reference count warning when removing scsi_debug device
ARNING: CPU: 2 PID: 16732 at kernel/module.c:954 module_put+0xc9/0xd0()
[150550.918033] Modules linked in: scsi_debug(-) pci_stub vboxpci(O)
vboxnetadp(O) vboxnetflt(O) vboxdrv(O) nfsv3 rfcomm bnep bluetooth
rpcsec_gss_krb5 nfsv4 hid_generic usbhid pl2303 hid usbserial
snd_hda_codec_hdmi i915 x86_pkg_temp_thermal coretemp kvm_intel
drm_kms_helper kvm drm nfsd snd_hda_codec_realtek
snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel aesni_intel
aes_x86_64 ablk_helper cryptd snd_hda_controller snd_hda_codec
auth_rpcgss snd_hwdep snd_pcm oid_registry nfs_acl nfs snd_seq_midi
snd_seq_midi_event snd_rawmidi snd_seq lrw gf128mul snd_seq_device
snd_timer snd glue_helper microcode mei_me psmouse i2c_algo_bit mei
video tpm_infineon tpm_tis r8169 soundcore serio_raw mii lockd lpc_ich
mac_hid grace sunrpc fscache binfmt_misc nls_iso8859_1 parport_pc
ppdev lp parport [last unloaded: scsi_debug]
[150550.918069] CPU: 2 PID: 16732 Comm: modprobe Tainted: G W
IO 3.19.0-rc5+ #1
[150550.918070] Hardware name: Gigabyte Technology Co., Ltd.
H87M-D3H/H87M-D3H, BIOS F6 08/03/2013
[150550.918071] ffffffff81a85373 ffff880229f9bb88 ffffffff8175a6cb
0000000000000000
[150550.918072] 0000000000000000 ffff880229f9bbc8 ffffffff8105382a
ffffffff81ccf320
[150550.918074] ffffffffa070fba0 ffffffffa070fba0 ffff88022a136010
0000000000800010
[150550.918076] Call Trace:
[150550.918081] [<ffffffff8175a6cb>] dump_stack+0x4c/0x65
[150550.918084] [<ffffffff8105382a>] warn_slowpath_common+0x8a/0xc0
[150550.918086] [<ffffffff8105391a>] warn_slowpath_null+0x1a/0x20
[150550.918088] [<ffffffff810d6879>] module_put+0xc9/0xd0
[150550.918090] [<ffffffff814f6e18>] scsi_device_put+0x48/0x50
[150550.918092] [<ffffffff8150e5c2>] scsi_disk_put+0x32/0x50
[150550.918093] [<ffffffff8150f8cc>] sd_shutdown+0x8c/0x150
[150550.918095] [<ffffffff8150f9f9>] sd_remove+0x69/0xc0
[150550.918097] [<ffffffff814b83ff>] __device_release_driver+0x7f/0xf0
[150550.918099] [<ffffffff814b8495>] device_release_driver+0x25/0x40
[150550.918101] [<ffffffff814b7d34>] bus_remove_device+0x124/0x1b0
[150550.918103] [<ffffffff814b43de>] device_del+0x13e/0x250
[150550.918105] [<ffffffff8150796d>] __scsi_remove_device+0xcd/0xe0
[150550.918107] [<ffffffff81505f4f>] scsi_forget_host+0x6f/0x80
[150550.918108] [<ffffffff814f85a6>] scsi_remove_host+0x86/0x140
[150550.918112] [<ffffffffa0706a29>] sdebug_driver_remove+0x29/0x90
[scsi_debug]
[150550.918113] [<ffffffff814b83ff>] __device_release_driver+0x7f/0xf0
[150550.918114] [<ffffffff814b8495>] device_release_driver+0x25/0x40
[150550.918116] [<ffffffff814b7d34>] bus_remove_device+0x124/0x1b0
[150550.918117] [<ffffffff814b43de>] device_del+0x13e/0x250
[150550.918119] [<ffffffff814b4512>] device_unregister+0x22/0x70
