* PROBLEM: cat /proc/ioports Segmentation faults
@ 2001-10-11 3:34 Bob Tanner
2001-10-13 0:29 ` Randy.Dunlap
0 siblings, 1 reply; 2+ messages in thread
From: Bob Tanner @ 2001-10-11 3:34 UTC (permalink / raw)
To: linux-kernel
[1.] One line summary of the problem:
cat /proc/ioports seg faults
[2.] Full description of the problem/report:
Upgraded from 2.4.10 to 2.4.11, during troubleshooting a usb problem, I was
cat-ing /proc/interrupts and /proc/ioports. The last cat to /proc/ioports seg
faulted and syslog says this:
Oct 10 23:22:51 transmuter kernel: Unable to handle kernel paging request at
virtual address c883a769
Oct 10 23:22:51 transmuter kernel: printing eip:
Oct 10 23:22:51 transmuter kernel: c021fb5b
Oct 10 23:22:51 transmuter kernel: *pde = 07f9d067
Oct 10 23:22:51 transmuter kernel: *pte = 00000000
Oct 10 23:22:51 transmuter kernel: Oops: 0000
Oct 10 23:22:51 transmuter kernel: CPU: 0
Oct 10 23:22:51 transmuter kernel: EIP: 0010:[vsnprintf+523/1056] Not
tainted
Oct 10 23:22:51 transmuter kernel: EFLAGS: 00010297
Oct 10 23:22:51 transmuter kernel: eax: c883a769 ebx: c4e29297 ecx: c883a769
edx: fffffffe
Oct 10 23:22:51 transmuter kernel: esi: ffffffff edi: c71bfec8 ebp: ffffffff
esp: c71bfe70
Oct 10 23:22:51 transmuter kernel: ds: 0018 es: 0018 ss: 0018
Oct 10 23:22:51 transmuter kernel: Process cat (pid: 1353, stackpage=c71bf000)
Oct 10 23:22:51 transmuter kernel: Stack: 00000000 ffffffff 0000000a c1204e80
c4e29289 00000006 c4e2a000 c021fda6
Oct 10 23:22:51 transmuter kernel: c4e29289 3b1d6d77 c022bc46 c71bfebc
c021fdc4 c4e29289 c022bc35 c71bfebc
Oct 10 23:22:51 transmuter kernel: c011a43b c4e29289 c022bc35 0000fcc0
0000fcdf c883a769 c12114c8 c4e29289
Oct 10 23:22:51 transmuter kernel: Call Trace: [vsprintf+22/32] [sprintf+20/32]
[do_resource_list+75/128] [do_resource_list+107/128] [get_resource_list+49/64]
Oct 10 23:22:51 transmuter kernel: [ioports_read_proc+46/96]
[proc_file_read+206/400] [sys_read+150/208] [system_call+51/56]
Oct 10 23:22:51 transmuter kernel:
Oct 10 23:22:51 transmuter kernel: Code: 80 38 00 74 07 40 4a 83 fa ff 75 f4 29
c8 f6 04 24 10 89 c6
[3.] Keywords (i.e., modules, networking, kernel):
# lsmod
Module Size Used by
3c574_cs 8768 1
ppp_async 6160 0 (autoclean) (unused)
ppp_generic 17168 0 (autoclean) [ppp_async]
slhc 4576 0 (autoclean) [ppp_generic]
agpgart 28448 0 (unused)
ymfpci 40704 0
uart401 6096 0 [ymfpci]
sound 54400 0 [uart401]
soundcore 3568 4 [ymfpci sound]
ac97_codec 9264 0 [ymfpci]
[4.] Kernel version (from /proc/version):
# cat /proc/version
Linux version 2.4.11 (root@transmuter.real-time.com) (gcc version 2.96 20000731
(Red Hat Linux 7.1 2.96-85)) #1 Wed Oct 10 22:51:43 CDT 2001
[5.] Output of Oops.. message (if applicable) with symbolic information
resolved (see Documentation/oops-tracing.txt)
ksymoops 2.3.4 on i686 2.4.11. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.11/ (default)
-m /usr/src/linux/System.map (default)
Warning: You did not tell me where to find symbol information. I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc. ksymoops -h explains the options.
