[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
Hi Laurent, confirm that after changing the network adapter to the
e1000e it worked flawlessly for hours with 4 cores on Macbook Pro.
Thanks!
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https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
I just built from latest master and got the kernel trace below.
❯ qemu-system-ppc64 --version
QEMU emulator version 4.2.90 (v4.2.0-2811-g83019e81d1-dirty)
Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,hostfwd=tcp::$LocalSSHPort-:22 -device
rtl8139,netdev=network01 \
[ 376.219450] watchdog: BUG: soft lockup - CPU#3 stuck for 22s! [swapper/3:0]
[ 376.226712] Modules linked in: ctr(E) vmx_crypto(E) gf128mul(E) sunrpc(E)
ip_tables(E) x_tables(E) autofs4(E) ext4(E) crc16(E) mbcache(E) jbd2(E)
crc32c_generic(E) virtio_blk(E) 8139too(E) virtio_pci(E) virtio_ring(E)
8139cp(E) virtio(E) mii(E)
[ 376.235692] CPU: 3 PID: 0 Comm: swapper/3 Tainted: GE
5.5.0-rc5-powerpc64le #1 Debian 5.5~rc5-1~exp1
[ 376.236245] NIP: c000af8c LR: c0019664 CTR: c0af2c80
[ 376.236365] REGS: c000fffcf920 TRAP: 0901 Tainted: GE
(5.5.0-rc5-powerpc64le Debian 5.5~rc5-1~exp1)
[ 376.236376] MSR: 80009033 CR: 44002248
XER:
[ 376.236479] CFAR: c0af2ce0 IRQMASK: 0
GPR00: c0af2e38 c000fffcfbb0 c1365700
0500
GPR04: fef9 002be1f69c00 002beaa729fa
c000fffec880
GPR08: 0004 80ff 0001
c008004c6ff0
GPR12: 2000 c000fffec880
[ 376.238452] NIP [c000af8c] replay_interrupt_return+0x0/0x4
[ 376.238488] LR [c0019664] arch_local_irq_restore.part.0+0x54/0x70
[ 376.238984] Call Trace:
[ 376.240707] [c000fffcfbb0] [c08ce910]
napi_gro_receive+0x1e0/0x210 (unreliable)
[ 376.240824] [c000fffcfbd0] [c0af2e38]
_raw_spin_unlock_irqrestore+0x98/0xb0
[ 376.242114] [c000fffcfbf0] [c008004c5588] cp_rx_poll+0x580/0x610
[8139cp]
[ 376.242131] [c000fffcfcf0] [c08cf6c8] net_rx_action+0x1f8/0x550
[ 376.242139] [c000fffcfe10] [c0af3a8c] __do_softirq+0x16c/0x3d8
[ 376.242172] [c000fffcff30] [c01329e8] irq_exit+0xd8/0x120
[ 376.242181] [c000fffcff60] [c0019fb4] __do_irq+0x84/0x1c0
[ 376.242193] [c000fffcff90] [c002cbec] call_do_irq+0x14/0x24
[ 376.242201] [c000fd4b7980] [c001a178] do_IRQ+0x88/0xf0
[ 376.242209] [c000fd4b79c0] [c0008d98]
hardware_interrupt_common+0x158/0x160
[ 376.242243] --- interrupt: 501 at plpar_hcall_norets+0x1c/0x28
LR = check_and_cede_processor+0x48/0x60
[ 376.243892] [c000fd4b7cc0] [c000fd4b7cf0] 0xc000fd4b7cf0
(unreliable)
[ 376.243922] [c000fd4b7d20] [c086c710] shared_cede_loop+0x50/0x160
[ 376.243942] [c000fd4b7d50] [c0868844]
cpuidle_enter_state+0xa4/0x590
[ 376.243953] [c000fd4b7dd0] [c0868dcc] cpuidle_enter+0x4c/0x70
[ 376.243983] [c000fd4b7e10] [c0177d4c] call_cpuidle+0x4c/0x90
[ 376.243991] [c000fd4b7e30] [c0178358] do_idle+0x2f8/0x400
[ 376.243998] [c000fd4b7ed0] [c01786a8] cpu_startup_entry+0x38/0x40
[ 376.244011] [c000fd4b7f00] [c004e910] start_secondary+0x640/0x670
[ 376.244020] [c000fd4b7f90] [c000b354]
start_secondary_prolog+0x10/0x14
[ 376.244093] Instruction dump:
[ 376.244751] 7d200026 618c8000 2c030900 4182e348 2c030500 4182dcd0 2c030f00
4182f318
[ 376.244797] 2c030a00 4182ffc8 6000 6000 <4e800020> 7c781b78 480003d9
480003f1
--
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https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93
[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
Hi, any news about this? Can I provide any additional info since it might be a
Mac issue.
