Date: Tue, 22 Aug 2000 00:13:00 +0100 (BST) From: joe@pavilion.net To: FreeBSD-gnats-submit@freebsd.org Subject: kern/20765: Crash in bdgtakeifaces when performing kldunload if_tap.ko Message-ID: <20000821231300.E9A1A9B07@genius.systems.pavilion.net>
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>Number: 20765
>Category: kern
>Synopsis: Crash in bdgtakeifaces when performing kldunload if_tap.ko
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Aug 21 16:20:05 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator: Joe Karthauser
>Release: FreeBSD 5.0-CURRENT i386
>Organization:
FreeBSD
>Environment:
% dmesg
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD 5.0-CURRENT #106: Mon Aug 21 09:09:56 BST 2000
joe@genius.systems.pavilion.net:/usr/obj/usr/src/sys/GENIUS
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium II/Pentium II Xeon/Celeron (397.90-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x66d Stepping = 13
Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR>
real memory = 201261056 (196544K bytes)
avail memory = 191975424 (187476K bytes)
Preloaded elf kernel "kernel" at 0xc034c000.
Pentium Pro MTRR support enabled
md0: Malloc disk
apm0: <APM BIOS> on motherboard
apm0: found APM BIOS v1.2, connected at v1.2
npx0: <math processor> on motherboard
npx0: INT 16 interface
pcib0: <Intel 82443BX host to PCI bridge (AGP disabled)> on motherboard
pci0: <PCI bus> on pcib0
pci0: <Intel 82443BX host to PCI bridge (AGP disabled)> at 0.0
isab0: <Intel 82371AB PCI to ISA bridge> at device 7.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 ATA33 controller> port 0xfcd0-0xfcdf at device 7.1 on pci0
ata0: at 0x1f0 irq 14 on atapci0
ata1: at 0x170 irq 15 on atapci0
pci0: <Intel 82371AB/EB (PIIX4) USB controller> at 7.2 irq 9
pci0: <Intel 82371AB Power management controller> at 7.3
pci0: <NeoMagic MagicMedia 256AV SVGA controller> at 8.0 irq 9
pcm0: <NeoMagic 256AV> mem 0xfec00000-0xfecfffff,0xfe000000-0xfe3fffff irq 9 at device 8.1 on pci0
pci0: <Sony CXD1947A FireWire Host Controller> at 9.0 irq 9
pcic-pci0: <Ricoh RL5C478 PCI-CardBus Bridge> at device 10.0 on pci0
pcic-pci1: <Ricoh RL5C478 PCI-CardBus Bridge> at device 10.1 on pci0
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> flags 0x1 irq 1 on atkbdc0
kbd0 at atkbd0
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: model GlidePoint, device ID 0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
pcic0: <Intel i82365> at port 0x3e0 iomem 0xd0000 irq 10 on isa0
pcic0: management irq 10
pccard0: <PC Card bus -- kludge version> on pcic0
pccard1: <PC Card bus -- kludge version> on pcic0
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1: configured irq 3 not in bitmap of probed irqs 0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/8 bytes threshold
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
unknown: <PNP0303> can't assign resources
unknown: <PNP0700> can't assign resources
unknown: <PNP0401> can't assign resources
unknown: <PNP0501> can't assign resources
unknown: <PNP0f13> can't assign resources
BRIDGE 990810, have 7 interfaces
pccard: card inserted, slot 1
ata1-slave: ata_command: timeout waiting for intr
ata1-slave: identify failed
ad0: 19077MB <IBM-DJSA-220> [38760/16/63] at ata0-master using UDMA33
acd0: DVD-ROM <TOSHIBA DVD-ROM SD-C2202> at ata1-master using UDMA33
Mounting root from ufs:/dev/ad0s2a
WARNING: / was not properly dismounted
xe0 at port 0x240-0x24f iomem 0xd0000-0xd0fff irq 3 slot 1 on pccard1
xe0: Xircom CE3, bonding version 0x45, 100Mbps capable
xe0: DingoID = 0, RevisionID = 0, VendorID = 0
xe0: Ethernet address 00:80:c7:f5:24:e0
BRIDGE 990810, have 8 interfaces
-- index 8 type 6 phy 0 addrl 6 addr 00.80.c7.f5.24.e0
/dev/vmmon: Module vmmon: registered with major=200 minor=0 tag=$Name: build-570 $
/dev/vmmon: Module vmmon: initialized
BRIDGE 990810, have 9 interfaces
-- index 8 xe0:1 type 6 phy 0 addrl 6 addr 00.80.c7.f5.24.e0
-- index 9 type 6 phy 0 addrl 6 addr 00.bd.90.62.00.01
BRIDGE 990810, have 9 interfaces
-- index 8 xe0:1 type 6 phy 0 addrl 6 addr 00.80.c7.f5.24.e0
-- index 9 vmnet1:1 type 6 phy 0 addrl 6 addr 00.bd.90.62.00.01
xe0: promiscuous mode enabled
>Description:
My machine crashes when I:
# kldunload if_tap.ko
In normal practice this gets tickled when I try and suspend
the machine.
>How-To-Repeat:
See above.
>Fix:
No fix.
gdb -k:
genius# gdb -k kernel.debug /var/crash/vmcore.3
GNU gdb 4.18
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "i386-unknown-freebsd"...
