* [Qemu-devel] [Bug 1751674] Re: qemu-system-arm segmentation fault trying to dump VM memory
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
@ 2018-02-26 0:32 ` Gustavo Moreira
2018-03-15 14:46 ` Peter Maydell
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Gustavo Moreira @ 2018-02-26 0:32 UTC (permalink / raw)
To: qemu-devel
Yeah, the page fails uploading the code dump file. Actually it seems to
upload the whole file but then it shows a "Timeout error" error. Anyway,
let me know if you need that file and if so how can I send it to you.
** Description changed:
Qemu segfaults trying to generate a VM memory dump:
- $ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:DE:AD:BE:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
+ $ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault trying to dump VM memory
Status in QEMU:
New
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread* [Qemu-devel] [Bug 1751674] Re: qemu-system-arm segmentation fault trying to dump VM memory
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
2018-02-26 0:32 ` [Qemu-devel] [Bug 1751674] " Gustavo Moreira
@ 2018-03-15 14:46 ` Peter Maydell
2018-03-15 14:59 ` Peter Maydell
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Peter Maydell @ 2018-03-15 14:46 UTC (permalink / raw)
To: qemu-devel
What's happening here is that the memory range you're asking to dump
(physaddrs 0 to 0x3fffffff) includes a lot of devices, including the
interrupt controller, which is at 0x1e000000. There's a longstanding bug
in the GIC code where it will crash if you try to access its per-CPU
register bank from some context that isn't a guest CPU (including the
monitor or the QEMU gdb stub), because it doesn't know which CPU's
version of the registers you wanted. That's what you've run into here.
However, I suspect you didn't really want to try to take a memory dump of a pile of devices. The RAM in the vexpress-a9 board starts at 0x60000000, so if you wanted the RAM then try
pmemsave 0x60000000 0x9fffffff memory.dmp
--
You received this bug notification because you are a member of qemu-
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https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault trying to dump VM memory
Status in QEMU:
New
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread* [Qemu-devel] [Bug 1751674] Re: qemu-system-arm segmentation fault trying to dump VM memory
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
2018-02-26 0:32 ` [Qemu-devel] [Bug 1751674] " Gustavo Moreira
2018-03-15 14:46 ` Peter Maydell
@ 2018-03-15 14:59 ` Peter Maydell
2018-07-06 13:30 ` Peter Maydell
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Peter Maydell @ 2018-03-15 14:59 UTC (permalink / raw)
To: qemu-devel
LP:1602247 is the bug for the similar issue when using the gdb stub.
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault trying to dump VM memory
Status in QEMU:
New
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread* [Qemu-devel] [Bug 1751674] Re: qemu-system-arm segmentation fault trying to dump VM memory
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
` (2 preceding siblings ...)
2018-03-15 14:59 ` Peter Maydell
@ 2018-07-06 13:30 ` Peter Maydell
2021-05-09 15:04 ` [Bug 1751674] Re: qemu-system-arm segmentation fault using pmemsave on the interrupt controller registers Thomas Huth
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: Peter Maydell @ 2018-07-06 13:30 UTC (permalink / raw)
To: qemu-devel
** Changed in: qemu
Status: New => Confirmed
** Summary changed:
- qemu-system-arm segmentation fault trying to dump VM memory
+ qemu-system-arm segmentation fault using pmemsave on the interrupt controller registers
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault using pmemsave on the interrupt
controller registers
Status in QEMU:
Confirmed
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug 1751674] Re: qemu-system-arm segmentation fault using pmemsave on the interrupt controller registers
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
` (3 preceding siblings ...)
2018-07-06 13:30 ` Peter Maydell
@ 2021-05-09 15:04 ` Thomas Huth
2021-05-09 20:47 ` Peter Maydell
2021-05-10 7:43 ` Thomas Huth
6 siblings, 0 replies; 8+ messages in thread
From: Thomas Huth @ 2021-05-09 15:04 UTC (permalink / raw)
To: qemu-devel
The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting the bug state to "Incomplete" now.
If the bug has already been fixed in the latest upstream version of QEMU,
then please close this ticket as "Fix released".
