Error (criu/arch/x86/kerndat.c:186): Continue after SIGSTOP.. Urr what?

[wulinze]

When I run command /data/crac/jdk/bin/java -XX:CRaCCheckpointTo=/data/checkpoint -jar target/example-jetty-1.0-SNAPSHOT.jar in my centos7 it work and get dump4.log

and java process looks like hanged

and when I run /data/crac/jdk/bin/java -XX:CRaCRestoreFrom=/data/checkpoint

what's the error mean

[AntonKozlov]

Do you mean it hangs and but does generate dump4.log?

Could you post the dump4.log file?

[wulinze]

dump4.log comments

(00.000108) Version: 3.17.1-crac (gitid d62b80e+1)
(00.000150) Running on syslab-wulinze-02.dev.kwaidc.com Linux 3.10.0-1160.11.1.el7.x86_64 #1 SMP Fri Dec 18 16:34:56 UTC 2020 x86_64
(00.000183) File /run/criu.kdat does not exist
(00.001150) sockets: Probing sock diag modules
(00.001245) sockets: Done probing
(00.001297) Pagemap is fully functional
(00.001400) Found anon-shmem device at 4
(00.001723) Hugetlb size 2 Mb is supported but cannot get dev's number
(00.001760) Hugetlb size 1024 Mb is supported but cannot get dev's number
(00.001773) Reset 20124's dirty tracking
(00.001827)  ... done
(00.001881) Dirty track supported on kernel
(00.001999) Found task size of 7ffffffff000
(00.010961) Warn  (criu/net.c:3430): Unable to get tun network namespace
(00.011673) Warn  (criu/sk-unix.c:224): unix: Unable to open a socket file: Bad address
(00.015687) Restoring netdev veth idx 10
(00.016122) Dumping netns links
(00.016188) 	LD: Got link 1, type 772
(00.016197) 	LD: Got link 10, type 1
(00.016913) vdso: Parsing at 7ffcd6f29000 7ffcd6f2b000
(00.016930) vdso: PT_LOAD p_vaddr: ffffffffff700000
(00.016934) vdso: DT_HASH: ffffffffff700120
(00.016936) vdso: DT_STRTAB: ffffffffff700250
(00.016938) vdso: DT_SYMTAB: ffffffffff700160
(00.016940) vdso: DT_STRSZ: 5e
(00.016942) vdso: DT_SYMENT: 18
(00.016944) vdso: nbucket 3 nchain a bucket 7ffcd6f29128 chain 7ffcd6f29134
(00.016955) vdso: rt [vdso] 7ffcd6f29000-7ffcd6f2b000 [vvar] ffffffffffffffff-fffffffffffffffe
(00.017550) Warn  (criu/net.c:3430): Unable to get socket network namespace
(00.017610) cpu: x86_family 6 x86_vendor_id GenuineIntel x86_model_id Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GHz
(00.017620) cpu: fpu: xfeatures_mask 0x5 xsave_size 832 xsave_size_max 832 xsaves_size 0
(00.017624) cpu: fpu: x87 floating point registers     xstate_offsets      0 / 0      xstate_sizes    160 / 160
(00.017630) cpu: fpu: AVX registers                    xstate_offsets    576 / 576    xstate_sizes    256 / 256
(00.017724) Error (criu/arch/x86/kerndat.c:186): Continue after SIGSTOP.. Urr what?