[BUG()] IrDA in 2.4.16 + preempt

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* [BUG()] IrDA in 2.4.16 + preempt
@ 2001-12-14 10:31 Pawel Kot
  2001-12-17  9:28 ` Martin Diehl
  0 siblings, 1 reply; 10+ messages in thread
From: Pawel Kot @ 2001-12-14 10:31 UTC (permalink / raw)
  To: Dag Brattli, linux-kernel

Hi,

I found an annoying problem with irda on 2.4.16.
When I remove irlan module I get sementation fault:
root@blurp:~# rmmod irlan
Dec 14 02:27:29 blurp kernel: irlan_init()
Dec 14 02:27:29 blurp kernel: irlmp_register_client()
Dec 14 02:27:29 blurp kernel: irlan_register_netdev()
Dec 14 02:27:35 blurp kernel: kernel BUG at slab.c:1200!
Dec 14 02:27:35 blurp kernel: invalid operand: 0000
Dec 14 02:27:35 blurp kernel: CPU:    0
Dec 14 02:27:35 blurp kernel: EIP:    0010:[kmem_extra_free_checks+81/140] Not tainted
Dec 14 02:27:35 blurp kernel: EFLAGS: 00010082
Dec 14 02:27:35 blurp kernel: eax: 0000001b   ebx: c14055f0   ecx: ffffffe2 edx: 000017eb
Dec 14 02:27:35 blurp kernel: esi: 00000000   edi: cf2eb974   ebp: cc4d9030 esp: cc045ebc
Dec 14 02:27:35 blurp kernel: ds: 0018   es: 0018   ss: 0018
Dec 14 02:27:35 blurp kernel: Process rmmod (pid: 110, stackpage=cc045000)
Dec 14 02:27:35 blurp kernel: Stack: c024a8ac 000004b0 cf2eb974 cc4d9030 cc4d9030 c14055f0 c012d3c2 c14055f0
Dec 14 02:27:35 blurp kernel:        cf2eb974 cc4d9030 cc4d9030 cc4d9030 ffffe000 00000286 ffffe000 00000400
Dec 14 02:27:35 blurp kernel:        cc4d9030 00000286 c01eab85 cc4d9030 cc4d9030 c01ead4f cc4d9030 cc4d9030
Dec 14 02:27:35 blurp kernel: Call Trace: [kfree+450/576] [netdev_finish_unregister+145/152] [unregister_netdevice+451/632] [unregister_netdev+16/40] [<d285b490>]
Dec 14 02:27:35 blurp kernel:    [<d285b34c>] [hashbin_delete+107/152] [<d285b160>] [<d285b34c>] [<d28602e3>] [<d285ccdd>]
Dec 14 02:27:36 blurp kernel:    [free_module+23/192] [sys_delete_module+300/732] [system_call+51/56]
Dec 14 02:27:36 blurp kernel:
Dec 14 02:27:36 blurp kernel: Code: 0f 0b 83 c4 08 8b 5f 14 83 fb ff 74 27 8d b6 00 00 00 00 39
[and segmentation fault]

And then the module is not removed in fact:
root@blurp:~# lsmod
Module                  Size  Used by
irlan                      0   0  (deleted)
root@blurp:~# insmod irlan
Using /lib/modules/2.4.16preempt/kernel/net/irda/irlan/irlan.o
insmod: a module named irlan already exists

Moreover, some processes go into a 'D' state. Eg. ifconfig, irattach.

Additionally, when I try to login an the other console, I get bug:
Dec 14 02:28:52 blurp kernel:  kernel BUG at slab.c:1243!
Dec 14 02:28:52 blurp kernel: invalid operand: 0000
Dec 14 02:28:52 blurp kernel: CPU:    0
Dec 14 02:28:52 blurp kernel: EIP:    0010:[kmalloc+346/504]    Not tainted
Dec 14 02:28:52 blurp kernel: EFLAGS: 00010086
Dec 14 02:28:52 blurp kernel: eax: 0000001b   ebx: c14055f0   ecx: ffffffe5 edx: 00001b5b
Dec 14 02:28:52 blurp kernel: esi: cc4d9400   edi: cc4d942f   ebp: cc4d942f esp: ccc41f30
Dec 14 02:28:52 blurp kernel: ds: 0018   es: 0018   ss: 0018
Dec 14 02:28:52 blurp kernel: Process bash (pid: 94, stackpage=ccc41000)
Dec 14 02:28:52 blurp kernel: Stack: c024a8ac 000004db 00000100 fffffff4 000000ff c15181ec 00000400 00000246
Dec 14 02:28:52 blurp kernel:        c0149d19 00000400 000001f0 c0149e0a 00000100 000000ff c15181ec 00000001
Dec 14 02:28:52 blurp kernel:        c15181ec 00000003 ccc40000 c15181ec bffffd12 c0141b46 c15181ec 000000ff
Dec 14 02:28:52 blurp kernel: Call Trace: [alloc_fd_array+25/52] [expand_fd_array+142/384] [expand_files+54/68] [sys_dup2+125/324] [system_call+51/56]
Dec 14 02:28:52 blurp kernel:
Dec 14 02:28:52 blurp kernel: Code: 0f 0b 83 c4 08 90 f6 43 1d 04 74 4e b8 a5 c2 0f 17 87 06 3d

There's only a problem with a first login. But I suppose it is a consequence
of the first bug.

I can reproduce it.

pkot
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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-14 10:31 [BUG()] IrDA in 2.4.16 + preempt Pawel Kot
@ 2001-12-17  9:28 ` Martin Diehl
  2001-12-17 22:20   ` Pawel Kot
  2001-12-17 22:45   ` Jean Tourrilhes
  0 siblings, 2 replies; 10+ messages in thread
From: Martin Diehl @ 2001-12-17  9:28 UTC (permalink / raw)
  To: Pawel Kot; +Cc: Dag Brattli, Jean Tourrilhes, linux-kernel


[Jean added to CC]

On Fri, 14 Dec 2001, Pawel Kot wrote:

> I found an annoying problem with irda on 2.4.16.
> When I remove irlan module I get sementation fault:
> root@blurp:~# rmmod irlan
> Dec 14 02:27:35 blurp kernel: kernel BUG at slab.c:1200!
> Dec 14 02:27:35 blurp kernel: invalid operand: 0000
> Dec 14 02:27:35 blurp kernel: CPU:    0
> Dec 14 02:27:35 blurp kernel: EIP:    0010:[kmem_extra_free_checks+81/140] Not tainted
[...]
> Dec 14 02:27:35 blurp kernel: Process rmmod (pid: 110, stackpage=cc045000)
[..]
> Dec 14 02:27:35 blurp kernel: Call Trace:
 [kfree+450/576]
 [netdev_finish_unregister+145/152]
 [unregister_netdevice+451/632]
 [unregister_netdev+16/40]

Seems some inconsistency in the way how the irlan netdev is handled:
having NETIF_F_DYNALLOC set for a netdev which is not allocated as an
independent object doesn't seem to be a good idea to me ;-)

The patch below simply removes NETIF_F_DYNALLOC just before calling
unregister_netdev() und should fix the issue. It's untested however,
since I'm unable to reproduce the Oops on UP without preempt (but it
should be there as well, due to ipfrag_time for example). At least it
compiles and doesn't do any harm to me.

