Serge E. Hallyn [serue@xxxxxxxxxx] wrote: | Quoting Matt Helsley (matthltc@xxxxxxxxxx): | > The robust futex test can hang if the kernel fails to properly set the robust | > list pointer. This currently happens during restart. The test should not | > hang and instead should report failure. | > | > Use a timeout to ensure that hangs are caught and reported as failure. | | Doesn't seem to work though :) The test still hangs on restart. I got a hang on restart, with following backtrace (ckpt-v17-rc1 plus couple of bug fixes) mktree S f6a4bbe0 0 25126 25124 0x00000000 f6589b00 00000086 00000001 f6a4bbe0 f6a4bd74 c3190160 f5e17e1c 011a6d85 00000000 c302f680 ffffffea 007ee140 f5e17e1c 00000000 00000001 00000000 c15fdbfc f5e17e00 f5e17e00 00000000 c1041af6 00000000 f5e17e00 00000000 Call Trace: [<c1041af6>] ? futex_wait_queue_me+0x94/0xa5 [<c1041bfd>] ? futex_wait+0xf6/0x1e9 [<c106300b>] ? generic_file_buffered_write+0x169/0x257 [<c1042dd7>] ? do_futex+0x93/0xa01 [<c101d867>] ? enqueue_entity+0xe/0x7e [<c1081787>] ? cache_alloc_refill+0x54/0x43e [<c106274a>] ? find_get_page+0x1d/0x7a [<c1064407>] ? filemap_fault+0xbb/0x320 [<c107296c>] ? __do_fault+0x319/0x352 [<c1037c5c>] ? autoremove_wake_function+0x0/0x2d [<c1073f6e>] ? handle_mm_fault+0x24e/0x508 [<c1043846>] ? sys_futex+0x101/0x116 [<c1351f46>] ? do_page_fault+0x1ff/0x27b [<c10027e8>] ? sysenter_do_call+0x12/0x26 mktree S f642b750 0 25127 25124 0x00000000 f6589b00 00000086 c15fcd3c f642b750 f642b8e4 c3170160 c1041e2f 011a6d7f ffffffff f6589b00 000005da 00000000 00000001 00000000 00000000 00000000 f6500000 00000008 f66d5e7c f66d5f9c c108a797 00000000 f642b750 c1037c5c Call Trace: [<c1041e2f>] ? futex_wake+0xb9/0xc3 [<c108a797>] ? pipe_wait+0x4b/0x62 [<c1037c5c>] ? autoremove_wake_function+0x0/0x2d [<c108afdf>] ? pipe_read+0x2c0/0x32d [<c1066aad>] ? get_page_from_freelist+0x284/0x2de [<c1084d7e>] ? do_sync_read+0xbf/0x100 [<c1037c5c>] ? autoremove_wake_function+0x0/0x2d [<c10798ca>] ? page_add_new_anon_rmap+0x20/0x3b [<c1073ef8>] ? handle_mm_fault+0x1d8/0x508 [<c1139499>] ? security_file_permission+0xc/0xd [<c1084cbf>] ? do_sync_read+0x0/0x100 [<c10853f7>] ? vfs_read+0x81/0x102 [<c1085787>] ? sys_read+0x3c/0x63 [<c10027e8>] ? sysenter_do_call+0x12/0x26 | | Not sure it's worth worrying about this, versus just getting the robust | futex restart fix into the kernel :) | | thanks, | -serge | _______________________________________________ | Containers mailing list | Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx | https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
