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| /openbmc/u-boot/test/env/ |
| H A D | hashtable.c | 9dfdbd9f0c69c6c8005bc41ac602c27023492ee8 Wed Jan 30 04:39:54 CST 2019 Roman Kapl <rka@sysgo.com> hashtable: fix environment variable corruption
Only first previously deleted entry was recognized, leading hsearch_r
to think that there was no previously deleted entry. It then conluded
that a free entry was found, even if there were no free entries and it
overwrote a random entry.
This patch makes sure all deleted or free entries are always found and
also introduces constants for the 0 and -1 numbers. Unit tests to excersise a
simple hash table usage and catch the corruption were added.
To trash your environment, simply run this loop:
setenv i 0
while true; do
setenv v_$i $i
setenv v_$i
setexpr i $i + 1
done
Signed-off-by: Roman Kapl <rka@sysgo.com>
|
| H A D | Makefile | diff 9dfdbd9f0c69c6c8005bc41ac602c27023492ee8 Wed Jan 30 04:39:54 CST 2019 Roman Kapl <rka@sysgo.com> hashtable: fix environment variable corruption
Only first previously deleted entry was recognized, leading hsearch_r
to think that there was no previously deleted entry. It then conluded
that a free entry was found, even if there were no free entries and it
overwrote a random entry.
This patch makes sure all deleted or free entries are always found and
also introduces constants for the 0 and -1 numbers. Unit tests to excersise a
simple hash table usage and catch the corruption were added.
To trash your environment, simply run this loop:
setenv i 0
while true; do
setenv v_$i $i
setenv v_$i
setexpr i $i + 1
done
Signed-off-by: Roman Kapl <rka@sysgo.com>
|
| /openbmc/u-boot/lib/ |
| H A D | hashtable.c | diff 9dfdbd9f0c69c6c8005bc41ac602c27023492ee8 Wed Jan 30 04:39:54 CST 2019 Roman Kapl <rka@sysgo.com> hashtable: fix environment variable corruption
Only first previously deleted entry was recognized, leading hsearch_r
to think that there was no previously deleted entry. It then conluded
that a free entry was found, even if there were no free entries and it
overwrote a random entry.
This patch makes sure all deleted or free entries are always found and
also introduces constants for the 0 and -1 numbers. Unit tests to excersise a
simple hash table usage and catch the corruption were added.
To trash your environment, simply run this loop:
setenv i 0
while true; do
setenv v_$i $i
setenv v_$i
setexpr i $i + 1
done
Signed-off-by: Roman Kapl <rka@sysgo.com>
|