Re: [Qemu-devel] [PATCH v2 0/2] avoid a hotplug operation leading migration's source side abort
Li Zhijian wrote: > qemu migration's source side will exit unexpectedly when we hotplug a deivce > during a migration is processing. > we can reproduced it easily by following step > 1. do something with dirty memory requently(like memtester) in guest > 2. startup a background migration with '-d' option > 3. hotplug a device(device_add e1000,id=mye1000) > 4. stop step.1, let guest idle so that migration can complete fastly Applied, thanks. > > something unexpectedly occurs like below: > *** Error in `/home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64': > free(): invalid pointer: 0x7fff5c010b20 *** > === Backtrace: = > /lib64/libc.so.6(+0x7d1fd)[0x75ad41fd] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x1e29c2)[0x557369c2] > /lib64/libglib-2.0.so.0(g_free+0xf)[0x76aaa5af] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x139454)[0x5568d454] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x13a232)[0x5568e232] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x13a2f1)[0x5568e2f1] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xec914)[0x55640914] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xc7e7e)[0x5561be7e] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xc7f0f)[0x5561bf0f] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xf01c9)[0x556441c9] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3541d4)[0x558a81d4] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3a5cf6)[0x558f9cf6] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b5809)[0x55909809] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3a6067)[0x558fa067] > /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x15a)[0x76aa49ba] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b3c6f)[0x55907c6f] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b3d4c)[0x55907d4c] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b3e0b)[0x55907e0b] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x1df701)[0x55733701] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x1e6fed)[0x5573afed] > /lib64/libc.so.6(__libc_start_main+0xf5)[0x75a78af5] > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x93729)[0x555e7729] > === Memory map: > 4000-55b04000 r-xp 08:04 14111744 > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64 > 55d03000-55dcc000 r--p 005af000 08:04 14111744 > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64 > 55dcc000-55e42000 rw-p 00678000 08:04 14111744 > /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64 > 55e42000-5affc000 rw-p 00:00 0 > [heap] > snip... > > Changes from v1 > do bitmap_set after bitmap_copy > > Li Zhijian (2): > migration: protect migration_bitmap > migration: extend migration_bitmap > > exec.c | 5 + > include/exec/exec-all.h | 1 + > migration/ram.c | 40 ++-- > 3 files changed, 40 insertions(+), 6 deletions(-)
[Qemu-devel] [PATCH v2 0/2] avoid a hotplug operation leading migration's source side abort
qemu migration's source side will exit unexpectedly when we hotplug a deivce during a migration is processing. we can reproduced it easily by following step 1. do something with dirty memory requently(like memtester) in guest 2. startup a background migration with '-d' option 3. hotplug a device(device_add e1000,id=mye1000) 4. stop step.1, let guest idle so that migration can complete fastly something unexpectedly occurs like below: *** Error in `/home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64': free(): invalid pointer: 0x7fff5c010b20 *** === Backtrace: = /lib64/libc.so.6(+0x7d1fd)[0x75ad41fd] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x1e29c2)[0x557369c2] /lib64/libglib-2.0.so.0(g_free+0xf)[0x76aaa5af] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x139454)[0x5568d454] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x13a232)[0x5568e232] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x13a2f1)[0x5568e2f1] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xec914)[0x55640914] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xc7e7e)[0x5561be7e] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xc7f0f)[0x5561bf0f] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0xf01c9)[0x556441c9] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3541d4)[0x558a81d4] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3a5cf6)[0x558f9cf6] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b5809)[0x55909809] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3a6067)[0x558fa067] /lib64/libglib-2.0.so.0(g_main_context_dispatch+0x15a)[0x76aa49ba] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b3c6f)[0x55907c6f] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b3d4c)[0x55907d4c] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x3b3e0b)[0x55907e0b] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x1df701)[0x55733701] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x1e6fed)[0x5573afed] /lib64/libc.so.6(__libc_start_main+0xf5)[0x75a78af5] /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64(+0x93729)[0x555e7729] === Memory map: 4000-55b04000 r-xp 08:04 14111744 /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64 55d03000-55dcc000 r--p 005af000 08:04 14111744 /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64 55dcc000-55e42000 rw-p 00678000 08:04 14111744 /home/lizj/workspace/qemu/x86_64-softmmu/qemu-system-x86_64 55e42000-5affc000 rw-p 00:00 0 [heap] snip... Changes from v1 do bitmap_set after bitmap_copy Li Zhijian (2): migration: protect migration_bitmap migration: extend migration_bitmap exec.c | 5 + include/exec/exec-all.h | 1 + migration/ram.c | 40 ++-- 3 files changed, 40 insertions(+), 6 deletions(-) -- 2.1.4