Warning (compare_maps): mismatch on symbol _ctype , ksyms_base says c027ec14,
System.map says c027ebf4. Ignoring ksyms_base entry
Warning (compare_maps): ksyms_base symbol acpi_fadt_R__ver_acpi_fadt not found
in System.map. Ignoring ksyms_base entry
Warning (compare_maps): ksyms_base symbol acpi_gbl_FADT_R__ver_acpi_gbl_FADT not
found in System.map. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol arp_broken_ops , ksyms_base says
c027d1c0, System.map says c027d1a0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol arp_tbl , ksyms_base says
c027d1e0,System.map says c027d1c0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_get_device_context , ksyms_base
says c0196150, System.map says c0195d50. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_get_device_info , ksyms_base says
c01960a0, System.map says c0195ca0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_get_device_power_state ,
ksyms_base says c0195e40, System.map says c0195a40. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_get_device_status , ksyms_base
says c0195f90, System.map says c0195b90. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_osl_generate_event , ksyms_base
says c0195a40, System.map says c01965b0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_register_driver , ksyms_base says
c0196220, System.map says c0195e20. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_set_device_power_state ,
ksyms_base says c0195f00, System.map says c0195b00. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol bm_unregister_driver , ksyms_base
says c01963c0, System.map says c0195fc0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol color_table , ksyms_base says
c0272f1c, System.map says c0272efc. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol dead_socket , ksyms_base says
c027b5dc, System.map says c027b5bc. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol default_blu , ksyms_base says
c0272fac, System.map says c0272f8c. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol default_grn , ksyms_base says
c0272f6c, System.map says c0272f4c. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol default_red , ksyms_base says
c0272f2c, System.map says c0272f0c. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol dev_base , ksyms_base says c0279ef4,
System.map says c0279ed4. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol dev_base_lock , ksyms_base says
c0279ef8, System.map says c0279ed8. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol ide_fops , ksyms_base says c027a148,
System.map says c027a128. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol if_port_text , ksyms_base says
c027c1e8, System.map says c027c1c8. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol inet_dgram_ops , ksyms_base says
c027da80, System.map says c027da60. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol inet_family_ops , ksyms_base says
c027dac4, System.map says c027daa4. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol inet_stream_ops , ksyms_base says
c027da20, System.map says c027da00. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol inetdev_lock , ksyms_base says
c027d618, System.map says c027d5f8. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol io_request_lock , ksyms_base says
c0278828, System.map says c0278808. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol ipv4_specific , ksyms_base says
c027cec0, System.map says c027cea0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol keyboard_tasklet , ksyms_base says
c027734c, System.map says c027732c. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol loopback_dev , ksyms_base says
c0279dc0, System.map says c0279da0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol noop_qdisc , ksyms_base says
c027c7e0, System.map says c027c7c0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol pci_devices , ksyms_base says
c027a3e8, System.map says c027a3c8. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol pci_root_buses , ksyms_base says
c027a3e0, System.map says c027a3c0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol proc_pccard , ksyms_base says
c027b5ec, System.map says c027b5cc. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol qdisc_tree_lock , ksyms_base says
c027c780, System.map says c027c760. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol rtnl_sem , ksyms_base says c027c6d0,
System.map says c027c6b0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_ip_default_ttl , ksyms_base
says c027cdc8, System.map says c027cda8. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_local_port_range , ksyms_base
says c027ce84, System.map says c027ce64. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_max_syn_backlog , ksyms_base
says c027ce90, System.map says c027ce70. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_rmem_max , ksyms_base says
c027bf64, System.map says c027bf44. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_tcp_ecn , ksyms_base says
c027ce28, System.map says c027ce08. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_tcp_reordering , ksyms_base
says c027ce24, System.map says c027ce04. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_tcp_rmem , ksyms_base says
c027cdf8, System.map says c027cdd8. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_tcp_tw_recycle , ksyms_base
says c027cf84, System.map says c027cf64. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_tcp_wmem , ksyms_base says
c027cdec, System.map says c027cdcc. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol sysctl_wmem_max , ksyms_base says
c027bf60, System.map says c027bf40. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol tcp_port_rover , ksyms_base says
c027ce8c, System.map says c027ce6c. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol tcp_prot , ksyms_base says c027cf00,
System.map says c027cee0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol tq_disk , ksyms_base says c0278820,
System.map says c0278800. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol udp_hash_lock , ksyms_base says
c027d0a0, System.map says c027d080. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol udp_prot , ksyms_base says c027d0c0
System.map says c027d0a0. Ignoring ksyms_base entry
Warning (compare_maps): mismatch on symbol yenta_operations , ksyms_base says
c027b880, System.map says c027b860. Ignoring ksyms_base entry
ac97_codec: AC97 Audio codec, id: 0x414b:0x4d02 (Asahi Kasei AK4543)
3c574_cs.c v1.08 9/24/98 Donald Becker/David Hinds, becker@scyld.com.
