[CRIU] Parasite: can't allocate memory for parasite blob

[Kuprieiev Ruslan]

Hi!

I'm trying to dump litespeed php process(when it is being spawned by 
apache) and getting an error:

(00.013942) Collecting fds (pid: 5622)
(00.013949) ----------------------------------------
(00.013977) Found 5 file descriptors
(00.013986) ----------------------------------------
(00.014009) Dump private signals of 5622
(00.014023) Dump shared signals of 5622
(00.014040) Parasite syscall_ip at 0x400000
(00.014130) Error (parasite-syscall.c:1128): Can't allocate memory for 
parasite blob (pid: 5622)
(00.014150) Error (cr-dump.c:1553): Can't infect (pid: 5622) with parasite
(00.014851) Unlock network
(00.014865) Unfreezing tasks into 1
(00.014873)     Unseizing 5622 into 1
(00.014922) Error (cr-dump.c:1979): Dumping FAILED.

Could you give me a hint on what could cause this error?
It is worth noting, that I'm able to successfully dump/restore litespeed 
php when starting it
by hand from the cmdline.

Btw, I also discovered that httpd.service has a PrivateTmp option 
enabled which causes apache children
to inherit /tmp/sytemd-private-* shared mount, which results in criu 
failing to dump apache children as it
doesn't support shared mounts. Though, this issue is easy to solve by 
just disabling PrivateTmp.


Thanks,
Ruslan