[150550.918121] [<ffffffffa0706390>] sdebug_remove_adapter+0x50/0x80
[scsi_debug]
[150550.918123] [<ffffffffa070b825>] scsi_debug_exit+0x84/0x85f [scsi_debug]
[150550.918125] [<ffffffff810d8bac>] SyS_delete_module+0x18c/0x210
[150550.918129] [<ffffffff81763fa7>] ? int_with_check+0x27/0x69
[150550.918131] [<ffffffff81763d92>] system_call_fastpath+0x12/0x17
[150550.918132] ---[ end trace 1f300c62b0658728 ]---
[150550.935994] sd 7:0:0:1: [sdc] Synchronizing SCSI cache
[150550.936017] ------------[ cut here ]------------
On 02/18/2015 07:22 AM, Tomas Winkler wrote:
> reference count warning when removing scsi_debug device
>
> ARNING: CPU: 2 PID: 16732 at kernel/module.c:954 module_put+0xc9/0xd0()
> [150550.918033] Modules linked in: scsi_debug(-) pci_stub vboxpci(O)
> vboxnetadp(O) vboxnetflt(O) vboxdrv(O) nfsv3 rfcomm bnep bluetooth
> rpcsec_gss_krb5 nfsv4 hid_generic usbhid pl2303 hid usbserial
> snd_hda_codec_hdmi i915 x86_pkg_temp_thermal coretemp kvm_intel
> drm_kms_helper kvm drm nfsd snd_hda_codec_realtek
> snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel aesni_intel
> aes_x86_64 ablk_helper cryptd snd_hda_controller snd_hda_codec
> auth_rpcgss snd_hwdep snd_pcm oid_registry nfs_acl nfs snd_seq_midi
> snd_seq_midi_event snd_rawmidi snd_seq lrw gf128mul snd_seq_device
> snd_timer snd glue_helper microcode mei_me psmouse i2c_algo_bit mei
> video tpm_infineon tpm_tis r8169 soundcore serio_raw mii lockd lpc_ich
> mac_hid grace sunrpc fscache binfmt_misc nls_iso8859_1 parport_pc
> ppdev lp parport [last unloaded: scsi_debug]
> [150550.918069] CPU: 2 PID: 16732 Comm: modprobe Tainted: G W
> IO 3.19.0-rc5+ #1
> [150550.918070] Hardware name: Gigabyte Technology Co., Ltd.
> H87M-D3H/H87M-D3H, BIOS F6 08/03/2013
> [150550.918071] ffffffff81a85373 ffff880229f9bb88 ffffffff8175a6cb
> 0000000000000000
> [150550.918072] 0000000000000000 ffff880229f9bbc8 ffffffff8105382a
> ffffffff81ccf320
> [150550.918074] ffffffffa070fba0 ffffffffa070fba0 ffff88022a136010
> 0000000000800010
> [150550.918076] Call Trace:
> [150550.918081] [<ffffffff8175a6cb>] dump_stack+0x4c/0x65
> [150550.918084] [<ffffffff8105382a>] warn_slowpath_common+0x8a/0xc0
> [150550.918086] [<ffffffff8105391a>] warn_slowpath_null+0x1a/0x20
> [150550.918088] [<ffffffff810d6879>] module_put+0xc9/0xd0
> [150550.918090] [<ffffffff814f6e18>] scsi_device_put+0x48/0x50
> [150550.918092] [<ffffffff8150e5c2>] scsi_disk_put+0x32/0x50
> [150550.918093] [<ffffffff8150f8cc>] sd_shutdown+0x8c/0x150
> [150550.918095] [<ffffffff8150f9f9>] sd_remove+0x69/0xc0
> [150550.918097] [<ffffffff814b83ff>] __device_release_driver+0x7f/0xf0
> [150550.918099] [<ffffffff814b8495>] device_release_driver+0x25/0x40
> [150550.918101] [<ffffffff814b7d34>] bus_remove_device+0x124/0x1b0
