Date: Mon, 23 Apr 2001 22:52:30 +0200 From: Jens Schweikhardt <schweikh@schweikhardt.net> To: freebsd-current@freebsd.org Subject: duplicate locks and lock order reversal Message-ID: <20010423225230.A974@schweikhardt.net>
next in thread | raw e-mail | index | archive | help
hello, world\n my current kernel cvsupped around Apr 14th tells me about duplicate locks and lock order reversal. Is this reason to worry? ... Apr 23 22:23:09 hal9000 /boot/kernel/kernel: da0 at ahc0 bus 0 target 2 lun 0 Apr 23 22:23:10 hal9000 /boot/kernel/kernel: da0: <IBM DCAS-34330 S65A> Fixed Direct Access SCSI-2 device Apr 23 22:23:10 hal9000 /boot/kernel/kernel: da0: 20.000MB/s transfers (20.000MHz, offset 15) Apr 23 22:23:10 hal9000 /boot/kernel/kernel: da0: 4134MB (8467200 512 byte sectors: 255H 63S/T 527C) Apr 23 22:23:10 hal9000 /boot/kernel/kernel: acquring duplicate lock of same type: "allproc" Apr 23 22:23:10 hal9000 /boot/kernel/kernel: 1st @ /usr/src/sys/kern/kern_proc.c:584 Apr 23 22:23:10 hal9000 /boot/kernel/kernel: 2nd @ /usr/src/sys/kern/kern_proc.c:143 Apr 23 22:23:10 hal9000 /boot/kernel/kernel: lock order reversal Apr 23 22:23:10 hal9000 /boot/kernel/kernel: 1st vnode interlock last acquired @ /usr/src/sys/kern/vfs_vnops.c:625 Apr 23 22:23:10 hal9000 /boot/kernel/kernel: 2nd 0xc03c0120 mntvnode @ /usr/src/sys/ufs/ffs/ffs_vfsops.c:967 Apr 23 22:23:10 hal9000 /boot/kernel/kernel: 3rd 0xc8f68eac vnode interlock @ /usr/src/sys/ufs/ffs/ffs_vfsops.c:976 Apr 23 22:23:10 hal9000 lpd[315]: lpd startup: logging=0 Apr 23 22:24:08 hal9000 /boot/kernel/kernel: cd0 at ahc0 bus 0 target 3 lun 0 Apr 23 22:24:08 hal9000 /boot/kernel/kernel: cd0: <YAMAHA CRW6416S 1.0b> Removable CD-ROM SCSI-2 device Apr 23 22:24:08 hal9000 /boot/kernel/kernel: cd0: 10.000MB/s transfers (10.000MHz, offset 15) Apr 23 22:24:08 hal9000 /boot/kernel/kernel: cd0: Attempt to query device size failed: NOT READY, Medium not present - tray closed Apr 23 22:26:44 hal9000 /boot/kernel/kernel: i4b: unit 0, assigned TEI = 126 = 0x7e Apr 23 22:27:08 hal9000 /boot/kernel/kernel: [agree] Regards, Jens -- Jens Schweikhardt http://www.schweikhardt.net/ SIGSIG -- signature too long (core dumped) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20010423225230.A974>