Unable to handle kernel paging request at virtual address c883a769
c021fb5b
*pde = 07f9d067
Oops: 0000
CPU: 0
EIP: 0010:[<c021fb5b>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010297
eax: c883a769 ebx: c4e29297 ecx: c883a769 edx: fffffffe
esi: ffffffff edi: c71bfec8 ebp: ffffffff esp: c71bfe70
ds: 0018 es: 0018 ss: 0018
Process cat (pid: 1353, stackpage=c71bf000)
Stack: 00000000 ffffffff 0000000a c1204e80 c4e29289 00000006 c4e2a000 c021fda6
c4e29289 3b1d6d77 c022bc46 c71bfebc c021fdc4 c4e29289 c022bc35 c71bfebc
c011a43b c4e29289 c022bc35 0000fcc0 0000fcdf c883a769 c12114c8 c4e29289
Call Trace: [<c021fda6>] [<c021fdc4>] [<c011a43b>] [<c011a45b>] [<c011a4a1>]
[<c014d7fe>] [<c014b5be>] [<c0131406>] [<c0106ce7>]
Code: 80 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 f6 04 24 10 89 c6
>>EIP; c021fb5b <vsnprintf+20b/420> <=====
Trace; c021fda6 <vsprintf+16/20>
Trace; c021fdc4 <sprintf+14/20>
Trace; c011a43b <do_resource_list+4b/80>
Trace; c011a45b <do_resource_list+6b/80>
Trace; c011a4a1 <get_resource_list+31/40>
Trace; c014d7fe <ioports_read_proc+2e/60>
Trace; c014b5be <proc_file_read+ce/190>
Trace; c0131406 <sys_read+96/d0>
Trace; c0106ce7 <system_call+33/38>
Code; c021fb5b <vsnprintf+20b/420>
00000000 <_EIP>:
Code; c021fb5b <vsnprintf+20b/420> <=====
0: 80 38 00 cmpb $0x0,(%eax) <=====
Code; c021fb5e <vsnprintf+20e/420>
3: 74 07 je c <_EIP+0xc> c021fb67
<vsnprintf+217/420>
Code; c021fb60 <vsnprintf+210/420>
5: 40 inc %eax
Code; c021fb61 <vsnprintf+211/420>
6: 4a dec %edx
Code; c021fb62 <vsnprintf+212/420>
00000000 <_EIP>:
Code; c021fb5b <vsnprintf+20b/420> <=====
0: 80 38 00 cmpb $0x0,(%eax) <=====
Code; c021fb5e <vsnprintf+20e/420>
3: 74 07 je c <_EIP+0xc> c021fb67
<vsnprintf+217/420>
Code; c021fb60 <vsnprintf+210/420>
5: 40 inc %eax
Code; c021fb61 <vsnprintf+211/420>
6: 4a dec %edx
Code; c021fb62 <vsnprintf+212/420>
7: 83 fa ff cmp $0xffffffff,%edx
Code; c021fb65 <vsnprintf+215/420>
a: 75 f4 jne 0 <_EIP>
Code; c021fb67 <vsnprintf+217/420>
c: 29 c8 sub %ecx,%eax
Code; c021fb69 <vsnprintf+219/420>
e: f6 04 24 10 testb $0x10,(%esp,1)
Code; c021fb6d <vsnprintf+21d/420>
12: 89 c6 mov %eax,%esi
53 warnings issued. Results may not be reliable.