IMHO, retiring dynalloc is just some sort of band-aid because I do
believe, using it would be a good idea - but would need some more
changes for irlan.

Btw., I'm not sure about the status of irlan - I'm only using ppp over
ircomm or irnet.

HTH
Martin

-----------------------------

--- linux-2.4.16/net/irda/irlan/irlan_common.c	Fri Oct 12 22:04:30 2001
+++ v2.4.16-md/net/irda/irlan/irlan_common.c	Mon Dec 17 10:01:53 2001
@@ -282,6 +282,18 @@
 	while ((skb = skb_dequeue(&self->client.txq)))
 		dev_kfree_skb(skb);
 
+	/* NETIF_F_DYNALLOC feature was set by irlan_eth_init() and would
+	 * cause the unregister_netdev() to do asynch completion _and_
+	 * kfree self->dev afterwards. Which is really bad because the
+	 * netdevice was not allocated separately but is embedded in
+	 * our control block and therefore gets freed with *self.
+	 * Probably there are better solutions, but simply removing
+	 * the feature before unregister should solve the Oops.
+	 * Note however, this may cause unregister_netdev() to block
+	 * until the refcount decreases to zero - which might take
+	 * some time, say /proc/sys/net/ipv4/ipfrag_time for example.
+	 */
+	self->dev.features &= ~NETIF_F_DYNALLOC;
 	unregister_netdev(&self->dev);
 	
 	self->magic = 0;



^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-17  9:28 ` Martin Diehl
@ 2001-12-17 22:20   ` Pawel Kot
  2001-12-17 23:19     ` Pawel Kot
  2001-12-17 22:45   ` Jean Tourrilhes
  1 sibling, 1 reply; 10+ messages in thread
From: Pawel Kot @ 2001-12-17 22:20 UTC (permalink / raw)
  To: Martin Diehl; +Cc: Dag Brattli, Jean Tourrilhes, linux-kernel

On Mon, 17 Dec 2001, Martin Diehl wrote:

> On Fri, 14 Dec 2001, Pawel Kot wrote:
>
> > I found an annoying problem with irda on 2.4.16.
> > When I remove irlan module I get sementation fault:
> > root@blurp:~# rmmod irlan
> > Dec 14 02:27:35 blurp kernel: kernel BUG at slab.c:1200!
> > Dec 14 02:27:35 blurp kernel: invalid operand: 0000
> > Dec 14 02:27:35 blurp kernel: CPU:    0
> > Dec 14 02:27:35 blurp kernel: EIP:    0010:[kmem_extra_free_checks+81/140] Not tainted
> [...]
> > Dec 14 02:27:35 blurp kernel: Process rmmod (pid: 110, stackpage=cc045000)
> [..]
> > Dec 14 02:27:35 blurp kernel: Call Trace:
>  [kfree+450/576]
>  [netdev_finish_unregister+145/152]
>  [unregister_netdevice+451/632]
>  [unregister_netdev+16/40]
>
> Seems some inconsistency in the way how the irlan netdev is handled:
> having NETIF_F_DYNALLOC set for a netdev which is not allocated as an
> independent object doesn't seem to be a good idea to me ;-)
>
> The patch below simply removes NETIF_F_DYNALLOC just before calling
> unregister_netdev() und should fix the issue. It's untested however,
> since I'm unable to reproduce the Oops on UP without preempt (but it
> should be there as well, due to ipfrag_time for example). At least it
> compiles and doesn't do any harm to me.

It didn't help. Still the same BUGs(). Moreover: it seems that every
network connected process goes into D state. It happens with ifconfig and
ppd for sure.

> Btw., I'm not sure about the status of irlan - I'm only using ppp over
> ircomm or irnet.

In fact I discovered it accidently. I have loaded irlan instead of ircomm
when trying to firnd the reason why connect() on /dev/ircomm0 gives my "No
route to host" every time (with no success) although discivery succeeds.

I'll give it a try without the preempt patch.

pkot
-- 
mailto:pkot@linuxnews.pl :: mailto:pkot@slackware.pl
http://kt.linuxnews.pl/ :: Kernel Traffic po polsku
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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-17 22:20   ` Pawel Kot
@ 2001-12-17 23:19     ` Pawel Kot
  0 siblings, 0 replies; 10+ messages in thread
From: Pawel Kot @ 2001-12-17 23:19 UTC (permalink / raw)
  To: Martin Diehl; +Cc: Dag Brattli, Jean Tourrilhes, linux-kernel, linux-irda

[-- Attachment #1: Type: TEXT/PLAIN, Size: 3497 bytes --]

On Mon, 17 Dec 2001, Pawel Kot wrote:

> I'll give it a try without the preempt patch.

The same on 2.4.16-vanilla. The bug report again (This time CCed to
linux-irda ml):

root@blurp:~# rmmod irlan
Causes segmentation fault and:
Dec 18 00:13:44 blurp kernel: irlan_init()
Dec 18 00:13:44 blurp kernel: irlan_register_netdev()
Dec 18 00:13:48 blurp kernel: kernel BUG at slab.c:1198!
Dec 18 00:13:48 blurp kernel: invalid operand: 0000
Dec 18 00:13:48 blurp kernel: CPU:    0
Dec 18 00:13:48 blurp kernel: EIP:    0010:[sys_msync+5/256]    Not tainted
Dec 18 00:13:48 blurp kernel: EFLAGS: 00010086
Dec 18 00:13:48 blurp kernel: eax: 0000001b   ebx: c14055f0   ecx: c02867c8 edx: 000017c6
Dec 18 00:13:48 blurp kernel: esi: 00000000   edi: cf9b6974   ebp: ce30f030 esp: ce27decc
Dec 18 00:13:48 blurp kernel: ds: 0018   es: 0018   ss: 0018
Dec 18 00:13:48 blurp kernel: Process rmmod (pid: 110, stackpage=ce27d000)
Dec 18 00:13:48 blurp kernel: Stack: c0235e0c 000004ae cf9b6974 ce30f030 ce30f030 c14055f0 c0129552 c14055f0
Dec 18 00:13:48 blurp kernel:        cf9b6974 ce30f030 ce30f030 ce30f310 ce30f000 ce30f030 ce30f000 00000400
Dec 18 00:13:48 blurp kernel:        ce30f030 00000286 c01de0d5 ce30f030 ce30f030 c01de213 ce30f030 ce30f030
Dec 18 00:13:48 blurp kernel: Call Trace: [mincore_page+10/164] [fbcon_cfb8_bmove+225/612] [fbcon_cfb8_bmove+543/612] [getkeycode+12/16] [<d285b449>]
Dec 18 00:13:48 blurp kernel:    [<d285b34c>] [unix_sock_destructor+127/304] [<d285b160>] [<d285b34c>] [<d28601a3>] [<d285cc5d>]
Dec 18 00:13:48 blurp kernel:    [register_console+203/392] [panic+55/224] [do_signal+347/672]
Dec 18 00:13:48 blurp kernel:
Dec 18 00:13:48 blurp kernel: Code: 0f 0b 83 c4 08 8b 5f 14 83 fb ff 74 27 8d b6 00 00 00 00 39

