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Mon, 24 Nov 2025 10:05:25 -0800 (PST) Received: from biancapradeep.lan ([2605:a601:a619:8500::8]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8b3295c13ccsm990309685a.26.2025.11.24.10.05.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Nov 2025 10:05:25 -0800 (PST) From: Hithashree Bojanala To: Cc: linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Hithashri Bojanala Subject: [PATCH] fix kmalloc bug in bpf_prog_alloc_no_stats Date: Mon, 24 Nov 2025 13:05:20 -0500 Message-ID: <20251124180522.5350-1-bojanalahithashri@gmail.com> X-Mailer: git-send-email 2.47.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Hithashri Bojanala fix https://syzkaller.appspot.com/bug?extid=3Dd4264133b3e51212ea30 vmalloc doesnt support __GFP_ACCOUNT --- kernel/bpf/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index d595fe512498..ffe2658ce165 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -263,7 +263,8 @@ struct bpf_prog *bpf_prog_realloc(struct bpf_prog *fp_o= ld, unsigned int size, if (pages <=3D fp_old->pages) return fp_old; =20 - fp =3D __vmalloc(size, gfp_flags); + /*vmalloc doesn't support __GFP_ACCOUNT, so strip it for the vmalloc call= */ + fp =3D __vmalloc(size, gfp_flags & ~__GFP_ACCOUNT); if (fp) { memcpy(fp, fp_old, fp_old->pages * PAGE_SIZE); fp->pages =3D pages; --=20 2.47.0