Date: Sat, 24 Aug 2002 22:08:06 +0930 From: Ian West <ian@niw.com.au> To: freebsd-stable@freebsd.org Subject: PUC device not SMP safe ? Message-ID: <20020824123806.GA499@axiom.niw.com.au>
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I have two totally different MP machines which crash if they have PUC
devices installed as soon as there is serial traffic. I have a crash
dump from one with a debug kernel. The two machines in question both
work perfectly otherwise (and have done for a very long time). One is
currently running fine with a NON-SMP kernel and the puc serial device
active. The other still has the device physically installed, but has the
puc driver removed from the kernel config.
This traceback is with STABLE from today.
Traceback is as follows.
Fatal trap 12: page fault while in kernel mode
mp_lock = 01000002; cpuid = 1; lapic.id = 00000000
fault virtual address = 0x30
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0302521
stack pointer = 0x10:0xff80fde0
frame pointer = 0x10:0xff80fde8
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = resume, IOPL = 0
current process = Idle
interrupt mask = tty bio <- SMP: XXX
trap number = 12
panic: page fault
mp_lock = 01000002; cpuid = 1; lapic.id = 00000000
boot() called on cpu#1
Uptime: 1m28s
#0 dumpsys () at ../../kern/kern_shutdown.c:487
487 if (dumping++) {
(kgdb) where
#0 dumpsys () at ../../kern/kern_shutdown.c:487
#1 0xc01f0e6f in boot (howto=260) at ../../kern/kern_shutdown.c:316
#2 0xc01f12c8 in poweroff_wait (junk=0xc0407859, howto=-1069518033) at ../../kern/kern_shutdown.c:595
#3 0xc038e578 in trap_fatal (frame=0xff80fda0, eva=48) at ../../i386/i386/trap.c:974
#4 0xc038e209 in trap_pfault (frame=0xff80fda0, usermode=0, eva=48) at ../../i386/i386/trap.c:867
#5 0xc038dda7 in trap (frame={tf_fs = 16842776, tf_es = -8388592, tf_ds = -1071775728, tf_edi = 0, tf_esi = 0, tf_ebp = -8323608,
tf_isp = -8323636, tf_ebx = -1069327588, tf_edx = 1744879808, tf_ecx = -993171443, tf_eax = 0, tf_trapno = 12, tf_err = 0,
tf_eip = -1070586591, tf_cs = 8, tf_eflags = 65542, tf_esp = -784872948, tf_ss = 0}) at ../../i386/i386/trap.c:466
#6 0xc0302521 in acquire_lock (lk=0xc0435b1c) at machine/globals.h:114
#7 0xc0307c2c in softdep_count_dependencies (bp=0xd137ca0c, wantcount=0) at ../../ufs/ffs/ffs_softdep.c:4792
#8 0xc030af50 in ffs_fsync (ap=0xff80fe64) at ../../ufs/ffs/ffs_vnops.c:168
#9 0xc03099f2 in ffs_sync (mp=0xc4c6ba00, waitfor=2, cred=0xc1aea900, p=0xc048f940) at vnode_if.h:558
#10 0xc02214f7 in sync (p=0xc048f940, uap=0x0) at ../../kern/vfs_syscalls.c:576
#11 0xc01f0c0a in boot (howto=256) at ../../kern/kern_shutdown.c:235
#12 0xc01f12c8 in poweroff_wait (junk=0xc038cec2, howto=1) at ../../kern/kern_shutdown.c:595
#13 0xc038cec2 in bsl1 ()
#14 0xc037c8c0 in Xfastintr5 ()
#15 0xc03a22d7 in siointr (arg=0xc4b19800) at ../../isa/sio.c:1919
#16 0xc036f581 in puc_intr (arg=0xc4b08000) at ../../dev/puc/puc.c:358
#17 0xc03994e5 in intr_mux (arg=0xc4b13b40) at ../../i386/isa/intr_machdep.c:582
(kgdb) Aug 24 22:00:33 rabbit nsgproxy[88]: Unable to connect to database
Aug 24 22:00:33 rabbit nsgproxy[88]: Unable to connect to database
Aug 24 22:00:33 rabbit nsgproxy[88]: SQL open failed
Aug 24 22:00:33 rabbit nsgproxy[88]: SQL open failed
up 15
#15 0xc03a22d7 in siointr (arg=0xc4b19800) at ../../isa/sio.c:1919
1919 siointr1((struct com_s *) arg);
(kgdb)
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