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([2620:10d:c090:500::7:d234]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2364e719620sm370675ad.217.2025.06.11.14.43.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Jun 2025 14:43:02 -0700 (PDT) Message-ID: <70fa837f583c0d9c0b7685dfe128ec3dea46d43a.camel@gmail.com> Subject: Re: [syzbot] [bpf?] KASAN: slab-use-after-free Read in do_check From: Eduard Zingerman To: Luis Gerhorst Cc: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, haoluo@google.com, john.fastabend@gmail.com, jolsa@kernel.org, kpsingh@kernel.org, linux-kernel@vger.kernel.org, martin.lau@linux.dev, sdf@fomichev.me, song@kernel.org, syzkaller-bugs@googlegroups.com, yonghong.song@linux.dev Date: Wed, 11 Jun 2025 14:43:00 -0700 In-Reply-To: <87plfa3qxi.fsf@fau.de> References: <68497853.050a0220.33aa0e.036a.GAE@google.com> <38862a832b91382cddb083dddd92643bed0723b8.camel@gmail.com> <87frg6gysw.fsf@fau.de> <87plfa3qxi.fsf@fau.de> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 (3.56.2-1.fc42) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Wed, 2025-06-11 at 23:32 +0200, Luis Gerhorst wrote: [...] > I sent the fix [1], let me know if it is as desired. Thank you for the patches, I'll take a look shortly. For now I asked syzbot to test "bpf: Fix state use-after-free on push_stack= () err" (hope I did it correctly). [...]