Date: Tue, 11 Mar 2014 00:48:44 -0700 From: Xin Li <delphij@delphij.net> To: FreeBSD Current <freebsd-current@FreeBSD.org> Subject: processes stuck in vmo_de state Message-ID: <531EBFDC.3010608@delphij.net>
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hi, I have recently upgraded my home storage box (Avoton based board running FreeBSD/amd64) from 10.0-RELEASE (patched with some ZFS changes) to -CURRENT. It looks like the system would easily hang when I start 'buildworld', when this happens, I saw sh process stuck in 'vmo_de' state and procstat -kk would give me EBUSY: $ procstat -kk 1752 PID TID COMM TDNAME KSTACK procstat: sysctl: kern.proc.kstack: 1752: Device busy To rule out issue introduced by my local changes, I reverted them all and used an unpatched 'VT' kernel (with WITNESS, etc. enabled). In loader.conf I have: zfs_load="YES" aesni_load="YES" hint.apic.0.clock=0 hint.atrtc.0.clock=0 In rc.conf I have: powerd_enable="YES" economy_cx_lowest="LOW" performance_cx_lowest="LOW" The zpool I'm using is configured to use SHA256 as checksum. One zpool is created over 4 GELI provider and decrypted on boot but I don't think that matters. Any hints? The system have flaky IPMI access so I can't always debug from remote but would happy to provide more data if helpful. Cheers, -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJTHr/cAAoJEJW2GBstM+ns6akP/1nsP8EH1zQ3v04fP4ZrmHp2 /7RgU3LH5/ydRuoiVvMnnJsK0XjZxi/Uu8kad1P/xi4FpqDmMTsQ5/8u/HKoGA9Z Jik+LS79R7AApU4v64pWpPbUo7a9cs+JWH3gNWPCfqDHpg6FoP6B7sxrGdX4EY+n UftSstk/UVSeoGaoC1sEgzsR3/ORAN+pQ7YbTlPJ7/RK8OIcrq8GTXTJpXaT0EoP w0PQZtvPy5lWkB+KwAjrfF3QEr/G6pubLKbeq46eSwY0eDruL79zd7zozHcR5F9e 03tu17VM1QW41Y8zQT16cX8YEWI//5rk1wOQLZXT++jWyty9T9Ekt+d+H0mCPtjm nIwLlyVQrfXPZnvFi3oZcOxgSdT3x3O9cUDQVebC4yIN4NPUWdyHmn6C57xwjW/h efPoujEAkjPfD3iykWbLBXHGKyINi3KxU8ht1vndO4LdYKj+Dvtnz/IKs6VxnyT0 ld19nMkXZOjZc8Iftkx9/aLdlA1/BtkwIndod1J18kmMf7fWW9k7Mt8DyaGD8XUA 5QRIz3aeomF/+awTvVWTa07Rib5d4s6qv63ecGPEhNLjR6QA5t19b0W/8Ip2eTQD B39ROUtBbSE2wzcpYwNdkHQEUiQSOzQithqRPvzXJZrUdEk+I3/4D1870r5BFCIJ wL8/P0dmN1Y02vYFdJwy =xBqp -----END PGP SIGNATURE-----
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