From nobody Fri Oct 31 21:16:07 2025 X-Original-To: dev-commits-src-all@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4cyv0l60yTz6FFFX; Fri, 31 Oct 2025 21:16:07 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R12" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4cyv0l5Qyvz3P3b; Fri, 31 Oct 2025 21:16:07 +0000 (UTC) (envelope-from git@FreeBSD.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1761945367; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=vFClf4WirwGzqrcVljsE43EiGdrkuHNSwIqBASkBUrw=; b=ijaRu8c0Gk4QwtVfAfThRUsDO3gm4rioygpHQtTxmRnmwnKyleJIZ7uJHwVVsJKP8Z712/ /ee9T754KBh6UVmaj5loaA/cZZRpKDr7kASjYKQtFONUof/7ztLRAxKewoamlmqlyEOAe4 PL9J4ZaeI2SUlFBj13LdFBrD+uSTFXn5dD1J+eTZHGq/uEyTFuQ/x0IiEYjnmZgUdL0XQm EoKdGdcpj+9hklXhh/lJksL1uRq9F+uNCP3+ecbCRuRlnYb9l1Eb5ip6zx4U/3qtS4Z1z4 DWGyHDOvvdR4TtnkvkNb9SXzu2lOQ4I6yTB4ZmnjP8kU4JgigrvhtgGPt515ig== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1761945367; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=vFClf4WirwGzqrcVljsE43EiGdrkuHNSwIqBASkBUrw=; b=bDYON/ZrZjvqTdgcs4Agq3LZ4Fwqah5ewYXuWaZ2PrRWPqfzYoBhdWy6b9GLBrF+QysXDk eerkmLUR65NVAtuqGozE1SqZCS133MIT8usztzdmh97zZ46QxfmsGfFJJxbCR5e+E/OwfD eDsFOnHA+eRiRpqy2yeoL7pjPWVS2Qalaw/TZcCpQqAs6V++dXv/d/rlM7muGtuFpjZZAL 3Z4UzbkNhKuRZDp2S7aO6b4VaCGvquoloVxNjGZIH9HKQJ2QXKM38LZxusZZ0gRYy7COLn WAQuUmK+6iU3yL7/M5vEXOMPr7znpg2OMVeIEAEuDbrpCjboH4KVNLHS/vmaWg== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1761945367; a=rsa-sha256; cv=none; b=cZW/qnqqv1sBvytplp87C5WpkGkHUeidhfOzb6SBup2tIcW7WNC0MRfatiEDAFW/b0RGC+ JpMClSxwdlYGuG6klX2PommzrhYYrKsuHAKqVaDMExxrMOYikNeEPvJNGyCLG48oq8DADN d3IJD/8qO63mNac/UpbTZ3R529AEEBjXZgDEH+0SaSlnpgphJH1pXSROhs1CmZh1cZYMQP rhd+psA2uDugLVUnMrlqktcj0W/nFfqnGhB5uy9ZyZ9WuZqjpPj0kR4PZ3TMP2v8kipNtr EWuMXH3mKOWUoTIWHXfMhFl9vIkeaWoGWgd+FPGRskuie4AojZIUCWf0bKjnVA== ARC-Authentication-Results: i=1; mx1.freebsd.org; none Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4cyv0l4cd9z1P2h; Fri, 31 Oct 2025 21:16:07 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.18.1/8.18.1) with ESMTP id 59VLG7md008229; Fri, 31 Oct 2025 21:16:07 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.18.1/8.18.1/Submit) id 59VLG7T0008227; Fri, 31 Oct 2025 21:16:07 GMT (envelope-from git) Date: Fri, 31 Oct 2025 21:16:07 GMT Message-Id: <202510312116.59VLG7T0008227@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Krzysztof Galazka Subject: git: 420eed4f4592 - stable/14 - igb(4): Fix out-of-bounds register access on VFs List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kgalazka X-Git-Repository: src X-Git-Refname: refs/heads/stable/14 X-Git-Reftype: branch X-Git-Commit: 420eed4f45920511af403d069bb37076f8d56003 Auto-Submitted: auto-generated The branch stable/14 has been updated by kgalazka: URL: https://cgit.FreeBSD.org/src/commit/?id=420eed4f45920511af403d069bb37076f8d56003 commit 420eed4f45920511af403d069bb37076f8d56003 Author: Krzysztof Galazka AuthorDate: 2025-10-24 19:25:47 +0000 Commit: Krzysztof Galazka CommitDate: 2025-10-31 21:07:32 +0000 igb(4): Fix out-of-bounds register access on VFs Virtual Functions have access to a limited number of registers, and their bus space size is lower. Use KASSERT to detect out-of-bounds access and eliminate them to avoid kernel panics in production environment. Signed-off-by: Krzysztof Galazka Reviewed by: jmg Tested by: mateusz.moga_intel.com Approved by: kbowling (mentor), erj (mentor) Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D52976 (cherry picked from commit 2c02e6ca7154593d214b62578f67d9fe7db23d70) --- sys/dev/e1000/e1000_osdep.h | 46 ++++++++++++++++++------- sys/dev/e1000/if_em.c | 83 +++++++++++++++++++++++++-------------------- 2 files changed, 