linux-kernel - Re: Oops in scsi_send_eh_cmnd 2.6.21-rc5-git6,7,10,13

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Message-Id: <200704052213.l35MDRRR015981@cichlid.com>
Date:	Thu, 5 Apr 2007 15:13:27 -0700
From:	Andrew Burgess <aab@...hlid.com>
To:	davem@...emloft.net, linux-kernel@...r.kernel.org,
	linux-scsi@...r.kernel.org
Subject: Re: Oops in scsi_send_eh_cmnd 2.6.21-rc5-git6,7,10,13

Chuck Ebbert wrote:

>Andrew Burgess wrote:
>
>> Apr  5 03:45:16 cichlid kernel: 3w-xxxx: scsi2: Command failed: status = 0xc7, flags = 0x7f, unit #4.
>> Apr  5 03:45:20 cichlid kernel: 3w-xxxx: scsi2: Command failed: status = 0xc7, flags = 0x80, unit #4.
>> Apr  5 03:47:20 cichlid kernel: 3w-xxxx: scsi0: Command failed: status = 0xc7, flags = 0x80, unit #0.
>> Apr  5 03:47:20 cichlid kernel: 3w-xxxx: scsi0: Command failed: status = 0xc7, flags = 0x80, unit #1.
>> Apr  5 04:00:08 cichlid kernel: 3w-xxxx: scsi0: Command failed: status = 0xc7, flags = 0x80, unit #0.
>...<BUG inside oops handler deleted>...
>> Apr  5 04:00:08 cichlid kernel: 
>> Apr  5 04:00:08 cichlid kernel: general protection fault: 0000 [1] PREEMPT SMP 
>> Apr  5 04:00:08 cichlid kernel: CPU 1 
>> Apr  5 04:00:08 cichlid kernel: Modules linked in: dm_multipath multipath linear raid456 xor raid1 md_mod act_police sch_ingress sch_sfq sch_cbq ipt_TOS cls_u32 sch_htb ipt_MASQUERADE ipt_LOG xt_multiport nf_nat_ftp nf_conntrack_ftp iptable_mangle iptable_nat nf_nat emi26 w83627hf hwmon_vid i2c_isa sunrpc ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack nfnetlink iptable_filter ip_tables x_tables freq_table sr_mod loop dm_mirror dm_mod video thermal sbs processor i2c_ec fan dock button battery asus_acpi ac parport_pc lp parport floppy nvram snd_usb_audio snd_ice1712 snd_ice17xx_ak4xxx snd_via82xx sg gameport snd_seq_dummy pcspkr snd_ak4xxx_adda snd_cs8427 snd_via82xx_modem snd_seq_oss snd_ac97_codec sata_via snd_i2c snd_seq_midi_event snd_seq skge i2c_viapro snd_mpu401_uart i2c_core k8temp ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc dsbr100 snd_usb_lib snd_rawmidi compat_ioctl32 snd_seq_device videodev v4l2_common v4l1_compat snd_hwdep !
 snd soundcore sisusbvga ftdi_sio usb_stor
>> Apr  5 04:00:08 cichlid kernel: ge serio_raw emi62 usbserial asix usbnet ata_piix 3w_xxxx ata_generic pata_via libata sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd
>> Apr  5 04:00:08 cichlid kernel: Pid: 386, comm: scsi_eh_0 Tainted: G   M   2.6.21-rc5-git10-1-slab-debug #1
>> Apr  5 04:00:08 cichlid kernel: RIP: 0010:[memcpy_c+11/32]  [memcpy_c+11/32] memcpy_c+0xb/0x20
>> Apr  5 04:00:08 cichlid kernel: RIP: 0010:[<ffffffff8026a7cb>]  [<ffffffff8026a7cb>] memcpy_c+0xb/0x20
>> Apr  5 04:00:08 cichlid kernel: RSP: 0000:ffff8100beebbce8  EFLAGS: 00010246
>> Apr  5 04:00:08 cichlid kernel: RAX: ffff8100b4978140 RBX: 0000000000002003 RCX: 000000000000000c
>> Apr  5 04:00:08 cichlid kernel: RDX: 0000000000000000 RSI: 6ddaa59200000000 RDI: ffff8100b4978140
>> Apr  5 04:00:08 cichlid kernel: RBP: ffff8100beebbe20 R08: 0000000000000002 R09: 0000000000000001
>> Apr  5 04:00:08 cichlid kernel: R10: 0000000000000000 R11: 00000000ffffffff R12: ffff8100b4978140
>> Apr  5 04:00:08 cichlid kernel: R13: ffffffff8807a1ce R14: ffff8100b4978058 R15: ffff8100beebc000
>> Apr  5 04:00:08 cichlid kernel: FS:  00002b615f4dc240(0000) GS:ffff8100bffae4c8(0000) knlGS:00000000f795eb90
>> Apr  5 04:00:08 cichlid kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
>> Apr  5 04:00:08 cichlid kernel: CR2: 00002b615f4b9000 CR3: 00000000a25ad000 CR4: 00000000000006e0
>> Apr  5 04:00:08 cichlid kernel: Process scsi_eh_0 (pid: 386, threadinfo ffff8100beeba000, task ffff8100bedd0100)
