[Drbd-dev] DRBD8:Panics in lc_find due to null lcafterScsiMEDIUM_ERROR I.O error.

[Montrose, Ernest]

 Phil,
The one spot that was missed is in this patch.  I looked around for
other places but I am
Still not that everything is covered.

EM--

-----Original Message-----
From: drbd-dev-bounces at linbit.com [mailto:drbd-dev-bounces at linbit.com]
On Behalf Of Montrose, Ernest
Sent: Friday, February 02, 2007 9:20 AM
To: Montrose, Ernest; Philipp Reisner; drbd-dev at linbit.com
Subject: RE: [Drbd-dev] DRBD8:Panics in lc_find due to null
lcafterScsiMEDIUM_ERROR I.O error.

Phil,
I finally got to testing the fix this morning.  Unfortunately, the panic
just moved To another code path but still a lru_cache.c..Null lc. So
some more code paths Need fixing. Here is the trace:
------------[ cut here ]------------
kernel BUG at
/sandbox/emontros/devel/trunk/platform/drbd/src/drbd/lru_cache.c:214!
invalid opcode: 0000 [#1]
SMP
Modules linked in: drbd cn bridge ipv6 ipmi_devintf ipmi_si
ipmi_msghandler binfmt_misc dm_mirror video thermal processor fan
container button battery ac hw_random i2c_i801 i2c_core shpchp
pci_hotplug e1000 piix ide_cd cdrom raid1 dm_mod ide_disk ata_piix
libata sd_mod scsi_mod
CPU:    0
EIP:    0061:[<ee233fe7>]    Tainted: GF    VLI
EFLAGS: 00010046  (2.6.16.29-xen #1)
EIP is at lc_get+0x127/0x160 [drbd]
eax: 00000000  ebx: 00000058  ecx: 00000000  edx: 00000058
esi: 00000000  edi: eb547fb0  ebp: eab91e84  esp: eab91e78
ds: 007b  es: 007b  ss: 0069
Process drbd1_asender (pid: 6356, threadinfo=eab90000 task=ed55f570)
Stack: <0>00000058 00058007 eb547fb0 eab91ed0 ee231d78 ee2209be c072dd80
ed785c00
      eaf43280 eab91ea4 c014c33e eab91ebc 00000000 eab91ed0 ee21ea49
00000058
      002c0000 00000000 eb547c00 00000008 00058007 eb547fb0 eab91f28
ee2321a5
Call Trace:
 [<c0105431>] show_stack_log_lvl+0xa1/0xe0  [<c0105621>]
show_registers+0x181/0x200  [<c0105840>] die+0x100/0x1a0  [<c0105961>]
do_trap+0x81/0xc0  [<c0105c45>] do_invalid_op+0xa5/0xb0  [<c0105097>]
error_code+0x2b/0x30  [<ee231d78>] drbd_try_clear_on_disk_bm+0x28/0x280
[drbd]  [<ee2321a5>] __drbd_set_in_sync+0x1d5/0x330 [drbd]  [<ee22bb7b>]
got_BlockAck+0x9b/0x430 [drbd]  [<ee22ca04>] drbd_asender+0x3a4/0x5b1
[drbd]  [<ee236cac>] drbd_thread_setup+0x8c/0x100 [drbd]  [<c0102ec5>]
kernel_thread_helper+0x5/0x10
Code: 83 ff 46 38 f0 0f ba 76 28 00 31 c0 eb 92 0f ba 6e 28 02 f0 0f ba
76 28 00 e9 68 ff ff ff 0f 0b d7 00 44 5e 24 ee e9 01 ff ff ff <0f> 0b
d6 00 44 5e 24 ee e9 e9 fe ff ff 0f 0b d9 00 44 5e 24 ee  <0>Fatal
exception: panic in 5 seconds
 

-----Original Message-----
From: drbd-dev-bounces at linbit.com [mailto:drbd-dev-bounces at linbit.com]
On Behalf Of Montrose, Ernest
Sent: Wednesday, January 31, 2007 12:33 PM
To: Philipp Reisner; drbd-dev at linbit.com
Subject: RE: [Drbd-dev] DRBD8:Panics in lc_find due to null lc
afterScsiMEDIUM_ERROR I.O error.

Phil,
Thank you very much.That was fast!!..This should be quick to verify!!
Just have to run it
On my machine with the broken disk.  Sweet!! I'll let you know.

EM-- 

-----Original Message-----
From: drbd-dev-bounces at linbit.com [mailto:drbd-dev-bounces at linbit.com]
On Behalf Of Philipp Reisner
Sent: Wednesday, January 31, 2007 12:26 PM
To: drbd-dev at linbit.com
Cc: Montrose, Ernest
Subject: Re: [Drbd-dev] DRBD8:Panics in lc_find due to null lc after
ScsiMEDIUM_ERROR I.O error.

Am Mittwoch, 31. Januar 2007 14:58 schrieb Montrose, Ernest:

Just for the records, this triggered this commit:
http://lists.linbit.com/pipermail/drbd-cvs/2007-January/001458.html

-Phil
-- 
: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Vivenotgasse 48, 1120 Vienna, Austria        http://www.linbit.com :
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