From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f49.google.com (mail-lf1-f49.google.com [209.85.167.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 112AD33D6E0 for ; Tue, 11 Nov 2025 20:21:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.49 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762892474; cv=none; b=JB8PRRdgq4fJ96ZFaBQNtFwrQJm+BWbMHNXFi177UQbcv9WB8RuzyUMjh1/zqit9OYCzeRKIApMhwhSIFTTNEJfn8qFC3WPruc1ocLXSk6zXa28yvO6Prs+W1adjGfKz9055JPsFcZwUxys6XTcPTtkQMtMU+RRDtEXqb6eDQrY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762892474; c=relaxed/simple; bh=d0Uwe/lEuU99IOaaqFoIrf/FmtYFINnvQYwbCLVF+nQ=; h=From:Date:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=S5ZGwBVL8tw5WRiMlu1+sJyiPLX9jdT9mgfc9ANntPOs3IJrFxvzIYleJnJlPoZC6NqUrOY8cwF2rY5twid6xoN7c37IigGiyhp+UE4e0/dWibyj7UH/aNGdVZjdg+L8nNMwYsHlT047v2VDJsn08SF7fBltcfjgAl5vLKRthxU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Mx4jPGLH; arc=none smtp.client-ip=209.85.167.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Mx4jPGLH" Received: by mail-lf1-f49.google.com with SMTP id 2adb3069b0e04-594285c6509so105316e87.0 for ; Tue, 11 Nov 2025 12:21:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1762892470; x=1763497270; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:from:to:cc:subject:date:message-id:reply-to; bh=7bM/Z0egb7ac8A1IhbTkYcl7dpLdkBduvWKO9rOoaso=; b=Mx4jPGLHFH3/3bFs4L1dBmAfddNsVhgO/7+gXP6e3hr+M4XhkoDU+26Heel0SudPAU evHSyQAFoZu7cVltHGy0kuroJL7e1wRYkufYmB+pBpngjNsfoq/sgBT9h0VlhvwEiu2m jOcCRToLe6tRvHXEDiWhRYyo3UD7QP5vmzbbl8Aq4AV3Hep/HpTk2sN/69f8tfry+1st uKc8T+YraYjODo+rZwOvYj6oFv9JIFN7I75woWifJ5xcf3m586+QxWQZorLEThRfkpdq oyJHU/lzotuDjR+gbkyMLNQ1H90t29tE35E8T0/90daDyYSyUjlqa2Hi+qpfDajdz5aL KTkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762892470; x=1763497270; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:date:from:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=7bM/Z0egb7ac8A1IhbTkYcl7dpLdkBduvWKO9rOoaso=; b=ILG3bYfgIcfcaI/6z4gTivAIbw+8wlkaAv9CAdgGlslNq+IWSpFR/2aGjbDCN8Nsx2 pF8I9PBZeCZyYqBmpcy6zIphvpRU9biGCnsxTUhuI+B29zJ/2ZnusJiIQO3xXcZp3jzm CySU4XrO9L9pLGuZ36f2bbBsbfw898AlMz3G3iu8p0h3CVP6kzoVAo7+nsT/44DFjiz3 GxJNg5sAFQ+kIGO6Enq4sIqoLktHP4WOZtLYIDrd+YTrxJ4E7m/g9Hd95JqL7SLV2n+8 RXkmHLl8FAfDx02ZHjqsr6hr3QajweF59HxBJdOSACRGRZl4AnLcTSpSb2YqwIsq4rye PFmg== X-Forwarded-Encrypted: i=1; AJvYcCXQRqclnq8fRhKA7M7HpIMsYRSIxQFaXhkKMj/aK3DTJ1GgMI5rLs8eXEHhrgPJpfFqc8dzmA6duC94l4g=@vger.kernel.org X-Gm-Message-State: AOJu0YynTD0KkMo9pRy6sM819XB+8Bi2DY3IaPG9g9Cf7DaEp6H2N1kn 8tEqRe7ZTRFCOvecoajKfqEJpPT/GA4sGdurh9+GdOpGb+eg+n+p8X6a X-Gm-Gg: ASbGnctS3Y6YpgtdcRavVH+a8TiiwzFH/bwzI/qm0f1EYlw2CB8EqTZUZ+VHTiEbF2c uh2Q7zNZE941b1ObBADGfxeeGElfJrmZFYaOeZKzh3ZFzwYOfJpr/fnrDTCPZ88uDwSnp6hfvER 8WosEdUy2UP14rA0GyceyDBdpwB4nqPg+zp95QuvcQO1oquiS97SzIk8RF0SLgNAb9lOZqxgA/6 UABDwMNn57t64fwbKbP6K80GawxtZDsBTJqR4lJFFA+/8SKZr/2BmGFGmsoDOqErADErJ78Ufxz mcaM7fm58XyqEqX2wJh7FkAXaJvWuXUBvjV/7uMvJmr6SCalG5ljoX+H82Vyz6uYcTuEqrQi6co 6bZLEIr54ueTk8bj5n46C1DtxcXRXFfmqknHm4j/t+Vs= X-Google-Smtp-Source: AGHT+IFOzNyOb24VBUupwqxWTVYpD+MA84ViEpm3t8gfgJpb6EOwHuFRtQ8tg4P+Y1UGmZYJD9xpaw== X-Received: by 2002:a05:6512:3e0a:b0:594:2fe7:11e4 with SMTP id 2adb3069b0e04-59576e1bd76mr156463e87.28.1762892469267; Tue, 11 Nov 2025 12:21:09 -0800 (PST) Received: from milan ([2001:9b1:d5a0:a500::24b]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5944a39eb32sm5298492e87.82.2025.11.11.12.21.