Andrei Vagin c7544894fe dump/ppc64,arm,mips: sanitize the ERESTART_RESTARTBLOCK -> EINTR transition ... 1. The -ERESTART_RESTARTBLOCK case in get_task_regs() depends on kernel internals too much, and for no reason. We shouldn't rely on fact that a) we are going to do sigreturn() and b) restore_sigcontext() always sets restart_block->fn = do_no_restart_syscall which returns -EINTR. Just change this code to enforce -EINTR after restore, this is what we actually want until we teach criu to handle ERESTART_RESTARTBLOCK. 2. Add pr_warn() to make the potential bug-reports more understandable, a sane application should handle -EINTR correctly but this is not always the case. Fixes: #1325 Report-by: Mr Travis Inspired-by: dd71cca58a ("dump/x86: sanitize the ERESTART_RESTARTBLOCK -> EINTR transition") Signed-off-by: Andrei Vagin <avagin@gmail.com>		2021-09-03 10:31:00 -07:00
..
aarch64	compel: rewrite parasite cmd and args manipulation from assembly to C	2020-10-20 00:18:24 -07:00
arm	dump/ppc64,arm,mips: sanitize the ERESTART_RESTARTBLOCK -> EINTR transition	2021-09-03 10:31:00 -07:00
mips	dump/ppc64,arm,mips: sanitize the ERESTART_RESTARTBLOCK -> EINTR transition	2021-09-03 10:31:00 -07:00
ppc64	dump/ppc64,arm,mips: sanitize the ERESTART_RESTARTBLOCK -> EINTR transition	2021-09-03 10:31:00 -07:00
s390	compel: don't mmap parasite as RWX	2021-09-03 10:31:00 -07:00
x86	compel: don't mmap parasite as RWX	2021-09-03 10:31:00 -07:00