From: Vasily Gorbik <gor@linux.ibm.com>
To: Mikhail Zaslonko <zaslonko@linux.ibm.com>,
Alexander Egorenkov <egorenar@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Subject: [PATCH 0/2] s390/ipl: Fix missing re-IPL parm blocks handling in dump paths
Date: Thu, 13 Aug 2026 13:06:52 +0200 [thread overview]
Message-ID: <c00-02.ttjpfvt@ub.hpns> (raw)
HMC FTP boot and QEMU direct kernel boot do not provide an IPL parameter
block. This can lead to NULL pointer dereferences during kdump and
stand-alone dump processing.
Fix the kdump and stand-alone dump paths separately. kdump continues
without a re-IPL parameter block, while the stand-alone dumper completes
the dump and halts.
Vasily Gorbik (2):
s390/ipl: Fix NULL deref in kdump without re-IPL parm block
s390/ipl: Fix NULL deref in dump_reipl without re-IPL parm block
arch/s390/kernel/ipl.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
--
2.53.0
next reply other threads:[~2026-08-13 11:07 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-13 11:06 Vasily Gorbik [this message]
2026-08-13 11:06 ` [PATCH 1/2] s390/ipl: Fix NULL deref in kdump without re-IPL parm block Vasily Gorbik
2026-08-13 11:19 ` sashiko-bot
2026-08-13 11:48 ` Vasily Gorbik
2026-08-13 11:06 ` [PATCH 2/2] s390/ipl: Fix NULL deref in dump_reipl " Vasily Gorbik
2026-08-13 11:25 ` sashiko-bot
2026-08-13 13:57 ` Mikhail Zaslonko
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