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From: Frank Mehnert <frank.mehnert-2ptZNfhJYoRaodhZ+FW2PA@public.gmane.org>
To: devicetree-compiler-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
Subject: [PATCH] libfdt: fix fdt_check_node_offset_ w/ VALID_INPUT
Date: Thu, 13 Aug 2020 09:55:09 +0200	[thread overview]
Message-ID: <76064614.bJBAheWMra@noys4> (raw)

fdt_check_node_offset_() checks for a valid offset but also changes the
offset by calling fdt_next_tag(). Hence, do not skip this function if
ASSUME_VALID_INPUT is set.

Actually this works similar to fdt_check_prop_offset_().
---
 libfdt/fdt.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/libfdt/fdt.c b/libfdt/fdt.c
index c28fcc1..39ed8ed 100644
--- a/libfdt/fdt.c
+++ b/libfdt/fdt.c
@@ -206,8 +206,6 @@ uint32_t fdt_next_tag(const void *fdt, int startoffset, int *nextoffset)

 int fdt_check_node_offset_(const void *fdt, int offset)
 {
-       if (can_assume(VALID_INPUT))
-               return offset;
        if ((offset < 0) || (offset % FDT_TAGSIZE)
            || (fdt_next_tag(fdt, offset, &offset) != FDT_BEGIN_NODE))
                return -FDT_ERR_BADOFFSET;

             reply	other threads:[~2020-08-13  7:55 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-13  7:55 Frank Mehnert [this message]
2020-08-13  9:51 ` [PATCH] libfdt: fix fdt_check_node_offset_ w/ VALID_INPUT David Gibson
     [not found]   ` <20200813095108.GA181791-l+x2Y8Cxqc4e6aEkudXLsA@public.gmane.org>
2020-08-13 15:26     ` Frank Mehnert
2020-08-14  3:17       ` David Gibson
     [not found]         ` <20200814031748.GA12805-l+x2Y8Cxqc4e6aEkudXLsA@public.gmane.org>
2020-08-14  6:47           ` Frank Mehnert

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