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zipl: check add_envblk predicate when setting stage3_parms

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Set stage3_parms.envblk_len to 0, if add_envblk is false.
This fixes segmentation fault when performing job with
not defined zIPL environment (e.g. installing SCSI dump)

Signed-off-by: Eduard Shishkin <edward6@linux.ibm.com>
Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Eduard Shishkin
2021-10-04 18:07:07 +02:00
committed by Jan Höppner
parent f8331a4b8e
commit 969a439aaa
1 changed files with 2 additions and 1 deletions
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3
zipl/src/bootmap.c
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@@ -675,7 +675,8 @@ static int add_ipl_program(int fd, char *filename,
IMAGE_ENTRY,
(info->type == disk_type_scsi) ? 0 : 1,
flags, ipl->image_addr, image_size,
ipl->envblk_addr, envblk->size);
ipl->envblk_addr,
add_envblk ? envblk->size : 0);
if (rc) {
free(table);
return rc;