> [150550.918103] [<ffffffff814b43de>] device_del+0x13e/0x250
> [150550.918105] [<ffffffff8150796d>] __scsi_remove_device+0xcd/0xe0
> [150550.918107] [<ffffffff81505f4f>] scsi_forget_host+0x6f/0x80
> [150550.918108] [<ffffffff814f85a6>] scsi_remove_host+0x86/0x140
> [150550.918112] [<ffffffffa0706a29>] sdebug_driver_remove+0x29/0x90
> [scsi_debug]
> [150550.918113] [<ffffffff814b83ff>] __device_release_driver+0x7f/0xf0
> [150550.918114] [<ffffffff814b8495>] device_release_driver+0x25/0x40
> [150550.918116] [<ffffffff814b7d34>] bus_remove_device+0x124/0x1b0
> [150550.918117] [<ffffffff814b43de>] device_del+0x13e/0x250
> [150550.918119] [<ffffffff814b4512>] device_unregister+0x22/0x70
> [150550.918121] [<ffffffffa0706390>] sdebug_remove_adapter+0x50/0x80
> [scsi_debug]
> [150550.918123] [<ffffffffa070b825>] scsi_debug_exit+0x84/0x85f [scsi_debug]
> [150550.918125] [<ffffffff810d8bac>] SyS_delete_module+0x18c/0x210
> [150550.918129] [<ffffffff81763fa7>] ? int_with_check+0x27/0x69
> [150550.918131] [<ffffffff81763d92>] system_call_fastpath+0x12/0x17
> [150550.918132] ---[ end trace 1f300c62b0658728 ]---
> [150550.935994] sd 7:0:0:1: [sdc] Synchronizing SCSI cache
> [150550.936017] ------------[ cut here ]------------
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
Hi Tomas,
I think that was fixed 3.19-rc7
commit dc4515ea26d6c7fed3d978cd2bd36adc0d057bc5
Author: Rusty Russell <[email protected]>
Date: Fri Jan 23 13:22:47 2015 +1030
scsi: always increment reference count
Thanks,
David
On Wed, Feb 18, 2015 at 7:38 PM, David Milburn <[email protected]> wrote:
> On 02/18/2015 07:22 AM, Tomas Winkler wrote:
>>
>> reference count warning when removing scsi_debug device
>>
>> ARNING: CPU: 2 PID: 16732 at kernel/module.c:954 module_put+0xc9/0xd0()
>> [150550.918033] Modules linked in: scsi_debug(-) pci_stub vboxpci(O)
>> vboxnetadp(O) vboxnetflt(O) vboxdrv(O) nfsv3 rfcomm bnep bluetooth
>> rpcsec_gss_krb5 nfsv4 hid_generic usbhid pl2303 hid usbserial
>> snd_hda_codec_hdmi i915 x86_pkg_temp_thermal coretemp kvm_intel
>> drm_kms_helper kvm drm nfsd snd_hda_codec_realtek
>> snd_hda_codec_generic ghash_clmulni_intel snd_hda_intel aesni_intel
>> aes_x86_64 ablk_helper cryptd snd_hda_controller snd_hda_codec
>> auth_rpcgss snd_hwdep snd_pcm oid_registry nfs_acl nfs snd_seq_midi
>> snd_seq_midi_event snd_rawmidi snd_seq lrw gf128mul snd_seq_device
>> snd_timer snd glue_helper microcode mei_me psmouse i2c_algo_bit mei
>> video tpm_infineon tpm_tis r8169 soundcore serio_raw mii lockd lpc_ich
>> mac_hid grace sunrpc fscache binfmt_misc nls_iso8859_1 parport_pc
>> ppdev lp parport [last unloaded: scsi_debug]
>> [150550.918069] CPU: 2 PID: 16732 Comm: modprobe Tainted: G W
>> IO 3.19.0-rc5+ #1
>> [150550.918070] Hardware name: Gigabyte Technology Co., Ltd.
