Date: Wed, 23 Feb 2005 15:54:05 -0800 From: Kris Kennaway <kris@obsecurity.org> To: stable@FreeBSD.org Cc: jhb@FreeBSD.org Subject: panic: Assertion td->td_sleepqueue != NULL failed at /usr/src/sys/kern/subr_sleepqueue.c:258 Message-ID: <20050223235405.GB19137@xor.obsecurity.org>
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--Bn2rw/3z4jIqBvZU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline I got this on a 12-processor e4500 running RELENG_5: panic: Assertion td->td_sleepqueue != NULL failed at /usr/src/sys/kern/subr_sleepqueue.c:258 cpuid = 0 KDB: enter: panic [thread pid 1 tid 100003 ] Stopped at kdb_enter+0x38: ta %xcc, 1 db> wh Tracing pid 1 tid 100003 td 0xfffff801385067b0 panic() at panic+0x19c sleepq_add() at sleepq_add+0x168 cv_wait() at cv_wait+0x174 _sx_xlock() at _sx_xlock+0x64 kern_wait() at kern_wait+0x3c wait4() at wait4+0x18 syscall() at syscall+0x220 -- syscall (7, FreeBSD ELF64, wait4) %o7=0x10a7b0 -- About the only nonstandard thing I did was set kern.sched.ipiwakeup.onecpu=1 which was suggested for working around other deadlocks. I don't recall if preemption is enabled for this machine (I didn't set it up). Is there any other online debugging I can do? Kris --Bn2rw/3z4jIqBvZU Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQFCHRedWry0BWjoQKURAkfIAKCIK79iUFd8jdVHNqW9msHiHt9YogCeKmPF 7kBI4LIFtAn7/BTb/MBUKXQ= =zjbY -----END PGP SIGNATURE----- --Bn2rw/3z4jIqBvZU--
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