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[PATCH kernel-4.19 01/41] net: hns3: remove redundant client_setup_tc handle
by Yang Yingliang 08 Jun '21

08 Jun '21

From: Jian Shen <shenjian15(a)huawei.com> mainline inclusion from mainline-v5.12-rc1 commit ae9e492a366433b97be414d2e90a2e24f8446abf category: bugfix bugzilla: NA CVE: NA ---------------------------- Since the real tx queue number and real rx queue number always be updated when netdev opens, it's redundant to call hclge_client_setup_tc to do the same thing. So remove it. Signed-off-by: Jian Shen <shenjian15(a)huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong(a)huawei.com> Signed-off-by: David S. Miller <davem(a)davemloft.net> Signed-off-by: Yonglong Liu <liuyonglong(a)huawei.com> Reviewed-by: li yongxin <liyongxin1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/net/ethernet/hisilicon/hns3/hnae3.h | 1 - .../net/ethernet/hisilicon/hns3/hns3_enet.c | 15 --------- .../hisilicon/hns3/hns3pf/hclge_dcb.c | 31 ------------------- 3 files changed, 47 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h index e407343fd0954..2e4b5c099fb4e 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h +++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h @@ -216,7 +216,6 @@ struct hnae3_client_ops { int (*init_instance)(struct hnae3_handle *handle); void (*uninit_instance)(struct hnae3_handle *handle, bool reset); void (*link_status_change)(struct hnae3_handle *handle, bool state); - int (*setup_tc)(struct hnae3_handle *handle, u8 tc); int (*reset_notify)(struct hnae3_handle *handle, enum hnae3_reset_notify_type type); void (*process_hw_error)(struct hnae3_handle *handle, diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index e409633748a90..1db68d60794dd 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -4240,20 +4240,6 @@ static void hns3_link_status_change(struct hnae3_handle *handle, bool linkup) } } -static int hns3_client_setup_tc(struct hnae3_handle *handle, u8 tc) -{ - struct hnae3_knic_private_info *kinfo = &handle->kinfo; - struct net_device *ndev = kinfo->netdev; - - if (tc > HNAE3_MAX_TC) - return -EINVAL; - - if (!ndev) - return -ENODEV; - - return hns3_nic_set_real_num_queue(ndev); -} - static void hns3_clear_tx_ring(struct hns3_enet_ring *ring) { while (ring->next_to_clean != ring->next_to_use) { @@ -4682,7 +4668,6 @@ const struct hnae3_client_ops client_ops = { .init_instance = hns3_client_init, .uninit_instance = hns3_client_uninit, .link_status_change = hns3_link_status_change, - .setup_tc = hns3_client_setup_tc, .reset_notify = hns3_reset_notify, .process_hw_error = hns3_process_hw_error, }; diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c index 174a0bde8fe73..bf2f43281fda1 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c @@ -175,29 +175,6 @@ static int hclge_map_update(struct hclge_dev *hdev) return hclge_rss_init_hw(hdev); } -static int hclge_client_setup_tc(struct hclge_dev *hdev) -{ - struct hclge_vport *vport = hdev->vport; - struct hnae3_client *client; - struct hnae3_handle *handle; - int ret; - u32 i; - - for (i = 0; i < hdev->num_vmdq_vport + 1; i++) { - handle = &vport[i].nic; - client = handle->client; - - if (!client || !client->ops || !client->ops->setup_tc) - continue; - - ret = client->ops->setup_tc(handle, hdev->tm_info.num_tc); - if (ret) - return ret; - } - - return 0; -} - static int hclge_notify_down_uinit(struct