Date: Tue, 21 Mar 2017 17:31:58 +0100 From: Kurt Jaeger <lists@opsec.eu> To: Hans Petter Selasky <hps@selasky.org> Cc: freebsd-current@freebsd.org Subject: Re: sysctl -a hangs ? Message-ID: <20170321163158.GK64587@home.opsec.eu> In-Reply-To: <bf177a6d-9733-bdb2-81f3-454aac60766d@selasky.org> References: <20170321160407.GJ64587@home.opsec.eu> <20170321161438.GH80268@strugglingcoder.info> <bf177a6d-9733-bdb2-81f3-454aac60766d@selasky.org>
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Hi! > >> I have a freshly installed/updated FreeBSD 11.0p8 on a supermicro > >> X11SSZ-TLN4F board, and > >> > >> pkg install intel-ixl-kmod > >> > >> and now: > >> > >> sysctl -a > >> > >> hangs. Any quick ideas how to debug this ? > > > > If it's just not responding to anything, you can try to panic the box, > > got to db> and see if you can find sleepchain/lockchain? > > You can also take a dump and try to look at same with kgdb scripts. > > You'd need kernel with WITNESS. > > Hi, > > procstat -ak > > Will tell you where it is stuck. Here we go: 1489 100739 sysctl - __mtx_lock_sleep sleepq_catch_signals sleepq_wait_sig _sleep AcpiOsAcquireMutex AcpiUtAcquireMutex AcpiExEnterInterpreter AcpiNsEvaluate AcpiUtEvaluateObject AcpiUtExecute_HID AcpiGetObjectInfo acpi_child_pnpinfo_str_method device_sysctl_handler sysctl_root_handler_locked sysctl_root userland_sysctl sys___sysctl amd64_syscall -- pi@opsec.eu +49 171 3101372 3 years to go !
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