From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 78A2917332C; Tue, 26 Aug 2025 11:40:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756208425; cv=none; b=cZL14eWDXQ4oLdLex2ObXTalJKcmv4bZt/ddjVEMX/9AmV2hgFAiQbGMHPzu5MiJ97N0wyEHURljV+oLBQOYh1qNH/FbgGxKQDOHBmwzhAjnyPi6p43Dv+Dp7Jf0y2uteY0ugRSZWyfz5161bpr/tJMb0kxlEhPkXxTF0fsM/C4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756208425; c=relaxed/simple; bh=LV3xA1arGqXTtGZ990gfKgzyaDCE3p+501u6E9AofN4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=E/j/FH0U6sm5Y1ZujKdENgbEzXVfC/DI1OtP4sc76PJv6BzK4Yt5qQ9upWQXyJbw1XVZQKwBGZNzde4UuuDzEdUUjtFiwsJb8RFL5wb570lrybM5F6+5jeycBmQzBJkLkt75GPRc357kfmqSmVG7EUftlB9JqziBCwDxL7nKQB8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=alFRmeR8; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="alFRmeR8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 12456C4CEF1; Tue, 26 Aug 2025 11:40:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756208425; bh=LV3xA1arGqXTtGZ990gfKgzyaDCE3p+501u6E9AofN4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=alFRmeR8b+ZlD3y7/AugiFZvLarHnE0nwOoKI29m4kQHDndDQrvJxuXM437PiF4Ui Jt2EQ3T0OaZSrQYFpkI6KNjb36h5cuctWgmkGg2phzqVlVwnAxvpIbT/WuA3Bf13Qs SD76nU4Hm5/USWJHDxDFoc8+Qm58XuE0WRKw2z+Q= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Damien Le Moal , Manivannan Sadhasivam , Niklas Cassel Subject: [PATCH 6.12 075/322] PCI: endpoint: Fix configfs group list head handling Date: Tue, 26 Aug 2025 13:08:10 +0200 Message-ID: <20250826110917.455173096@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110915.169062587@linuxfoundation.org> References: <20250826110915.169062587@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Damien Le Moal commit d79123d79a8154b4318529b7b2ff7e15806f480b upstream. Doing a list_del() on the epf_group field of struct pci_epf_driver in pci_epf_remove_cfs() is not correct as this field is a list head, not a list entry. This list_del() call triggers a KASAN warning when an endpoint function driver which has a configfs attribute group is torn down: ================================================================== BUG: KASAN: slab-use-after-free in pci_epf_remove_cfs+0x17c/0x198 Write of size 8 at addr ffff00010f4a0d80 by task rmmod/319 CPU: 3 UID: 0 PID: 319 Comm: rmmod Not tainted 6.16.0-rc2 #1 NONE Hardware name: Radxa ROCK 5B (DT) Call trace: show_stack+0x2c/0x84 (C) dump_stack_lvl+0x70/0x98 print_report+0x17c/0x538 kasan_report+0xb8/0x190 __asan_report_store8_noabort+0x20/0x2c pci_epf_remove_cfs+0x17c/0x198 pci_epf_unregister_driver+0x18/0x30 nvmet_pci_epf_cleanup_module+0x24/0x30 [nvmet_pci_epf] __arm64_sys_delete_module+0x264/0x424 invoke_syscall+0x70/0x260 el0_svc_common.constprop.0+0xac/0x230 do_el0_svc+0x40/0x58 el0_svc+0x48/0xdc el0t_64_sync_handler+0x10c/0x138 el0t_64_sync+0x198/0x19c ... Remove this incorrect list_del() call from pci_epf_remove_cfs(). Fixes: ef1433f717a2 ("PCI: endpoint: Create configfs entry for each pci_epf_device_id table entry") Signed-off-by: Damien Le Moal Signed-off-by: Manivannan Sadhasivam Reviewed-by: Niklas Cassel Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20250624114544.342159-2-dlemoal@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/pci/endpoint/pci-epf-core.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/pci/endpoint/pci-epf-core.c +++ b/drivers/pci/endpoint/pci-epf-core.c @@ -334,7 +334,6 @@ static void pci_epf_remove_cfs(struct pc mutex_lock(&pci_epf_mutex); list_for_each_entry_safe(group, tmp, &driver->epf_group, group_entry) pci_ep_cfs_remove_epf_group(group); - list_del(&driver->epf_group); mutex_unlock(&pci_epf_mutex); }