If it is not fixed yet and you think that this bug report here is still
valid, then you have two options:
1) If you already have an account on gitlab.com, please open a new ticket
for this problem in our new tracker here:
https://gitlab.com/qemu-project/qemu/-/issues
and then close this ticket here on Launchpad (or let it expire auto-
matically after 60 days). Please mention the URL of this bug ticket on
Launchpad in the new ticket on GitLab.
2) If you don't have an account on gitlab.com and don't intend to get
one, but still would like to keep this ticket opened, then please switch
the state back to "New" or "Confirmed" within the next 60 days (other-
wise it will get closed as "Expired"). We will then eventually migrate
the ticket automatically to the new system (but you won't be the reporter
of the bug in the new system and thus you won't get notified on changes
anymore).
Thank you and sorry for the inconvenience.
** Changed in: qemu
Status: Confirmed => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault using pmemsave on the interrupt
controller registers
Status in QEMU:
Incomplete
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug 1751674] Re: qemu-system-arm segmentation fault using pmemsave on the interrupt controller registers
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
` (4 preceding siblings ...)
2021-05-09 15:04 ` [Bug 1751674] Re: qemu-system-arm segmentation fault using pmemsave on the interrupt controller registers Thomas Huth
@ 2021-05-09 20:47 ` Peter Maydell
2021-05-10 7:43 ` Thomas Huth
6 siblings, 0 replies; 8+ messages in thread
From: Peter Maydell @ 2021-05-09 20:47 UTC (permalink / raw)
To: qemu-devel
Still valid.
** Changed in: qemu
Status: Incomplete => Confirmed
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault using pmemsave on the interrupt
controller registers
Status in QEMU:
Confirmed
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug 1751674] Re: qemu-system-arm segmentation fault using pmemsave on the interrupt controller registers
2018-02-26 0:25 [Qemu-devel] [Bug 1751674] [NEW] qemu-system-arm segmentation fault trying to dump VM memory Gustavo Moreira
` (5 preceding siblings ...)
2021-05-09 20:47 ` Peter Maydell
@ 2021-05-10 7:43 ` Thomas Huth
6 siblings, 0 replies; 8+ messages in thread
From: Thomas Huth @ 2021-05-10 7:43 UTC (permalink / raw)
To: qemu-devel
This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:
https://gitlab.com/qemu-project/qemu/-/issues/247
** Changed in: qemu
Status: Confirmed => Expired
** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #247
https://gitlab.com/qemu-project/qemu/-/issues/247
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1751674
Title:
qemu-system-arm segmentation fault using pmemsave on the interrupt
controller registers
Status in QEMU:
Expired
Bug description:
Qemu segfaults trying to generate a VM memory dump:
$ QEMU_AUDIO_DRV=none qemu-git-src/arm-softmmu/qemu-system-arm -M vexpress-a9 -smp 4 -m 1024 -machine secure=off,dump-guest-core=on -kernel linux-4.9.75/arch/arm/boot/zImage -append "root=/dev/mmcblk0 rw rootfstype=ext4 mem=1024M net.ifnames=0 console=ttyAMA0" -dtb vexpress-v2p-ca9.dtb -sd armv7-hd.qcow2 -netdev tap,ifname=tap_armv7,script=no,downscript=no,id=net0 -device virtio-net-device,mac=00:AA:AD:BB:FF:02,netdev=net0 -monitor stdio -serial vc -loadvm SS0
QEMU 2.11.50 monitor - type 'help' for more information
(qemu) pmemsave 0 0x3FFFFFFF memory.dmp
Segmentation fault (core dumped)
$ git rev-parse HEAD
b384cd95eb9c6f73ad84ed1bb0717a26e29cc78f
It's the second time I try to submit this bug, I think last time it
failed because the attached core dump size (400M compressed). Have a
look if you can get that file, otherwise I will try to update this
ticket once it's created:
(Error ID: OOPS-65553b72bc14be693eb1e37814ff9267)
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1751674/+subscriptions
^ permalink raw reply [flat|nested] 8+ messages in thread