Now I log on to the other console:
Dec 18 00:14:17 blurp kernel:  kernel BUG at slab.c:1241!
Dec 18 00:14:17 blurp kernel: invalid operand: 0000
Dec 18 00:14:17 blurp kernel: CPU:    0
Dec 18 00:14:17 blurp kernel: EIP:    0010:[madvise_fixup_middle+38/404] Not tainted
Dec 18 00:14:17 blurp kernel: EFLAGS: 00010082
Dec 18 00:14:17 blurp kernel: eax: 0000001b   ebx: c14055f0   ecx: c02867c8 edx: 00001b36
Dec 18 00:14:17 blurp kernel: esi: ce30f400   edi: ce30f42f   ebp: ce30f42f esp: c1517ef8
Dec 18 00:14:17 blurp kernel: ds: 0018   es: 0018   ss: 0018
Dec 18 00:14:17 blurp kernel: Process bash (pid: 93, stackpage=c1517000)
Dec 18 00:14:17 blurp kernel: Stack: c0235e0c 000004d9 00000100 fffffff4 fffffff4 c1517fbc 00000400 00000246
Dec 18 00:14:17 blurp kernel:        c0141dc9 00000400 000001f0 c0141e9a 00000100 ce43d57c 00000400 fffffff4
Dec 18 00:14:17 blurp kernel:        c1517fbc c1517fbc 000001a0 00000246 c011469a ce43d57c 000000ff ce214000
Dec 18 00:14:17 blurp kernel: Call Trace: [sys_dup2+181/324] [setfl+30/168] [setscheduler+342/488] [sys_sched_rr_get_interval+190/248] [__switch_to+28/184]
Dec 18 00:14:17 blurp kernel:    [do_signal+347/672]
Dec 18 00:14:17 blurp kernel:
Dec 18 00:14:17 blurp kernel: Code: 0f 0b 83 c4 08 90 f6 43 1d 04 74 4e b8 a5 c2 0f 17 87 06 3d

This happens only *once* (the second BUG()). It is fully reproducable.
Additional behaviour: after rmmod some processes (network related:
ifconfig, pppd gor into D state).

root@blurp:~# lsmod
Module                  Size  Used by
irlan                      0   0  (deleted)

.config attached.

pkot
-- 
mailto:pkot@linuxnews.pl :: mailto:pkot@slackware.pl
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[-- Attachment #2: Type: TEXT/PLAIN, Size: 20182 bytes --]

#
# Automatically generated by make menuconfig: don't edit
#
CONFIG_X86=y
CONFIG_ISA=y
# CONFIG_SBUS is not set
CONFIG_UID16=y

#
# Code maturity level options
#
CONFIG_EXPERIMENTAL=y

#
# Loadable module support
#
CONFIG_MODULES=y
# CONFIG_MODVERSIONS is not set
CONFIG_KMOD=y

#
# Processor type and features
#
# CONFIG_M386 is not set
# CONFIG_M486 is not set
# CONFIG_M586 is not set
# CONFIG_M586TSC is not set
# CONFIG_M586MMX is not set
CONFIG_M686=y
# CONFIG_MPENTIUMIII is not set
# CONFIG_MPENTIUM4 is not set
# CONFIG_MK6 is not set
# CONFIG_MK7 is not set
# CONFIG_MCRUSOE is not set
# CONFIG_MWINCHIPC6 is not set
# CONFIG_MWINCHIP2 is not set
# CONFIG_MWINCHIP3D is not set
# CONFIG_MCYRIXIII is not set
CONFIG_X86_WP_WORKS_OK=y
CONFIG_X86_INVLPG=y
CONFIG_X86_CMPXCHG=y
CONFIG_X86_XADD=y
CONFIG_X86_BSWAP=y
CONFIG_X86_POPAD_OK=y
# CONFIG_RWSEM_GENERIC_SPINLOCK is not set
CONFIG_RWSEM_XCHGADD_ALGORITHM=y
CONFIG_X86_L1_CACHE_SHIFT=5
CONFIG_X86_TSC=y
CONFIG_X86_GOOD_APIC=y
CONFIG_X86_PGE=y
CONFIG_X86_USE_PPRO_CHECKSUM=y
# CONFIG_TOSHIBA is not set
CONFIG_MICROCODE=m
CONFIG_X86_MSR=m
CONFIG_X86_CPUID=m
CONFIG_NOHIGHMEM=y
# CONFIG_HIGHMEM4G is not set
# CONFIG_HIGHMEM64G is not set
# CONFIG_MATH_EMULATION is not set
CONFIG_MTRR=y
# CONFIG_SMP is not set
CONFIG_X86_UP_IOAPIC=y
CONFIG_X86_IO_APIC=y
CONFIG_X86_LOCAL_APIC=y

#
# General setup
#
CONFIG_NET=y
# CONFIG_VISWS is not set
CONFIG_PCI=y
# CONFIG_PCI_GOBIOS is not set
# CONFIG_PCI_GODIRECT is not set
CONFIG_PCI_GOANY=y
CONFIG_PCI_BIOS=y
CONFIG_PCI_DIRECT=y
CONFIG_PCI_NAMES=y
# CONFIG_EISA is not set
# CONFIG_MCA is not set
# CONFIG_HOTPLUG is not set
# CONFIG_PCMCIA is not set
CONFIG_SYSVIPC=y
CONFIG_BSD_PROCESS_ACCT=y
CONFIG_SYSCTL=y
CONFIG_KCORE_ELF=y
# CONFIG_KCORE_AOUT is not set
# CONFIG_BINFMT_AOUT is not set
CONFIG_BINFMT_ELF=y
# CONFIG_BINFMT_MISC is not set
CONFIG_PM=y
CONFIG_ACPI=y
CONFIG_APM=y
# CONFIG_APM_IGNORE_USER_SUSPEND is not set
# CONFIG_APM_DO_ENABLE is not set
# CONFIG_APM_CPU_IDLE is not set
# CONFIG_APM_DISPLAY_BLANK is not set
CONFIG_APM_RTC_IS_GMT=y
# CONFIG_APM_ALLOW_INTS is not set
CONFIG_APM_REAL_MODE_POWER_OFF=y

#
# Memory Technology Devices (MTD)
#
# CONFIG_MTD is not set

#
# Parallel port support
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CONFIG_PARPORT=y
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CONFIG_PARPORT_PC_SUPERIO=y
# CONFIG_PARPORT_AMIGA is not set
# CONFIG_PARPORT_MFC3 is not set
# CONFIG_PARPORT_ATARI is not set
# CONFIG_PARPORT_SUNBPP is not set
# CONFIG_PARPORT_OTHER is not set
CONFIG_PARPORT_1284=y

#
# Plug and Play configuration
#
CONFIG_PNP=m
CONFIG_ISAPNP=m

#
# Block devices
#
CONFIG_BLK_DEV_FD=y
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# CONFIG_PARIDE is not set
# CONFIG_BLK_CPQ_DA is not set
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# CONFIG_BLK_DEV_DAC960 is not set
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=m
CONFIG_BLK_DEV_RAM_SIZE=4096
# CONFIG_BLK_DEV_INITRD is not set

#
# Multi-device support (RAID and LVM)
#
CONFIG_MD=y
# CONFIG_BLK_DEV_MD is not set
# CONFIG_MD_LINEAR is not set
# CONFIG_MD_RAID0 is not set
# CONFIG_MD_RAID1 is not set
# CONFIG_MD_RAID5 is not set
CONFIG_BLK_DEV_LVM=m

