From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f44.google.com (mail-wr1-f44.google.com [209.85.221.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D45D225A1 for ; Wed, 17 Jan 2024 17:11:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705511514; cv=none; b=ekk7782GYU8p+pdH9MgkQd6uwXpMd2J6nVaMVdIDixExMAPaQTtzdB2Vc49dw26RKTksoWLcj90dz9Q06MWVVSkZG/+i50OTjv6Dgd5jprGUq94iMAFFsrKyZTX0Xd8CDFTcyT+2N9Xu7nnggFtzz+hCvSMLWoS0mDfwS9JwrHk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705511514; c=relaxed/simple; bh=SuItVh+vHVjQottoyIEq0buSuq/UjXlSc47i+hPX0PY=; h=Received:DKIM-Signature:X-Google-DKIM-Signature: X-Gm-Message-State:X-Google-Smtp-Source:X-Received:Received: Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Cc: Content-Transfer-Encoding:Message-Id:References:To:X-Mailer; b=aJ0LQ72lHNQ/013/NT3CNzS9eVGLGBd/BsbknFWOebMoOkuNJgK4EpEXTQDsu+DCCaU6vzpi7Y3uh6djGtZ+E8kFBPgaG3QviWpCKRR6ig7QR0jvCwohd6QSArsicaR40fxXw2K1oSnuNcrDM0Rcap99qPyDLcz29Fo1uS22axw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=S3rGZTlN; arc=none smtp.client-ip=209.85.221.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="S3rGZTlN" Received: by mail-wr1-f44.google.com with SMTP id ffacd0b85a97d-336746c7b6dso9646708f8f.0 for ; Wed, 17 Jan 2024 09:11:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1705511510; x=1706116310; darn=vger.kernel.org; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=Lla7aY0ywuKo9baqrT2akYyAYp9CX5vFrWadb8GUa2w=; b=S3rGZTlNOzklu3MvJx/fSjhUgDyVbeBQM1OGRKFCzTYWY1xu1eirnm8UQhtx5C7buP 2+EuMi5YFHRpYG811bp61CM8qY+kbt7u/z7XKUtMPr8RYWwIFxfdW+SGZcsRhmDdL7Oa B58p9wsYqtqgOx4/ZEYljqykQEzsIv8ThJDU992fjhEILUVmSD4Yx8v+8SiB0kZE20Mx gMydyvbH6IDlTx4Akw3k1CYKFUfKE+PqJ8USRbHfB8HTloWrWB1dAXGKRAMJANcU+gBR u5v/N86HcxJLGZDnMQYiS1WLCR1FPiQ8GFO8f3w26je99wf2pUqBGFOvMyTQhYKZaIyq FS3g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1705511510; x=1706116310; h=to:references:message-id:content-transfer-encoding:cc:date :in-reply-to:from:subject:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Lla7aY0ywuKo9baqrT2akYyAYp9CX5vFrWadb8GUa2w=; b=hgpkB3ePg+GPFn09nD/AqT2KOdNkRvfXHUXw3MU+NovE1vxzfxd5IW4ZErdf7BgBmr 1XXkYgS7xnf4LHL1GLMnhWJYbMGPdoOSPe0+6j28Xnx/R2O7R7ilpm1ZFou92J9k1Stk 8E51jZU+Bm+EaW4MBfSpDsy323o9NaX6vi2/VRntTBmGJIzPAK0rytGDuKprzf71CimU fvBGzhp4lkx/48pDg0tsW40PI/pzoT7dqv0AYaxP8f4M7C0+Cbp5pua0CtMHgILXwocG LbFoBnHD6NgqocqvLFBbHS8j10Geh+My6w4Q8sphg+H1w7xsBSP0FjVhKZypKdvO06Jg pn+g== X-Gm-Message-State: AOJu0YysUwA3ycdemC0J3ho7whyqPnNp+qm7jVxxpXMYhsW0RXMzslMz dGc+ozbgxbaoUeitmnuGlWGMwm/NfNPBCw== X-Google-Smtp-Source: AGHT+IEdl8ihn5xn8GU5RxHcX+v/MaTOdPb+W1Xjkk52OlBFeVC9tFni8l8DmzSM5pOtOXAK8I0jYQ== X-Received: by 2002:a5d:618d:0:b0:337:4a1d:8944 with SMTP id j13-20020a5d618d000000b003374a1d8944mr5067503wru.70.1705511509960; Wed, 17 Jan 2024 09:11:49 -0800 (PST) Received: from smtpclient.apple ([178.254.237.20]) by smtp.gmail.com with ESMTPSA id