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Wed, 11 Jun 2025 12:57:04 -0700 (PDT) Date: Wed, 11 Jun 2025 12:57:04 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6849df90.a70a0220.cc01e.058d.GAE@google.com> Subject: Re: [syzbot] [bcachefs?] [rcu?] BUG: unable to handle kernel NULL pointer dereference in rcu_core (3) From: syzbot To: 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 Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Queue-Id: 5BB241C0010 X-Stat-Signature: bz95cxjfz67jcpej8e6se1pz33oi9yo3 X-Rspamd-Server: rspam04 X-HE-Tag: 1749671825-154370 X-HE-Meta: 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 ep2SVOFy 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 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.