[6.] A small shell script or example program which triggers the
problem (if possible)
[7.] Environment
[7.1.] Software (add the output of the ver_linux script here)
Linux transmuter.real-time.com 2.4.11 #1 Wed Oct 10 22:51:43 CDT 2001 i686
unknown
Gnu C 2.96
Gnu make 3.79.1
binutils 2.10.0.18
util-linux 2.10m
mount 2.10r
modutils 2.3.21
e2fsprogs 1.18
pcmcia-cs 3.1.20
PPP 2.4.0
isdn4k-utils 3.1pre1
Linux C Library 2.2.2
Dynamic linker (ldd) 2.2.2
Procps 2.0.7
Net-tools 1.56
Console-tools 0.3.3
Sh-utils 2.0
Modules Loaded 3c574_cs ppp_async ppp_generic slhc agpgart ymfpci
uart401 sound soundcore ac97_codec
[7.2.] Processor information (from /proc/cpuinfo):
# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 3
cpu MHz : 744.475
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat
pse36 mmx fxsr sse
bogomips : 1484.39
[7.3.] Module information (from /proc/modules):
# cat /proc/modules
3c574_cs 8768 1
ppp_async 6160 0 (autoclean) (unused)
ppp_generic 17168 0 (autoclean) [ppp_async]
slhc 4576 0 (autoclean) [ppp_generic]
agpgart 28448 0 (unused)
ymfpci 40704 0
uart401 6096 0 [ymfpci]
sound 54400 0 [uart401]
soundcore 3568 4 [ymfpci sound]
ac97_codec 9264 0 [ymfpci]
[7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
Can't give you /proc/ioports, it seg faults.
# cat /proc/iomem
00000000-0009f7ff : System RAM
0009f800-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000f0000-000fffff : System ROM
00100000-07feffff : System RAM
00100000-00224abb : Kernel code
00224abc-0027ed13 : Kernel data
07ff0000-07fff7ff : ACPI Tables
07fff800-07ffffff : ACPI Non-volatile Storage
10000000-10000fff : Ricoh Co Ltd RL5c478
10001000-10001fff : Ricoh Co Ltd RL5c478 (#2)
10400000-107fffff : PCI CardBus #02
10800000-10bfffff : PCI CardBus #02
10c00000-10ffffff : PCI CardBus #06
11000000-113fffff : PCI CardBus #06
40000000-40ffffff : Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge
a0000000-a0000fff : card services
fc000000-fdffffff : PCI Bus #01
fc000000-fdffffff : Neomagic Corporation NM2380 [MagicMedia 256XL+]
fe800000-fecfffff : PCI Bus #01
fe800000-febfffff : Neomagic Corporation NM2380 [MagicMedia 256XL+]
fec00000-fecfffff : Neomagic Corporation NM2380 [MagicMedia 256XL+]
fede0000-fedeffff : CONEXANT SoftK56 Speakerphone Winmodem
fedf0000-fedf7fff : Yamaha Corporation YMF-744B [DS-1S Audio Controller]
fedff000-fedff7ff : Sony Corporation CXD3222 i.LINK Controller
fedffc00-fedffdff : Sony Corporation CXD3222 i.LINK Controller
fff80000-ffffffff : reserved
[7.5.] PCI information ('lspci -vvv' as root)
00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev
03)
Subsystem: Sony Corporation: Unknown device 806f
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ >SERR- <PERR-
Latency: 64
Region 0: Memory at 40000000 (32-bit, prefetchable) [size=16M]
Capabilities: [a0] AGP version 1.0
Status: RQ=31 SBA+ 64bit- FW- Rate=x1,x2
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03)
(prog-if 00 [Normal decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 128
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
I/O behind bridge: 0000f000-00000fff
Memory behind bridge: fe800000-fecfffff
Prefetchable memory behind bridge: fc000000-fdffffff
BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B+
00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02)
Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01) (prog-if 80
[Master])
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64
Region 4: I/O ports at fcf0 [size=16]
00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01) (prog-if 00
[UHCI])
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin D routed to IRQ 0
Region 4: I/O ports at fcc0 [disabled] [size=32]
00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 03)
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin ? routed to IRQ 9
00:08.0 FireWire (IEEE 1394): Sony Corporation CXD3222 i.LINK Controller (rev
02) (prog-if 10 [OHCI])
Subsystem: Sony Corporation: Unknown device 8071
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 0