s18-20020a5d4ed2000000b00337bea8856dsm2095675wrv.8.2024.01.17.09.11.49 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 17 Jan 2024 09:11:49 -0800 (PST) Content-Type: text/plain; charset=utf-8 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3774.300.61.1.2\)) Subject: Re: [RFC,net-next] tcp: add support for read with offset when using MSG_PEEK From: Martin Zaharinov In-Reply-To: <9522107c-90bd-e803-4397-16a357613a22@redhat.com> Date: Wed, 17 Jan 2024 19:11:38 +0200 Cc: netdev Content-Transfer-Encoding: quoted-printable Message-Id: <964350FD-0978-4BFF-93C2-DDBC701FDADA@gmail.com> References: <9522107c-90bd-e803-4397-16a357613a22@redhat.com> To: Jon Maloy X-Mailer: Apple Mail (2.3774.300.61.1.2) 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:=20 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 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 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 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 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 wrote: >=20 >=20 >=20 > On 2024-01-15 23:59, Martin Zaharinov wrote: >> Hi Jon, >>=20 >> yes same here in our test lab where have one test user all is fine . >>=20 >> 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 =E2=80=A6 > 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? >=20 > ////jon >=20 >=20 >=20 >=20 >>=20 >> m. >>=20 >>> On 16 Jan 2024, at 0:41, Jon Maloy wrote: >>>=20 >>>=20 >>>=20 >>> On 2024-01-15 16:51, Martin Zaharinov wrote: >>>> Hi Jon >>>>=20 >>>> 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. >>>=20 >>> Regards >>> ///jon >>>=20 >>>=20 >>>> Jan 15 22:27:39 6.7.0,1,863,194879739,-,caller=3DT3523;BUG: unable = to handle page fault for address: 00007fff333174e0 >>>> Jan 15 22:27:39 6.7.0,1,864,194879876,-,caller=3DT3523;#PF: = supervisor read access in kernel mode >>>> Jan 15 22:27:39 6.7.0,1,865,194879976,-,caller=3DT3523;#PF: = error_code(0x0001) - permissions violation >>>> Jan 15 22:27:39 6.7.0,6,866,194880075,-,caller=3DT3523;PGD = 107cbd067 P4D 107cbd067 PUD 22055d067 PMD 10a384067 PTE 8000000228b00067 >>>> Jan 15 22:27:39 6.7.0,4,867,194880202,-,caller=3DT3523;Oops: 0001 = [#1] SMP >>>> Jan 15 22:27:39 6.7.0,4,868,194880297,-,caller=3DT3523;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=3DT3523;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=3DT3523;RIP: = 0010:tcp_recvmsg_locked+0x498/0xea0 >>>> Jan 15 22:27:39 6.7.0,4,871,194880709,-,caller=3DT3523;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=3DT3523;RSP: = 0018:ffffa47b01307d00 EFLAGS: 00010202 >>>> Jan 15 22:27:39 6.7.0,4,873,194880975,-,caller=3DT3523;RAX: = 0000000000000002 RBX: ffff8cf8c3209800 RCX: 00000000a87ac03c >>>> Jan 15 22:27:39 6.7.0,4,874,194881096,-,caller=3DT3523;RDX: = 00007fff333174e0 RSI: ffffa47b01307e18 RDI: ffff8cf8c3209800 >>>> Jan 15 22:27:39 6.7.0,4,875,194881217,-,caller=3DT3523;RBP: = ffffa47b01307d78 R08: ffffa47b01307d90 R09: ffffa47b01307d8c >>>> Jan 15 22:27:39 6.7.0,4,876,194881338,-,caller=3DT3523;R10: = 0000000000000002 R11: ffffa47b01307e18 R12: ffff8cf8c3209800 >>>> Jan 15 22:27:39 6.7.0,4,877,194881458,-,caller=3DT3523;R13: = 0000000000000000 R14: 0000000000000000 R15: ffffa47b01307d44 >>>> Jan 15 22:27:39 6.7.0,4,878,194881579,-,caller=3DT3523;FS: = 00007f4941b0ad80(0000) GS:ffff8d001f900000(0000) knlGS:0000000000000000 >>>> Jan 15 22:27:39 6.7.0,4,879,194881703,-,caller=3DT3523;CS: 0010 = DS: 0000 ES: 0000 CR0: 0000000080050033 >>>> Jan 15 22:27:39 6.7.0,4,880,194881802,-,caller=3DT3523;CR2: = 00007fff333174e0 CR3: 000000010df04002 CR4: 00000000003706f0 >>>> Jan 15 22:27:39 6.7.0,4,881,194881922,-,caller=3DT3523;DR0: = 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >>>> Jan 15 22:27:39 6.7.0,4,882,194882043,-,caller=3DT3523;DR3: = 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >>>> Jan 15 22:27:39 6.7.0,4,883,194882164,-,caller=3DT3523;Call Trace: >>>> Jan 15 22:27:39 6.7.0,4,884,194882257,-,caller=3DT3523; >>>> Jan 15 22:27:39 6.7.0,4,885,194882347,-,caller=3DT3523; ? = __die+0xe4/0xf0 >>>> Jan 15 22:27:39 6.7.0,4,886,194882442,-,caller=3DT3523; ? = page_fault_oops+0x144/0x3e0 >>>> Jan 15 22:27:39 6.7.0,4,887,194882539,-,caller=3DT3523; ? = zap_pte_range+0x6a4/0xdc0 >>>> Jan 15 22:27:39 6.7.0,4,888,194882638,-,caller=3DT3523; ? = exc_page_fault+0x5d/0xa0 >>>> Jan 15 22:27:39 6.7.0,4,889,194882736,-,caller=3DT3523; ? = asm_exc_page_fault+0x22/0x30 >>>> Jan 15 22:27:39 6.7.0,4,890,194882834,-,caller=3DT3523; ? = tcp_recvmsg_locked+0x498/0xea0 >>>> Jan 15 22:27:39 6.7.0,4,891,194882931,-,caller=3DT3523; ? = __call_rcu_common.constprop.0+0xbc/0x770 >>>> Jan 15 22:27:39 6.7.0,4,892,194883031,-,caller=3DT3523; ? = rcu_nocb_flush_bypass.part.0+0xec/0x120 >>>> Jan 15 22:27:39 6.7.0,4,893,194883133,-,caller=3DT3523; = tcp_recvmsg+0x5c/0x1e0 >>>> Jan 15 22:27:39 6.7.0,4,894,194883228,-,caller=3DT3523; = inet_recvmsg+0x2a/0x90 >>>> Jan 15 22:27:39 6.7.0,4,895,194883325,-,caller=3DT3523; = __sys_recvfrom+0x15e/0x200 >>>> Jan 15 22:27:39 6.7.0,4,896,194883423,-,caller=3DT3523; ? = wait_task_zombie+0xee/0x410 >>>> Jan 15 22:27:39 6.7.0,4,897,194883539,-,caller=3DT3523; ? = remove_wait_queue+0x1b/0x60 >>>> Jan 15 22:27:39 6.7.0,4,898,194883635,-,caller=3DT3523; ? = do_wait+0x93/0xa0 >>>> Jan 15 22:27:39 6.7.0,4,899,194883729,-,caller=3DT3523; ? = __x64_sys_poll+0xa7/0x170 >>>> Jan 15 22:27:39 6.7.0,4,900,194883825,-,caller=3DT3523; = __x64_sys_recvfrom+0x1b/0x20 >>>> Jan 15 22:27:39 6.7.0,4,901,194883921,-,caller=3DT3523; = do_syscall_64+0x2c/0xa0 >>>> Jan 15 22:27:39 6.7.0,4,902,194884018,-,caller=3DT3523; = entry_SYSCALL_64_after_hwframe+0x46/0x4e >>>> Jan 15 22:27:39 6.7.0,4,903,194884116,-,caller=3DT3523;RIP: = 0033:0x7f4941fe92a9 >>>> Jan 15 22:27:39 6.7.0,4,904,194884210,-,caller=3DT3523;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=3DT3523;RSP: = 002b:00007fff33317468 