IdlePTD 3530752
initial pcb at 2cc880
panicstr: from debugger
panic messages:
---
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x34
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01ac9a7
stack pointer = 0x10:0xcc825e98
frame pointer = 0x10:0xcc825eb4
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 3169 (kldunload)
interrupt mask = net
panic: from debugger
panic: from debugger
Uptime: 2h44m31s
/dev/vmmon: Module vmmon: unloaded
dumping to dev #ad/0x30001, offset 630912
dump ata0: resetting devices .. done
191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
---
#0 boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:303
303 dumppcb.pcb_cr3 = rcr3();
(kgdb) bt
#0 boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:303
#1 0xc016f0f9 in panic (fmt=0xc02577d4 "from debugger")
at /usr/src/sys/kern/kern_shutdown.c:553
#2 0xc0131121 in db_panic (addr=-1071986265, have_addr=0, count=-1,
modif=0xcc825d04 "") at /usr/src/sys/ddb/db_command.c:433
#3 0xc01310c1 in db_command (last_cmdp=0xc0287ef0, cmd_table=0xc0287d50,
aux_cmd_tablep=0xc02c691c) at /usr/src/sys/ddb/db_command.c:333
#4 0xc0131186 in db_command_loop () at /usr/src/sys/ddb/db_command.c:455
#5 0xc0133343 in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_trap.c:71
#6 0xc0233e62 in kdb_trap (type=12, code=0, regs=0xcc825e58)
at /usr/src/sys/i386/i386/db_interface.c:158
#7 0xc023feac in trap_fatal (frame=0xcc825e58, eva=52)
at /usr/src/sys/i386/i386/trap.c:946
#8 0xc023fb85 in trap_pfault (frame=0xcc825e58, usermode=0, eva=52)
at /usr/src/sys/i386/i386/trap.c:844
#9 0xc023f6fb in trap (frame={tf_fs = 16, tf_es = -863895536,
tf_ds = -1072234480, tf_edi = 0, tf_esi = -1054286120,
tf_ebp = -863871308, tf_isp = -863871356, tf_ebx = -1055557504,
tf_edx = 0, tf_ecx = 0, tf_eax = 9, tf_trapno = 12, tf_err = 0,
tf_eip = -1071986265, tf_cs = 8, tf_eflags = 66199,
tf_esp = -1054073344, tf_ss = -1054073344})
at /usr/src/sys/i386/i386/trap.c:443
#10 0xc01ac9a7 in bdgtakeifaces () at /usr/src/sys/net/bridge.c:474
#11 0xc01af02d in ether_ifdetach (ifp=0xc12c1e00, bpf=1)
at /usr/src/sys/net/if_ethersubr.c:693
#12 0xc12bc47d in ?? ()
#13 0xc016b4d9 in module_unload (mod=0xc12a6680)
at /usr/src/sys/kern/kern_module.c:195
#14 0xc0168392 in linker_file_unload (file=0xc12a8900)
at /usr/src/sys/kern/kern_linker.c:449
#15 0xc0168a65 in kldunload (p=0xcc762380, uap=0xcc825f80)
at /usr/src/sys/kern/kern_linker.c:747
#16 0xc0240185 in syscall2 (frame={tf_fs = 47, tf_es = 47, tf_ds = 47,
tf_edi = 7, tf_esi = -1077936842, tf_ebp = -1077937148,
tf_isp = -863871020, tf_ebx = 0, tf_edx = 0, tf_ecx = 134560192,
tf_eax = 305, tf_trapno = 12, tf_err = 2, tf_eip = 134514116,
tf_cs = 31, tf_eflags = 663, tf_esp = -1077938248, tf_ss = 47})
at /usr/src/sys/i386/i386/trap.c:1150
#17 0xc02347a5 in Xint0x80_syscall ()
#18 0x8048139 in ?? ()
(kgdb) l /usr/src/sys/net/bridge.c:474
469 *bridge_cfg = '\0';
470
471 printf("BRIDGE 990810, have %d interfaces\n", if_index);
472 for (i = 0 , ifp = ifnet.tqh_first ; i < if_index ;
473 i++, ifp = ifp->if_link.tqe_next)
474 if (ifp->if_type == IFT_ETHER) { /* ethernet ? */
475 bp = &ifp2sc[ifp->if_index] ;
476 ac = (struct arpcom *)ifp;
477 sprintf(bridge_cfg + strlen(bridge_cfg),
478 "%s%d:1,", ifp->if_name, ifp->if_unit);
>Release-Note:
>Audit-Trail:
>Unformatted:
>> now xe0 promisc ON if_flags 0xffff8943 bdg_flags 0x5
vmnet1: promiscuous mode enabled
>> now vmnet1 promisc ON if_flags 0xffff8943 bdg_flags 0x5
xe0: watchdog timeout; resetting card
pid 481 (wmglobe), uid 100: exited on signal 10 (core dumped)
pid 483 (lavaps), uid 100: exited on signal 6
cd9660: Joliet Extension
BRIDGE 990810, have 10 interfaces
-- index 8 xe0:1 type 6 phy 0 addrl 6 addr 00.80.c7.f5.24.e0
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x34
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc01ac9a7
stack pointer = 0x10:0xcc825e98
frame pointer = 0x10:0xcc825eb4
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 3169 (kldunload)
interrupt mask = net
panic: from debugger
panic: from debugger
Uptime: 2h44m31s
/dev/vmmon: Module vmmon: unloaded
dumping to dev #ad/0x30001, offset 630912
dump ata0: resetting devices .. done
191 190 189 188 187 186 185 184 183 182 181 180 179 178 177 176 175 174 173 172 171 170 169 168 167 166 165 164 163 162 161 160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 12 8 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 succeeded
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
# kldstat
Id Refs Address Size Name
1 8 0xc0100000 24a3d0 kernel
2 1 0xc11a6000 c000 msdos.ko
3 1 0xc1365000 4000 logo_saver.ko
4 3 0xc136f000 11000 linux.ko
5 1 0xc13b2000 2000 rtc.ko
6 1 0xc13eb000 9000 vmmon_up.ko
7 1 0xc13f6000 4000 if_tap.ko
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