#
# Networking options
#
CONFIG_PACKET=y
# CONFIG_PACKET_MMAP is not set
CONFIG_NETLINK=y
CONFIG_RTNETLINK=y
CONFIG_NETLINK_DEV=y
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
CONFIG_FILTER=y
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
# CONFIG_IP_ADVANCED_ROUTER is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_IPIP is not set
# CONFIG_NET_IPGRE is not set
# CONFIG_IP_MROUTE is not set
# CONFIG_ARPD is not set
# CONFIG_INET_ECN is not set
CONFIG_SYN_COOKIES=y

#
#   IP: Netfilter Configuration
#
CONFIG_IP_NF_CONNTRACK=m
CONFIG_IP_NF_FTP=m
CONFIG_IP_NF_QUEUE=m
CONFIG_IP_NF_IPTABLES=m
CONFIG_IP_NF_MATCH_LIMIT=m
CONFIG_IP_NF_MATCH_MAC=m
CONFIG_IP_NF_MATCH_MARK=m
CONFIG_IP_NF_MATCH_MULTIPORT=m
CONFIG_IP_NF_MATCH_TOS=m
CONFIG_IP_NF_MATCH_TCPMSS=m
CONFIG_IP_NF_MATCH_STATE=m
CONFIG_IP_NF_MATCH_UNCLEAN=m
CONFIG_IP_NF_MATCH_OWNER=m
CONFIG_IP_NF_FILTER=m
CONFIG_IP_NF_TARGET_REJECT=m
CONFIG_IP_NF_TARGET_MIRROR=m
CONFIG_IP_NF_NAT=m
CONFIG_IP_NF_NAT_NEEDED=y
CONFIG_IP_NF_TARGET_MASQUERADE=m
CONFIG_IP_NF_TARGET_REDIRECT=m
CONFIG_IP_NF_NAT_FTP=m
CONFIG_IP_NF_MANGLE=m
CONFIG_IP_NF_TARGET_TOS=m
CONFIG_IP_NF_TARGET_MARK=m
CONFIG_IP_NF_TARGET_LOG=m
CONFIG_IP_NF_TARGET_TCPMSS=m
# CONFIG_IP_NF_COMPAT_IPCHAINS is not set
# CONFIG_IP_NF_COMPAT_IPFWADM is not set
# CONFIG_IPV6 is not set
# CONFIG_KHTTPD is not set
# CONFIG_ATM is not set
# CONFIG_IPX is not set
# CONFIG_ATALK is not set
# CONFIG_DECNET is not set
# CONFIG_BRIDGE is not set
# CONFIG_X25 is not set
# CONFIG_LAPB is not set
# CONFIG_LLC is not set
# CONFIG_NET_DIVERT is not set
# CONFIG_ECONET is not set
# CONFIG_WAN_ROUTER is not set
# CONFIG_NET_FASTROUTE is not set
# CONFIG_NET_HW_FLOWCONTROL is not set

#
# QoS and/or fair queueing
#
# CONFIG_NET_SCHED is not set

#
# Telephony Support
#
# CONFIG_PHONE is not set
# CONFIG_PHONE_IXJ is not set

#
# ATA/IDE/MFM/RLL support
#
CONFIG_IDE=y

#
# IDE, ATA and ATAPI Block devices
#
CONFIG_BLK_DEV_IDE=y
# CONFIG_BLK_DEV_HD_IDE is not set
# CONFIG_BLK_DEV_HD is not set
CONFIG_BLK_DEV_IDEDISK=y
# CONFIG_IDEDISK_MULTI_MODE is not set
# CONFIG_BLK_DEV_IDEDISK_VENDOR is not set
# CONFIG_BLK_DEV_IDEDISK_FUJITSU is not set
# CONFIG_BLK_DEV_IDEDISK_IBM is not set
# CONFIG_BLK_DEV_IDEDISK_MAXTOR is not set
# CONFIG_BLK_DEV_IDEDISK_QUANTUM is not set
# CONFIG_BLK_DEV_IDEDISK_SEAGATE is not set
# CONFIG_BLK_DEV_IDEDISK_WD is not set
# CONFIG_BLK_DEV_COMMERIAL is not set
# CONFIG_BLK_DEV_TIVO is not set
# CONFIG_BLK_DEV_IDECS is not set
CONFIG_BLK_DEV_IDECD=y
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDEFLOPPY is not set
CONFIG_BLK_DEV_IDESCSI=m
# CONFIG_BLK_DEV_CMD640 is not set
# CONFIG_BLK_DEV_CMD640_ENHANCED is not set
# CONFIG_BLK_DEV_ISAPNP is not set
# CONFIG_BLK_DEV_RZ1000 is not set
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_IDEPCI_SHARE_IRQ=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
# CONFIG_BLK_DEV_OFFBOARD is not set
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
# CONFIG_IDEDMA_PCI_WIP is not set
# CONFIG_IDEDMA_NEW_DRIVE_LISTINGS is not set
# CONFIG_BLK_DEV_AEC62XX is not set
# CONFIG_AEC62XX_TUNING is not set
# CONFIG_BLK_DEV_ALI15X3 is not set
# CONFIG_WDC_ALI15X3 is not set
# CONFIG_BLK_DEV_AMD7409 is not set
# CONFIG_AMD7409_OVERRIDE is not set
# CONFIG_BLK_DEV_CMD64X is not set
# CONFIG_BLK_DEV_CY82C693 is not set
# CONFIG_BLK_DEV_CS5530 is not set
# CONFIG_BLK_DEV_HPT34X is not set
# CONFIG_HPT34X_AUTODMA is not set
# CONFIG_BLK_DEV_HPT366 is not set
CONFIG_BLK_DEV_PIIX=y
CONFIG_PIIX_TUNING=y
# CONFIG_BLK_DEV_NS87415 is not set
# CONFIG_BLK_DEV_OPTI621 is not set
# CONFIG_BLK_DEV_PDC202XX is not set
# CONFIG_PDC202XX_BURST is not set
# CONFIG_BLK_DEV_OSB4 is not set
# CONFIG_BLK_DEV_SIS5513 is not set
# CONFIG_BLK_DEV_SLC90E66 is not set
# CONFIG_BLK_DEV_TRM290 is not set
# CONFIG_BLK_DEV_VIA82CXXX is not set
# CONFIG_IDE_CHIPSETS is not set
CONFIG_IDEDMA_AUTO=y
# CONFIG_IDEDMA_IVB is not set
# CONFIG_DMA_NONPCI is not set
CONFIG_BLK_DEV_IDE_MODES=y

#
# SCSI support
#
CONFIG_SCSI=m
CONFIG_BLK_DEV_SD=m
CONFIG_SD_EXTRA_DEVS=40
# CONFIG_CHR_DEV_ST is not set
# CONFIG_CHR_DEV_OSST is not set
CONFIG_BLK_DEV_SR=m
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_SR_EXTRA_DEVS=2
CONFIG_CHR_DEV_SG=m
# CONFIG_SCSI_DEBUG_QUEUES is not set
# CONFIG_SCSI_MULTI_LUN is not set
# CONFIG_SCSI_CONSTANTS is not set
# CONFIG_SCSI_LOGGING is not set

