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b=aBEk0qOUrYIHyyQ7WnA9ixpbUNxja1hUtWp0/OwMhuR25aZbJbVQtLto1DwKSbFZN ABRbuAG809O600Mom8UZ/FdHxBg8pIH6fe0826r2Rhsl+KQRrXGNJo2aR1Mf33c8ic XhLNVmP5GEiJ0nV/w++qVcYYQkpLxXTAO8fDVJZ8= Date: Sat, 28 Mar 2026 10:39:59 -0700 From: Andrew Morton To: syzbot ci Cc: linux-mm@kvack.org, ljykernel@163.com, syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot ci] Re: mm/page_owner: warn when stack trace depth hits PAGE_OWNER_STACK_DEPTH limit Message-Id: <20260328103959.a4739ffff3c8d7a6f4d60732@linux-foundation.org> In-Reply-To: <69c80fa8.a70a0220.97f31.0002.GAE@google.com> References: <20260328214408.2990597-1-ljykernel@163.com> <69c80fa8.a70a0220.97f31.0002.GAE@google.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: D8648140009 X-Stat-Signature: pkz76khcwygfz1oawkzoz45cs1pttuhy X-Rspam-User: X-Rspamd-Server: rspam07 X-HE-Tag: 1774719600-65495 X-HE-Meta: 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 QH+pep9S 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Sat, 28 Mar 2026 10:28:08 -0700 syzbot ci wrote: > syzbot ci has tested the following series > > [v2] mm/page_owner: warn when stack trace depth hits PAGE_OWNER_STACK_DEPTH limit > https://lore.kernel.org/all/20260328214408.2990597-1-ljykernel@163.com > * [PATCH v2] mm/page_owner: warn when stack trace depth hits PAGE_OWNER_STACK_DEPTH limit > > and found the following issue: > possible deadlock in hrtimer_start_range_ns > > Full report is available here: > https://ci.syzbot.org/series/aa38ba8f-44db-4d01-8965-ed5a27174f71 > > *** > > possible deadlock in hrtimer_start_range_ns Thanks. Sashiko reported a couple of things, one of which is a deadlock, probably the same one: https://sashiko.dev/#/patchset/20260328214408.2990597-1-ljykernel@163.com