NetBSD Problem Report #22301

Received: (qmail 23565 invoked by uid 605); 29 Jul 2003 23:10:53 -0000
Message-Id: <20030729231048.943.qmail@jane.endersgame.net>
Date: 29 Jul 2003 23:10:48 -0000
From: dive@endersgame.net
Sender: gnats-bugs-owner@NetBSD.org
Reply-To: dive@endersgame.net
To: gnats-bugs@gnats.netbsd.org
Subject: pcictl causes deadlock on AlphaStation 600 5/266
X-Send-Pr-Version: 3.95

>Number:         22301
>Category:       port-alpha
>Synopsis:       running pcictl pci1 list causes deadlock on an AlphaStation 600 5/266
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-alpha-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 29 23:11:00 +0000 2003
>Closed-Date:    
>Last-Modified:  Wed Jul 30 11:54:22 +0000 2003
>Originator:     dive
>Release:        NetBSD 1.6U
>Organization:
EGNet
>Environment:

/netbsd:
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     $NetBSD: prom_disp.s,v 1.8 1997/11/03 04:22:03 ross Exp $
     $NetBSD: pal.s,v 1.15 2002/05/13 21:38:30 thorpej Exp $
     $NetBSD: transfer.s,v 1.3 2001/04/10 10:09:46 ross Exp $
     $NetBSD: param.c,v 1.40 2001/12/17 15:40:43 atatat Exp $
     $NetBSD: igmp.c,v 1.34 2003/06/26 03:11:08 itojun Exp $
     $NetBSD: in.c,v 1.89 2003/06/26 03:35:00 itojun Exp $
     $NetBSD: in_pcb.c,v 1.85 2003/07/22 02:09:30 itojun Exp $
     $NetBSD: in_proto.c,v 1.58 2002/11/02 19:03:44 itojun Exp $
     $NetBSD: ip_icmp.c,v 1.74 2003/06/26 21:43:39 itojun Exp $
     $NetBSD: ip_input.c,v 1.171 2003/07/14 16:39:43 itojun Exp $
     $NetBSD: ip_output.c,v 1.107 2003/06/30 02:08:28 itojun Exp $
     $NetBSD: raw_ip.c,v 1.70 2003/06/29 22:31:57 fvdl Exp $
     $NetBSD: tcp_debug.c,v 1.18 2002/06/09 16:33:43 itojun Exp $
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     $NetBSD: tcp_usrreq.c,v 1.81 2003/06/29 22:32:00 fvdl Exp $
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     $NetBSD: ip_fil.c,v 1.93 2003/06/30 00:15:12 itojun Exp $
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     $NetBSD: ip_rcmd_pxy.c,v 1.9 2002/01/24 08:23:45 martti Exp $
     $NetBSD: ip_raudio_pxy.c,v 1.8 2002/01/24 08:23:14 martti Exp $
     $NetBSD: ip_netbios_pxy.c,v 1.4 2002/09/19 08:12:53 martti Exp $
     $NetBSD: ip_h323_pxy.c,v 1.8 2003/06/23 15:20:57 martin Exp $
     $NetBSD: ip_ipsec_pxy.c,v 1.2 2002/04/01 16:47:46 jdolecek Exp $
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     $NetBSD: ffs_alloc.c,v 1.68 2003/06/29 22:32:34 fvdl Exp $
     $NetBSD: ffs_balloc.c,v 1.33 2003/04/02 10:39:36 fvdl Exp $
     $NetBSD: ffs_inode.c,v 1.59 2003/06/29 22:32:35 fvdl Exp $
     $NetBSD: ffs_softdep.c,v 1.50 2003/06/29 22:32:35 fvdl Exp $
     $NetBSD: ffs_subr.c,v 1.28 2003/04/02 10:39:38 fvdl Exp $
     $NetBSD: ffs_tables.c,v 1.5 2002/01/31 19:19:23 tv Exp $
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     $NetBSD: ffs_vnops.c,v 1.59 2003/06/29 22:32:37 fvdl Exp $
     $NetBSD: ufs_readwrite.c,v 1.54 2003/06/29 22:32:48 fvdl Exp $
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     $NetBSD: ufs_lookup.c,v 1.48 2003/07/23 13:56:53 yamt Exp $
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     $NetBSD: ufs_vnops.c,v 1.102 2003/06/29 22:32:48 fvdl Exp $
     $NetBSD: clockctl.c,v 1.12 2003/06/29 22:29:58 fvdl Exp $
     $NetBSD: mm.c,v 1.4 2003/06/29 22:30:01 fvdl Exp $
     $NetBSD: rnd.c,v 1.42 2003/06/29 22:30:01 fvdl Exp $
     $NetBSD: rndpool.c,v 1.17 2002/11/10 03:29:00 thorpej Exp $
     $NetBSD: core_elf64.c,v 1.1 2001/12/09 23:06:00 thorpej Exp $
     $NetBSD: core_elf32.c,v 1.10 2003/06/29 22:31:15 fvdl Exp $
     $NetBSD: core_netbsd.c,v 1.5 2003/06/29 22:31:15 fvdl Exp $
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     $NetBSD: exec_conf.c,v 1.82 2003/06/29 22:31:15 fvdl Exp $
     $NetBSD: exec_elf64.c,v 1.2 2001/11/12 15:25:03 lukem Exp $
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     $NetBSD: exec_elf_common.c,v 1.16 2002/11/17 22:53:46 chs Exp $
