Commits on Mar 26, 2023

1. nsexec: retry unshare on EINVAL …

   Older kernels may return EINVAL on unshare when a process is reading
   runc's /proc/$PID/status or /proc/$PID/maps. This was fixed by kernel
   commit 12c641ab8270f ("unshare: Unsharing a thread does not require
   unsharing a vm") in Linux v4.3.
   
   For CentOS 7, the fix was backported to CentOS 7.7 (kernel 3.10.0-1062).
   
   To work around this kernel bug, let's retry on EINVAL a few times.
   
   Reported-by: zzyyzte <zhang.yu58@zte.com.cn>
   Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
   (cherry picked from commit cecb039)
   Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

   

   kolyshkin authored and cyphar committed Mar 26, 2023
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