hclge_dev *hdev) { int ret; @@ -257,10 +234,6 @@ static int hclge_ieee_setets(struct hnae3_handle *h, struct ieee_ets *ets) if (ret) goto err_out; - ret = hclge_client_setup_tc(hdev); - if (ret) - goto err_out; - ret = hclge_notify_init_up(hdev); if (ret) return ret; @@ -424,10 +397,6 @@ static int hclge_setup_tc(struct hnae3_handle *h, u8 tc, u8 *prio_tc) if (ret) goto err_out; - ret = hclge_client_setup_tc(hdev); - if (ret) - goto err_out; - hdev->flag &= ~HCLGE_FLAG_DCB_ENABLE; if (tc > 1) -- 2.25.1

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[PATCH kernel-4.19 1/3] share_pool: Fix address checker
by Yang Yingliang 07 Jun '21

07 Jun '21

From: Tang Yizhou <tangyizhou(a)huawei.com> ascend inclusion category: bugfix bugzilla: 55086 CVE: NA ------------------------------------------------- Address range [MMAP_SHARE_POOL_START, MMAP_SHARE_POOL_16G_START) and [MMAP_SHARE_POOL_16G_START, MMAP_SHARE_POOL_16G_START + MMAP_SHARE_POOL_16G_SIZE) is always valid. Signed-off-by: Peng Wu <wupeng58(a)huawei.com> Signed-off-by: Tang Yizhou <tangyizhou(a)huawei.com> Reviewed-by: Ding Tianhong <dingtianhong(a)huawei.com> Reviewed-by: Kefeng Wang <wangkefeng.wang(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- mm/share_pool.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/mm/share_pool.c b/mm/share_pool.c index ad842151f1c71..995db20a1d3b9 100644 --- a/mm/share_pool.c +++ b/mm/share_pool.c @@ -2603,6 +2603,12 @@ bool sp_config_dvpp_range(size_t start, size_t size, int device_id, int pid) } EXPORT_SYMBOL_GPL(sp_config_dvpp_range); +static bool is_sp_normal_addr(unsigned long addr) +{ + return addr >= MMAP_SHARE_POOL_START && + addr < MMAP_SHARE_POOL_16G_START + MMAP_SHARE_POOL_16G_SIZE; +} + /** * is_sharepool_addr() - Check if a user memory address belongs to share pool. * @addr: the userspace address to be checked. @@ -2615,13 +2621,13 @@ bool is_sharepool_addr(unsigned long addr) bool ret = false; if (sp_area_customized == false) - return addr >= MMAP_SHARE_POOL_START && - addr < (MMAP_SHARE_POOL_16G_START + MMAP_SHARE_POOL_16G_SIZE); + return is_sp_normal_addr(addr); spa = __find_sp_area(addr); if (spa && spa->spg) - ret = addr >= spa->spg->dvpp_va_start && - addr < (spa->spg->dvpp_va_start + spa->spg->dvpp_size); + ret = (addr >= spa->spg->dvpp_va_start && + addr < spa->spg->dvpp_va_start + spa->spg->dvpp_size) || + is_sp_normal_addr(addr); __sp_area_drop(spa); return ret; -- 2.25.1

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[PATCH kernel-4.19 000/104] backport linux-4.19.193
by Yang Yingliang 07 Jun '21

07 Jun '21

Adrian Hunter (2): perf intel-pt: Fix sample instruction bytes perf intel-pt: Fix transaction abort handling Alaa Emad (1): media: dvb: Add check on sp8870_readreg return Alan Stern (1): USB: usbfs: Don't WARN about excessively large memory allocations Alexander Usyskin (1): mei: request autosuspend after sending rx flow control Alexei Starovoitov (1): bpf: extend is_branch_taken to registers Andrey Ignatov (1): selftests/bpf: Test narrow loads with off > 0 in test_verifier Andy Shevchenko (1): platform/x86: intel_punit_ipc: Append MODULE_DEVICE_TABLE for ACPI Anirudh Rayabharam (1): net: fujitsu: fix potential null-ptr-deref Anna Schumaker (1): NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return() Atul Gopinathan (1): serial: max310x: unregister uart driver in case of failure and abort Aurelien