Date: Wed, 20 Dec 2017 14:13:46 +0300 From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: David Wolfskill <david@catwhisker.org>, ipfw@freebsd.org Subject: Re: ipfw pipe show yields "REDZONE: Buffer overflow detected..." Message-ID: <20764a51-9171-cd2e-9f6d-31a43eb8d7f3@yandex.ru> In-Reply-To: <20171219131732.GR1226@albert.catwhisker.org> References: <20171219131732.GR1226@albert.catwhisker.org>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --JAgf5DMiFBQRVsikx3cuwkfKX2a5EM4Cr Content-Type: multipart/mixed; boundary="lml5TrTCUilmLav4CaqoDG9SwplIVMorh"; protected-headers="v1" From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: David Wolfskill <david@catwhisker.org>, ipfw@freebsd.org Message-ID: <20764a51-9171-cd2e-9f6d-31a43eb8d7f3@yandex.ru> Subject: Re: ipfw pipe show yields "REDZONE: Buffer overflow detected..." References: <20171219131732.GR1226@albert.catwhisker.org> In-Reply-To: <20171219131732.GR1226@albert.catwhisker.org> --lml5TrTCUilmLav4CaqoDG9SwplIVMorh Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 19.12.2017 16:17, David Wolfskill wrote: > Similarly; "ipfw sched show" yields: > Dec 19 13:08:54 g1-252 kernel: REDZONE: Buffer overflow detected. 16 by= tes corrupted after 0xfffff80232e73748 (328 bytes allocated). > Dec 19 13:08:54 g1-252 kernel: Allocation backtrace: > Dec 19 13:08:54 g1-252 kernel: #0 0xffffffff80d49299 at redzone_setup+0= xe9 > Dec 19 13:08:54 g1-252 kernel: #1 0xffffffff80a1175d at malloc+0x22d > Dec 19 13:08:54 g1-252 kernel: #2 0xffffffff80c95e07 at dummynet_get+0x= 337 > Dec 19 13:08:54 g1-252 kernel: #3 0xffffffff80ba4102 at rip_ctloutput+0= x102 > Dec 19 13:08:54 g1-252 kernel: #4 0xffffffff80ac2d9d at sogetopt+0xcd > Dec 19 13:08:54 g1-252 kernel: #5 0xffffffff80ac756b at kern_getsockopt= +0xdb > Dec 19 13:08:54 g1-252 kernel: #6 0xffffffff80ac7462 at sys_getsockopt+= 0x52 > Dec 19 13:08:54 g1-252 kernel: #7 0xffffffff80e3a66a at amd64_syscall+0= xa6a > Dec 19 13:08:54 g1-252 kernel: #8 0xffffffff80e1cedb at Xfast_syscall+0= xfb > Dec 19 13:08:54 g1-252 kernel: Free backtrace: > Dec 19 13:08:54 g1-252 kernel: #0 0xffffffff80d49604 at redzone_check+0= x304 > Dec 19 13:08:54 g1-252 kernel: #1 0xffffffff80a117b6 at free+0x46 > Dec 19 13:08:54 g1-252 kernel: #2 0xffffffff80c9623d at dummynet_get+0x= 76d > Dec 19 13:08:54 g1-252 kernel: #3 0xffffffff80ba4102 at rip_ctloutput+0= x102 > Dec 19 13:08:54 g1-252 kernel: #4 0xffffffff80ac2d9d at sogetopt+0xcd > Dec 19 13:08:54 g1-252 kernel: #5 0xffffffff80ac756b at kern_getsockopt= +0xdb > Dec 19 13:08:54 g1-252 kernel: #6 0xffffffff80ac7462 at sys_getsockopt+= 0x52 > Dec 19 13:08:54 g1-252 kernel: #7 0xffffffff80e3a66a at amd64_syscall+0= xa6a > Dec 19 13:08:54 g1-252 kernel: #8 0xffffffff80e1cedb at Xfast_syscall+0= xfb >=20 >=20 > Yesterday was the first full day of running the laptop with FQ-CoDel > implemented, and I noticed that in the evening, things (such as > echoing charcaters in an xterm) would "pause" for a second or two, > fairly randomly. I can't say that the above were associated with the > pauses, but they are associated with the commands -- this is trivially > reproducible (for me, anyway). It would be nice if you created PR where you described steps to reproduce this. Your kernel/modules config, commands you used to get this result. --=20 WBR, Andrey V. Elsukov --lml5TrTCUilmLav4CaqoDG9SwplIVMorh-- --JAgf5DMiFBQRVsikx3cuwkfKX2a5EM4Cr Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEzBAEBCAAdFiEE5lkeG0HaFRbwybwAAcXqBBDIoXoFAlo6ReoACgkQAcXqBBDI oXqHAgf/djYBtVJUtM0wEIDSbbS7A2vPTPQfh8xuVZbZGZJeqvJD3hBaSAcOm1L0 REkcYKKKmT41a3wrfsxWFZ/MhLmCkKPPWZOf1zxhlvpQO31i0gZo5rX+5X/tT1hP 3IbYhBSYkyUZiKDvPcPx4paMxL5kKSa9B1qqDxPT5Vfrcjo5mwtDEX6a3TpFhOA0 arLo7cjFOOBw2FLQ9Jysv6ZMvk8KAwFiN90Y4ifda5qWQARuyJscPkypR0mvxUt5 qmSVjYEVl//GBb8bnHQXkwMlkVHzd6fXAZlYS6OTmzHL/mrBRDjZPeTGwC+HrIsH JuBroAq8aUMl7xtLlGMl9IoG3M1o7w== =RuKf -----END PGP SIGNATURE----- --JAgf5DMiFBQRVsikx3cuwkfKX2a5EM4Cr--
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