Date: Sun, 5 Apr 2015 12:18:41 -0700 From: David Wolfskill <david@catwhisker.org> To: Konstantin Belousov <kostikbel@gmail.com>, Gleb Smirnoff <glebius@FreeBSD.org>, current@freebsd.org, alc@FreeBSD.org Subject: Re: panic: Lock vm object not exclusively locked @ /usr/src/sys/vm/vm_page.c:2637 Message-ID: <20150405191841.GE1197@albert.catwhisker.org> In-Reply-To: <20150405174703.GD1197@albert.catwhisker.org> References: <20150405133758.GA40261@albert.catwhisker.org> <20150405154721.GO64665@FreeBSD.org> <20150405173723.GR2379@kib.kiev.ua> <20150405174703.GD1197@albert.catwhisker.org>
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--J4XPiPrVK1ev6Sgr Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Apr 05, 2015 at 10:47:03AM -0700, David Wolfskill wrote: > ... > > Either this, or vm_page_advise() could be changed to do nothing in the > > case of MADV_DONTNEED operation and a need to call vm_page_dirty(), if > > the object is only read-locked. >=20 > I have since managed to build & (successfully) boot: >=20 > s3:FreeBSD g1-254.catwhisker.org 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r2= 81106M/281106:1100067: Sun Apr 5 09:57:39 PDT 2015 root@g1-254.catwhis= ker.org:/common/S3/obj/usr/src/sys/CANARY amd64 >=20 > So I'm about to try re-building the i386 head (and be sure that > it's quite "clean" in the process). (I had seen the panic for i386 > twice out of two attempts, so I'm reasonably certain it wasn't a > fluke. But it could be something "weird" in my head/i386 environment, > as that is the only one where I've had a problem with today's builds > & smoke-tests. I'm using both i386 & amd64, and both stable/10 and > head -- 4 combinations; one for each of 4 slices on the same > hardware.) > .... So... as advertisd, I cleaned things up (rather explicitly), rebuilt world & kernel, installed kernel & world... and the panic recurred. I have a fresh(er) crash dump; I've placed a copy of core.txt.4 in <http://www.catwhisker.org/~david/FreeBSD/head/>. Peace, david --=20 David H. Wolfskill david@catwhisker.org Those who murder in the name of God or prophet are blasphemous cowards. See http://www.catwhisker.org/~david/publickey.gpg for my public key. --J4XPiPrVK1ev6Sgr Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJVIYqRXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQ4RThEMDY4QTIxMjc1MDZFRDIzODYzRTc4 QTY3RjlDOERFRjQxOTNCAAoJEIpn+cje9Bk7ELgP/iKlVAImNYo5JkTsYe/2tCIj /lN39oN4wXxuIwaB486LG/M1sIUeHjY5PT1jw+UtcHwMDF+SAepLQPcALwt2B9CJ eyHIdzqEx98RvPYnwp4m6IXhwFDTiDe4clE+dSLwZKwnH9GZ/6rzMlvci6jeydYY Txs3DcBiGNaoi5xQt5LbeD4RIZkFcZ2jKBbU6okLQrTn2e0VlGPMkkB3K28B4/xK BYSs8IUp14A1gZRp4XV9tpGEQMdq6qBGvYHLSokkGU5BJPHpKR3N3tUI3Y6nwfJD ooRumsV15HcmFH1J6MU+IQnSwvheLqkGrelqf8xQLWv//b7WKxh0UxLH0ppSlM/F BLKsZ2KoNLcesxveJHaLR7KArJlNY0/SPsM0Tnv6Qoc/vRVFWy3uXLqWMKkyGY2c K3SkzrGOwgNEsq/Kd/L3ojYniflNEgxhvfwfPRnFR76/XBSumbdtT9C+MGE3JL0e +aHY2Elzi69plEoV3jlrYKYQTb6bKyoDpJVB8twR+JLTd2VBeOfxjxjhCZlUS/WH byol5RGtafvLGjC8aURoU6ZHlkVhdYjgSM4ovjr47hXMF0NNrowx1gh8A1y8yCR8 SI/dkoStrS2XIocGtw2kPzlvxXMwCgqw1eF561BnfVx8+WADD5afzqhVjgefwvhW pNbrw+ZLlEfUS8BfXW9e =nGLK -----END PGP SIGNATURE----- --J4XPiPrVK1ev6Sgr--
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