Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
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This mail has been scanned by InterScan MSS.
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No such problem in DRBD ver. 0.7.13
maybe it's the bug of the patch?
David Huang
-----Original Message-----
From: David Huang [mailto:david_huang at proware.com.tw]
Sent: Wednesday, August 31, 2005 4:38 PM
To: drbd-user at lists.linbit.com
Subject: drbd bug? (NULL pointer dereference at virtual address)
Dear DRBD users
Does anyone experience Unable to handle kernel NULL pointer error when starting syncing? I was running DRBD 0.7.11 with 8/19's patch (this patch updated the /proc/drbd codes with seq_file interface). My environment is kernel 2.6.13, LVM2 with XFS filesystem.
Cheers
David Haung
drbd0: Creating state block
drbd0: resync bitmap: bits=3276800 words=102400
drbd0: size = 12 GB (13107200 KB)
drbd0: Assuming that all blocks are out of sync (aka FullSync)
drbd0: 13107200 KB now marked out-of-sync by on disk bit-map.
drbd0: drbdsetup [6604]: cstate Unconfigured --> StandAlone
drbd0: drbdsetup [6607]: cstate StandAlone --> Unconnected
drbd0: drbd0_receiver [6608]: cstate Unconnected --> WFConnection
drbd0: drbd0_receiver [6608]: cstate WFConnection --> WFReportParams
drbd0: Handshake successful: DRBD Network Protocol version 74
drbd0: Connection established.
drbd0: I am(S): 0:00000001:00000001:00000001:00000001:00
drbd0: Peer(S): 0:00000001:00000001:00000001:00000001:00
drbd0: drbd0_receiver [6608]: cstate WFReportParams --> Connected
drbd0: I am inconsistent, but there is no sync? BOTH nodes inconsistent!
drbd0: Secondary/Unknown --> Secondary/Secondary
drbd0: I am(S): 0:00000001:00000001:00000001:00000001:01
drbd0: Peer(P): 1:00000002:00000001:00000001:00000001:11
drbd0: drbd0_receiver [6608]: cstate Connected --> WFBitMapT
drbd0: Secondary/Secondary --> Secondary/Primary
drbd0: drbd0_receiver [6608]: cstate WFBitMapT --> SyncTarget
drbd0: Resync started as SyncTarget (need to sync 13107200 KB [3276800 bits set]).
Unable to handle kernel NULL pointer dereference at virtual address 00000007
printing eip:
f8a062f1
*pde = 00000000
Oops: 0000 [#1]
SMP
Modules linked in: appletalk psnap llc drbd bonding i2c_i801 i2c_dev i2c_core mptspi mptscsih mptbase aic7xxx e1000 e100 sym53c8xx
CPU: 0
EIP: 0060:[<f8a062f1>] Not tainted VLI
EFLAGS: 00010282 (2.6.13)
EIP is at got_NegDReply+0x11/0xf0 [drbd]
eax: f1ed02b8 ebx: 00000018 ecx: 0120af60 edx: 00000011
esi: ffffffff edi: f1ed0000 ebp: 00000020 esp: f00c5f68
ds: 007b es: 007b ss: 0068
Process drbd0_asender (pid: 6609, threadinfo=f00c4000 task=ef5b2a40)
Stack: 00000000 ef5b2a40 00000282 c012898d 00000018 f1ed02d8 f1ed0000 f8a06738
f1ed0000 f1ed02b8 00000018 f00c5fa8 00000008 00000011 00000020 f1ed02b8
67027483 00000c00 0000007b 0000007b f1ed044c 00000000 f1ed0444 00000000
Call Trace:
[<c012898d>] flush_signals+0x4d/0x70
[<f8a06738>] drbd_asender+0x1d8/0x492 [drbd]
[<f8a0ba0c>] drbd_thread_setup+0x7c/0xf0 [drbd]
[<f8a0b990>] drbd_thread_setup+0x0/0xf0 [drbd]
[<c01011e5>] kernel_thread_helper+0x5/0x10
Code: d0 c1 f8 03 69 c0 2d e7 cf 72 89 44 24 04 e8 77 86 71 c7 e9 ee fe ff ff 89 f6 57 56 53 83 ec 10 8b 44 24 24 8b 7c 24 20 8b 70 10 <81> 7e 08 90 ec 9f f8 74 35 c7 04 24 40 25 a1 f8 8b 0d 48 be a1
<4>drbd0: PARTNER DISKLESS
drbd0: Resync aborted.