Aptel (1): cifs: set server->cipher_type to AES-128-CCM for SMB3.0 Chris Park (1): drm/amd/display: Disconnect non-DP with no EDID Christophe JAILLET (3): net: netcp: Fix an error message net: mdio: thunder: Fix a double free issue in the .remove function net: mdio: octeon: Fix some double free issues Chunfeng Yun (1): usb: core: reduce power-on-good delay time of root hub DENG Qingfang (1): net: dsa: mt7530: fix VLAN traffic leaks Dan Carpenter (5): NFS: fix an incorrect limit in filelayout_decode_layout() net: dsa: fix a crash if ->get_sset_count() fails staging: emxx_udc: fix loop in _nbu2ss_nuke() ASoC: cs35l33: fix an error code in probe() scsi: libsas: Use _safe() loop in sas_resume_port() Daniel Borkmann (2): bpf, test_verifier: switch bpf_get_stack's 0 s> r8 test bpf: Update selftests to reflect new error states Daniele Palmas (1): USB: serial: option: add Telit LE910-S1 compositions 0x7010, 0x7011 Dominik Andreas Schorpp (1): USB: serial: ftdi_sio: add IDs for IDS GmbH Products Dongliang Mu (2): NFC: nci: fix memory leak in nci_allocate_device misc/uss720: fix memory leak in uss720_probe Du Cheng (1): net: caif: remove BUG_ON(dev == NULL) in caif_xmit Felix Fietkau (1): perf jevents: Fix getting maximum number of fds Francesco Ruggeri (1): ipv6: record frag_max_size in atomic fragments in input path Fugang Duan (1): net: fec: fix the potential memory leak in fec_enet_init() Geert Uytterhoeven (1): serial: sh-sci: Fix off-by-one error in FIFO threshold register setting Greg Kroah-Hartman (5): kgdb: fix gcc-11 warnings harder libertas: register sysfs groups properly ASoC: cs43130: handle errors in cs43130_probe() properly media: gspca: properly check for errors in po1030_probe() Linux 4.19.193 Hoang Le (1): Revert "net:tipc: Fix a double free in tipc_sk_mcast_rcv" Jack Pham (1): usb: dwc3: gadget: Enable suspend events Jean Delvare (1): i2c: i801: Don't generate an interrupt on bus reset Jesse Brandeburg (2): ixgbe: fix large MTU request from VF drivers/net/ethernet: clean up unused assignments Jingwen Chen (1): drm/amd/amdgpu: fix refcount leak Johan Hovold (2): net: hso: fix control-request directions USB: trancevibrator: fix control-request direction Johannes Berg (5): mac80211: drop A-MSDUs on old ciphers mac80211: add fragment cache to sta_info mac80211: check defrag PN against current frame mac80211: prevent attacks on TKIP/WEP as well mac80211: do not accept/forward invalid EAPOL frames John Fastabend (1): bpf: Test_verifier, bpf_get_stack return value add <0 Josef Bacik (1): btrfs: do not BUG_ON in link_to_fixup_dir Jussi Maki (1): bpf: Set mac_len in bpf_skb_change_head Kai-Heng Feng (1): platform/x86: hp_accel: Avoid invoking _INI to speed up resume Kees Cook (1): proc: Check /proc/$pid/attr/ writes against file opener Krzysztof Kozlowski (1): i2c: s3c2410: fix possible NULL pointer deref on read message after write Lucas Stankus (1): staging: iio: cdc: ad7746: avoid overwrite of num_channels Lukas Wunner (3): spi: gpio: Don't leak SPI master in probe error path spi: mt7621: Disable clock in probe error path spi: mt7621: Don't leak SPI master in probe error path Mathias Nyman (1): thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue Mathy Vanhoef (4): mac80211: assure all fragments are encrypted mac80211: prevent mixed key and fragment cache attacks mac80211: properly handle A-MSDUs that start with an RFC 1042 header