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Nov 2025 12:21:08 -0800 (PST) From: Uladzislau Rezki X-Google-Original-From: Uladzislau Rezki Date: Tue, 11 Nov 2025 21:21:06 +0100 To: syzbot ci Cc: akpm@linux-foundation.org, hch@infradead.org, hch@lst.de, linux-kernel@vger.kernel.org, linux-mm@kvack.org, urezki@gmail.com, vishal.moola@gmail.com, syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot ci] Re: make vmalloc gfp flags usage more apparent Message-ID: References: <20251110160457.61791-1-vishal.moola@gmail.com> <69123b72.a70a0220.22f260.0105.GAE@google.com> Precedence: bulk X-Mailing-List: linux-kernel@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: <69123b72.a70a0220.22f260.0105.GAE@google.com> On Mon, Nov 10, 2025 at 11:22:26AM -0800, syzbot ci wrote: > syzbot ci has tested the following series > > [v1] make vmalloc gfp flags usage more apparent > https://lore.kernel.org/all/20251110160457.61791-1-vishal.moola@gmail.com > * [PATCH 1/4] mm/vmalloc: warn on invalid vmalloc gfp flags > * [PATCH 2/4] mm/vmalloc: Add a helper to optimize vmalloc allocation gfps > * [PATCH 3/4] mm/vmalloc: cleanup large_gfp in vm_area_alloc_pages() > * [PATCH 4/4] mm/vmalloc: cleanup gfp flag use in new_vmap_block() > > and found the following issue: > WARNING: kmalloc bug in bpf_prog_alloc_no_stats > > Full report is available here: > https://ci.syzbot.org/series/488ab7c0-de91-4749-bbb2-ca76c3fb798b > > *** > > WARNING: kmalloc bug in bpf_prog_alloc_no_stats > > tree: mm-new > URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/akpm/mm.git > base: 02dafa01ec9a00c3758c1c6478d82fe601f5f1ba > arch: amd64 > compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 > config: https://ci.syzbot.org/builds/2334ae39-552d-4ca2-8562-7adc18ce2cb0/config > > can: broadcast manager protocol > can: netlink gateway - max_hops=1 > can: SAE J1939 > can: isotp protocol (max_pdu_size 8300) > Bluetooth: RFCOMM TTY layer initialized > Bluetooth: RFCOMM socket layer initialized > Bluetooth: RFCOMM ver 1.11 > Bluetooth: BNEP (Ethernet Emulation) ver 1.3 > Bluetooth: BNEP filters: protocol multicast > Bluetooth: BNEP socket layer initialized > Bluetooth: HIDP (Human Interface Emulation) ver 1.2 > Bluetooth: HIDP socket layer initialized > NET: Registered PF_RXRPC protocol family > Key type rxrpc registered > Key type rxrpc_s registered > NET: Registered PF_KCM protocol family > lec:lane_module_init: lec.c: initialized > mpoa:atm_mpoa_init: mpc.c: initialized > l2tp_core: L2TP core driver, V2.0 > l2tp_ppp: PPPoL2TP kernel driver, V2.0 > l2tp_ip: L2TP IP encapsulation support (L2TPv3) > l2tp_netlink: L2TP netlink interface > l2tp_eth: L2TP ethernet pseudowire support (L2TPv3) > l2tp_ip6: L2TP IP encapsulation support for IPv6 (L2TPv3) > NET: Registered PF_PHONET protocol family > 8021q: 802.1Q VLAN Support v1.8 > sctp: Hash tables configured (bind 32/56) > NET: Registered PF_RDS protocol family > Registered RDS/infiniband transport > Registered RDS/tcp transport > tipc: Activated (version 2.0.0) > NET: Registered PF_TIPC protocol family > tipc: Started in single node mode > smc: adding smcd device lo without pnetid > NET: Registered PF_SMC protocol family > 9pnet: Installing 9P2000 support > NET: Registered PF_CAIF protocol family > NET: Registered PF_IEEE802154 protocol family > Key type dns_resolver registered > Key type ceph registered > libceph: loaded (mon/osd proto 15/24) > batman_adv: B.A.T.M.A.N. advanced 2025.4 (compatibility version 15) loaded > openvswitch: Open vSwitch switching datapath > NET: Registered PF_VSOCK protocol family > mpls_gso: MPLS GSO support > IPI shorthand broadcast: enabled > sched_clock: Marking stable (21550045890, 115271513)->(21677757748, -12440345) > registered taskstats version 1 > ------------[ cut here ]------------ > Unexpected gfp: 0x100000 (__GFP_HARDWALL). Fixing up to gfp: 0xdc0 (GFP_KERNEL|__GFP_ZERO). Fix your code! > It looks like we need to add __GFP_HARDWALL to the white-list-mask. -- Uladzislau Rezki