Region 0: Memory at fedff000 (32-bit, non-prefetchable) [disabled]
[size=2K]
Region 1: Memory at fedffc00 (32-bit, non-prefetchable) [disabled]
[size=512]
Expansion ROM at <unassigned> [disabled] [size=64K]
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:09.0 Multimedia audio controller: Yamaha Corporation YMF-744B [DS-1S Audio
Controller] (rev 02)
Subsystem: Sony Corporation: Unknown device 8072
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 64 (1250ns min, 6250ns max)
Interrupt: pin A routed to IRQ 9
Region 0: Memory at fedf0000 (32-bit, non-prefetchable) [size=32K]
Region 1: I/O ports at fc40 [size=64]
Region 2: I/O ports at fcec [size=4]
Capabilities: [50] Power Management version 1
Flags: PMEClk- DSI- D1- D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0a.0 Communication controller: CONEXANT: Unknown device 2443 (rev 01)
Subsystem: Sony Corporation: Unknown device 8075
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 9
Region 0: Memory at fede0000 (32-bit, non-prefetchable) [disabled]
[size=64K]
Region 1: I/O ports at fce0 [disabled] [size=8]
Capabilities: [40] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
00:0c.0 CardBus bridge: Ricoh Co Ltd RL5c478 (rev 80)
Subsystem: Sony Corporation: Unknown device 8073
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 168
Interrupt: pin A routed to IRQ 9
Region 0: Memory at 10000000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=02, subordinate=05, sec-latency=176
Memory window 0: 10400000-107ff000 (prefetchable)
Memory window 1: 10800000-10bff000
I/O window 0: 00004000-000040ff
I/O window 1: 00004400-000044ff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
16-bit legacy interface ports at 0001
00:0c.1 CardBus bridge: Ricoh Co Ltd RL5c478 (rev 80)
Subsystem: Sony Corporation: Unknown device 8073
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66Mhz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 168
Interrupt: pin B routed to IRQ 9
Region 0: Memory at 10001000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=06, subordinate=09, sec-latency=176
Memory window 0: 10c00000-10fff000 (prefetchable)
Memory window 1: 11000000-113ff000
I/O window 0: 00004800-000048ff
I/O window 1: 00004c00-00004cff
BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset- 16bInt+ PostWrite+
16-bit legacy interface ports at 0001
01:00.0 VGA compatible controller: Neomagic Corporation: Unknown device 0016
(rev 10) (prog-if 00 [VGA])
Subsystem: Sony Corporation: Unknown device 8088
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B+
Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 128 (4000ns min, 63750ns max)
Interrupt: pin A routed to IRQ 9
Region 0: Memory at fc000000 (32-bit, prefetchable) [size=32M]
Region 1: Memory at fe800000 (32-bit, non-prefetchable) [size=4M]
Region 2: Memory at fec00000 (32-bit, non-prefetchable) [size=1M]
Capabilities: [d0] AGP version 1.0
Status: RQ=7 SBA+ 64bit- FW- Rate=x1
Command: RQ=0 SBA- AGP- 64bit- FW- Rate=<none>
Capabilities: [dc] Power Management version 1
Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
[7.6.] SCSI information (from /proc/scsi/scsi)
Non SCSI system.
--
Bob Tanner <tanner@real-time.com> | Phone : (952)943-8700
http://www.mn-linux.org, Minnesota, Linux | Fax : (952)943-8500
Key fingerprint = 6C E9 51 4F D5 3E 4C 66 62 A9 10 E5 35 85 39 D9
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: PROBLEM: cat /proc/ioports Segmentation faults
2001-10-11 3:34 PROBLEM: cat /proc/ioports Segmentation faults Bob Tanner
@ 2001-10-13 0:29 ` Randy.Dunlap
0 siblings, 0 replies; 2+ messages in thread
From: Randy.Dunlap @ 2001-10-13 0:29 UTC (permalink / raw)
To: tanner; +Cc: linux-kernel
Bob-
Have you tried 2.4.12?
Does anyone know if this was a fluke in 2.4.10
or a real problem? I've yet to try 2.4.12.
Oops occurred in vsnprintf() -- actually in the inline func.
"strnlen()" (the only one in the vsnprintf function).
string size is negative and the cmp to -1 won't happen
because it's already -2 (in edx).