>> Apr  5 04:00:08 cichlid kernel: Stack:  ffffffff88055efc 0000271000000001 ffff8100b49780b4 ffff8100bef94508
>> Apr  5 04:00:08 cichlid kernel:  0000000200000002 000010000a240001 ffff810013404c78 0000000000000000
>> Apr  5 04:00:08 cichlid kernel:  ffff810000000001 ffffffffdead4ead ffffffffffffffff 0000000000000000
>> Apr  5 04:00:08 cichlid kernel: Call Trace:
>> Apr  5 04:00:08 cichlid kernel:  [_end+123674792/2126102956] :scsi_mod:scsi_send_eh_cmnd+0x3fc/0x480
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff88055efc>] :scsi_mod:scsi_send_eh_cmnd+0x3fc/0x480
>> Apr  5 04:00:08 cichlid kernel:  [thread_return+230/301] thread_return+0xe6/0x12d
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff8026b699>] thread_return+0xe6/0x12d
>> Apr  5 04:00:08 cichlid kernel:  [_end+123678124/2126102956] :scsi_mod:scsi_error_handler+0x0/0x540
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff88056c00>] :scsi_mod:scsi_error_handler+0x0/0x540
>> Apr  5 04:00:08 cichlid kernel:  [keventd_create_kthread+0/144] keventd_create_kthread+0x0/0x90
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff802a21c0>] keventd_create_kthread+0x0/0x90
>> Apr  5 04:00:08 cichlid kernel:  [kthread+218/272] kthread+0xda/0x110
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff80237b1a>] kthread+0xda/0x110
>> Apr  5 04:00:08 cichlid autoblacklist[9591]: src= proto= srcport= destport= srcname= destportname= srcportname= icmptype= icmpcode=
>> Apr  5 04:00:08 cichlid kernel:  [child_rip+10/18] child_rip+0xa/0x12
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff80268ea8>] child_rip+0xa/0x12
>> Apr  5 04:00:08 cichlid kernel:  [schedule_tail+124/240] schedule_tail+0x7c/0xf0
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff8022b90c>] schedule_tail+0x7c/0xf0
>> Apr  5 04:00:08 cichlid kernel:  [restore_args+0/48] restore_args+0x0/0x30
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff80268590>] restore_args+0x0/0x30
>> Apr  5 04:00:08 cichlid kernel:  [kthread+0/272] kthread+0x0/0x110
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff80237a40>] kthread+0x0/0x110
>> Apr  5 04:00:08 cichlid kernel:  [child_rip+0/18] child_rip+0x0/0x12
>> Apr  5 04:00:08 cichlid kernel:  [<ffffffff80268e9e>] child_rip+0x0/0x12
>> Apr  5 04:00:08 cichlid kernel: 
>> Apr  5 04:00:08 cichlid kernel: 
>> Apr  5 04:00:08 cichlid kernel: Code: f3 48 a5 89 d1 f3 a4 c3 66 0f 1f 44 00 00 0f 1f 80 00 00 00 
>> Apr  5 04:00:08 cichlid kernel: RIP  [memcpy_c+11/32] memcpy_c+0xb/0x20
>> Apr  5 04:00:08 cichlid kernel: RIP  [<ffffffff8026a7cb>] memcpy_c+0xb/0x20
>> Apr  5 04:00:08 cichlid kernel:  RSP <ffff8100beebbce8>

> Probably fixed by this:
> 
> Gitweb:     http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8cc574a3c5cea70229f243a6b57fd69e60491d82
> Commit:     8cc574a3c5cea70229f243a6b57fd69e60491d82
> Parent:     d80f0a4beb15d817bfbb18a29e5ffc1d9dc353ea
> Author:     David S. Miller <davem@...set.davemloft.net>
> AuthorDate: Mon Apr 2 14:21:55 2007 -0700
> Committer:  David S. Miller <davem@...set.davemloft.net>
> CommitDate: Mon Apr 2 14:26:22 2007 -0700
> 
>     [SCSI]: Fix scsi_send_eh_cmnd scatterlist handling
> 
>     This fixes a regression caused by commit:
> 
>     2dc611de5a3fd955cd0298c50691d4c05046db97

Sadly not. That patch was already in git10. I just tried
git13 and got the same memcpy oops in scsi_send_eh_cmnd.

David, do you see any other problems with scsi_send_eh_cmnd?

I've switched back to 2.6.18 which seems to not oops 
and am happy to try patches.

Andrew

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