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To: dyson@freefall.cdrom.com
cc: current@freefall.cdrom.com
Subject: mmap panics still
Date: Mon, 24 Apr 1995 04:36:09 -0700
Message-ID: <1647.798723369@freefall.cdrom.com>
From: Gary Palmer (FreeBSD/ARM Team) <gpalmer@freefall.cdrom.com>
Sender: current-owner@FreeBSD.org
Precedence: bulk


Hi

Satoshi jsut tried the same program on thud, and it still panic'd the kernel,
although the message was different this time.

Apr 24 02:47:57 thud savecore: reboot after panic: lockholder (%d) != 0

thud# kgdb ./kernel
Reading symbol data from /d/local/src/sys/compile/THUDG/kernel...done.
(kgdb) core-file /var/crash/vmcore.2
IdlePTD 1df000
panic: lockholder (%d) != 0
current pcb at 1d0ad0
Reading in symbols for ../../i386/i386/machdep.c...done.
(kgdb) bt
#0  boot (arghowto=260) (../../i386/i386/machdep.c line 869)
#1  0xf0117bc5 in panic (...)
#2  0xf0101311 in db_panic (...)
#3  0xf01011fa in db_command (...)
#4  0xf0101379 in db_command_loop (...)
#5  0xf0103e3c in db_trap (...)
#6  0xf01a3d0e in kdb_trap (...)
#7  0xf01ab348 in trap (...)
#8  0xf01a45d1 in exception:calltrap ()
#9  0xf0117bbf in panic (...)
#10 0xf0192686 in ufs_lock (...)
#11 0xf01a214d in vnode_pager_lock (...)
#12 0xf0195ee4 in vm_fault (...)
#13 0xf01ab5c7 in trap_pfault (...)
#14 0xf01ab2c7 in trap (...)
#15 0xf01a45d1 in exception:calltrap ()
#16 0xf0185535 in ffs_read (...)
#17 0xf01329d2 in vn_read (...)
#18 0xf0118d83 in read (...)
#19 0xf01abcc3 in syscall (...)

Any ideas? This was with a kernel compiled AFTER John's fixes to mmap()

Gary