Hi,
got this oops while unloading ide-scsi (rmmod segfaulted)
UP P4 1.7Ghz non Preempt, No HT, IDE DVD/CD-RW, IDE Disk, Vanilla
Kernel, (-chaos -> Debian make-kpkg --append-to-version=-chaos)
Linux chaos 2.6.11-rc3-chaos #1 Fri Feb 4 23:27:57 CET 2005 i686 GNU/Linux
Unable to handle kernel NULL pointer dereference at virtual address 000001e0
printing eip:
e089e539
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: nls_iso8859_1 isofs autofs4 nfs lockd sunrpc snd_ens1371 snd_rawmidi snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd snd_page_alloc e100 i2c_i801 i2c_core evdev usbhid uhci_hcd usbcore intel_agp agpgart sr_mod cdrom dm_mod ide_scsi scsi_mod eepro100 mii
CPU: 0
EIP: 0060:[<e089e539>] Not tainted VLI
EFLAGS: 00010002 (2.6.11-rc3-chaos)
EIP is at idescsi_queue+0x119/0x400 [ide_scsi]
eax: 00000000 ebx: c0971a40 ecx: e08c4a30 edx: dedf8b00
esi: 00001388 edi: c044e234 ebp: dedf8b54 esp: c910dc94
ds: 007b es: 007b ss: 0068
Process rmmod (pid: 11757, threadinfo=c910c000 task=c9eec510)
Stack: dffef380 00000020 00000010 c0971a40 dedf8b00 d9546cb0 dedf8b68 deffcd80
000001d4 c044e234 00000293 dedf8b00 ded25400 00000000 e08c47cf dedf8b00
e08c4a30 e08c76d0 dedf8b88 dedf8b00 df692c00 ded25400 c1583030 e08caa9a
Call Trace:
[<e08c47cf>] scsi_dispatch_cmd+0x16f/0x250 [scsi_mod]
[<e08c4a30>] scsi_done+0x0/0x30 [scsi_mod]
[<e08c76d0>] scsi_times_out+0x0/0xc0 [scsi_mod]
[<e08caa9a>] scsi_request_fn+0x1ca/0x380 [scsi_mod]
[<c0233858>] __elv_add_request+0x78/0xc0
[<c0236446>] blk_insert_request+0xa6/0xd0
[<e08c97b8>] scsi_insert_special_req+0x38/0x40 [scsi_mod]
[<e08c9a28>] scsi_wait_req+0x68/0xa0 [scsi_mod]
[<e08c9960>] scsi_wait_done+0x0/0x60 [scsi_mod]
[<e08a3462>] sr_do_ioctl+0x92/0x2a0 [sr_mod]
[<e08a3155>] sr_packet+0x25/0x40 [sr_mod]
[<e08e7a75>] cdrom_get_disc_info+0x65/0xb0 [cdrom]
[<e08e372b>] cdrom_mrw_exit+0x1b/0x70 [cdrom]
[<e08e3323>] unregister_cdrom+0x83/0xb0 [cdrom]
[<e08a319a>] sr_kref_release+0x2a/0x50 [sr_mod]
[<e08a3170>] sr_kref_release+0x0/0x50 [sr_mod]
[<c01bf769>] kref_put+0x39/0xa0
[<c01bed1f>] kobject_put+0x1f/0x30
[<e08a31f9>] sr_remove+0x39/0x4b [sr_mod]
[<e08a3170>] sr_kref_release+0x0/0x50 [sr_mod]
[<c022e946>] device_release_driver+0x86/0x90
[<c022ebc4>] bus_remove_device+0x64/0xb0
[<c022d8cd>] device_del+0x5d/0xa0
[<e08cda1f>] scsi_remove_device+0x4f/0xb0 [scsi_mod]
[<e08ccaca>] scsi_forget_host+0x2a/0x50 [scsi_mod]
[<e08c5319>] scsi_remove_host+0x19/0x80 [scsi_mod]
[<e089e2dd>] idescsi_cleanup+0x4d/0x60 [ide_scsi]
[<c024b95e>] ide_unregister_driver+0x5e/0x90
[<c012f7f8>] try_stop_module+0x28/0x30
[<e089edef>] exit_idescsi_module+0xf/0x11 [ide_scsi]
[<c012f9b4>] sys_delete_module+0x144/0x180
[<c0147500>] do_munmap+0xf0/0x160
[<c01475b4>] sys_munmap+0x44/0x70
[<c0102f33>] syscall_call+0x7/0xb
Code: 8b 54 24 3c 8b 42 64 89 53 2c 89 43 14 89 43 0c 8b 4c 24 40 89 4b 30 a1 a0 0d 35 c0 8b 72 3c 01 f0 89 43 38 8b 7c 24 24 8b 47 20 <8b> 80 e0 01 00 00 a8 01 74 05 0f ba 6b 34 02 8b 43 1c 89 44 24
--
Florian Lohoff [email protected] +49-171-2280134
Heisenberg may have been here.