     $NetBSD: exec_script.c,v 1.36 2003/06/29 22:31:16 fvdl Exp $
     $NetBSD: exec_subr.c,v 1.37 2003/06/29 22:31:17 fvdl Exp $
     $NetBSD: init_main.c,v 1.221 2003/06/29 22:31:17 fvdl Exp $
     $NetBSD: init_sysent.c,v 1.144 2003/03/18 18:09:48 christos Exp $
     $NetBSD: kern_acct.c,v 1.54 2003/06/29 22:31:18 fvdl Exp $
     $NetBSD: kern_allocsys.c,v 1.23 2003/02/04 01:21:04 thorpej Exp $
     $NetBSD: kern_clock.c,v 1.86 2003/06/23 11:02:04 martin Exp $
     $NetBSD: kern_descrip.c,v 1.110 2003/06/29 22:31:18 fvdl Exp $
     $NetBSD: kern_event.c,v 1.17 2003/07/18 17:34:07 fvdl Exp $
     $NetBSD: kern_exec.c,v 1.170 2003/07/16 22:42:48 dsl Exp $
     $NetBSD: kern_exit.c,v 1.118 2003/07/17 18:16:58 fvdl Exp $
     $NetBSD: kern_fork.c,v 1.109 2003/06/29 22:31:20 fvdl Exp $
     $NetBSD: kern_kthread.c,v 1.15 2003/01/18 10:06:26 thorpej Exp $
     $NetBSD: kern_ktrace.c,v 1.75 2003/07/16 22:42:47 dsl Exp $
     $NetBSD: kern_lock.c,v 1.71 2003/02/19 22:34:42 pk Exp $
     $NetBSD: kern_lwp.c,v 1.11 2003/07/17 19:05:30 fvdl Exp $
     $NetBSD: kern_malloc.c,v 1.79 2003/05/06 18:07:57 fvdl Exp $
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     $NetBSD: kern_prot.c,v 1.79 2003/05/16 13:55:18 christos Exp $
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     $NetBSD: kern_sa.c,v 1.19 2003/07/21 19:21:12 nathanw Exp $
     $NetBSD: kern_sig.c,v 1.145 2003/07/21 22:57:46 nathanw Exp $
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     $NetBSD: kern_sysctl.c,v 1.138 2003/07/02 20:07:45 ragge Exp $
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     $NetBSD: uipc_socket2.c,v 1.53 2003/06/29 22:31:31 fvdl Exp $
     $NetBSD: uipc_syscalls.c,v 1.81 2003/06/29 22:31:31 fvdl Exp $
     $NetBSD: uipc_usrreq.c,v 1.66 2003/07/24 07:30:48 jdolecek Exp $
     $NetBSD: vfs_bio.c,v 1.92 2003/04/09 12:55:51 yamt Exp $
     $NetBSD: vfs_cache.c,v 1.45 2003/06/29 22:31:32 fvdl Exp $
     $NetBSD: vfs_getcwd.c,v 1.20 2003/06/29 22:31:33 fvdl Exp $
     $NetBSD: vfs_init.c,v 1.23 2003/05/17 15:53:42 mjl Exp $
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     $NetBSD: uvm_pager.c,v 1.60 2003/04/23 00:55:22 tls Exp $
     $NetBSD: uvm_pdaemon.c,v 1.51 2003/04/23 00:55:22 tls Exp $
     $NetBSD: uvm_pglist.c,v 1.26 2003/03/10 19:52:24 thorpej Exp $
     $NetBSD: uvm_stat.c,v 1.22 2001/12/09 03:07:20 chs Exp $
     $NetBSD: uvm_swap.c,v 1.80 2003/06/29 22:32:51 fvdl Exp $
     $NetBSD: uvm_unix.c,v 1.28 2003/05/25 13:00:40 simonb Exp $
     $NetBSD: uvm_user.c,v 1.11 2001/11/10 07:37:01 lukem Exp $
     $NetBSD: uvm_vnode.c,v 1.62 2003/06/29 22:32:52 fvdl Exp $
     $NetBSD: shared_intr.c,v 1.16 2001/07/27 00:25:19 thorpej Exp $
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     $NetBSD: scsiconf.c,v 1.207 2003/06/29 22:30:40 fvdl Exp $
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     $NetBSD: wsdisplay.c,v 1.75 2003/06/29 22:31:02 fvdl Exp $
     $NetBSD: wsemulconf.c,v 1.5 2001/10/13 15:56:16 augustss Exp $
     $NetBSD: wsemul_dumb.c,v 1.8 2001/10/13 15:56:15 augustss Exp $
     $NetBSD: wsemul_vt100.c,v 1.24 2003/04/19 23:28:46 christos Exp $
     $NetBSD: wsemul_vt100_subr.c,v 1.14 2003/04/02 18:22:56 drochner Exp $
     $NetBSD: wsemul_vt100_chars.c,v 1.8 2001/12/01 16:07:58 bjh21 Exp $
     $NetBSD: wsemul_vt100_keys.c,v 1.5 2001/11/13 06:17:47 lukem Exp $
     $NetBSD: wsevent.c,v 1.15 2003/06/29 22:31:03 fvdl Exp $
     $NetBSD: wskbd.c,v 1.69 2003/06/29 22:31:04 fvdl Exp $
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     $NetBSD: isp_pci.c,v 1.88 2003/05/03 18:11:36 wiz Exp $
     $NetBSD: ppb.c,v 1.26 2003/06/15 23:09:09 fvdl Exp $
     $NetBSD: vga_pci.c,v 1.23 2003/06/29 22:30:29 fvdl Exp $
     $NetBSD: if_tlp_pci.c,v 1.73 2003/06/27 12:25:38 itohy Exp $
     $NetBSD: isa.c,v 1.116 2003/01/01 00:10:20 thorpej Exp $
     $NetBSD: com_isa.c,v 1.20 2002/10/02 03:10:46 thorpej Exp $
     $NetBSD: pckbc_isa.c,v 1.11 2002/10/04 03:40:29 soren Exp $