drbd0: drbd0_receiver [6608]: cstate SyncTarget --> Connected
drbd0: sock was shut down by peer
drbd0: drbd0_receiver [6608]: cstate Connected --> BrokenPipe
drbd0: short read expecting header on sock: r=0
Unable to handle kernel NULL pointer dereference at virtual address 00000504
printing eip:
c0485c45
*pde = 00000000
Oops: 0002 [#2]
SMP
Modules linked in: appletalk psnap llc drbd bonding i2c_i801 i2c_dev i2c_core mptspi mptscsih mptbase aic7xxx e1000 e100 sym53c8xx
CPU: 0
EIP: 0060:[<c0485c45>] Not tainted VLI
EFLAGS: 00010002 (2.6.13)
EIP is at _spin_lock_irqsave+0x5/0x20
eax: 00000202 ebx: 00000001 ecx: 00000001 edx: 00000504
esi: ef5b2a40 edi: f1ed0000 ebp: 00000001 esp: eed77ee4
ds: 007b es: 007b ss: 0068
Process drbd0_receiver (pid: 6608, threadinfo=eed76000 task=f025aa40)
Stack: c01295f7 00000001 00000001 f0393530 00000002 f1ed0444 f1ed0000 c0129f80
00000001 00000001 ef5b2a40 f8a0bcc0 00000001 ef5b2a40 eed77f20 00000286
f1ed0334 00000000 f1ed0000 00000000 f1ed03cc f8a05422 f1ed0444 00000000
Call Trace:
[<c01295f7>] force_sig_info+0x27/0xb0
[<c0129f80>] force_sig+0x20/0x30
[<f8a0bcc0>] _drbd_thread_stop+0x80/0x1f0 [drbd]
[<f8a05422>] drbd_disconnect+0xd2/0x720 [drbd]
[<c011e967>] printk+0x17/0x20
[<f8a02095>] drbd_recv_header+0xe5/0xf0 [drbd]
[<f8a02ed0>] receive_RSDataReply+0x0/0x190 [drbd]
[<f8a0521c>] drbdd+0x1c/0x150 [drbd]
[<f8a05da0>] drbdd_init+0x80/0x190 [drbd]
[<f8a0ba0c>] drbd_thread_setup+0x7c/0xf0 [drbd]
[<f8a0b990>] drbd_thread_setup+0x0/0xf0 [drbd]
[<c01011e5>] kernel_thread_helper+0x5/0x10
Code: 00 01 31 c9 89 c8 c3 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 90 f0 83 28 01 79 05 e8 45 e4 ff ff c3 8d 74 26 00 89 c2 9c 58 fa <f0> fe 0a 79 12 a9 00 02 00 00 74 01 fb f3 90 80 3a 00 7e f9 fa
<6>drbd0: worker terminated
drbd1: resync bitmap: bits=32768000 words=1024000
drbd1: size = 125 GB (131072000 KB)
drbd1: Assuming that all blocks are out of sync (aka FullSync)
drbd1: 131072000 KB now marked out-of-sync by on disk bit-map.
drbd1: drbdsetup [6812]: cstate Unconfigured --> StandAlone
drbd1: drbdsetup [6817]: cstate StandAlone --> Unconnected
drbd1: drbd1_receiver [6818]: cstate Unconnected --> WFConnection
drbd1: drbd1_receiver [6818]: cstate WFConnection --> WFReportParams
drbd1: Handshake successful: DRBD Network Protocol version 74
drbd1: Connection established.
drbd1: I am(S): 0:00000002:00000001:00000003:00000001:00
drbd1: Peer(S): 0:00000002:00000001:00000001:00000001:00
drbd1: I shall become SyncSource, but I am inconsistent!
drbd1: drbd1_receiver [6818]: cstate WFReportParams --> StandAlone
drbd1: error receiving ReportParams, l: 72!
drbd1: worker terminated
drbd1: meta connection shut down by peer.
drbd1: asender terminated
drbd1: drbd1_receiver [6818]: cstate StandAlone --> StandAlone
drbd1: Connection lost.
drbd1: receiver terminated
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