From: Matthew Wilcox <willy@infradead.org>
To: Qian Cai <quic_qiancai@quicinc.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>,
David Hildenbrand <david@redhat.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Linux Memory Management List <linux-mm@kvack.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Linux-next: crash in alloc_huge_page()
Date: Wed, 11 Aug 2021 04:06:18 +0100 [thread overview]
Message-ID: <YRM+qm66PfTUQNFL@casper.infradead.org> (raw)
In-Reply-To: <846c4502-3332-0d25-87f5-cb3b71afc38f@quicinc.com>
On Tue, Aug 10, 2021 at 10:22:37PM -0400, Qian Cai wrote:
> and the page->lru has an address fffffffffffffffc for some reasons. Does it sound like some error code
> had not been handled properly and had been propagated here instead? I tried reverting a few recent
> commits for mm/hugetlb.c and mm/memblock.c without luck so far.
Yes, ff..fc is going to be at offset 8 from the actual address, so
that's -12 and -12 is ...
#define ENOMEM 12 /* Out of memory */
so something's returning ERR_PTR(-ENOMEM) instead of NULL.
> [ 8107.262232][T62705] Unable to handle kernel paging request at virtual address fffffffffffffffc
These logs would be a lot easier to read if you snipped the irrelevant
timestamp and whatever this Txxxxx thing is.
next prev parent reply other threads:[~2021-08-11 3:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-11 2:22 Qian Cai
2021-08-11 3:06 ` Matthew Wilcox [this message]
2021-08-11 14:11 ` Mike Rapoport
2021-08-11 14:25 ` Qian Cai
2021-08-11 15:59 ` Mike Kravetz
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