#
# SCSI low-level drivers
#
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
# CONFIG_SCSI_7000FASST is not set
# CONFIG_SCSI_ACARD is not set
# CONFIG_SCSI_AHA152X is not set
# CONFIG_SCSI_AHA1542 is not set
# CONFIG_SCSI_AHA1740 is not set
# CONFIG_SCSI_AIC7XXX is not set
# CONFIG_SCSI_AIC7XXX_OLD is not set
# CONFIG_SCSI_ADVANSYS is not set
# CONFIG_SCSI_IN2000 is not set
# CONFIG_SCSI_AM53C974 is not set
# CONFIG_SCSI_MEGARAID is not set
# CONFIG_SCSI_BUSLOGIC is not set
# CONFIG_SCSI_CPQFCTS is not set
# CONFIG_SCSI_DMX3191D is not set
# CONFIG_SCSI_DTC3280 is not set
# CONFIG_SCSI_EATA is not set
# CONFIG_SCSI_EATA_DMA is not set
# CONFIG_SCSI_EATA_PIO is not set
# CONFIG_SCSI_FUTURE_DOMAIN is not set
# CONFIG_SCSI_GDTH is not set
# CONFIG_SCSI_GENERIC_NCR5380 is not set
# CONFIG_SCSI_IPS is not set
# CONFIG_SCSI_INITIO is not set
# CONFIG_SCSI_INIA100 is not set
# CONFIG_SCSI_PPA is not set
# CONFIG_SCSI_IMM is not set
# CONFIG_SCSI_NCR53C406A is not set
# CONFIG_SCSI_NCR53C7xx is not set
# CONFIG_SCSI_NCR53C8XX is not set
# CONFIG_SCSI_SYM53C8XX is not set
# CONFIG_SCSI_PAS16 is not set
# CONFIG_SCSI_PCI2000 is not set
# CONFIG_SCSI_PCI2220I is not set
# CONFIG_SCSI_PSI240I is not set
# CONFIG_SCSI_QLOGIC_FAS is not set
# CONFIG_SCSI_QLOGIC_ISP is not set
# CONFIG_SCSI_QLOGIC_FC is not set
# CONFIG_SCSI_QLOGIC_1280 is not set
# CONFIG_SCSI_SEAGATE is not set
# CONFIG_SCSI_SIM710 is not set
# CONFIG_SCSI_SYM53C416 is not set
# CONFIG_SCSI_DC390T is not set
# CONFIG_SCSI_T128 is not set
# CONFIG_SCSI_U14_34F is not set
# CONFIG_SCSI_ULTRASTOR is not set
# CONFIG_SCSI_DEBUG is not set

#
# IEEE 1394 (FireWire) support
#
# CONFIG_IEEE1394 is not set

#
# I2O device support
#
# CONFIG_I2O is not set
# CONFIG_I2O_PCI is not set
# CONFIG_I2O_BLOCK is not set
# CONFIG_I2O_LAN is not set
# CONFIG_I2O_SCSI is not set
# CONFIG_I2O_PROC is not set

#
# Network device support
#
CONFIG_NETDEVICES=y

#
# ARCnet devices
#
# CONFIG_ARCNET is not set
CONFIG_DUMMY=m
# CONFIG_BONDING is not set
# CONFIG_EQUALIZER is not set
# CONFIG_TUN is not set
# CONFIG_ETHERTAP is not set
# CONFIG_NET_SB1000 is not set

#
# Ethernet (10 or 100Mbit)
#
CONFIG_NET_ETHERNET=y
# CONFIG_NET_VENDOR_3COM is not set
# CONFIG_LANCE is not set
# CONFIG_NET_VENDOR_SMC is not set
# CONFIG_NET_VENDOR_RACAL is not set
# CONFIG_AT1700 is not set
# CONFIG_DEPCA is not set
# CONFIG_HP100 is not set
# CONFIG_NET_ISA is not set
CONFIG_NET_PCI=y
# CONFIG_PCNET32 is not set
# CONFIG_ADAPTEC_STARFIRE is not set
# CONFIG_AC3200 is not set
# CONFIG_APRICOT is not set
# CONFIG_CS89x0 is not set
# CONFIG_TULIP is not set
# CONFIG_DE4X5 is not set
# CONFIG_DGRS is not set
CONFIG_DM9102=m
# CONFIG_EEPRO100 is not set
# CONFIG_EEPRO100_PM is not set
# CONFIG_LNE390 is not set
# CONFIG_FEALNX is not set
# CONFIG_NATSEMI is not set
CONFIG_NE2K_PCI=m
# CONFIG_NE3210 is not set
# CONFIG_ES3210 is not set
# CONFIG_8139TOO is not set
# CONFIG_8139TOO_PIO is not set
# CONFIG_8139TOO_TUNE_TWISTER is not set
# CONFIG_8139TOO_8129 is not set
# CONFIG_SIS900 is not set
# CONFIG_EPIC100 is not set
# CONFIG_SUNDANCE is not set
# CONFIG_TLAN is not set
# CONFIG_VIA_RHINE is not set
# CONFIG_WINBOND_840 is not set
# CONFIG_HAPPYMEAL is not set
# CONFIG_NET_POCKET is not set

#
# Ethernet (1000 Mbit)
#
# CONFIG_ACENIC is not set
# CONFIG_HAMACHI is not set
# CONFIG_YELLOWFIN is not set
# CONFIG_SK98LIN is not set
# CONFIG_FDDI is not set
# CONFIG_HIPPI is not set
# CONFIG_PLIP is not set
CONFIG_PPP=m
# CONFIG_PPP_MULTILINK is not set
# CONFIG_PPP_FILTER is not set
CONFIG_PPP_ASYNC=m
# CONFIG_PPP_SYNC_TTY is not set
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_BSDCOMP=m
# CONFIG_PPPOE is not set
# CONFIG_SLIP is not set

#
# Wireless LAN (non-hamradio)
#
# CONFIG_NET_RADIO is not set

#
# Token Ring devices
#
# CONFIG_TR is not set
# CONFIG_NET_FC is not set
# CONFIG_RCPCI is not set
# CONFIG_SHAPER is not set

#
# Wan interfaces
#
# CONFIG_WAN is not set

#
# Amateur Radio support
#
# CONFIG_HAMRADIO is not set

#
# IrDA (infrared) support
#
CONFIG_IRDA=m
CONFIG_IRLAN=m
CONFIG_IRNET=m
CONFIG_IRCOMM=m
# CONFIG_IRDA_ULTRA is not set
CONFIG_IRDA_OPTIONS=y
CONFIG_IRDA_CACHE_LAST_LSAP=y
CONFIG_IRDA_FAST_RR=y
CONFIG_IRDA_DEBUG=y

#
# Infrared-port device drivers
#
CONFIG_IRTTY_SIR=m
# CONFIG_IRPORT_SIR is not set
CONFIG_DONGLE=y
# CONFIG_ESI_DONGLE is not set
CONFIG_ACTISYS_DONGLE=m
# CONFIG_TEKRAM_DONGLE is not set
# CONFIG_GIRBIL_DONGLE is not set
# CONFIG_LITELINK_DONGLE is not set
# CONFIG_OLD_BELKIN_DONGLE is not set
# CONFIG_USB_IRDA is not set
# CONFIG_NSC_FIR is not set
# CONFIG_WINBOND_FIR is not set
# CONFIG_TOSHIBA_FIR is not set
# CONFIG_SMC_IRCC_FIR is not set