Hi Florian,
Thanks for the report, addition of MRW support to cdrom.c exposed
bugs in ide-scsi locking. ide-scsi is a "virtual" host driver which is a
bridge between IDE and SCSI subsystems so fixing ide-scsi requires
assuring that locking is correct both for IDE and SCSI "side".
Required changes consist of:
* adding reference counting to ide-scsi (now in ide-dev-2.6 tree)
* fixing various races in IDE device drivers to make conversion
to driver model possible (now in ide-dev-2.6 tree)
* converting IDE device drivers to driver model (posted for review)
* fixing reference counting w.r.t. SCSI subsystem (in testing)
With all the above changes I can rmmod ide-scsi safely.
In short: this will hopefully get fixed in -mm tree soon.
Regards,
Bartlomiej
On Tue, 8 Feb 2005 18:55:29 +0100, Florian Lohoff <[email protected]> wrote:
>
> Hi,
> got this oops while unloading ide-scsi (rmmod segfaulted)
>
> UP P4 1.7Ghz non Preempt, No HT, IDE DVD/CD-RW, IDE Disk, Vanilla
> Kernel, (-chaos -> Debian make-kpkg --append-to-version=-chaos)
>
> Linux chaos 2.6.11-rc3-chaos #1 Fri Feb 4 23:27:57 CET 2005 i686 GNU/Linux
>
> Unable to handle kernel NULL pointer dereference at virtual address 000001e0
> printing eip:
> e089e539
> *pde = 00000000
> Oops: 0000 [#1]
> Modules linked in: nls_iso8859_1 isofs autofs4 nfs lockd sunrpc snd_ens1371 snd_rawmidi snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd snd_page_alloc e100 i2c_i801 i2c_core evdev usbhid uhci_hcd usbcore intel_agp agpgart sr_mod cdrom dm_mod ide_scsi scsi_mod eepro100 mii
> CPU: 0
> EIP: 0060:[<e089e539>] Not tainted VLI
> EFLAGS: 00010002 (2.6.11-rc3-chaos)
> EIP is at idescsi_queue+0x119/0x400 [ide_scsi]
> eax: 00000000 ebx: c0971a40 ecx: e08c4a30 edx: dedf8b00
> esi: 00001388 edi: c044e234 ebp: dedf8b54 esp: c910dc94
> ds: 007b es: 007b ss: 0068
> Process rmmod (pid: 11757, threadinfo=c910c000 task=c9eec510)
> Stack: dffef380 00000020 00000010 c0971a40 dedf8b00 d9546cb0 dedf8b68 deffcd80
> 000001d4 c044e234 00000293 dedf8b00 ded25400 00000000 e08c47cf dedf8b00
> e08c4a30 e08c76d0 dedf8b88 dedf8b00 df692c00 ded25400 c1583030 e08caa9a
> Call Trace:
