linux-kernel - arm64: kernel v4.6-rc1 hangs on QEMU

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Message-ID: <20160329220502.GA14443@yury-N73SV>
Date:	Wed, 30 Mar 2016 01:05:02 +0300
From:	Yury Norov <ynorov@...iumnetworks.com>
To:	<linux-arm-kernel@...ts.infradead.org>
CC:	<linux-kernel@...r.kernel.org>
Subject: arm64: kernel v4.6-rc1 hangs on QEMU

Hi,

Checked  for both v4.6-rc1 and current master (1993b17).
Config: arm64 defconfig
QEMU: QEMU emulator version 2.3.0 (Debian 1:2.3+dfsg-5ubuntu9.2)

Stacktrace:
#0  arch_counter_get_cntvct () at
./arch/arm64/include/asm/arch_timer.h:121
#1  __delay (cycles=1024) at arch/arm64/lib/delay.c:31
#2  0xffffff8008340970 in __const_udelay (xloops=<optimized out>) at
arch/arm64/lib/delay.c:41
#3  0xffffff800815420c in panic (fmt=<optimized out>) at
kernel/panic.c:257
#4  0xffffff80080be588 in do_exit (code=11) at kernel/exit.c:666
#5  0xffffff8008089d08 in die (str=<optimized out>, regs=0xffffff8008aebe20 <init_thread_union+15904>, err=143867376) at arch/arm64/kernel/traps.c:298
#6  0xffffff8008089dec in arm64_notify_die (str=<optimized out>, regs=<optimized out>, info=<optimized out>, err=<optimized out>) at arch/arm64/kernel/traps.c:309
#7  0xffffff800808212c in do_undefinstr (regs=0xffffff8008aebe20 <init_thread_union+15904>) at arch/arm64/kernel/traps.c:399
#8  0xffffff8008a1fe08 in cpuinfo_store_boot_cpu () at arch/arm64/kernel/cpuinfo.c:252
#9  0xffffff8008a1fe08 in cpuinfo_store_boot_cpu () at arch/arm64/kernel/cpuinfo.c:252
#10 0xffffff8008a20388 in smp_prepare_boot_cpu () at arch/arm64/kernel/smp.c:403
#11 0xffffff8008a1d6ec in start_kernel () at init/main.c:511
#12 0xffffff80080811d8 in __mmap_switched () at arch/arm64/kernel/head.S:437
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Corefile can be found at:
https://drive.google.com/file/d/0B93nHerV55yNdFp5em54TEVnU2c/view?usp=sharing

Yury.