Re: [Xen-devel] [xen-4.4-testing test] 58818: regressions - FAIL

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Mon, 2015-06-22 at 08:24 +0000, osstest service user wrote:
>  test-armhf-armhf-xl-credit2   6 xen-boot                     fail   never 
> pass

For some reason I've only just noticed this panic which was solved a
while back (4.5-rc4 era) by:

commit e8bb583bec290a4f903cf065814af33ce49d4d0b
Author: denys drozdov <denys.drozdov@xxxxxxxxxxxxxxx>
Date:   Wed Feb 4 19:13:05 2015 +0200

    xen/arm: Call context_saved() with interrupts enabled during context switch

I think staging-4.4 is open for business so I'll backport.

Ian.

Jun 22 03:28:35.869124 (XEN) Assertion 'local_irq_is_enabled()' failed, line 
137, file spinlock.c
Jun 22 03:28:35.877066 (XEN) Xen BUG at spinlock.c:137
Jun 22 03:28:35.885059 (XEN) CPU0: Unexpected Trap: Undefined Instruction
Jun 22 03:28:35.885117 (XEN) ----[ Xen-4.4.3-pre  arm32  debug=y  Not tainted 
]----
Jun 22 03:28:35.893042 (XEN) CPU:    0
Jun 22 03:28:35.893072 (XEN) PC:     0023fb5c __bug+0x28/0x44
Jun 22 03:28:35.893101 (XEN) CPSR:   200000da MODE:Hypervisor
Jun 22 03:28:35.901067 (XEN)      R0: 002646dc R1: 00000000 R2: 00000000 R3: 
00000fff
Jun 22 03:28:35.909021 (XEN)      R4: 0025dc04 R5: 00000089 R6: 4fff023c R7: 
002e4020
Jun 22 03:28:35.909080 (XEN)      R8: 40005648 R9: 00000000 R10:00264e00 
R11:4002feec R12:00000001
Jun 22 03:28:35.917058 (XEN) HYP: SP: 4002fee4 LR: 0023fb5c
Jun 22 03:28:35.917108 (XEN) 
Jun 22 03:28:35.925051 (XEN)   VTCR_EL2: 80002558
Jun 22 03:28:35.925083 (XEN)  VTTBR_EL2: 00010000bef8e000
Jun 22 03:28:35.925111 (XEN) 
Jun 22 03:28:35.925133 (XEN)  SCTLR_EL2: 30cd187f
Jun 22 03:28:35.933046 (XEN)    HCR_EL2: 000000000038283f
Jun 22 03:28:35.933097 (XEN)  TTBR0_EL2: 00000000bfedf000
Jun 22 03:28:35.933141 (XEN) 
Jun 22 03:28:35.941034 (XEN)    ESR_EL2: 00000000
Jun 22 03:28:35.941065 (XEN)  HPFAR_EL2: 0000000000000000
Jun 22 03:28:35.941092 (XEN)      HDFAR: 00000000
Jun 22 03:28:35.949044 (XEN)      HIFAR: 00000000
Jun 22 03:28:35.949095 (XEN) 
Jun 22 03:28:35.949126 (XEN) Xen stack trace from sp=4002fee4:
Jun 22 03:28:35.949156 (XEN)    00000000 4002fefc 00229564 00000000 002e62a8 
4002ff2c 0021eac4 f8d1bf18
Jun 22 03:28:35.957068 (XEN)    d10013a0 44e014d3 00000000 4001f000 4001f000 
00000000 00000000 00000000
Jun 22 03:28:35.965047 (XEN)    00000000 4002ff3c 00228418 00000000 00000000 
4002ff4c 002426f4 00000000
Jun 22 03:28:35.973069 (XEN)    00000000 4002ff54 00242894 00000000 00242b6c 
00000000 ffffffff 68000000
Jun 22 03:28:35.981040 (XEN)    00000000 00000000 00000000 00000000 00000000 
00000000 00000000 00000000
Jun 22 03:28:35.989054 (XEN)    00000000 00000000 00000000 00000000 67a00000 
000001d3 00000000 00000000
Jun 22 03:28:35.997024 (XEN)    00000000 00000000 00000000 00000000 00000000 
00000000 00000000 00000000
Jun 22 03:28:36.005049 (XEN)    00000000 00000000 00000000 00000000 00000000 
00000000 00000000 00000000
Jun 22 03:28:36.005092 (XEN)    00000000 00000000 00000000 00000000 00000000 
0101f04f 0300f04f
Jun 22 03:28:36.013043 (XEN) Xen call trace:
Jun 22 03:28:36.021034 (XEN)    [<0023fb5c>] __bug+0x28/0x44 (PC)
Jun 22 03:28:36.021069 (XEN)    [<0023fb5c>] __bug+0x28/0x44 (LR)
Jun 22 03:28:36.021099 (XEN)    [<00229564>] _spin_lock_irq+0x48/0xc0
Jun 22 03:28:36.029074 (XEN)    [<0021eac4>] csched_context_saved+0x44/0x1cc
Jun 22 03:28:36.037024 (XEN)    [<00228418>] context_saved+0x58/0x80
Jun 22 03:28:36.037059 (XEN)    [<002426f4>] schedule_tail+0x134/0x2c8
Jun 22 03:28:36.045072 (XEN)    [<00242894>] continue_new_vcpu+0xc/0x70
Jun 22 03:28:36.045110 (XEN)    [<00242b6c>] context_switch+0xdc/0xf8
Jun 22 03:28:36.053025 (XEN) 
Jun 22 03:28:36.053053 (XEN) 
Jun 22 03:28:36.053075 (XEN) ****************************************
Jun 22 03:28:36.053106 (XEN) Panic on CPU 0:
Jun 22 03:28:36.061045 (XEN) CPU0: Unexpected Trap: Undefined Instruction
Jun 22 03:28:36.061102 (XEN) 
Jun 22 03:28:36.061139 (XEN) ****************************************



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