#
# ISDN subsystem
#
# CONFIG_ISDN is not set

#
# Old CD-ROM drivers (not SCSI, not IDE)
#
# CONFIG_CD_NO_IDESCSI is not set

#
# Input core support
#
# CONFIG_INPUT is not set

#
# Character devices
#
CONFIG_VT=y
CONFIG_VT_CONSOLE=y
CONFIG_SERIAL=y
CONFIG_SERIAL_CONSOLE=y
# CONFIG_SERIAL_EXTENDED is not set
# CONFIG_SERIAL_NONSTANDARD is not set
CONFIG_UNIX98_PTYS=y
CONFIG_UNIX98_PTY_COUNT=256
CONFIG_PRINTER=y
# CONFIG_LP_CONSOLE is not set
# CONFIG_PPDEV is not set

#
# I2C support
#
# CONFIG_I2C is not set

#
# Mice
#
# CONFIG_BUSMOUSE is not set
CONFIG_MOUSE=y
CONFIG_PSMOUSE=y
# CONFIG_82C710_MOUSE is not set
# CONFIG_PC110_PAD is not set

#
# Joysticks
#
# CONFIG_JOYSTICK is not set
# CONFIG_QIC02_TAPE is not set

#
# Watchdog Cards
#
# CONFIG_WATCHDOG is not set
# CONFIG_INTEL_RNG is not set
CONFIG_NVRAM=m
CONFIG_RTC=m
# CONFIG_DTLK is not set
# CONFIG_R3964 is not set
# CONFIG_APPLICOM is not set

#
# Ftape, the floppy tape device driver
#
# CONFIG_FTAPE is not set
CONFIG_AGP=m
CONFIG_AGP_INTEL=y
# CONFIG_AGP_I810 is not set
# CONFIG_AGP_VIA is not set
# CONFIG_AGP_AMD is not set
# CONFIG_AGP_SIS is not set
# CONFIG_AGP_ALI is not set
# CONFIG_DRM is not set

#
# Multimedia devices
#
# CONFIG_VIDEO_DEV is not set

#
# File systems
#
# CONFIG_QUOTA is not set
# CONFIG_AUTOFS_FS is not set
CONFIG_AUTOFS4_FS=y
CONFIG_REISERFS_FS=m
# CONFIG_REISERFS_CHECK is not set
# CONFIG_ADFS_FS is not set
# CONFIG_ADFS_FS_RW is not set
# CONFIG_AFFS_FS is not set
# CONFIG_HFS_FS is not set
# CONFIG_BFS_FS is not set
CONFIG_FAT_FS=m
CONFIG_MSDOS_FS=m
# CONFIG_UMSDOS_FS is not set
CONFIG_VFAT_FS=m
# CONFIG_EFS_FS is not set
# CONFIG_JFFS_FS is not set
# CONFIG_CRAMFS is not set
CONFIG_TMPFS=y
# CONFIG_RAMFS is not set
CONFIG_ISO9660_FS=m
CONFIG_JOLIET=y
CONFIG_MINIX_FS=m
# CONFIG_VXFS_FS is not set
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS_RW is not set
# CONFIG_HPFS_FS is not set
CONFIG_PROC_FS=y
# CONFIG_DEVFS_FS is not set
# CONFIG_DEVFS_MOUNT is not set
# CONFIG_DEVFS_DEBUG is not set
CONFIG_DEVPTS_FS=y
# CONFIG_QNX4FS_FS is not set
# CONFIG_QNX4FS_RW is not set
# CONFIG_ROMFS_FS is not set
CONFIG_EXT2_FS=y
# CONFIG_SYSV_FS is not set
# CONFIG_SYSV_FS_WRITE is not set
# CONFIG_UDF_FS is not set
# CONFIG_UDF_RW is not set
# CONFIG_UFS_FS is not set
# CONFIG_UFS_FS_WRITE is not set

#
# Network File Systems
#
# CONFIG_CODA_FS is not set
CONFIG_NFS_FS=m
CONFIG_NFS_V3=y
# CONFIG_ROOT_NFS is not set
CONFIG_NFSD=m
CONFIG_NFSD_V3=y
CONFIG_SUNRPC=m
CONFIG_LOCKD=m
CONFIG_LOCKD_V4=y
CONFIG_SMB_FS=y
CONFIG_SMB_NLS_DEFAULT=y
CONFIG_SMB_NLS_REMOTE="cp852"
# CONFIG_NCP_FS is not set
# CONFIG_NCPFS_PACKET_SIGNING is not set
# CONFIG_NCPFS_IOCTL_LOCKING is not set
# CONFIG_NCPFS_STRONG is not set
# CONFIG_NCPFS_NFS_NS is not set
# CONFIG_NCPFS_OS2_NS is not set
# CONFIG_NCPFS_SMALLDOS is not set
# CONFIG_NCPFS_NLS is not set
# CONFIG_NCPFS_EXTRAS is not set

#
# Partition Types
#
# CONFIG_PARTITION_ADVANCED is not set
CONFIG_MSDOS_PARTITION=y
CONFIG_SMB_NLS=y
CONFIG_NLS=y

#
# Native Language Support
#
CONFIG_NLS_DEFAULT="iso8859-2"
# CONFIG_NLS_CODEPAGE_437 is not set
# CONFIG_NLS_CODEPAGE_737 is not set
# CONFIG_NLS_CODEPAGE_775 is not set
# CONFIG_NLS_CODEPAGE_850 is not set
CONFIG_NLS_CODEPAGE_852=m
# CONFIG_NLS_CODEPAGE_855 is not set
# CONFIG_NLS_CODEPAGE_857 is not set
# CONFIG_NLS_CODEPAGE_860 is not set
# CONFIG_NLS_CODEPAGE_861 is not set
# CONFIG_NLS_CODEPAGE_862 is not set
# CONFIG_NLS_CODEPAGE_863 is not set
# CONFIG_NLS_CODEPAGE_864 is not set
# CONFIG_NLS_CODEPAGE_865 is not set
# CONFIG_NLS_CODEPAGE_866 is not set
# CONFIG_NLS_CODEPAGE_869 is not set
# CONFIG_NLS_CODEPAGE_936 is not set
# CONFIG_NLS_CODEPAGE_950 is not set
# CONFIG_NLS_CODEPAGE_932 is not set
# CONFIG_NLS_CODEPAGE_949 is not set
# CONFIG_NLS_CODEPAGE_874 is not set
# CONFIG_NLS_ISO8859_8 is not set
# CONFIG_NLS_CODEPAGE_1251 is not set
# CONFIG_NLS_ISO8859_1 is not set
CONFIG_NLS_ISO8859_2=m
# CONFIG_NLS_ISO8859_3 is not set
# CONFIG_NLS_ISO8859_4 is not set
# CONFIG_NLS_ISO8859_5 is not set
# CONFIG_NLS_ISO8859_6 is not set
# CONFIG_NLS_ISO8859_7 is not set
# CONFIG_NLS_ISO8859_9 is not set
# CONFIG_NLS_ISO8859_13 is not set
# CONFIG_NLS_ISO8859_14 is not set
# CONFIG_NLS_ISO8859_15 is not set
# CONFIG_NLS_KOI8_R is not set
# CONFIG_NLS_KOI8_U is not set
# CONFIG_NLS_UTF8 is not set

