I have a very simple multi-threaded application that I'm testing with, but I'm unable to get a restart to complete. I've tried both versions 21 and version 22-dev. I'm using a debian 32 bit install inside of a VMWare fusion virtual machine. The problem seems to be limited to threads as I'm able to checkpoint and restart the multitask test application. The steps that I'm executing are: ./pthread_test & [1] 3982 ps -efL | grep pthread_test jwalters 3982 3357 3982 0 2 19:21 pts/0 00:00:00 ./pthread_test jwalters 3982 3357 3983 0 2 19:21 pts/0 00:00:00 ./pthread_test for i in 3982 3983; do echo $i > /containers/1/tasks ; done echo FROZEN /containers/1/freezer.state cat /containers/1/freezer.state FROZEN ./checkpoint 3982 > checkpoint_out (there aren't any unusual looking messages in the dmesg output at this point) After thawing and killing off the running instance, I attempt to restart: ./restart -d < checkpoint_out ... <4030>c/r read input 16384 <4030>c/r read input 16384 <4030>c/r read input 12789 <4030>c/r read input 0 <4029>restart succeeded <4029>SIGCHLD: already collected <4029>task terminated with signal 11 <4029>c/r succeeded The tail end of the syslog also contains: [ 3210.327177] [4029:4029:c/r:do_restart:1451] sys_restart returns 0 [ 3210.327190] [4033:4033:c/r:wait_task_sync:919] task sync done (errno 0) [ 3210.327192] [4033:4033:c/r:clear_task_ctx:852] task 4033 clear checkpoint_ctx [ 3210.327194] [4033:4033:c/r:do_restart:1451] sys_restart returns -516 [ 3210.327227] pthread_test[4033]: segfault at b781f424 ip b781f424 sp b75cc1c0 error 4 [ 3210.330254] [4031:4031:c/r:wait_task_sync:919] task sync done (errno 0) [ 3210.330257] [4031:4031:c/r:clear_task_ctx:852] task 4031 clear checkpoint_ctx [ 3210.330259] [4031:4031:c/r:restore_debug_free:144] 4 tasks registered, nr_tasks was 0 nr_total 0 [ 3210.330261] [4031:4031:c/r:restore_debug_free:147] active pid was 2, ctx->errno 0 [ 3210.330263] [4031:4031:c/r:restore_debug_free:149] kflags 22 uflags 0 oflags 1 [ 3210.330265] [4031:4031:c/r:restore_debug_free:151] task[0] to run 4031 [ 3210.330267] [4031:4031:c/r:restore_debug_free:151] task[1] to run 4033 [ 3210.330269] [4031:4031:c/r:restore_debug_free:176] pid 4029 type Coord state Success [ 3210.330272] [4031:4031:c/r:restore_debug_free:176] pid 4031 type Root state Success [ 3210.330274] [4031:4031:c/r:restore_debug_free:176] pid 4033 type Task state Success [ 3210.330276] [4031:4031:c/r:restore_debug_free:176] pid 4032 type Ghost state Success [ 3210.330285] [4031:4031:c/r:pgarr_release_pages:102] total pages 0 [ 3210.330288] [4031:4031:c/r:do_restart:1451] sys_restart returns -512 Any thoughts? best regards, JP _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
