panic: hashed child "stat\t\xe9\xdc\xdf\x02\x02\x98\xcc\xf3<\xdf-\xea\xc8\xc1w\xff\x17\x12H\xe9\x11\x93Q\nI\xf81U\ro}\xe6l\xf67\xbd\xbf\x13\x11\x92\f\x8a&\xed\xa4\xdc\xc4x!\x9d\xb5\x11k4\xd3\x1b\x05\x12\xa5`Pq\x1a\xd9\xe6\xa6\xf5ꭄsf\x92ߏ⦃\xc41p\x06H\xa8T\aڂ\xf0\xca\xc1\x03\x1d\xcdRc\xe7\x1eQ\xf0\xc5S\f\xbd\xdd\xcb\x18\xc5a\x8fZ\x1f\x97\x17\xe5\xa3\xda\x16\x91\x10\xaaJA\xdfB\xe7\xb8\xccI(u.\xa2\xa5^\x9a\xa2gx\xb9\xf6[\xaeq9ŘS\xe0k\xc4p\xe2]\n\x98#h\x03U\xb8\xaa\x1c\x97\xca.x\x93\xbe\x93\xad\xd7]&\x8a\xa1\x9fƟx\xf5)\f~\x819\x01e\x9e#\xc6\x1cQp\x96k\x8dC\x89\x15mK\xb20\x921\x8c\x98\x81\xa99\xe7\xa2*\xb9\x9b\xaa\u0557\xba\xa7M`\x01\xc7\x10\x95\xd8\xdd\xca{\xc5o\x99L\xe0(P\xe5Aw\u007f\xe3\"\xe7\xfd\x94 \x86]\x05\xcf\xf3\x180\x14\xcb\n\xfe\xadgA\xe0\x82\x16\xd0mE\x0e\xbcR\xe5\xef\xd7$c\xff.\x11\x8a[\x88\xcaZ]\x11\x92\xbd\xf3\xb5\xea\xa1\xc8t\x16\x83$X\x02\xf9\xdc\a\xfa\r\x9eQG\x05v\x04f\xed\xa0j0\xb4Q5H\x9bS\x92" over a positive child

goroutine 387 [running]:
DIAGNOSIS:
I0404 17:10:52.387884   25852 x:0] ***************************
I0404 17:10:52.387978   25852 x:0] Args: [/syzkaller/managers/ptrace-proxy-sandbox-race/current/image -root /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root -watchdog-action=panic -network=none -debug -platform=ptrace -file-access=shared -network=sandbox debug -stacks ci-gvisor-ptrace-proxy-sandbox-race-3]
I0404 17:10:52.388025   25852 x:0] Version release-20190304.1-85-gefe4461d74a1
I0404 17:10:52.388048   25852 x:0] PID: 25852
I0404 17:10:52.388072   25852 x:0] UID: 0, GID: 0
I0404 17:10:52.388092   25852 x:0] Configuration:
I0404 17:10:52.388102   25852 x:0] 		RootDir: /syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root
I0404 17:10:52.388129   25852 x:0] 		Platform: ptrace
I0404 17:10:52.388150   25852 x:0] 		FileAccess: shared, overlay: false
I0404 17:10:52.388172   25852 x:0] 		Network: sandbox, logging: false
I0404 17:10:52.388190   25852 x:0] 		Strace: false, max size: 1024, syscalls: []
I0404 17:10:52.388206   25852 x:0] ***************************
D0404 17:10:52.388257   25852 x:0] Load container "/syzkaller/managers/ptrace-proxy-sandbox-race/workdir/gvisor_root" "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0404 17:10:52.393984   25852 x:0] Signal container "ci-gvisor-ptrace-proxy-sandbox-race-3": signal 0
D0404 17:10:52.394062   25852 x:0] Signal sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0404 17:10:52.394093   25852 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0404 17:10:52.394496   25852 x:0] urpc: successfully marshalled 117 bytes.
I0404 17:10:52.499006   25852 x:0] Found sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3", PID: 18454
I0404 17:10:52.499065   25852 x:0] Retrieving sandbox stacks
D0404 17:10:52.499097   25852 x:0] Stacks sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0404 17:10:52.499133   25852 x:0] Connecting to sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3"
D0404 17:10:52.499276   25852 x:0] urpc: successfully marshalled 36 bytes.
W0404 17:10:52.503685   25852 x:0] FATAL ERROR: retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer
retrieving stacks: getting sandbox "ci-gvisor-ptrace-proxy-sandbox-race-3" stacks: urpc method "debug.Stacks" failed: connection reset by peer