#
# Console drivers
#
CONFIG_VGA_CONSOLE=y
CONFIG_VIDEO_SELECT=y
# CONFIG_MDA_CONSOLE is not set

#
# Frame-buffer support
#
CONFIG_FB=y
CONFIG_DUMMY_CONSOLE=y
CONFIG_FB_RIVA=y
# CONFIG_FB_CLGEN is not set
# CONFIG_FB_PM2 is not set
# CONFIG_FB_CYBER2000 is not set
# CONFIG_FB_VESA is not set
# CONFIG_FB_VGA16 is not set
# CONFIG_FB_HGA is not set
CONFIG_VIDEO_SELECT=y
# CONFIG_FB_E1355 is not set
# CONFIG_FB_MATROX is not set
# CONFIG_FB_ATY is not set
# CONFIG_FB_ATY128 is not set
# CONFIG_FB_3DFX is not set
# CONFIG_FB_SIS is not set
# CONFIG_FB_VIRTUAL is not set
CONFIG_FBCON_ADVANCED=y
# CONFIG_FBCON_MFB is not set
# CONFIG_FBCON_CFB2 is not set
# CONFIG_FBCON_CFB4 is not set
CONFIG_FBCON_CFB8=y
CONFIG_FBCON_CFB16=y
CONFIG_FBCON_CFB24=y
CONFIG_FBCON_CFB32=y
# CONFIG_FBCON_AFB is not set
# CONFIG_FBCON_ILBM is not set
# CONFIG_FBCON_IPLAN2P2 is not set
# CONFIG_FBCON_IPLAN2P4 is not set
# CONFIG_FBCON_IPLAN2P8 is not set
# CONFIG_FBCON_MAC is not set
# CONFIG_FBCON_VGA_PLANES is not set
# CONFIG_FBCON_VGA is not set
# CONFIG_FBCON_HGA is not set
# CONFIG_FBCON_FONTWIDTH8_ONLY is not set
CONFIG_FBCON_FONTS=y
CONFIG_FONT_8x8=y
CONFIG_FONT_8x16=y
# CONFIG_FONT_SUN8x16 is not set
# CONFIG_FONT_SUN12x22 is not set
# CONFIG_FONT_6x11 is not set
# CONFIG_FONT_PEARL_8x8 is not set
# CONFIG_FONT_ACORN_8x8 is not set

#
# Sound
#
CONFIG_SOUND=y
# CONFIG_SOUND_CMPCI is not set
# CONFIG_SOUND_EMU10K1 is not set
# CONFIG_SOUND_FUSION is not set
# CONFIG_SOUND_CS4281 is not set
# CONFIG_SOUND_ES1370 is not set
# CONFIG_SOUND_ES1371 is not set
# CONFIG_SOUND_ESSSOLO1 is not set
# CONFIG_SOUND_MAESTRO is not set
# CONFIG_SOUND_MAESTRO3 is not set
# CONFIG_SOUND_ICH is not set
# CONFIG_SOUND_SONICVIBES is not set
# CONFIG_SOUND_TRIDENT is not set
# CONFIG_SOUND_MSNDCLAS is not set
# CONFIG_SOUND_MSNDPIN is not set
# CONFIG_SOUND_VIA82CXXX is not set
CONFIG_SOUND_OSS=m
CONFIG_SOUND_TRACEINIT=y
CONFIG_SOUND_DMAP=y
# CONFIG_SOUND_AD1816 is not set
# CONFIG_SOUND_SGALAXY is not set
# CONFIG_SOUND_ADLIB is not set
# CONFIG_SOUND_ACI_MIXER is not set
# CONFIG_SOUND_CS4232 is not set
# CONFIG_SOUND_SSCAPE is not set
# CONFIG_SOUND_GUS is not set
# CONFIG_SOUND_VMIDI is not set
# CONFIG_SOUND_TRIX is not set
# CONFIG_SOUND_MSS is not set
# CONFIG_SOUND_MPU401 is not set
# CONFIG_SOUND_NM256 is not set
CONFIG_SOUND_MAD16=m
CONFIG_MAD16_OLDCARD=y
# CONFIG_SOUND_PAS is not set
# CONFIG_PAS_JOYSTICK is not set
# CONFIG_SOUND_PSS is not set
CONFIG_SOUND_SB=m
# CONFIG_SOUND_AWE32_SYNTH is not set
# CONFIG_SOUND_WAVEFRONT is not set
# CONFIG_SOUND_MAUI is not set
# CONFIG_SOUND_YM3812 is not set
# CONFIG_SOUND_OPL3SA1 is not set
# CONFIG_SOUND_OPL3SA2 is not set
# CONFIG_SOUND_YMFPCI is not set
# CONFIG_SOUND_YMFPCI_LEGACY is not set
# CONFIG_SOUND_UART6850 is not set
# CONFIG_SOUND_AEDSP16 is not set
# CONFIG_SOUND_TVMIXER is not set

#
# USB support
#
# CONFIG_USB is not set

#
# Kernel hacking
#
CONFIG_MAGIC_SYSRQ=y

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-17  9:28 ` Martin Diehl
  2001-12-17 22:20   ` Pawel Kot
@ 2001-12-17 22:45   ` Jean Tourrilhes
  2001-12-17 23:22     ` Pawel Kot
  1 sibling, 1 reply; 10+ messages in thread
From: Jean Tourrilhes @ 2001-12-17 22:45 UTC (permalink / raw)
  To: Martin Diehl; +Cc: Pawel Kot, Dag Brattli, linux-kernel, linux-irda

On Mon, Dec 17, 2001 at 10:28:45AM +0100, Martin Diehl wrote:
> 
> [Jean added to CC]
> 
> On Fri, 14 Dec 2001, Pawel Kot wrote:
> 
> > I found an annoying problem with irda on 2.4.16.
> > When I remove irlan module I get sementation fault:
> > root@blurp:~# rmmod irlan
> > Dec 14 02:27:35 blurp kernel: kernel BUG at slab.c:1200!
> > Dec 14 02:27:35 blurp kernel: invalid operand: 0000
> > Dec 14 02:27:35 blurp kernel: CPU:    0
> > Dec 14 02:27:35 blurp kernel: EIP:    0010:[kmem_extra_free_checks+81/140] Not tainted
> [...]
> > Dec 14 02:27:35 blurp kernel: Process rmmod (pid: 110, stackpage=cc045000)
> [..]
> > Dec 14 02:27:35 blurp kernel: Call Trace:


	Where is this comming from ? Was it sent to the IrDA mailing list ?


>  [kfree+450/576]
>  [netdev_finish_unregister+145/152]
>  [unregister_netdevice+451/632]
>  [unregister_netdev+16/40]
> 
> Seems some inconsistency in the way how the irlan netdev is handled:
> having NETIF_F_DYNALLOC set for a netdev which is not allocated as an
> independent object doesn't seem to be a good idea to me ;-)
> 
> The patch below simply removes NETIF_F_DYNALLOC just before calling
> unregister_netdev() und should fix the issue. It's untested however,
> since I'm unable to reproduce the Oops on UP without preempt (but it
> should be there as well, due to ipfrag_time for example). At least it
> compiles and doesn't do any harm to me.