> [<e08c47cf>] scsi_dispatch_cmd+0x16f/0x250 [scsi_mod]
> [<e08c4a30>] scsi_done+0x0/0x30 [scsi_mod]
> [<e08c76d0>] scsi_times_out+0x0/0xc0 [scsi_mod]
> [<e08caa9a>] scsi_request_fn+0x1ca/0x380 [scsi_mod]
> [<c0233858>] __elv_add_request+0x78/0xc0
> [<c0236446>] blk_insert_request+0xa6/0xd0
> [<e08c97b8>] scsi_insert_special_req+0x38/0x40 [scsi_mod]
> [<e08c9a28>] scsi_wait_req+0x68/0xa0 [scsi_mod]
> [<e08c9960>] scsi_wait_done+0x0/0x60 [scsi_mod]
> [<e08a3462>] sr_do_ioctl+0x92/0x2a0 [sr_mod]
> [<e08a3155>] sr_packet+0x25/0x40 [sr_mod]
> [<e08e7a75>] cdrom_get_disc_info+0x65/0xb0 [cdrom]
> [<e08e372b>] cdrom_mrw_exit+0x1b/0x70 [cdrom]
> [<e08e3323>] unregister_cdrom+0x83/0xb0 [cdrom]
> [<e08a319a>] sr_kref_release+0x2a/0x50 [sr_mod]
> [<e08a3170>] sr_kref_release+0x0/0x50 [sr_mod]
> [<c01bf769>] kref_put+0x39/0xa0
> [<c01bed1f>] kobject_put+0x1f/0x30
> [<e08a31f9>] sr_remove+0x39/0x4b [sr_mod]
> [<e08a3170>] sr_kref_release+0x0/0x50 [sr_mod]
> [<c022e946>] device_release_driver+0x86/0x90
> [<c022ebc4>] bus_remove_device+0x64/0xb0
> [<c022d8cd>] device_del+0x5d/0xa0
> [<e08cda1f>] scsi_remove_device+0x4f/0xb0 [scsi_mod]
> [<e08ccaca>] scsi_forget_host+0x2a/0x50 [scsi_mod]
> [<e08c5319>] scsi_remove_host+0x19/0x80 [scsi_mod]
> [<e089e2dd>] idescsi_cleanup+0x4d/0x60 [ide_scsi]
> [<c024b95e>] ide_unregister_driver+0x5e/0x90
> [<c012f7f8>] try_stop_module+0x28/0x30
> [<e089edef>] exit_idescsi_module+0xf/0x11 [ide_scsi]
> [<c012f9b4>] sys_delete_module+0x144/0x180
> [<c0147500>] do_munmap+0xf0/0x160
> [<c01475b4>] sys_munmap+0x44/0x70
> [<c0102f33>] syscall_call+0x7/0xb
> Code: 8b 54 24 3c 8b 42 64 89 53 2c 89 43 14 89 43 0c 8b 4c 24 40 89 4b 30 a1 a0 0d 35 c0 8b 72 3c 01 f0 89 43 38 8b 7c 24 24 8b 47 20 <8b> 80 e0 01 00 00 a8 01 74 05 0f ba 6b 34 02 8b 43 1c 89 44 24
>
> --
> Florian Lohoff [email protected] +49-171-2280134
> Heisenberg may have been here.
>
>
>
Hi,
> got this oops while unloading ide-scsi (rmmod segfaulted)
This happens to me too, reliably. I'm using vanilla 2.6.11 with the
swsusp2-patchset. "Preemtible" is turned on here. I have an ide disk and an
ide dvd/cd drive. My kernel boot options contain "hdc=ide-scsi".
