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Subject: [PATCH 0/3] find_next_iomem_res() fixes
From:   Bjorn Helgaas <helgaas@kernel.org>
To:     linux-kernel@vger.kernel.org
Cc:     Lianbo Jiang <lijiang@redhat.com>, Vivek Goyal <vgoyal@redhat.com>,
        kexec@lists.infradead.org, tglx@linutronix.de, mingo@redhat.com,
        hpa@zytor.com, x86@kernel.org, akpm@linux-foundation.org,
        dan.j.williams@intel.com, thomas.lendacky@amd.com,
        baiyaowei@cmss.chinamobile.com, tiwai@suse.de, bp@suse.de,
        brijesh.singh@amd.com, dyoung@redhat.com, bhe@redhat.com
Date:   Thu, 27 Sep 2018 09:21:49 -0500
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These fix:

  - A kexec off-by-one error that we probably never see in practice (only
    affects a resource starting at exactly 640KB).

  - A corner case in walk_iomem_res_desc(), walk_system_ram_res(), etc that
    we probably also never see in practice (only affects a single byte
    resource at the very end of the region we're searching)

  - An issue in walk_iomem_res_desc() that apparently causes a kdump issue
    (see Lianbo's note at [1]).

I think we need to fix the kdump issue either by these patches
(specifically the last one) or by the patch Lianbo posted [2].

I'm hoping to avoid deciding and merging these myself, but I'm not
sure who really wants to own kernel/resource.c.

[1] https://lore.kernel.org/lkml/01551d06-c421-5df3-b19f-fc66f3639e4f@redhat.com
[2] https://lore.kernel.org/lkml/20180921073211.20097-2-lijiang@redhat.com

---

Bjorn Helgaas (3):
      x86/kexec: Correct KEXEC_BACKUP_SRC_END off-by-one error
      resource: Include resource end in walk_*() interfaces
      resource: Fix find_next_iomem_res() iteration issue


 arch/x86/include/asm/kexec.h |    2 -
 kernel/resource.c            |   96 ++++++++++++++++++------------------------
 2 files changed, 43 insertions(+), 55 deletions(-)