EFLAGS: 00000246 ORIG_RAX: 000000000000002d >>>> Jan 15 22:27:39 6.7.0,4,906,194884499,-,caller=3DT3523;RAX: = ffffffffffffffda RBX: 00007fff333174e0 RCX: 00007f4941fe92a9 >>>> Jan 15 22:27:39 6.7.0,4,907,194884620,-,caller=3DT3523;RDX: = 0000000000000001 RSI: 00007fff333174e0 RDI: 0000000000000005 >>>> Jan 15 22:27:39 6.7.0,4,908,194884740,-,caller=3DT3523;RBP: = 00007fff33317550 R08: 0000000000000000 R09: 0000000000000000 >>>> Jan 15 22:27:39 6.7.0,4,909,194884860,-,caller=3DT3523;R10: = 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 >>>> Jan 15 22:27:39 6.7.0,4,910,194884980,-,caller=3DT3523;R13: = 0000000000000000 R14: 0000000000000000 R15: 00007f49418850a0 >>>> Jan 15 22:27:39 6.7.0,4,911,194885101,-,caller=3DT3523; >>>> Jan 15 22:27:39 6.7.0,4,912,194885191,-,caller=3DT3523;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=3DT3523;CR2: = 00007fff333174e0 >>>> Jan 15 22:27:39 6.7.0,4,914,194885602,-,caller=3DT3523;---[ end = trace 0000000000000000 ]--- >>>> Jan 15 22:27:39 6.7.0,4,915,194885698,-,caller=3DT3523;RIP: = 0010:tcp_recvmsg_locked+0x498/0xea0 >>>> Jan 15 22:27:39 6.7.0,4,916,194885797,-,caller=3DT3523;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=3DT3523;RSP: = 0018:ffffa47b01307d00 EFLAGS: 00010202 >>>> Jan 15 22:27:39 6.7.0,4,918,194887177,-,caller=3DT3523;RAX: = 0000000000000002 RBX: ffff8cf8c3209800 RCX: 00000000a87ac03c >>>> Jan 15 22:27:39 6.7.0,4,919,194887298,-,caller=3DT3523;RDX: = 00007fff333174e0 RSI: ffffa47b01307e18 RDI: ffff8cf8c3209800 >>>> Jan 15 22:27:39 6.7.0,4,920,194887418,-,caller=3DT3523;RBP: = ffffa47b01307d78 R08: ffffa47b01307d90 R09: ffffa47b01307d8c >>>> Jan 15 22:27:39 6.7.0,4,921,194887538,-,caller=3DT3523;R10: = 0000000000000002 R11: ffffa47b01307e18 R12: ffff8cf8c3209800 >>>> Jan 15 22:27:39 6.7.0,4,922,194887658,-,caller=3DT3523;R13: = 0000000000000000 R14: 0000000000000000 R15: ffffa47b01307d44 >>>> Jan 15 22:27:39 6.7.0,4,923,194887779,-,caller=3DT3523;FS: = 00007f4941b0ad80(0000) GS:ffff8d001f900000(0000) knlGS:0000000000000000 >>>> Jan 15 22:27:39 6.7.0,4,924,194887901,-,caller=3DT3523;CS: 0010 = DS: 0000 ES: 0000 CR0: 0000000080050033 >>>> Jan 15 22:27:39 6.7.0,4,925,194888000,-,caller=3DT3523;CR2: = 00007fff333174e0 CR3: 000000010df04002 CR4: 00000000003706f0 >>>> Jan 15 22:27:39 6.7.0,4,926,194888120,-,caller=3DT3523;DR0: = 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 >>>> Jan 15 22:27:39 6.7.0,4,927,194888240,-,caller=3DT3523;DR3: = 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 >>>> Jan 15 22:27:39 6.7.0,0,928,194888360,-,caller=3DT3523;Kernel panic = - not syncing: Fatal exception >>>> Jan 15 22:27:40 6.7.0,0,929,195391096,-,caller=3DT3523;Kernel = Offset: 0x1f000000 from 0xffffffff81000000 (relocation range: = 0xffffffff80000000-0xffffffffbfffffff) >>>> Jan 15 22:27:40 6.7.0,0,930,195391224,-,caller=3DT3523;Rebooting in = 10 seconds.. >>>>=20 >>>>=20 >>>>=20 >>>> m. >>>>=20 >=20