run-pthread1.sh runs a simple pthread application that creates 3 sub threads each of which sleep until a 'test-done' file is created. On restart the application seems to hang in sys_futex(). pthread1 S f7243be0 0 2847 2845 0x00000000 f6657780 00000082 00000001 f7243be0 f7243d74 c3192180 d3d0be1c b80a2000 c104196a c2f7b560 ffffffea b80a2bd8 d3d0be1c 00000000 c15ffbac c1041a4b c15ffbac d3d0be00 d3d0be00 00000000 c1041b4d 00000000 d3d0be00 00000000 Call Trace: [<c104196a>] ? get_futex_key+0xfe/0x108 [<c1041a4b>] ? futex_wait_setup+0x63/0xd1 [<c1041b4d>] ? futex_wait_queue_me+0x94/0xa5 [<c1041c54>] ? futex_wait+0xf6/0x1e9 [<c1154043>] ? number+0x15b/0x232 [<c1042e2e>] ? do_futex+0x93/0xa01 [<c115551c>] ? vsnprintf+0x279/0x2be [<c115532c>] ? vsnprintf+0x89/0x2be [<c10300e2>] ? __dequeue_signal+0xd/0xd0 [<c102fd37>] ? recalc_sigpending+0xb/0x2b [<c1031450>] ? dequeue_signal+0x9d/0x117 [<c1032206>] ? get_signal_to_deliver+0xc8/0x32b [<c100203c>] ? do_notify_resume+0x6f/0x669 [<c134f76d>] ? schedule+0x69c/0x6f8 [<c102808e>] ? printk+0x14/0x18 [<c1037d43>] ? finish_wait+0x27/0x48 [<c114bfde>] ? do_restart+0xce9/0xdca [<c104389d>] ? sys_futex+0x101/0x116 The other three threads are waiting in do_nanosleep(). Attached is the complete log from mktree. I am still debugging the problem.
Created container with pid 2807 root 2805 0.0 0.0 1660 424 ttyp0 S+ 19:53 0:00 ../ns_exec -cpuimP pid.pthread1 -- ./pthread1 -n 4 root 2807 0.0 0.0 34520 520 ttyp0 Sl+ 19:53 0:00 ./pthread1 -n 4 root 2819 0.0 0.0 3904 648 ttyp0 R+ 19:53 0:00 grep ./pthread1 <1>number of tasks: 5 <1>pid 2: thread tgid 1 <1>pid 2: creator set to 1 <1>pid 3: thread tgid 1 <1>pid 3: creator set to 1 <1>pid 4: thread tgid 1 <1>pid 4: creator set to 1 <1>pid 5: thread tgid 1 <1>pid 5: creator set to 1 <1>[0] pid 1 ppid 0 sid 1 creator 0 <1>[1] pid 2 ppid 0 sid 1 creator 1 prev 3 T <1>[2] pid 3 ppid 0 sid 1 creator 1 next 2 prev 4 T <1>[3] pid 4 ppid 0 sid 1 creator 1 next 3 prev 5 T <1>[4] pid 5 ppid 0 sid 1 creator 1 next 4 T <1>subtree (existing pidns) <1>forking child vpid 1 flags 0x1 <1>forked child vpid 3 (asked 1) <3>root task pid 3 <3>pid 1: pid 3 sid 0 parent 1 <3>pid 1: fork child 5 without session <3>forking child vpid 5 flags 0x4 <3>forked child vpid 4 (asked 5) <3>pid 1: fork child 4 without session <4>pid 5: pid 4 sid 3 parent 1 <3>forking child vpid 4 flags 0x4 <2>c/r swap old 5 new 4 <5>pid 4: pid 5 sid 3 parent 1 <5>about to call sys_restart() <2>c/r swap old 4 new 5 <3>forked child vpid 5 (asked 4) <4>about to call sys_restart() <3>pid 1: fork child 3 without session <3>forking child vpid 3 flags 0x4 <3>forked child vpid 6 (asked 3) <3>pid 1: fork child 2 without session <6>pid 3: pid 6 sid 3 parent 1 <3>forking child vpid 2 flags 0x4 <2>c/r swap old 3 new 6 <6>about to call sys_restart() <7>pid 2: pid 7 sid 3 parent 1 <7>about to call sys_restart() <2>c/r swap old 2 new 7 <3>forked child vpid 7 (asked 2) <2>c/r swap old 1 new 3 <2>c/r read input 16384 <2>c/r read input 16384 <2>c/r read input 16384 <2>c/r read input 16384 <2>c/r read input 16384 <3>about to call sys_restart() <2>c/r read input 16384 <2>c/r read input 668 <2>c/r read input 0 <1>restart succeeded root 2847 0.0 0.0 34520 136 ? Ssl 19:53 0:00 ./pthread1 -n 4 root 2857 0.0 0.0 3904 652 ttyp0 R+ 19:53 0:00 grep ./pthread1
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