Thanks
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
Hi Laurent, I'm on a MacOS Mojave running Qemu installed by homebrew
from master branch on the day I've opened the bug.
The option to install was: `brew install --HEAD qemu -s --verbose`.
Maybe it's a Mac related problem?
--
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https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
I just reverted to 4.2.0 and it works fine. No freezes for the past
hour.
❯ qemu-system-ppc64 --version
QEMU emulator version 4.2.0
Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
Couldn't bisect to find the bad commit.
Carlos
--
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https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
It's soft emulation, running Qemu 4.2.50 (from master branch) on MacOS
Mojave.
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https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1867786] Re: Qemu PPC64 freezes with multi-core CPU
** Tags added: ppc
--
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devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1867786] [NEW] Qemu PPC64 freezes with multi-core CPU
Public bug reported:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks: {
3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these freezes.
** Affects: qemu
Importance: Undecided
Status: New
--
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https://bugs.launchpad.net/bugs/1867786
Title:
Qemu PPC64 freezes with multi-core CPU
Status in QEMU:
New
Bug description:
I installed Debian 10 on a Qemu PPC64 VM running with the following
flags:
qemu-system-ppc64 \
-nographic -nodefaults -monitor pty -serial stdio \
-M pseries -cpu POWER9 -smp cores=4,threads=1 -m 4G \
-drive file=debian-ppc64el-qemu.qcow2,format=qcow2,if=virtio \
-netdev user,id=network01,$ports -device rtl8139,netdev=network01 \
Within a couple minutes on any operation (could be a Go application or simply
changing the hostname with hostnamectl, the VM freezes and prints this on the
console:
```
root@debian:~# [ 950.428255] rcu: INFO: rcu_sched self-detected stall on CPU
[ 950.428453] rcu: 3-: (5318 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=2544
[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s! [zsh:462]
Message from syslogd@debian at Mar 17 11:35:24 ...
kernel:[ 976.244481] watchdog: BUG: soft lockup - CPU#3 stuck for 23s!
[zsh:462]
[ 980.110018] rcu: INFO: rcu_sched detected expedited stalls on CPUs/tasks:
{ 3-... } 5276 jiffies s: 93 root: 0x8/.
[ 980.77] rcu: blocking rcu_node structures:
[ 1013.442268] rcu: INFO: rcu_sched self-detected stall on CPU
[ 1013.442365] rcu: 3-: (21071 ticks this GP)
idle=8e2/1/0x4004 softirq=5957/5960 fqs=9342
```
If I change to 1 core on the command line, I haven't seen these
freezes.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1867786/+subscriptions
[Bug 1847232] Re: qemu TCG in s390x mode issue with calculating HASH
Tried applying the -cpu parameter into Qemu 4.1.1 but I got: qemu-system-riscv64: unable to find CPU model 'qemu' My command is: qemu-system-riscv64 \ -machine virt \ -cpu qemu,vx=off \ -nographic \ -smp 4 \ -m 4G \ -bios fw_payload.bin \ -device virtio-blk-device,drive=hd0 \ -object rng-random,filename=/dev/urandom,id=rng0 \ -device virtio-rng-device,rng=rng0 \ -drive file=riscv64-debianrootfs-qemu.qcow2,format=qcow2,id=hd0 \ -device virtio-net-device,netdev=usernet \ -netdev user,id=usernet,hostfwd=tcp::2-:22" -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1847232 Title: qemu TCG in s390x mode issue with calculating HASH Status in QEMU: Fix Released Bug description: When using go on s390x on Debian x64 (buster) (host) and debian s390x (sid) (guest) I run into the following problem : The following occurs while trying to build a custom project : go: github.com/FactomProject/basen@v0.0.0-20150613233007-fe3947df716e: Get https://proxy.golang.org/github.com/%21factom%21project/basen/@v/v0.0.0-20150613233007-fe3947df716e.mod: local error: tls: bad record MAC Doing a git bisect I find that this problem only occurs on and after commit 08ef92d556c584c7faf594ff3af46df456276e1b Before that commit, all works fine. Past this commit, build always fails. Without any proof, It looks like a hash calculation bug related to using z/Arch vector facilities... To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1847232/+subscriptions
