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Bug#425393: linux-2.6: [s390] kernel panic while loading initramfs (hercules emulator)



Package: linux-2.6
Severity: important
Version: 2.6.20-3

The kernel crashes while the initramfs is being loaded. I've tested both
2.6.20-3 and 2.6.21-2. 2.6.18-4 works fine.

The trace below is from .21-2.

checking if image is initramfs...
 it is
HHCCP014I CPU0000: Specification exception CODE=0006 ILC=4
CPU0000:  PSW=070C2000 80306B48 INST=83030308     DIAG  0,3,776(0)
CPU0000:  V:00000308:K:06=00000000 00000000 00000000 00000000  ................
CPU0000: GR00=00B2E000  GR01=00000000  GR02=00B2E000  GR03=00000006
CPU0000: GR04=80063A3A  GR05=7FE165E0  GR06=00000000  GR07=00000000
CPU0000: GR08=00000000  GR09=00000000  GR10=00315A3C  GR11=003175C0
CPU0000: GR12=00000020  GR13=80306B22  GR14=80306B36  GR15=0FFC1E58
CPU0000: CR00=14B54E12  CR01=0031B07F  CR02=00011180  CR03=00000000
CPU0000: CR04=00000001  CR05=00011180  CR06=10000000  CR07=0031B07F
CPU0000: CR08=00000000  CR09=00000000  CR10=00000000  CR11=00000000
CPU0000: CR12=00000000  CR13=0031B07F  CR14=EB000000  CR15=00000000
HHCCP014I CPU0000: Specification exception CODE=0006 ILC=4
CPU0000:  PSW=070C2000 8030783E INST=83120224     DIAG  1,2,548(0)
CPU0000:  V:00000224:K:06=00000000 00000000 00000000 00000000  ................
CPU0000: GR00=00000001  GR01=00000000  GR02=0FF17000  GR03=0031EC84
CPU0000: GR04=80307828  GR05=80063116  GR06=00000000  GR07=00000000
CPU0000: GR08=00000000  GR09=00000000  GR10=00315A3C  GR11=003175CC
CPU0000: GR12=00000000  GR13=80307736  GR14=80307828  GR15=0FFC1DF0
CPU0000: CR00=14B54E12  CR01=0031B07F  CR02=00011180  CR03=00000000
CPU0000: CR08=00000000  CR09=00000000  CR10=00000000  CR11=00000000
CPU0000: CR12=00000000  CR13=0031B07F  CR14=EB000000  CR15=00000000
Freeing initrd memory: 3260k freed
specification exception: 0006  #1!
CPU:    0    Not tainted
Process swapper (pid: 1, task: 00b3cb28, ksp: 0ffc1bc0)
Krnl PSW : 070c2000 8030783e (hypfs_diag_init+0x10e/0x1b8)
Krnl GPRS: 00000001 00000000 0ff17000 0031ec84
           80307828 80063116 00000000 00000000
           00000000 00000000 00315a3c 003175cc
           00000000 80307736 80307828 0ffc1df0
Krnl Code: 58 30 30 00 a7 48 00 00 43 40 30 00 89 40 00 04 a7 4a 00 0f
Call Trace:
( <0000000000307828>! hypfs_diag_init+0xf8/0x1b8)
  <0000000000307696>! hypfs_init+0x36/0xd0
  <00000000002fe2e6>! init+0x192/0x334
  <0000000000019cd2>! kernel_thread_starter+0x6/0xc
  <0000000000019ccc>! kernel_thread_starter+0x0/0xc

 <0>Kernel panic - not syncing: Attempted to kill init
CPU0000: SIGP Stop (05) CPU0001, PARM 00000000: CC 0
CPU0000: SIGP Store status (0E) CPU0001, PARM 00B36000: CC 0
HHCCP011I CPU0000: Disabled wait state
          PSW=000A0000 80032C56

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