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From: Christoph Hellwig <hch@lst.de>
To: Guenter Roeck <linux@roeck-us.net>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	Peter Maydell <peter.maydell@linaro.org>
Subject: Re: [PATCH 1/6] syscalls: use uaccess_kernel in addr_limit_user_check
Date: Mon, 20 Jul 2020 12:01:04 +0200	[thread overview]
Message-ID: <20200720100104.GA20196@lst.de> (raw)
In-Reply-To: <fe1d4a6d-e32d-6994-a08b-40134000e988@roeck-us.net>

To try to reproduce your report I built a mps2_defconfig kernel
and then run the qemu command line manually extraced from your
script below, using a mainline qemu built for arm-softmmu, but it
crashes with the following message even for the baseline kernel.

qemu: fatal: Lockup: can't escalate 3 to HardFault (current priority -1)

R00=00000000 R01=00000000 R02=00000000 R03=00000000
R04=00000000 R05=00000000 R06=00000000 R07=00000000
R08=00000000 R09=00000000 R10=00000000 R11=00000000
R12=00000000 R13=ffffffe0 R14=fffffff9 R15=00000000
XPSR=40000003 -Z-- A handler
FPSCR: 00000000

Does anyone have an idea what this means?


---
/opt/qemu/bin/qemu-system-arm \
	-M mps2-an385 \
	-cpu cortex-m3 \
	-dtb arch/arm/boot/dts/mps2-an385.dtb \
	-kernel vmlinux \
	-no-reboot \
        -snapshot -m 16 \
        -initrd ~/images/rootfs-arm-m3.cpio \
        -append 'panic=-1' \
	-bios ~/images/mps2-boot.axf \
	-nographic -monitor null -serial stdio

WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Guenter Roeck <linux@roeck-us.net>
Cc: linux-arch@vger.kernel.org,
	Peter Maydell <peter.maydell@linaro.org>,
	Vladimir Murzin <vladimir.murzin@arm.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/6] syscalls: use uaccess_kernel in addr_limit_user_check
Date: Mon, 20 Jul 2020 12:01:04 +0200	[thread overview]
Message-ID: <20200720100104.GA20196@lst.de> (raw)
In-Reply-To: <fe1d4a6d-e32d-6994-a08b-40134000e988@roeck-us.net>

To try to reproduce your report I built a mps2_defconfig kernel
and then run the qemu command line manually extraced from your
script below, using a mainline qemu built for arm-softmmu, but it
crashes with the following message even for the baseline kernel.

qemu: fatal: Lockup: can't escalate 3 to HardFault (current priority -1)

R00=00000000 R01=00000000 R02=00000000 R03=00000000
R04=00000000 R05=00000000 R06=00000000 R07=00000000
R08=00000000 R09=00000000 R10=00000000 R11=00000000
R12=00000000 R13=ffffffe0 R14=fffffff9 R15=00000000
XPSR=40000003 -Z-- A handler
FPSCR: 00000000

Does anyone have an idea what this means?


---
/opt/qemu/bin/qemu-system-arm \
	-M mps2-an385 \
	-cpu cortex-m3 \
	-dtb arch/arm/boot/dts/mps2-an385.dtb \
	-kernel vmlinux \
	-no-reboot \
        -snapshot -m 16 \
        -initrd ~/images/rootfs-arm-m3.cpio \
        -append 'panic=-1' \
	-bios ~/images/mps2-boot.axf \
	-nographic -monitor null -serial stdio

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  reply	other threads:[~2020-07-20 10:01 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-14 10:54 clean up address limit helpers v2 Christoph Hellwig
2020-07-14 10:54 ` Christoph Hellwig
2020-07-14 10:55 ` [PATCH 1/6] syscalls: use uaccess_kernel in addr_limit_user_check Christoph Hellwig
2020-07-14 10:55   ` Christoph Hellwig
2020-07-18  1:38   ` Guenter Roeck
2020-07-18  1:38     ` Guenter Roeck
2020-07-18  9:48     ` Christoph Hellwig
2020-07-18  9:48       ` Christoph Hellwig
2020-07-18 14:54       ` Guenter Roeck
2020-07-18 14:54         ` Guenter Roeck
2020-07-20 10:01         ` Christoph Hellwig [this message]
2020-07-20 10:01           ` Christoph Hellwig
2020-07-20 14:55           ` Guenter Roeck
2020-07-20 14:55             ` Guenter Roeck
2020-07-20 15:28             ` Peter Maydell
2020-07-20 15:28               ` Peter Maydell
2020-07-20 22:10       ` Guenter Roeck
2020-07-20 22:10         ` Guenter Roeck
2020-07-21  4:58         ` Christoph Hellwig
2020-07-21  4:58           ` Christoph Hellwig
2020-07-21  5:15           ` Guenter Roeck
2020-07-21  5:15             ` Guenter Roeck
2020-07-21  5:20             ` Christoph Hellwig
2020-07-21  5:20               ` Christoph Hellwig
2020-07-21  5:30               ` Guenter Roeck
2020-07-21  5:30                 ` Guenter Roeck
2020-07-21  5:35                 ` Christoph Hellwig
2020-07-21  5:35                   ` Christoph Hellwig
2020-07-14 10:55 ` [PATCH 2/6] nds32: use uaccess_kernel in show_regs Christoph Hellwig
2020-07-14 10:55   ` Christoph Hellwig
2020-07-14 10:55 ` [PATCH 3/6] riscv: include <asm/pgtable.h> in <asm/uaccess.h> Christoph Hellwig
2020-07-14 10:55   ` Christoph Hellwig
2020-07-14 10:55 ` [PATCH 4/6] uaccess: remove segment_eq Christoph Hellwig
2020-07-14 10:55   ` Christoph Hellwig
2020-07-14 15:27   ` Linus Torvalds
2020-07-14 15:27     ` Linus Torvalds
2020-07-14 10:55 ` [PATCH 5/6] uaccess: add force_uaccess_{begin,end} helpers Christoph Hellwig
2020-07-14 10:55   ` Christoph Hellwig
2020-07-14 15:29   ` Linus Torvalds
2020-07-14 15:29     ` Linus Torvalds
2020-07-14 10:55 ` [PATCH 6/6] exec: use force_uaccess_begin during exec and exit Christoph Hellwig
2020-07-14 10:55   ` Christoph Hellwig
2020-07-15  3:33   ` Eric W. Biederman
2020-07-15  3:33     ` Eric W. Biederman
2020-07-15  6:06     ` Christoph Hellwig
2020-07-15  6:06       ` Christoph Hellwig
2020-07-16 23:49 ` clean up address limit helpers v2 Andrew Morton
2020-07-16 23:49   ` Andrew Morton
2020-07-17  6:06   ` Christoph Hellwig
2020-07-17  6:06     ` Christoph Hellwig
2020-07-20 15:54 ` [PATCH 0/6] arm: don't call addr_limit_user_check for nommu Christoph Hellwig
2020-07-20 15:54   ` Christoph Hellwig
  -- strict thread matches above, loose matches on Subject: below --
2020-07-10 13:57 clean up address limit helpers Christoph Hellwig
2020-07-10 13:57 ` [PATCH 1/6] syscalls: use uaccess_kernel in addr_limit_user_check Christoph Hellwig
2020-07-10 13:57   ` Christoph Hellwig

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