80 insertions(+), 49 deletions(-) diff --git a/sys/dev/e1000/e1000_osdep.h b/sys/dev/e1000/e1000_osdep.h index 893979025f01..ba1c8a16fad1 100644 --- a/sys/dev/e1000/e1000_osdep.h +++ b/sys/dev/e1000/e1000_osdep.h @@ -152,6 +152,9 @@ struct e1000_osdep { bus_space_tag_t mem_bus_space_tag; bus_space_handle_t mem_bus_space_handle; +#ifdef INVARIANTS + bus_size_t mem_bus_space_size; +#endif bus_space_tag_t io_bus_space_tag; bus_space_handle_t io_bus_space_handle; bus_space_tag_t flash_bus_space_tag; @@ -175,27 +178,44 @@ struct e1000_osdep bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \ ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, offset, value) +static __inline uint32_t +e1000_rd32(struct e1000_osdep *osdep, uint32_t reg) +{ + + KASSERT(reg < osdep->mem_bus_space_size, + ("e1000: register offset %#jx too large (max is %#jx)", + (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size)); + + return (bus_space_read_4(osdep->mem_bus_space_tag, + osdep->mem_bus_space_handle, reg)); +} + + +static __inline void +e1000_wr32(struct e1000_osdep *osdep, uint32_t reg, uint32_t value) +{ + + KASSERT(reg < osdep->mem_bus_space_size, + ("e1000: register offset %#jx too large (max is %#jx)", + (uintmax_t)reg, (uintmax_t)osdep->mem_bus_space_size)); + + bus_space_write_4(osdep->mem_bus_space_tag, + osdep->mem_bus_space_handle, reg, value); +} + /* Register READ/WRITE macros */ -#define E1000_READ_REG(hw, reg) \ - bus_space_read_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \ - ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \ - E1000_REGISTER(hw, reg)) +#define E1000_READ_REG(hw, reg) \ + e1000_rd32((hw)->back, E1000_REGISTER(hw, reg)) #define E1000_WRITE_REG(hw, reg, value) \ - bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \ - ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \ - E1000_REGISTER(hw, reg), value) + e1000_wr32((hw)->back, E1000_REGISTER(hw, reg), value) #define E1000_READ_REG_ARRAY(hw, reg, index) \ - bus_space_read_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \ - ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \ - E1000_REGISTER(hw, reg) + ((index)<< 2)) + e1000_rd32((hw)->back, E1000_REGISTER(hw, reg) + ((index) << 2)) #define E1000_WRITE_REG_ARRAY(hw, reg, index, value) \ - bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \ - ((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \ - E1000_REGISTER(hw, reg) + ((index)<< 2), value) + e1000_wr32((hw)->back, E1000_REGISTER(hw, reg) + ((index) << 2), value) #define E1000_READ_REG_ARRAY_DWORD E1000_READ_REG_ARRAY #define E1000_WRITE_REG_ARRAY_DWORD E1000_WRITE_REG_ARRAY diff --git a/sys/dev/e1000/if_em.c b/sys/dev/e1000/if_em.c index f0ef6051fab1..9040949b36c7 100644 --- a/sys/dev/e1000/if_em.c +++ b/sys/dev/e1000/if_em.c @@ -1575,7 +1575,7 @@ em_if_init(if_ctx_t ctx) E1000_WRITE_REG(&sc->hw, E1000_VET, ETHERTYPE_VLAN); /* Clear bad data from Rx FIFOs */ - if (sc->hw.mac.type >= igb_mac_min) + if (sc->hw.mac.type >= igb_mac_min && !sc->vf_ifp) e1000_rx_fifo_flush_base(&sc->hw); /* Configure for OS presence */ @@ -1595,7 +1595,9 @@ em_if_init(if_ctx_t ctx) /* Don't lose promiscuous settings */ em_if_set_promisc(ctx, if_getflags(ifp)); - e1000_clear_hw_cntrs_base_generic(&sc->hw); + + if (sc->hw.mac.ops.clear_hw_cntrs != NULL) + sc->hw.mac.ops.clear_hw_cntrs(&sc->hw); /* MSI-X configuration for 82574 */ if (sc->hw.mac.type == e1000_82574) { @@ -2374,7 +2376,7 @@ em_if_stop(if_ctx_t ctx) em_flush_desc_rings(sc); e1000_reset_hw(&sc->hw); - if (sc->hw.mac.type >= e1000_82544) + if (sc->hw.mac.type >= e1000_82544 && !sc->vf_ifp) E1000_WRITE_REG(&sc->hw, E1000_WUFC, 0); e1000_led_off(&sc->hw); @@ -2433,6 +2435,9 @@ em_allocate_pci_resources(if_ctx_t ctx) } sc->osdep.mem_bus_space_tag = rman_get_bustag(sc->memory); sc->osdep.mem_bus_space_handle = rman_get_bushandle(sc->memory); +#ifdef INVARIANTS + sc->osdep.mem_bus_space_size = rman_get_size(sc->memory); +#endif sc->hw.hw_addr = (u8 *)&sc->osdep.mem_bus_space_handle; /* Only older adapters use IO mapping */ @@ -3284,11 +3289,13 @@ em_reset(if_ctx_t ctx) /* Issue a global reset */ e1000_reset_hw(hw); - if (hw->mac.type >= igb_mac_min) { - E1000_WRITE_REG(hw, E1000_WUC, 0); - } else { - E1000_WRITE_REG(hw, E1000_WUFC, 0); - em_disable_aspm(sc); + if (!sc->vf_ifp) { + if (hw->mac.type >= igb_mac_min) { + E1000_WRITE_REG(hw, E1000_WUC, 0); + } else { + E1000_WRITE_REG(hw, E1000_WUFC, 0); + em_disable_aspm(sc); + } } if (sc->flags & IGB_MEDIA_RESET) { e1000_setup_init_funcs(hw, true); @@ -3838,7 +3845,7 @@ em_initialize_receive_unit(if_ctx_t ctx) sc->rx_int_delay.value); } - if (hw->mac.type >= em_mac_min) { + if (hw->mac.type >= em_mac_min && !sc->vf_ifp) { uint32_t rfctl; /* Use extended rx descriptor formats */ rfctl = E1000_READ_REG(hw, E1000_RFCTL); @@ -3858,33 +3865,38 @@ em_initialize_receive_unit(if_ctx_t ctx) E1000_WRITE_REG(hw, E1000_RFCTL, rfctl); } - /* Set up L3 and L4 csum Rx descriptor offloads */ - rxcsum = E1000_READ_REG(hw, E1000_RXCSUM); - if (if_getcapenable(ifp) & IFCAP_RXCSUM) { - rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPOFL; - if (hw->mac.type > e1000_82575) - rxcsum |= E1000_RXCSUM_CRCOFL; - else if (hw->mac.type < em_mac_min && - if_getcapenable(ifp) & IFCAP_HWCSUM_IPV6) - rxcsum |= E1000_RXCSUM_IPV6OFL; - } else { - rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL); - if (hw->mac.type > e1000_82575) - rxcsum &= ~E1000_RXCSUM_CRCOFL; - else if (hw->mac.type < em_mac_min) - rxcsum &= ~E1000_RXCSUM_IPV6OFL; - } + /* + * Set up L3 and L4 csum Rx descriptor offloads only on Physical + * Functions. Virtual Functions have no access to this register. + */ + if (!sc->vf_ifp) { + rxcsum = E1000_READ_REG(hw, E1000_RXCSUM); + if (if_getcapenable(ifp) & IFCAP_RXCSUM) { + rxcsum |= E1000_RXCSUM_TUOFL | E1000_RXCSUM_IPOFL; + if (hw->mac.type > e1000_82575) + rxcsum |= E1000_RXCSUM_CRCOFL; + else if (hw->mac.type < em_mac_min && + if_getcapenable(ifp) & IFCAP_HWCSUM_IPV6) + rxcsum |= E1000_RXCSUM_IPV6OFL; + } else { + rxcsum &= ~(E1000_RXCSUM_IPOFL | E1000_RXCSUM_TUOFL); + if (hw->mac.type > e1000_82575) + rxcsum &= ~E1000_RXCSUM_CRCOFL; + else if (hw->mac.type < em_mac_min) + rxcsum &= ~E1000_RXCSUM_IPV6OFL; + } - if (sc->rx_num_queues > 1) { - /* RSS hash needed in the Rx descriptor */ - rxcsum |= E1000_RXCSUM_PCSD; + if (sc->rx_num_queues > 1) { + /* RSS hash needed in the Rx descriptor */ + rxcsum |= E1000_RXCSUM_PCSD; - if (hw->mac.type >= igb_mac_min) - igb_initialize_rss_mapping(sc); - else - em_initialize_rss_mapping(sc); + if (hw->mac.type >= igb_mac_min) + igb_initialize_rss_mapping(sc); + else + em_initialize_rss_mapping(sc); + } + E1000_WRITE_REG(hw, E1000_RXCSUM, rxcsum); } - E1000_WRITE_REG(hw, E1000_RXCSUM, rxcsum); for (i = 0, que = sc->rx_queues; i < sc->rx_num_queues; i++, que++) { struct rx_ring *rxr = &que->rxr; @@ -4392,6 +4404,8 @@ em_get_wakeup(if_ctx_t ctx) switch (sc->hw.mac.type) { case e1000_82542: case e1000_82543: + case e1000_vfadapt: + case e1000_vfadapt_i350: break; case e1000_82544: e1000_read_nvm(&sc->hw, @@ -4437,8 +4451,6 @@ em_get_wakeup(if_ctx_t ctx) case e1000_i354: case e1000_i210: case e1000_i211: - case e1000_vfadapt: - case e1000_vfadapt_i350: apme_mask = E1000_WUC_APME; sc->has_amt = true; eeprom_data = E1000_READ_REG(&sc->hw, E1000_WUC); @@ -4494,7 +4506,6 @@ em_get_wakeup(if_ctx_t ctx) global_quad_port_a = 0; break; } - return; }