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[103.168.172.200]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4a7248ed79dsm922611cf.77.2025.06.11.13.58.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Jun 2025 13:58:43 -0700 (PDT) Received: from phl-compute-05.internal (phl-compute-05.phl.internal [10.202.2.45]) by mailfauth.phl.internal (Postfix) with ESMTP id 627411200043; Wed, 11 Jun 2025 16:58:43 -0400 (EDT) Received: from phl-mailfrontend-01 ([10.202.2.162]) by phl-compute-05.internal (MEProxy); Wed, 11 Jun 2025 16:58:43 -0400 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtddugddufedvudcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpggftfghnshhusghstghrihgsvgdp uffrtefokffrpgfnqfghnecuuegrihhlohhuthemuceftddtnecunecujfgurhepfffhvf evuffkfhggtggujgesthdtredttddtvdenucfhrhhomhepuehoqhhunhcuhfgvnhhguceo sghoqhhunhdrfhgvnhhgsehgmhgrihhlrdgtohhmqeenucggtffrrghtthgvrhhnpeevgf dvheehleejieeujeehffdugfefgedvffdvueehgeekkeekiedvkeelvedvhfenucffohhm rghinhepshihiihkrghllhgvrhdrrghpphhsphhothdrtghomhenucevlhhushhtvghruf hiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpegsohhquhhnodhmvghsmhhtphgr uhhthhhpvghrshhonhgrlhhithihqdeiledvgeehtdeigedqudejjeekheehhedvqdgsoh hquhhnrdhfvghngheppehgmhgrihhlrdgtohhmsehfihigmhgvrdhnrghmvgdpnhgspghr tghpthhtohepuddvpdhmohguvgepshhmthhpohhuthdprhgtphhtthhopehshiiisghoth dokedtvgehugeifhegheeffhdugegrheeffeekfegrsehshiiikhgrlhhlvghrrdgrphhp shhpohhtmhgrihhlrdgtohhmpdhrtghpthhtoheprghkphhmsehlihhnuhigqdhfohhunh gurghtihhonhdrohhrghdprhgtphhtthhopehjohhshhesjhhoshhhthhrihhplhgvthht rdhorhhgpdhrtghpthhtohepkhgvnhhtrdhovhgvrhhsthhrvggvtheslhhinhhugidrug gvvhdprhgtphhtthhopehlihhnuhigqdgstggrtghhvghfshesvhhgvghrrdhkvghrnhgv lhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnh gvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhmmheskhhvrggtkhdrohhrghdprhgt phhtthhopehprghulhhmtghksehkvghrnhgvlhdrohhrghdprhgtphhtthhopehrtghuse hvghgvrhdrkhgvrhhnvghlrdhorhhg X-ME-Proxy: Feedback-ID: iad51458e:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 11 Jun 2025 16:58:42 -0400 (EDT) Date: Wed, 11 Jun 2025 13:58:42 -0700 From: Boqun Feng To: syzbot Cc: akpm@linux-foundation.org, josh@joshtriplett.org, kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, paulmck@kernel.org, rcu@vger.kernel.org, syzkaller-bugs@googlegroups.com, urezki@gmail.com Subject: Re: [syzbot] [bcachefs?] [rcu?] BUG: unable to handle kernel NULL pointer dereference in rcu_core (3) Message-ID: References: <6849df90.a70a0220.cc01e.058d.GAE@google.com> Precedence: bulk X-Mailing-List: linux-bcachefs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6849df90.a70a0220.cc01e.058d.GAE@google.com> On Wed, Jun 11, 2025 at 12:57:04PM -0700, syzbot wrote: > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger any issue: > > Reported-by: syzbot+80e5d6f453f14a53383a@syzkaller.appspotmail.com > Tested-by: syzbot+80e5d6f453f14a53383a@syzkaller.appspotmail.com > > Tested on: > > commit: 488ef356 KEYS: Invert FINAL_PUT bit > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=129a660c580000 Is there a way to see the whole console output? If Ulad's patch fixes the exact issue, we should be able to see a WARN_ON_ONCE() triggered. Regards, Boqun > kernel config: https://syzkaller.appspot.com/x/.config?x=713d218acd33d94 > dashboard link: https://syzkaller.appspot.com/bug?extid=80e5d6f453f14a53383a > compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 > patch: https://syzkaller.appspot.com/x/patch.diff?x=170e460c580000 > > Note: testing is done by a robot and is best-effort only. >