~Randy
Bob Tanner wrote:
>
> [1.] One line summary of the problem:
> cat /proc/ioports seg faults
>
> [2.] Full description of the problem/report:
> Upgraded from 2.4.10 to 2.4.11, during troubleshooting a usb problem, I was
> cat-ing /proc/interrupts and /proc/ioports. The last cat to /proc/ioports seg
> faulted and syslog says this:
>
> Oct 10 23:22:51 transmuter kernel: Unable to handle kernel paging request at
> virtual address c883a769
> Oct 10 23:22:51 transmuter kernel: printing eip:
> Oct 10 23:22:51 transmuter kernel: c021fb5b
> Oct 10 23:22:51 transmuter kernel: *pde = 07f9d067
> Oct 10 23:22:51 transmuter kernel: *pte = 00000000
> Oct 10 23:22:51 transmuter kernel: Oops: 0000
> Oct 10 23:22:51 transmuter kernel: CPU: 0
> Oct 10 23:22:51 transmuter kernel: EIP: 0010:[vsnprintf+523/1056] Not
> tainted
> Oct 10 23:22:51 transmuter kernel: EFLAGS: 00010297
> Oct 10 23:22:51 transmuter kernel: eax: c883a769 ebx: c4e29297 ecx: c883a769
> edx: fffffffe
> Oct 10 23:22:51 transmuter kernel: esi: ffffffff edi: c71bfec8 ebp: ffffffff
> esp: c71bfe70
> Oct 10 23:22:51 transmuter kernel: ds: 0018 es: 0018 ss: 0018
> Oct 10 23:22:51 transmuter kernel: Process cat (pid: 1353, stackpage=c71bf000)
> Oct 10 23:22:51 transmuter kernel: Stack: 00000000 ffffffff 0000000a c1204e80
> c4e29289 00000006 c4e2a000 c021fda6
> Oct 10 23:22:51 transmuter kernel: c4e29289 3b1d6d77 c022bc46 c71bfebc
> c021fdc4 c4e29289 c022bc35 c71bfebc
> Oct 10 23:22:51 transmuter kernel: c011a43b c4e29289 c022bc35 0000fcc0
> 0000fcdf c883a769 c12114c8 c4e29289
> Oct 10 23:22:51 transmuter kernel: Call Trace: [vsprintf+22/32] [sprintf+20/32]
> [do_resource_list+75/128] [do_resource_list+107/128] [get_resource_list+49/64]
> Oct 10 23:22:51 transmuter kernel: [ioports_read_proc+46/96]
> [proc_file_read+206/400] [sys_read+150/208] [system_call+51/56]
> Oct 10 23:22:51 transmuter kernel:
> Oct 10 23:22:51 transmuter kernel: Code: 80 38 00 74 07 40 4a 83 fa ff 75 f4 29
> c8 f6 04 24 10 89 c6
>
> [3.] Keywords (i.e., modules, networking, kernel):
> # lsmod
> Module Size Used by
> 3c574_cs 8768 1
> ppp_async 6160 0 (autoclean) (unused)
> ppp_generic 17168 0 (autoclean) [ppp_async]
> slhc 4576 0 (autoclean) [ppp_generic]
> agpgart 28448 0 (unused)
> ymfpci 40704 0
> uart401 6096 0 [ymfpci]
> sound 54400 0 [uart401]
> soundcore 3568 4 [ymfpci sound]
> ac97_codec 9264 0 [ymfpci]
>
> [4.] Kernel version (from /proc/version):
> # cat /proc/version
> Linux version 2.4.11 (root@transmuter.real-time.com) (gcc version 2.96 20000731
> (Red Hat Linux 7.1 2.96-85)) #1 Wed Oct 10 22:51:43 CDT 2001
>
> [5.] Output of Oops.. message (if applicable) with symbolic information
> resolved (see Documentation/oops-tracing.txt)
> ksymoops 2.3.4 on i686 2.4.11. Options used
> -V (default)
> -k /proc/ksyms (default)
> -l /proc/modules (default)
> -o /lib/modules/2.4.11/ (default)
> -m /usr/src/linux/System.map (default)
>
> Warning: You did not tell me where to find symbol information. I will
> assume that the log matches the kernel and modules that are running
> right now and I'll use the default options above for symbol resolution.
> If the current kernel and/or modules do not match the log, you can get
> more accurate output by telling me the kernel version and where to find
> map, modules, ksyms etc. ksymoops -h explains the options.
>
> Warning (compare_maps): mismatch on symbol _ctype , ksyms_base says c027ec14,
> System.map says c027ebf4. Ignoring ksyms_base entry
...similar removed...
> ac97_codec: AC97 Audio codec, id: 0x414b:0x4d02 (Asahi Kasei AK4543)
> 3c574_cs.c v1.08 9/24/98 Donald Becker/David Hinds, becker@scyld.com.
