From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomas Charvat Subject: Re: flow cache removed = xfrm doesnt work Date: Fri, 19 Jan 2018 23:48:26 +0100 Message-ID: <1516402106.21539.2.camel@excello.cz> References: <1871ed24-b210-44ad-2a9f-8ff6c9c8fcb5@excello.cz> <20171124193212.GB17459@breakpoint.cc> <20171125.045031.1035207953582211425.davem@davemloft.net> <20171127090215.ovy2ysmv6z4fdlkh@gauss3.secunet.de> <20171127114130.5vxcm2viunoy25ij@gauss3.secunet.de> <0b30b861-225f-bebf-baf6-23958b2a335c@excello.cz> <20171127124956.qe2uwrxv537nwksu@gauss3.secunet.de> <20171130102051.yzqb4jpwc6pm6cnw@gauss3.secunet.de> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-KaV4xFU6/YPD2KGZuSag" Cc: David Miller , fw@strlen.de, netdev@vger.kernel.org To: Steffen Klassert Return-path: Received: from out1.virusfree.cz ([212.24.139.170]:46774 "EHLO out1.virusfree.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932650AbeASWzP (ORCPT ); Fri, 19 Jan 2018 17:55:15 -0500 In-Reply-To: <20171130102051.yzqb4jpwc6pm6cnw@gauss3.secunet.de> Sender: netdev-owner@vger.kernel.org List-ID: --=-KaV4xFU6/YPD2KGZuSag Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable > Ok I have tried 4.14.14 and got following after 1 hour or so. It was > not fatal, system kept going. [ 2833.840452] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [ 2833.840549] IP: xfrm_output_resume+0x20a/0x460 [ 2833.840618] PGD 0 P4D 0=20 [ 2833.840682] Oops: 0000 [#1] SMP NOPTI [ 2833.840752] CPU: 81 PID: 121868 Comm: spamd child Not tainted 4.14.14-gentoo #2 [ 2833.840831] Hardware name: Supermicro AS -1123US-TR4/H11DSU-iN, BIOS 1.0a 09/25/2017 [ 2833.840911] task: ffff891d1d5b8600 task.stack: ffff980cde96c000 [ 2833.840987] RIP: 0010:xfrm_output_resume+0x20a/0x460 [ 2833.841058] RSP: 0018:ffff980cde96fb70 EFLAGS: 00010246 [ 2833.841129] RAX: 0000000000000000 RBX: ffff891b1e0a48e0 RCX: 0000000000000000 [ 2833.841207] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000000 [ 2833.841285] RBP: ffffffffb1f11300 R08: ffff980cde96fa20 R09: ffff891b199ba450 [ 2833.841363] R10: ffff891b1d5b30c4 R11: 0000000000000000 R12: ffff891b1e0f7400 [ 2833.841441] R13: ffff891b1e0f743c R14: 0000000000000020 R15: 000000000001f000 [ 2833.841519] FS: 00007fe90028e700(0000) GS:ffff891b1fc40000(0000) knlGS:0000000000000000 [ 2833.841601] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2833.841673] CR2: 0000000000000018 CR3: 0000800dcc944000 CR4: 00000000001406e0 [ 2833.841908] Call Trace: [ 2833.842141] ? skb_checksum_help+0x83/0x1b0 [ 2833.842382] ? xfrm_output+0x1c9/0x210 [ 2833.842626] xfrm6_output+0x91/0x110 [ 2833.842904] ? xfrm6_local_rxpmtu+0x80/0x80 [ 2833.843200] tcp_transmit_skb+0x541/0x990 [ 2833.843488] tcp_write_xmit+0x1bc/0xf90 [ 2833.843743] ? _copy_from_iter_full+0x93/0x230 [ 2833.843955] __tcp_push_pending_frames+0x28/0x90 [ 2833.844115] tcp_sendmsg_locked+0x65c/0xe40 [ 2833.844351] tcp_sendmsg+0x2e/0x50 [ 2833.844565] sock_sendmsg+0x3e/0x50 [ 2833.844784] sock_write_iter+0x82/0xf0 [ 2833.845011] __vfs_write+0x129/0x190 [ 2833.845233] vfs_write+0xc3/0x1c0 [ 2833.845500] SyS_write+0x5f/0xd0 [ 2833.845709] entry_SYSCALL_64_fastpath+0x19/0x72 [ 2833.845932] RIP: 0033:0x7fe8ff9b9b80 [ 2833.846148] RSP: 002b:00007ffd441632c8 EFLAGS: 00000246 [ 2833.846148] Code: b0 fe ff ff 31 f6 85 d2 0f 8f a6 fe ff ff 0f 1f 00 e9 af fe ff ff 85 f6 89 f0 0f 85 cc fe ff ff 48 8b 7b 58 48 89 f8 48 83 e0 fe <4c> 8b 68 18 4d 85 ed 0f 84 ad 01 00 00 41 8b 85 80 00 00 00 85=20 [ 2833.846987] RIP: xfrm_output_resume+0x20a/0x460 RSP: ffff980cde96fb70 [ 2833.847280] CR2: 0000000000000018 [ 2833.847532] ---[ end trace 504f6c380fc3f734 ]--- --=-KaV4xFU6/YPD2KGZuSag Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEBwBJa1RdHmHEEyO1Z1k3LPZxPHAFAlpidboACgkQZ1k3LPZx PHB2Gw/+MFqJ6GpajZi03t2kKqiVpT8nXl/bsLcgxC8pGVb4qPyoWSvUEI4Sz5WS mxLyRwlms9xm+pG4xvC73mF0dEqRI3aTdcGuIwSu3sq2S+/SooyPGLZZ4hJttec9 eUl0I0RgUSQKhgbedLOxnytOuDL4wl5YB3fICmTzTgrRyTsZaV6MOmMGn73wBtPd eRQ6H8YnbZ9XMopS6rA4KZ6CQO0+lZ3uc/dcI16ktwyq0IgLg+SsbIpDr78YLd/3 jfoAmcozIjZbw2FbhE036S4/anbV/riOk1v9nZHtm9+2mVEPvHJ1tYRWNmHjrirq JmGFIhmhPuy3muQ7NvTvNfc9bfnArY17KcsBu5TRdu+xd7KxLBDYyA0gWXInjVW0 QGQlILNMhqVeOej6xC/iWGwHxKV9xnJF/d0bX8vtmqQsO0QRvKIIWFHT5vPawPla HTJEtcuflZ8KvXCJ78vG6H27tN6IUeOfXT55pxM4Jo8CJRs0SeAuEBix41E1TFrW DjDI+RlVK9KavdP39KQWgZRYldSTljmIowixpDvvE0ms+vmR+Dsb9lL2rWFs0/tk yuZOrdIgBGEswVaGcRk3h9M2itxZVXzMPoZB939+hc72JfXtloRq+ol+Th4dJKxr p6tn/YAEarBXYgwyPin59yTCIBZ+cD4TrOlyCMuDA86soYHS+U0= =EIQ5 -----END PGP SIGNATURE----- --=-KaV4xFU6/YPD2KGZuSag--