Regards,
Robert
Unable to handle kernel NULL pointer dereference at virtual address 000001e8
printing eip:
e0ab6579
*pde = 00000000
Oops: 0000 [#2]
PREEMPT
Modules linked in: snd_pcm_oss snd_mixer_oss snd_seq_oss snd_seq_midi_event
snd_seq snd_seq_device eth1394 ohci1394 ieee1394 yenta_socket rsrc_nonstatic
pcmcia_
core ehci_hcd ide_scsi sg acerhk cpufreq_ondemand ieee80211_crypt_tkip
ieee80211_crypt_ccmp ieee80211_crypt_wep ipw2100 firmware_class ieee80211
ieee80211_crypt snd_intel8x0 snd_ac97_codec snd_pc
m snd_timer snd snd_page_alloc radeon drm intel_agp agpgart usbhid uhci_hcd
usbcore sr_mod scsi_mod cdrom
CPU: 0
EIP: 0060:[pg0+543069561/1068700672] Not tainted VLI
EIP: 0060:[<e0ab6579>] Not tainted VLI
EFLAGS: 00010092 (2.6.11Y)
EIP is at idescsi_queue+0x119/0x430 [ide_scsi]
eax: 00000000 ebx: ddeb71c0 ecx: e0973430 edx: dead7040
esi: 00001388 edi: c04bfbec ebp: dead7094 esp: deb0def8
ds: 007b es: 007b ss: 0068
Process scsi_eh_0 (pid: 6488, threadinfo=deb0c000 task=de975020)
Stack: dff6f380 00000020 dead7040 ddeb71c0 00000000 00000246 c0123d55 df562080
000001dc c04bfbec 00000292 dead7040 dea02a00 00000001 e097352a dead7040
e0973430 e0973410 00000000 00000000 deb0df48 deb0df48 dead7040 dead7100
Call Trace:
[__mod_timer+309/448] __mod_timer+0x135/0x1c0
[<c0123d55>] __mod_timer+0x135/0x1c0
[pg0+541746474/1068700672] scsi_send_eh_cmnd+0x9a/0x170 [scsi_mod]
[<e097352a>] scsi_send_eh_cmnd+0x9a/0x170 [scsi_mod]
[pg0+541746224/1068700672] scsi_eh_done+0x0/0x60 [scsi_mod]
[<e0973430>] scsi_eh_done+0x0/0x60 [scsi_mod]
[pg0+541746192/1068700672] scsi_eh_times_out+0x0/0x20 [scsi_mod]
[<e0973410>] scsi_eh_times_out+0x0/0x20 [scsi_mod]
[pg0+541747525/1068700672] scsi_eh_tur+0x95/0xd0 [scsi_mod]
[<e0973945>] scsi_eh_tur+0x95/0xd0 [scsi_mod]
[pg0+541747689/1068700672] scsi_eh_abort_cmds+0x69/0x80 [scsi_mod]
[<e09739e9>] scsi_eh_abort_cmds+0x69/0x80 [scsi_mod]
[pg0+541750801/1068700672] scsi_unjam_host+0xa1/0xd0 [scsi_mod]
[<e0974611>] scsi_unjam_host+0xa1/0xd0 [scsi_mod]
[complete+82/128] complete+0x52/0x80
[<c0117942>] complete+0x52/0x80
[pg0+541751007/1068700672] scsi_error_handler+0x9f/0xd0 [scsi_mod]
[<e09746df>] scsi_error_handler+0x9f/0xd0 [scsi_mod]
[pg0+541750848/1068700672] scsi_error_handler+0x0/0xd0 [scsi_mod]
[<e0974640>] scsi_error_handler+0x0/0xd0 [scsi_mod]
[kernel_thread_helper+5/24] kernel_thread_helper+0x5/0x18
[<c01012fd>] kernel_thread_helper+0x5/0x18
Code: 8b 54 24 3c 8b 42 64 89 53 2c 89 43 14 89 43 0c 8b 4c 24 40 89 4b 30 a1
a0 ad 3e c0 8b 72 3c 01 f0 89 43 38 8b 7c 24 24 8b 47 20 <8b> 80 e8 01 00 00
a8 01
74 05 0f ba 6b 34 02 8b 43 1c 89 44 24
<6>note: scsi_eh_0[6488] exited with preempt_count 1
--
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