174e0
>>>> Jan 15 22:27:39 6.7.0,4,914,194885602,-,caller=T3523;---[ end trace 0000000000000000 ]---
>>>> Jan 15 22:27:39 6.7.0,4,915,194885698,-,caller=T3523;RIP: 0010:tcp_recvmsg_locked+0x498/0xea0
>>>> Jan 15 22:27:39 6.7.0,4,916,194885797,-,caller=T3523;Code: a3 07 00 00 80 fa 02 0f 84 88 07 00 00 84 d2 0f 84 f1 04 00 00 41 8b 8c 24 d8 05 00 00 49 8b 53 20 4c 8d 7c 24 44 89 4c 24 44 <48> 83 3a 00 0f 85 e5 fb ff ff 49 8b 73 30 48 83 fe 01 0f 86 c4 04
>>>> Jan 15 22:27:39 6.7.0,4,917,194887079,-,caller=T3523;RSP: 0018:ffffa47b01307d00 EFLAGS: 00010202
>>>> Jan 15 22:27:39 6.7.0,4,918,194887177,-,caller=T3523;RAX: 0000000000000002 RBX: ffff8cf8c3209800 RCX: 00000000a87ac03c
>>>> Jan 15 22:27:39 6.7.0,4,919,194887298,-,caller=T3523;RDX: 00007fff333174e0 RSI: ffffa47b01307e18 RDI: ffff8cf8c3209800
>>>> Jan 15 22:27:39 6.7.0,4,920,194887418,-,caller=T3523;RBP: ffffa47b01307d78 R08: ffffa47b01307d90 R09: ffffa47b01307d8c
>>>> Jan 15 22:27:39 6.7.0,4,921,194887538,-,caller=T3523;R10: 0000000000000002 R11: ffffa47b01307e18 R12: ffff8cf8c3209800
>>>> Jan 15 22:27:39 6.7.0,4,922,194887658,-,caller=T3523;R13: 0000000000000000 R14: 0000000000000000 R15: ffffa47b01307d44
>>>> Jan 15 22:27:39 6.7.0,4,923,194887779,-,caller=T3523;FS:  00007f4941b0ad80(0000) GS:ffff8d001f900000(0000) knlGS:0000000000000000
>>>> Jan 15 22:27:39 6.7.0,4,924,194887901,-,caller=T3523;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>>> Jan 15 22:27:39 6.7.0,4,925,194888000,-,caller=T3523;CR2: 00007fff333174e0 CR3: 000000010df04002 CR4: 00000000003706f0
>>>> Jan 15 22:27:39 6.7.0,4,926,194888120,-,caller=T3523;DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>>>> Jan 15 22:27:39 6.7.0,4,927,194888240,-,caller=T3523;DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
>>>> Jan 15 22:27:39 6.7.0,0,928,194888360,-,caller=T3523;Kernel panic - not syncing: Fatal exception
>>>> Jan 15 22:27:40 6.7.0,0,929,195391096,-,caller=T3523;Kernel Offset: 0x1f000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
>>>> Jan 15 22:27:40 6.7.0,0,930,195391224,-,caller=T3523;Rebooting in 10 seconds..
>>>> 
>>>> 
>>>> 
>>>> m.
>>>> 
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