     $NetBSD: pcppi.c,v 1.9 2002/10/02 03:10:49 thorpej Exp $
     $NetBSD: spkr.c,v 1.15 2003/06/29 22:30:22 fvdl Exp $
     $NetBSD: isa_machdep.c,v 1.15 2002/10/02 04:06:38 thorpej Exp $
     $NetBSD: pckbd.c,v 1.34 2003/02/05 17:36:16 perry Exp $
     $NetBSD: wskbdmap_mfii.c,v 1.26 2003/04/23 04:03:58 uwe Exp $
     $NetBSD: eisa.c,v 1.31 2003/01/01 00:10:17 thorpej Exp $
     $NetBSD: eisa_machdep.c,v 1.5 2002/06/01 23:50:53 lukem Exp $
     $NetBSD: pci_sgmap_pte64.c,v 1.5 2001/07/19 06:40:02 thorpej Exp $
     $NetBSD: sgmap_typedep.c,v 1.28 2003/07/15 02:13:13 lukem Exp $
     $NetBSD: cia.c,v 1.62 2003/06/15 23:08:54 fvdl Exp $
     $NetBSD: cia_dma.c,v 1.18 2001/07/19 18:42:42 thorpej Exp $
     $NetBSD: cia_pci.c,v 1.26 2002/05/15 16:57:42 thorpej Exp $
     $NetBSD: cia_bwx_bus_io.c,v 1.3 2000/06/29 08:58:46 mrg Exp $
     $NetBSD: pci_bwx_bus_io_chipdep.c,v 1.14 2003/07/14 23:25:39 lukem Exp $
     $NetBSD: cia_bwx_bus_mem.c,v 1.3 2000/06/29 08:58:46 mrg Exp $
     $NetBSD: pci_bwx_bus_mem_chipdep.c,v 1.18 2003/07/14 23:25:39 lukem Exp $
     $NetBSD: cia_swiz_bus_io.c,v 1.15 2000/06/29 08:58:46 mrg Exp $
     $NetBSD: pci_swiz_bus_io_chipdep.c,v 1.33 2003/07/14 23:25:39 lukem Exp $
     $NetBSD: cia_swiz_bus_mem.c,v 1.16 2000/06/29 08:58:46 mrg Exp $
     $NetBSD: pci_swiz_bus_mem_chipdep.c,v 1.38 2003/07/14 23:25:40 lukem Exp $
     $NetBSD: pci_kn20aa.c,v 1.44 2002/09/27 15:35:38 provos Exp $
     $NetBSD: pci_machdep.c,v 1.15 2001/07/16 00:55:17 elric Exp $
     $NetBSD: sio.c,v 1.36 2003/01/01 00:39:20 thorpej Exp $
     $NetBSD: sio_pic.c,v 1.31 2002/09/27 15:35:38 provos Exp $
     $NetBSD: mcclock.c,v 1.10 1998/01/12 10:21:04 thorpej Exp $
     $NetBSD: mcclock_isa.c,v 1.13 2002/10/02 04:06:38 thorpej Exp $
     $NetBSD: autoconf.c,v 1.39 2002/09/06 13:18:53 gehenna Exp $
     $NetBSD: clock.c,v 1.33 2003/06/23 11:01:00 martin Exp $
     $NetBSD: clock_subr.c,v 1.7 2001/11/13 05:32:49 lukem Exp $
     $NetBSD: cpuconf.c,v 1.29 2003/07/14 23:25:37 lukem Exp $
     $NetBSD: interrupt.c,v 1.66 2003/02/05 12:16:42 nakayama Exp $
     $NetBSD: machdep.c,v 1.271 2003/07/24 19:17:51 nathanw Exp $
     $NetBSD: mainbus.c,v 1.31 2003/01/01 00:39:19 thorpej Exp $
     $NetBSD: mem.c,v 1.34 2003/04/01 02:18:52 thorpej Exp $
     $NetBSD: kern_microtime.c,v 1.4 2003/06/28 15:02:24 simonb Exp $
     $NetBSD: pmap.c,v 1.200 2003/05/10 21:10:26 thorpej Exp $
     $NetBSD: process_machdep.c,v 1.19 2003/01/17 22:11:18 thorpej Exp $
     $NetBSD: prom.c,v 1.44 2003/03/08 01:18:42 he Exp $
     $NetBSD: sys_machdep.c,v 1.15 2003/01/17 22:11:18 thorpej Exp $
     $NetBSD: syscall.c,v 1.9 2003/06/29 22:28:04 fvdl Exp $
     $NetBSD: trap.c,v 1.80 2003/06/23 11:01:00 martin Exp $
     $NetBSD: fp_complete.c,v 1.6 2003/01/17 22:11:17 thorpej Exp $
     $NetBSD: vm_machdep.c,v 1.80 2003/06/29 22:28:04 fvdl Exp $
     $NetBSD: disksubr.c,v 1.27 2003/05/10 23:12:29 thorpej Exp $
     $NetBSD: bus_dma.c,v 1.55 2003/06/29 22:28:04 fvdl Exp $
     $NetBSD: comlogout.c,v 1.4 2001/01/03 21:40:25 thorpej Exp $
     $NetBSD: cons.c,v 1.48 2003/06/29 22:29:58 fvdl Exp $
     $NetBSD: in_cksum.c,v 1.11 2001/05/19 14:21:13 thorpej Exp $
     $NetBSD: in4_cksum.c,v 1.9 2002/07/29 09:14:37 itojun Exp $
     $NetBSD: promcons.c,v 1.24 2003/06/29 22:28:03 fvdl Exp $
     $NetBSD: dec_kn20aa.c,v 1.53 2003/06/14 17:01:08 thorpej Exp $
     $NetBSD: vm_43.c,v 1.8 2003/01/18 07:28:34 thorpej Exp $
     $NetBSD: vfs_syscalls_43.c,v 1.24 2003/06/29 22:29:14 fvdl Exp $
     $NetBSD: uipc_syscalls_43.c,v 1.21 2003/06/29 22:29:14 fvdl Exp $
     $NetBSD: tty_43.c,v 1.16 2003/06/29 22:29:14 fvdl Exp $
     $NetBSD: kern_sig_43.c,v 1.18 2003/01/18 07:28:34 thorpej Exp $
     $NetBSD: kern_resource_43.c,v 1.10 2003/01/18 07:28:34 thorpej Exp $
     $NetBSD: kern_info_43.c,v 1.16 2003/06/29 22:29:13 fvdl Exp $
     $NetBSD: kern_exit_43.c,v 1.10 2003/01/18 07:28:34 thorpej Exp $
     $NetBSD: compat_util.c,v 1.27 2003/06/29 22:29:13 fvdl Exp $