>> H87M-D3H/H87M-D3H, BIOS F6 08/03/2013
>> [150550.918071] ffffffff81a85373 ffff880229f9bb88 ffffffff8175a6cb
>> 0000000000000000
>> [150550.918072] 0000000000000000 ffff880229f9bbc8 ffffffff8105382a
>> ffffffff81ccf320
>> [150550.918074] ffffffffa070fba0 ffffffffa070fba0 ffff88022a136010
>> 0000000000800010
>> [150550.918076] Call Trace:
>> [150550.918081] [<ffffffff8175a6cb>] dump_stack+0x4c/0x65
>> [150550.918084] [<ffffffff8105382a>] warn_slowpath_common+0x8a/0xc0
>> [150550.918086] [<ffffffff8105391a>] warn_slowpath_null+0x1a/0x20
>> [150550.918088] [<ffffffff810d6879>] module_put+0xc9/0xd0
>> [150550.918090] [<ffffffff814f6e18>] scsi_device_put+0x48/0x50
>> [150550.918092] [<ffffffff8150e5c2>] scsi_disk_put+0x32/0x50
>> [150550.918093] [<ffffffff8150f8cc>] sd_shutdown+0x8c/0x150
>> [150550.918095] [<ffffffff8150f9f9>] sd_remove+0x69/0xc0
>> [150550.918097] [<ffffffff814b83ff>] __device_release_driver+0x7f/0xf0
>> [150550.918099] [<ffffffff814b8495>] device_release_driver+0x25/0x40
>> [150550.918101] [<ffffffff814b7d34>] bus_remove_device+0x124/0x1b0
>> [150550.918103] [<ffffffff814b43de>] device_del+0x13e/0x250
>> [150550.918105] [<ffffffff8150796d>] __scsi_remove_device+0xcd/0xe0
>> [150550.918107] [<ffffffff81505f4f>] scsi_forget_host+0x6f/0x80
>> [150550.918108] [<ffffffff814f85a6>] scsi_remove_host+0x86/0x140
>> [150550.918112] [<ffffffffa0706a29>] sdebug_driver_remove+0x29/0x90
>> [scsi_debug]
>> [150550.918113] [<ffffffff814b83ff>] __device_release_driver+0x7f/0xf0
>> [150550.918114] [<ffffffff814b8495>] device_release_driver+0x25/0x40
>> [150550.918116] [<ffffffff814b7d34>] bus_remove_device+0x124/0x1b0
>> [150550.918117] [<ffffffff814b43de>] device_del+0x13e/0x250
>> [150550.918119] [<ffffffff814b4512>] device_unregister+0x22/0x70
>> [150550.918121] [<ffffffffa0706390>] sdebug_remove_adapter+0x50/0x80
>> [scsi_debug]
>> [150550.918123] [<ffffffffa070b825>] scsi_debug_exit+0x84/0x85f
>> [scsi_debug]
>> [150550.918125] [<ffffffff810d8bac>] SyS_delete_module+0x18c/0x210
>> [150550.918129] [<ffffffff81763fa7>] ? int_with_check+0x27/0x69
>> [150550.918131] [<ffffffff81763d92>] system_call_fastpath+0x12/0x17
>> [150550.918132] ---[ end trace 1f300c62b0658728 ]---
>> [150550.935994] sd 7:0:0:1: [sdc] Synchronizing SCSI cache
>> [150550.936017] ------------[ cut here ]------------
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
>> the body of a message to [email protected]
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>> Please read the FAQ at http://www.tux.org/lkml/
>>
>
> Hi Tomas,
>
> I think that was fixed 3.19-rc7
>
> commit dc4515ea26d6c7fed3d978cd2bd36adc0d057bc5
> Author: Rusty Russell <[email protected]>
> Date: Fri Jan 23 13:22:47 2015 +1030
>
> scsi: always increment reference count
>
Thanks, I was running in 3.19-rc5
Tomas