> Unable to handle kernel paging request at virtual address c883a769
> c021fb5b
> *pde = 07f9d067
> Oops: 0000
> CPU: 0
> EIP: 0010:[<c021fb5b>] Not tainted
> Using defaults from ksymoops -t elf32-i386 -a i386
> EFLAGS: 00010297
> eax: c883a769 ebx: c4e29297 ecx: c883a769 edx: fffffffe
> esi: ffffffff edi: c71bfec8 ebp: ffffffff esp: c71bfe70
> ds: 0018 es: 0018 ss: 0018
> Process cat (pid: 1353, stackpage=c71bf000)
> Stack: 00000000 ffffffff 0000000a c1204e80 c4e29289 00000006 c4e2a000 c021fda6
> c4e29289 3b1d6d77 c022bc46 c71bfebc c021fdc4 c4e29289 c022bc35 c71bfebc
> c011a43b c4e29289 c022bc35 0000fcc0 0000fcdf c883a769 c12114c8 c4e29289
> Call Trace: [<c021fda6>] [<c021fdc4>] [<c011a43b>] [<c011a45b>] [<c011a4a1>]
> [<c014d7fe>] [<c014b5be>] [<c0131406>] [<c0106ce7>]
> Code: 80 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 f6 04 24 10 89 c6
>
> >>EIP; c021fb5b <vsnprintf+20b/420> <=====
> Trace; c021fda6 <vsprintf+16/20>
> Trace; c021fdc4 <sprintf+14/20>
> Trace; c011a43b <do_resource_list+4b/80>
> Trace; c011a45b <do_resource_list+6b/80>
> Trace; c011a4a1 <get_resource_list+31/40>
> Trace; c014d7fe <ioports_read_proc+2e/60>
> Trace; c014b5be <proc_file_read+ce/190>
> Trace; c0131406 <sys_read+96/d0>
> Trace; c0106ce7 <system_call+33/38>
> Code; c021fb5b <vsnprintf+20b/420>
> 00000000 <_EIP>:
> Code; c021fb5b <vsnprintf+20b/420> <=====
> 0: 80 38 00 cmpb $0x0,(%eax) <=====
> Code; c021fb5e <vsnprintf+20e/420>
> 3: 74 07 je c <_EIP+0xc> c021fb67
> <vsnprintf+217/420>
> Code; c021fb60 <vsnprintf+210/420>
> 5: 40 inc %eax
> Code; c021fb61 <vsnprintf+211/420>
> 6: 4a dec %edx
> Code; c021fb62 <vsnprintf+212/420>
> 00000000 <_EIP>:
> Code; c021fb5b <vsnprintf+20b/420> <=====
> 0: 80 38 00 cmpb $0x0,(%eax) <=====
> Code; c021fb5e <vsnprintf+20e/420>
> 3: 74 07 je c <_EIP+0xc> c021fb67
> <vsnprintf+217/420>
> Code; c021fb60 <vsnprintf+210/420>
> 5: 40 inc %eax
> Code; c021fb61 <vsnprintf+211/420>
> 6: 4a dec %edx
> Code; c021fb62 <vsnprintf+212/420>
> 7: 83 fa ff cmp $0xffffffff,%edx
> Code; c021fb65 <vsnprintf+215/420>
> a: 75 f4 jne 0 <_EIP>
> Code; c021fb67 <vsnprintf+217/420>
> c: 29 c8 sub %ecx,%eax
> Code; c021fb69 <vsnprintf+219/420>
> e: f6 04 24 10 testb $0x10,(%esp,1)
> Code; c021fb6d <vsnprintf+21d/420>
> 12: 89 c6 mov %eax,%esi
>
> 53 warnings issued. Results may not be reliable.
>
> [6.] A small shell script or example program which triggers the
> problem (if possible)
>
> [7.] Environment
> [7.1.] Software (add the output of the ver_linux script here)
> Linux transmuter.real-time.com 2.4.11 #1 Wed Oct 10 22:51:43 CDT 2001 i686
> unknown
...
> [7.2.] Processor information (from /proc/cpuinfo):
> # cat /proc/cpuinfo
...
> [7.3.] Module information (from /proc/modules):
> # cat /proc/modules
...
> [7.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
>
> Can't give you /proc/ioports, it seg faults.
>
> # cat /proc/iomem
...
> [7.5.] PCI information ('lspci -vvv' as root)
...
> [7.6.] SCSI information (from /proc/scsi/scsi)
>
> Non SCSI system.
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