When name is null, it will coredump

[yinshuisiquan]

criu/criu/sk-unix.c

Line 1277 in c8beca6

if (prev_mntns_fd && ui->name[0] && ui->ue->mnt_id >= 0) {

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Reading symbols from /usr/sboin/criu..Reading sywbols fron /usr/lib/debug/.build-id/b4/8507ab6614613facdcc8b7edeb1a948a54e550.debug...done.
done.
[New LWP 132]
[New LwP 215]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by 'criu restore --images-dir /host/nsr/checkpoints/pt-26210316_154236 -v4 -j --tcp'.
Program terminated with signal SIGSEGV，Segmentation fault.
#0 0x00005646bbc96a3a in prep_unix_sk_cwd(ui=ui@entry=0x7f76e85bda50, prev_cwd_fd=prev_cwd_fd@entry=0x7fff390bfedc, prev_root_fd=prev_root_fd@entry=0x7fff390bfee0, prev_mntns_fd=prev_mntns_fd@entry=0x7fff390bfee4) at criu/sk-unix.c:1197
1197 criu/sk-unix.c: No such file or directory.
[Current thread is 1 (LWP 132)]
(gdb) bt
#0 0x00005646bbc96a3a in prep_unix_sk_cwd(ui=ui@entry=0x7f76e85bda50, prev_cwd_fd=prev_cwd_fd@entry=0x7fff390bfedc, prev_root_fd=prev_root_fd@entry=0x7fff390bfee0, prev_mntns_fd=prev_mntns_fd@entry=0x7fff390bfee4) at criu/sk-unix.c:1197
#1 0x00005646bbc99d77 in post_open_standalone (fd=18，d=0x7f76e85bdb88) at criu/sk-unix.c:1308
#2 open_unixsk standalone (new_fd=coptimized out>,ui=x7f76e85bdb40) at criu/sk-unix.c:1800
#3 open_unix_sk(d=0x7f76e85bdb88，new_fd=) at criu/sk-unix.c:1960
#4 0x00005646bbc51469 in open_fd (fle=0x7f76e85b7800) at criu/files.c:1157
#5 open_fdinfos (me=0x7f76e85e62b8)at criu/files.c:1213
#6 prepare_fds (me=0x7f76e85e62b8) at criu/files.c:1321
#7 Gx0085646bbc433e in restore_one_ alive task(pid=132，core=core@entry=0x5646bd392e18) at criu/cr-restore.c:904
#8 0x60005646bbc428ed in restore_one_task (core=0x5646bd392e10，pid=) at criu/cr-restore.c:1274
#9 restore_task with children (_arg=0x7fff390c0610) at criu/cr-restore.c:1948
#10 0x00007f76e7316d0f in clone () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) frame 0
#0 0x00005646bbc96a3a in prep_unix_sk_cwd(ui=ui@entry=0x7f76e85bda50, prev_cwd_fd=prev_cwd_fd@entry=0x7fff390bfedc, prev_root_fd=prev_root_fd@entry=0x7fff390bfee0, prev_mntns_fd=prev_mntns_fd@entry=0x7fff390bfee4) at criu/sk-unix.c:1197
1197 criu/sk-unix.c
(gdb) p ui
$1 = (struct unix_sk_info *) 0x7f76e85bda50
(gdb) p ui->name
$2 = 0x0
(gdb)