System: NetBSD jane.endersgame.net 1.6U NetBSD 1.6U (JANE) #7: Fri Jul 25 00:00:01 EDT 2003 dive@jane.endersgame.net:/sys/arch/alpha/compile/JANE alpha
Architecture: alpha
Machine: alpha
>Description:
I was peeking at the PCI devices with 'pcictl <bus> list'. pcictl pci0 list worked just fine:
<dive@jane(/home/dive)> % pcictl pci0 list
000:08:0: Adaptec AHA-2940 Ultra (SCSI mass storage, revision 0x01)
000:09:0: ADMtek ADMtek AN985 10/100 Ethernet (ethernet network, revision 0x11)
000:10:0: Intel 82375EB/SB PCI-EISA Bridge (PCEB) (miscellaneous prehistoric, revision 0x05)
000:11:0: Digital Equipment DECchip 21050 PCI-PCI Bridge (PCI bridge, revision 0x02)
000:12:0: Digital Equipment product 0x0017 (VGA display, revision 0x01)

However, pcictl pci1 list output the following:
<dive@jane(/home/dive)> % pcictl pci1 list
001:00:0: Digital Equipment DECchip 21040 ("Tulip") Ethernet (ethernet network, revision 0x23)
001:01:0: Q Logic ISP1020 (SCSI mass storage, revision 0x01)
001:02:0: Q Logic ISP1020 (SCSI mass storage, revision 0x01)

