[Bug 219399] System panics after several hours of 14-threads-compilation orgies using poudriere on AMD Ryzen...

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=219399

--- Comment #238 from Nils Beyer <nbe at renzel.net> ---
(In reply to Don Lewis from comment #237)

okay, just for fun I increased the dead zone of the user page:
--------------------------------------------------------------------------
Index: sys/amd64/amd64/elf_machdep.c                                            
===================================================================             
--- sys/amd64/amd64/elf_machdep.c       (revision 323186)                       
+++ sys/amd64/amd64/elf_machdep.c       (working copy)                          
@@ -88,10 +88,10 @@                                                             
 amd64_lower_shared_page(struct sysentvec *sv)                                  
 {                                                                              
        if (hw_lower_amd64_sharedpage != 0) {                                   
-               sv->sv_maxuser -= PAGE_SIZE;                                    
-               sv->sv_shared_page_base -= PAGE_SIZE;                           
-               sv->sv_usrstack -= PAGE_SIZE;                                   
-               sv->sv_psstrings -= PAGE_SIZE;                                  
+               sv->sv_maxuser -= (128 * PAGE_SIZE);                            
+               sv->sv_shared_page_base -= (128 * PAGE_SIZE);                   
+               sv->sv_usrstack -= (128 * PAGE_SIZE);                           
+               sv->sv_psstrings -= (128 * PAGE_SIZE);                          
        }                                                                       
 }
[...]
root at asbach:/home/nbe/#./sigtramp ^M
8
-1 12 0x7ffffff7f190 8
--------------------------------------------------------------------------

let's see if that changes anything...

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