	Why don't you just fix irlan_eth_init() ? The NETIF_F_DYNALLOC
is only used in the unregister_netdevice() functions (check your
kernel), so it's cleaner to never set the flag in the first place.

	Also : I suspect the Dag added this flag as a workaround for
some refcount problem, because with it the code does one more unref
that without. So, I suspect the refcount is broken. By the way, this
flag doesn't change the behaviour as far as waiting for people that
hold some refcount on the device.

> IMHO, retiring dynalloc is just some sort of band-aid because I do
> believe, using it would be a good idea - but would need some more
> changes for irlan.

	No, that the right way. NETIF_F_DYNALLOC is only ever used for
that. One the other hand, you might need to fix the refcount.

> Btw., I'm not sure about the status of irlan - I'm only using ppp over
> ircomm or irnet.

	Same for me.

> HTH
> Martin

	Have fun...

	Jean

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-17 22:45   ` Jean Tourrilhes
@ 2001-12-17 23:22     ` Pawel Kot
  2001-12-18  0:10       ` Jean Tourrilhes
  0 siblings, 1 reply; 10+ messages in thread
From: Pawel Kot @ 2001-12-17 23:22 UTC (permalink / raw)
  To: jt; +Cc: Martin Diehl, Dag Brattli, linux-kernel, linux-irda

On Mon, 17 Dec 2001, Jean Tourrilhes wrote:

> > On Fri, 14 Dec 2001, Pawel Kot wrote:
> >
> > > I found an annoying problem with irda on 2.4.16.
> > > When I remove irlan module I get sementation fault:
> > > root@blurp:~# rmmod irlan
> > > Dec 14 02:27:35 blurp kernel: kernel BUG at slab.c:1200!
> > > Dec 14 02:27:35 blurp kernel: invalid operand: 0000
> > > Dec 14 02:27:35 blurp kernel: CPU:    0
> > > Dec 14 02:27:35 blurp kernel: EIP:    0010:[kmem_extra_free_checks+81/140] Not tainted
> > [...]
> > > Dec 14 02:27:35 blurp kernel: Process rmmod (pid: 110, stackpage=cc045000)
> > [..]
> > > Dec 14 02:27:35 blurp kernel: Call Trace:
>
>
> 	Where is this comming from ? Was it sent to the IrDA mailing list ?

It was originally sent to lkml and Dag (email taken from irlan sources).
Now I reposted it also to irda-linux.

pkot
-- 
mailto:pkot@linuxnews.pl :: mailto:pkot@slackware.pl
http://kt.linuxnews.pl/ :: Kernel Traffic po polsku
http://tfuj.pl/cv.html :: http://tfuj.pl/pgp.asc



^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-17 23:22     ` Pawel Kot
@ 2001-12-18  0:10       ` Jean Tourrilhes
  2001-12-18  0:22         ` Pawel Kot
  2001-12-18  1:16         ` Pawel Kot
  0 siblings, 2 replies; 10+ messages in thread
From: Jean Tourrilhes @ 2001-12-18  0:10 UTC (permalink / raw)
  To: Pawel Kot; +Cc: jt, Martin Diehl, Dag Brattli, linux-kernel, linux-irda

On Tue, Dec 18, 2001 at 12:22:22AM +0100, Pawel Kot wrote:
> 
> It was originally sent to lkml and Dag (email taken from irlan sources).
> Now I reposted it also to irda-linux.
> 
> pkot

	By the way, don't expect miracles, most developpers don't use
IrLAN.
	I'm surprised the fix of Martin didn't work...

	Jean

^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-18  0:10       ` Jean Tourrilhes
@ 2001-12-18  0:22         ` Pawel Kot
  2001-12-18  1:16         ` Pawel Kot
  1 sibling, 0 replies; 10+ messages in thread
From: Pawel Kot @ 2001-12-18  0:22 UTC (permalink / raw)
  To: jt; +Cc: Martin Diehl, Dag Brattli, linux-kernel, linux-irda

On Mon, 17 Dec 2001, Jean Tourrilhes wrote:

> On Tue, Dec 18, 2001 at 12:22:22AM +0100, Pawel Kot wrote:
> >
> > It was originally sent to lkml and Dag (email taken from irlan sources).
> > Now I reposted it also to irda-linux.
>
> 	By the way, don't expect miracles, most developpers don't use
> IrLAN.

I'm *NOT* using IrLAN. Just accidently found the bug ;-)

pkot
-- 
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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-18  0:10       ` Jean Tourrilhes
  2001-12-18  0:22         ` Pawel Kot
@ 2001-12-18  1:16         ` Pawel Kot
  2001-12-18  1:23           ` Jean Tourrilhes
  1 sibling, 1 reply; 10+ messages in thread
From: Pawel Kot @ 2001-12-18  1:16 UTC (permalink / raw)
  To: jt; +Cc: Martin Diehl, Dag Brattli, linux-kernel, linux-irda

On Mon, 17 Dec 2001, Jean Tourrilhes wrote:

> 	I'm surprised the fix of Martin didn't work...

It did in fact. My apologiese. I have applied it to the wrong kernel tree
:/

Thanks Martin.

Any chance to have this patch in 2.4.17?

pkot
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^ permalink raw reply	[flat|nested] 10+ messages in thread

* Re: [BUG()] IrDA in 2.4.16 + preempt
  2001-12-18  1:16         ` Pawel Kot
@ 2001-12-18  1:23           ` Jean Tourrilhes
  0 siblings, 0 replies; 10+ messages in thread
From: Jean Tourrilhes @ 2001-12-18  1:23 UTC (permalink / raw)
  To: Pawel Kot; +Cc: jt, Martin Diehl, Dag Brattli, linux-kernel, linux-irda

On Tue, Dec 18, 2001 at 02:16:16AM +0100, Pawel Kot wrote:
> On Mon, 17 Dec 2001, Jean Tourrilhes wrote:
> 
> > 	I'm surprised the fix of Martin didn't work...
> 
> It did in fact. My apologiese. I have applied it to the wrong kernel tree
> :/

	No comment ;-)

> Thanks Martin.
> 
> Any chance to have this patch in 2.4.17?
> 
> pkot

	You see, I try to be a good citizen (even if sometime I feel
very "emotional" about dropped patches). There is already a good chunk
of IrDA patches in 2.4.17, so this will wait 2.4.18. Moreover, this is
"rc1", and I make a point of always sending my patches at the
beggining of the "pre" series and batched.
	I have already another IrDA minor cleanup sent to me by Kai
Germaschewski. I'll batch that together. It's not like it's urgent...
	Regards,

	Jean

^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2001-12-18  1:24 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2001-12-14 10:31 [BUG()] IrDA in 2.4.16 + preempt Pawel Kot
2001-12-17  9:28 ` Martin Diehl
2001-12-17 22:20   ` Pawel Kot
2001-12-17 23:19     ` Pawel Kot
2001-12-17 22:45   ` Jean Tourrilhes
2001-12-17 23:22     ` Pawel Kot
2001-12-18  0:10       ` Jean Tourrilhes
2001-12-18  0:22         ` Pawel Kot
2001-12-18  1:16         ` Pawel Kot
2001-12-18  1:23           ` Jean Tourrilhes

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