Author: kaktus
Date: Wed Nov 25 16:30:57 2020
New Revision: 368022
URL: https://svnweb.freebsd.org/changeset/base/368022

Log:
  libsysdecode: correctly decode mmap flags
  
  r352913 added decoding of mmap PROT_MAX()'d flags but didn’t account for the
  case where different values were specified for PROT_MAX and regular flags.
  Fix it.
  
  Submitted by: sigsys_gmail.com
  Reported by:  sigsys_gmail.com
  MFC after:    7 days
  Differential Revision:        https://reviews.freebsd.org/D27312

Modified:
  head/lib/libsysdecode/flags.c

Modified: head/lib/libsysdecode/flags.c
==============================================================================
--- head/lib/libsysdecode/flags.c       Wed Nov 25 15:45:20 2020        
(r368021)
+++ head/lib/libsysdecode/flags.c       Wed Nov 25 16:30:57 2020        
(r368022)
@@ -662,11 +662,11 @@ sysdecode_mmap_prot(FILE *fp, int prot, int *rem)
 
        printed = false;
        protm = PROT_MAX_EXTRACT(prot);
+       prot = PROT_EXTRACT(prot);
        if (protm != 0) {
                fputs("PROT_MAX(", fp);
                printed = print_mask_int(fp, mmapprot, protm, rem);
                fputs(")|", fp);
-               prot = protm;
        }
        return (print_mask_int(fp, mmapprot, prot, rem) || printed);
 }
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