svn commit: r368022 - head/lib/libsysdecode

[Pawel Biernacki]

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);
 }