From owner-freebsd-arch Mon Nov 6 18:46:56 2000 Delivered-To: freebsd-arch@freebsd.org Received: from earth.backplane.com (placeholder-dcat-1076843399.broadbandoffice.net [64.47.83.135]) by hub.freebsd.org (Postfix) with ESMTP id AC63637B4C5 for ; Mon, 6 Nov 2000 18:46:53 -0800 (PST) Received: (from dillon@localhost) by earth.backplane.com (8.11.1/8.9.3) id eA72kF271154; Mon, 6 Nov 2000 18:46:15 -0800 (PST) (envelope-from dillon) Date: Mon, 6 Nov 2000 18:46:15 -0800 (PST) From: Matt Dillon Message-Id: <200011070246.eA72kF271154@earth.backplane.com> To: Kirk McKusick Cc: arch@FreeBSD.ORG Subject: softdep panic due to blocked malloc (with traceback) Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG This occured during low-memory deadlock testing: -Matt (pageout daemon) A blocked malloc in the pageout daemon with a softdep lock held: #2 0xc0238f93 in vm_wait () at ../../vm/vm_page.c:891 #3 0xc0232d58 in kmem_malloc (map=0xc02db6a0, size=16384, flags=0) at ../../vm/vm_kern.c:361 #4 0xc015bb47 in malloc (size=16384, type=0xc02c0c20, flags=0) at ../../kern/kern_malloc.c:188 #5 0xc0223321 in softdep_disk_io_initiation (bp=0xcf379220) at ../../ufs/ffs/ffs_softdep.c:2807 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ here #6 0xc01964c3 in spec_strategy (ap=0xdca8fbdc) at ../../miscfs/specfs/spec_vnops.c:412 #7 0xc0195fe1 in spec_vnoperate (ap=0xdca8fbdc) at ../../miscfs/specfs/spec_vnops.c:117 #8 0xc022f31d in ufs_vnoperatespec (ap=0xdca8fbdc) at ../../ufs/ufs/ufs_vnops.c:2303 #9 0xc022ed55 in ufs_strategy (ap=0xdca8fc20) at vnode_if.h:923 #10 0xc022f2ed in ufs_vnoperate (ap=0xdca8fc20) at ../../ufs/ufs/ufs_vnops.c:2285 #11 0xc018369f in bwrite (bp=0xcf379220) at vnode_if.h:923 #12 0xc021f3e3 in ffs_balloc (ap=0xdca8fd40) at ../../ufs/ffs/ffs_balloc.c:316 #13 0xc0228119 in ffs_write (ap=0xdca8fd90) at vnode_if.h:1035 #14 0xc023d3fb in vnode_pager_generic_putpages (vp=0xe191fd80, m=0xdca8fea0, Caused a panic to occur here in the update daemon: #10 0xc0220429 in acquire_lock (lk=0xc02c0f5c) at ../../ufs/ffs/ffs_softdep.c:262 #11 0xc02207a6 in softdep_process_worklist (matchmnt=0x0) at ../../ufs/ffs/ffs_softdep.c:546 #12 0xc018b26b in sched_sync () at ../../kern/vfs_subr.c:1034 #13 0xc02542a0 in fork_trampoline () cannot read proc at 0 (kgdb) frame 10 #10 0xc0220429 in acquire_lock (lk=0xc02c0f5c) at ../../ufs/ffs/ffs_softdep.c:262 262 panic("softdep_lock: lock held by %d", lk->lkt_held); (kgdb) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message