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authorChristian Krinitsin <mail@krinitsin.com>2025-05-30 14:51:13 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-05-30 14:51:13 +0000
commit225caa38269323af1bfc2daadff5ec8bd930747f (patch)
treee0a5fefde9ee100ba6f32fb36de6707490e4164e /mailinglist/output_launchpad/1640525
parent904141bfb8d5385b75eb3b7afec1dcda89af65a7 (diff)
downloademulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.tar.gz
emulator-bug-study-225caa38269323af1bfc2daadff5ec8bd930747f.zip
add mailinglist scraper results
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+-net socket,connect/listen does not work in 2.7.0
+
+Using 2.7.0 release on Debian Sid. What I did: start one VM with:
+----
+/home/pierre/build/qemu/build/x86_64-softmmu/qemu-system-x86_64 \
+-smp 4 \
+-cpu Nehalem \
+-soundhw ac97 \
+-k fr \
+-localtime \
+-enable-kvm \
+-m 4099 \
+-drive file=/mnt/virtualMachines/qemu/lfs-7.10-porg.qcow2,cache=writeback \
+-cdrom /mnt/virtualMachines/qemu/grub-img.iso \
+-boot order=c,once=d,menu=on \
+-vga std \
+-serial mon:stdio \
+-net nic,vlan=0,model=e1000,macaddr=52:54:00:12:34:58 \
+-net user,vlan=0,hostfwd=tcp::2223-10.0.2.9:22 \
+-net nic,vlan=1,model=e1000,macaddr=52:54:00:12:34:56 \
+-net socket,vlan=1,listen=:4321
+----
+Start another one with:
+----
+/home/pierre/build/qemu/build/x86_64-softmmu/qemu-system-x86_64 \
+-smp 4 \
+-cpu Nehalem \
+-soundhw ac97 \
+-k fr \
+-localtime \
+-enable-kvm \
+-m 4099 \
+-drive file=/mnt/virtualMachines/qemu/lfs-7.10-october.qcow2,cache=writeback \
+-cdrom /mnt/virtualMachines/qemu/grub-img.iso \
+-boot order=c \
+-serial mon:stdio \
+-vga std \
+-net nic,vlan=0,model=e1000,macaddr=52:54:00:12:34:57 \
+-net socket,vlan=0,connect=localhost:4321
+----
+The network settings of the first machine are:
+----
+1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
+ link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
+ inet 127.0.0.1/8 scope host lo
+ valid_lft forever preferred_lft forever
+2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
+ link/ether 52:54:00:12:34:58 brd ff:ff:ff:ff:ff:ff
+3: enp0s4: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast master br0 state UP group default qlen 1000
+ link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
+4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
+ link/ether 52:54:00:12:34:56 brd ff:ff:ff:ff:ff:ff
+ inet 10.0.2.9/24 brd 10.0.2.255 scope global br0
+ valid_lft forever preferred_lft forever
+----
+The network settings on the second machine are:
+----
+1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
+ link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
+ inet 127.0.0.1/8 scope host lo
+ valid_lft forever preferred_lft forever
+2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
+ link/ether 52:54:00:12:34:57 brd ff:ff:ff:ff:ff:ff
+ inet 10.0.2.10/24 brd 10.0.2.255 scope global enp0s3
+ valid_lft forever preferred_lft forever
+----
+typing "ping -c 1 10.0.2.10" on the first machine returns:
+----
+PING 10.0.2.10 (10.0.2.10): 56 data bytes
+92 bytes from virtuallfs (10.0.2.9): Destination Host Unreachable
+--- 10.0.2.10 ping statistics ---
+1 packets transmitted, 0 packets received, 100% packet loss
+----
+and something similar when typing "ping -c 1 10.0.2.9" on the second machine.
+
+This very same setting works as expected in version 2.6.0. I could bisect, and the offending commit is 16a3df403b1:
+----
+commit 16a3df403b10c4ac347159e39005fd520b2648bb
+Author: Zhang Chen <email address hidden>
+Date: Fri May 13 15:35:19 2016 +0800
+
+ net/net: Add SocketReadState for reuse codes
+
+ This function is from net/socket.c, move it to net.c and net.h.
+ Add SocketReadState to make others reuse net_fill_rstate().
+ suggestion from jason.
+
+ v4:
+ - move 'rs->finalize = finalize' to rs_init()
+
+ v3:
+ - remove SocketReadState init callback
+ - put finalize callback to net_fill_rstate()
+
+ v2:
+ - rename ReadState to SocketReadState
+ - add SocketReadState init and finalize callback
+
+ v1:
+ - init patch
+
+ Signed-off-by: Zhang Chen <email address hidden>
+ Signed-off-by: Li Zhijian <email address hidden>
+ Signed-off-by: Wen Congyang <email address hidden>
+ Signed-off-by: Jason Wang <email address hidden>
+----
+
+BTW, the systems on both VM are built from http://www.linuxfromscratch.org. But I do not think this is important, since I could do the bisect. Of course, I'll be happy to try other VMs, if you point me to some.
+
+The patch for this issue is here:
+
+https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg00811.html
+
+Fix has been committed: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=e79cd4068063ea285919
+
+Great. Thanks to you both.
+
+Fix has been released with QEMU v2.8
+