Bug#622570: linux-image-2.6.38-2-s390x: Unable to handle kernel pointer dereference at virtual kernel address (null).
Package: linux-2.6
Version: 2.6.38-3
Severity: important
I installed linux-image-2.6.38-2-s390x version 2.6.38-3 on my up-to-date Wheezy
system today. It runs in a virtual machine under z/VM 5.4.0 running in an LPAR
on an IBM z/890. It IPLed just fine. After the IPL, the system fell idle for a while.
Then a CRON job kicked off, which caused a page fault, which caused a kernel oops.
Here is the log:
[ 2697.934752] Unable to handle kernel pointer dereference at virtual kernel address (null)
[ 2697.982153] Oops: 0004 [#1] SMP
[ 2698.001730] Modules linked in: nfsd exportfs nfs lockd fscache nfs_acl auth_rpcgss sunrpc loop qeth_l3 qeth vmur ccwgroup ext3 jbd mbcache dm_mod dasd_eckd_mod dasd_diag_mod dasd_mod
[ 2698.003407] CPU: 0 Not tainted 2.6.38-2-s390x #1
[ 2698.003430] Process cron (pid: 1106, task: 000000001f962f78, ksp: 000000001fa0f9d0)
[ 2698.003455] Krnl PSW : 0404200180000000 000000000002c03e (pfault_interrupt+0xa2/0x138)
[ 2698.021870] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:0 CC:2 PM:0 EA:3
[ 2698.021902] Krnl GPRS: 0000000000000000 0000000000000001 0000000000000000 0000000000000001
[ 2698.021943] 000000001f962f78 0000000000518968 0000000090000002 000000001ff03280
[ 2698.021979] 0000000000000000 000000000064f000 000000001f962f78 0000000000002603
[ 2698.022016] 0000000006002603 0000000000000000 000000001ff7fe68 000000001ff7fe48
[ 2698.022096] Krnl Code: 000000000002c036: 5820d010 l %r2,16(%r13)
[ 2698.051390] 000000000002c03a: 1832 lr %r3,%r2
[ 2698.051407] 000000000002c03c: 1a31 ar %r3,%r1
[ 2698.051430] >000000000002c03e: ba23d010 cs %r2,%r3,16(%r13)
[ 2698.051448] 000000000002c042: a744fffc brc 4,2c03a
[ 2698.051466] 000000000002c046: a7290002 lghi %r2,2
[ 2698.051486] 000000000002c04a: e320d0000024 stg %r2,0(%r13)
[ 2698.051502] 000000000002c050: 07f0 bcr 15,%r0
[ 2698.051514] Call Trace:
[ 2698.051521] ([<000000001f962f78>] 0x1f962f78)
[ 2698.051537] [<000000000001acda>] do_extint+0xf6/0x138
[ 2698.051555] [<000000000039b6ca>] ext_no_vtime+0x30/0x34
[ 2698.052373] [<000000007d706e04>] 0x7d706e04
[ 2698.052387] Last Breaking-Event-Address:
[ 2698.052395] [<0000000000000000>] 0x0
[ 2698.052406]
[ 2698.053263] Kernel panic - not syncing: Fatal exception in interrupt
[ 2698.053316] CPU: 0 Tainted: G D 2.6.38-2-s390x #1
[ 2698.053502] Process cron (pid: 1106, task: 000000001f962f78, ksp: 000000001fa0f9d0)
[ 2698.053516] 0000000000000000 000000001ff7fa70 0000000000000002 0000000000000000
[ 2698.053539] 000000001ff7fb10 000000001ff7fa88 000000001ff7fa88 0000000000397b9e
[ 2698.053576] 0000000000000001 0000000000000000 000000001ff03280 0000000000000000
[ 2698.053623] 0000000000000008 0000000000000000 000000000000000e 0000000000000078
[ 2698.053674] 000000001ff7faf0 0000000000011b36 000000001ff7fa70 000000001ff7fab8
[ 2698.053740] Call Trace:
[ 2698.053762] ([<0000000000011a60>] show_trace+0x5c/0xa4)
[ 2698.053801] [<00000000003979de>] panic+0x9e/0x214
[ 2698.054443] [<0000000000012046>] die+0x15e/0x170
[ 2698.054485] [<000000000002c5d6>] do_no_context+0xd6/0xe0
[ 2698.054529] [<000000000002cd52>] do_protection_exception+0x46/0x2a0
[ 2698.054577] [<000000000039b208>] pgm_exit+0x0/0x4
[ 2698.054627] [<000000000002c03e>] pfault_interrupt+0xa2/0x138
[ 2698.054679] ([<000000001f962f78>] 0x1f962f78)
[ 2698.056408] [<000000000001acda>] do_extint+0xf6/0x138
[ 2698.056424] [<000000000039b6ca>] ext_no_vtime+0x30/0x34
[ 2698.056439] [<000000007d706e04>] 0x7d706e04
HCPGIR450W CP entered; disabled wait PSW 00020001 80000000 00000000 0001DE26
I have backed out to a 2.6.32 kernel until the problem is resolved. The 2.6.38
kernel is obviously unusable for me.
--
.''`. Stephen Powell
: :' :
`. `'`
`-
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