And at that point the machine froze hard. Unresponsive to pings, and the halt
button did not work either (it does normally, though it of course just halts the
CPU and drops to SRM instead of halting NetBSD cleanly) The reset button worked.

This might also comprise a DoS vulnerability, as the /dev/pci devices are by default mode 644. I was running pcictl as a normal user when I hung the machine.
>How-To-Repeat:
On an AlphaStation 600 5/266 running NetBSD/alpha-current, run:
pcictl pci1 list
I think it may be related to the fact that pci1 is really on a pci-pci bridge,
but on my NetBSD/i386 machine it lists devices on a pci bus that is on a pci-pci
just fine, no deadlock.
>Fix:
Unknown, but I think the default permissions on /dev/pci? should be more
restrictive.
>Release-Note:
>Audit-Trail:

From: Klaus Klein <kleink@reziprozitaet.de>
To: gnats-bugs@gnats.netbsd.org
Cc: dive@endersgame.net
Subject: Re: port-alpha/22301: pcictl causes deadlock on AlphaStation 600
 5/266
Date: Wed, 30 Jul 2003 08:30:14 +0200

 On a related note, this illustrates pretty well why I filed
 kern/16300.


 - Klaus
State-Changed-From-To: open->closed 
State-Changed-By: jdolecek 
State-Changed-When: Wed Jul 30 09:22:50 UTC 2003 
State-Changed-Why:  
Committer requested close. 
State-Changed-From-To: closed->open 
State-Changed-By: jdolecek 
State-Changed-When: Wed Jul 30 11:53:16 UTC 2003 
State-Changed-Why:  
According to committer, it happens with up-to-date source kernel 
when the kernel is compiled without DDB, reliably. Someone needs 
to look at this. 
>Unformatted:

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