cfg80211: mitigate A-MSDU aggregation attacks Matt Wang (1): scsi: BusLogic: Fix 64-bit system enumeration error for Buslogic Mike Kravetz (1): hugetlbfs: hugetlb_fault_mutex_hash() cleanup Mikulas Patocka (1): dm snapshot: properly fix a crash when an origin has no snapshots Neil Armstrong (1): drm/meson: fix shutdown crash when component not probed Ovidiu Panait (2): bpf: fix up selftests after backports were fixed selftests/bpf: add selftest part of "bpf: improve verifier branch analysis" Pavel Skripkin (1): net: usb: fix memory leak in smsc75xx_bind Peter Zijlstra (1): openrisc: Define memory barrier mb Phillip Potter (2): isdn: mISDNinfineon: check/cleanup ioremap failure correctly in setup_io dmaengine: qcom_hidma: comment platform_driver_register call Piotr Krysiuk (1): bpf, selftests: Fix up some test_verifier cases for unprivileged Randy Dunlap (2): MIPS: alchemy: xxs1500: add gpio-au1000.h header file MIPS: ralink: export rt_sysc_membase for rt2880_wdt.c Rolf Eike Beer (1): iommu/vt-d: Fix sysfs leak in alloc_iommu() Sean MacLennan (1): USB: serial: ti_usb_3410_5052: add startech.com device id Shyam Sundar S K (1): platform/x86: hp-wireless: add AMD's hardware id to the supported list Sriram R (1): ath10k: Validate first subframe of A-MSDU before processing the list Steve French (1): SMB3: incorrect file id in requests compounded with open Taehee Yoo (2): mld: fix panic in mld_newpack() sch_dsmark: fix a NULL deref in qdisc_reset() Tao Liu (1): openvswitch: meter: fix race when getting now_ms. Thadeu Lima de Souza Cascardo (1): Bluetooth: cmtp: fix file refcount when cmtp_attach_device fails Thinh Nguyen (1): usb: dwc3: gadget: Properly track pending and queued SG Tom Seewald (1): char: hpet: add checks after calling ioremap Trond Myklebust (1): NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce() Vladimir Oltean (1): net: dsa: fix error code getting shifted with 4 in dsa_slave_get_sset_count Vladyslav Tarasiuk (1): net/mlx4: Fix EEPROM dump support Wen Gong (1): mac80211: extend protection against mixed key and fragment cache attacks Xin Long (1): tipc: skb_linearize the head skb when reassembling msgs Yoshihiro Shimoda (1): usb: gadget: udc: renesas_usb3: Fix a race in usb3_start_pipen() YueHaibing (1): iio: adc: ad7793: Add missing error code in ad7793_setup() Yunsheng Lin (1): net: hns3: check the return of skb_checksum_help() Zhang Xiaoxu (1): NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config Zhen Lei (1): net: bnx2: Fix error return code in bnx2_init_board() Zheyu Ma (1): serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait' Zolton Jheng (1): USB: serial: pl2303: add device id for ADLINK ND-6530 GC xinhui pan (1): drm/amdgpu: Fix a use-after-free Makefile | 2 +- arch/mips/alchemy/board-xxs1500.c | 1 + arch/mips/ralink/of.c | 2 + arch/openrisc/include/asm/barrier.h | 9 ++ drivers/char/hpet.c | 4 + drivers/dma/qcom/hidma_mgmt.c | 14 ++ drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c | 3 + drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 1 + drivers/gpu/drm/amd/display/dc/core/dc_link.c | 18 +++ drivers/gpu/drm/meson/meson_drv.c | 9 +- drivers/i2c/busses/i2c-i801.c | 6 +- drivers/i2c/busses/i2c-s3c2410.c | 3 + drivers/iio/adc/ad7793.c | 1 + drivers/iommu/dmar.c | 4 +- drivers/isdn/hardware/mISDN/mISDNinfineon.c | 24 ++- drivers/md/dm-snap.c | 2 +- drivers/media/dvb-frontends/sp8870.c | 4 +- drivers/media/usb/gspca/m5602/m5602_po1030.c | 10 +- drivers/misc/kgdbts.c | 3 +- drivers/misc/lis3lv02d/lis3lv02d.h | 1 + drivers/misc/mei/interrupt.c | 3 + drivers/net/caif/caif_serial.c | 1 - drivers/net/dsa/mt7530.c | 8 - drivers/net/ethernet/broadcom/bnx2.c | 2 +- drivers/net/ethernet/brocade/bna/bnad.c | 7 +- drivers/net/ethernet/dec/tulip/de4x5.c | 4 +- drivers/net/ethernet/dec/tulip/media.c | 5 - drivers/net/ethernet/freescale/fec_main.c | 11 +- drivers/net/ethernet/fujitsu/fmvj18x_cs.c | 5 + .../net/ethernet/hisilicon/hns3/hns3_enet.c | 10 +- .../net/ethernet/intel/ixgbe/ixgbe_sriov.c | 16 +- .../net/ethernet/mellanox/mlx4/en_ethtool.c | 4 +- drivers/net/ethernet/mellanox/mlx4/en_tx.c | 2 +- drivers/net/ethernet/mellanox/mlx4/port.c | 107 ++++++++++++- drivers/net/ethernet/micrel/ksz884x.c | 3 +- drivers/net/ethernet/microchip/lan743x_main.c | 6 +- .../net/ethernet/neterion/vxge/vxge-traffic.c | 32 ++-- drivers/net/ethernet/sfc/falcon/farch.c | 29 ++-- drivers/net/ethernet/sis/sis900.c | 5 +- .../net/ethernet/synopsys/dwc-xlgmac-common.c | 2 +- drivers/net/ethernet/ti/davinci_emac.c | 5 +- drivers/net/ethernet/ti/netcp_core.c | 2 +- drivers/net/ethernet/ti/tlan.c | 4 +- drivers/net/ethernet/via/via-velocity.c | 13 -- drivers/net/phy/mdio-octeon.c | 2 - drivers/net/phy/mdio-thunder.c | 1 - drivers/net/usb/hso.c | 4 +- drivers/net/usb/smsc75xx.c | 8 +- drivers/net/wireless/ath/ath10k/htt_rx.c | 61 ++++++- drivers/net/wireless/marvell/libertas/mesh.c | 28 +--- drivers/platform/x86/hp-wireless.c | 2 + drivers/platform/x86/hp_accel.c | 22 ++- drivers/platform/x86/intel_punit_ipc.c | 1 + drivers/scsi/BusLogic.c | 6 +- drivers/scsi/BusLogic.h | 2 +- drivers/scsi/libsas/sas_port.c | 4 +- drivers/spi/spi-gpio.c | 2 +- drivers/staging/emxx_udc/emxx_udc.c | 4 +- drivers/staging/iio/cdc/ad7746.c | 1 - drivers/staging/mt7621-spi/spi-mt7621.c | 10 +- drivers/thunderbolt/dma_port.c | 11 +- drivers/tty/serial/max310x.c | 6 +- drivers/tty/serial/rp2.c | 52 ++---- drivers/tty/serial/sh-sci.c | 4 +- drivers/usb/core/devio.c | 11 +- drivers/usb/core/hub.h | 6 +- drivers/usb/dwc3/gadget.c | 17 +- drivers/usb/gadget/udc/renesas_usb3.c | 5 +- drivers/usb/misc/trancevibrator.c | 4 +- drivers/usb/misc/uss720.c | 1 + drivers/usb/serial/ftdi_sio.c | 3 + drivers/usb/serial/ftdi_sio_ids.h | 7 + drivers/usb/serial/option.c | 4 + drivers/usb/serial/pl2303.c | 1 + drivers/usb/serial/pl2303.h | 1 + drivers/usb/serial/ti_usb_3410_5052.c | 3 + fs/btrfs/tree-log.c | 2 - fs/cifs/smb2pdu.c | 13 +- fs/hugetlbfs/inode.c | 4 +- fs/nfs/filelayout/filelayout.c | 2 +- fs/nfs/nfs4file.c | 2 +- fs/nfs/pagelist.c | 12 +- fs/nfs/pnfs.c | 15 +- fs/proc/base.c | 4 + include/linux/hugetlb.h | 2 +- include/net/cfg80211.h | 4 +- include/net/nfc/nci_core.h | 1 + kernel/bpf/verifier.c | 33 ++-- mm/hugetlb.c | 10 +- mm/userfaultfd.c | 2 +- net/bluetooth/cmtp/core.c | 5 + net/core/filter.c | 1 + net/dsa/master.c | 5 +- net/dsa/slave.c | 12 +- net/ipv6/mcast.c | 3 - net/ipv6/reassembly.c | 4 +- net/mac80211/ieee80211_i.h | 36 ++--- net/mac80211/iface.c | 11 +- net/mac80211/key.c | 7 + net/mac80211/key.h | 2 + net/mac80211/rx.c | 150 ++++++++++++++---- net/mac80211/sta_info.c | 6 +- net/mac80211/sta_info.h | 32 ++++ net/mac80211/wpa.c | 13 +- net/nfc/nci/core.c | 1 + net/nfc/nci/hci.c | 5 + net/openvswitch/meter.c | 8 + net/sched/sch_dsmark.c | 3 +- net/tipc/msg.c | 9 +- net/tipc/socket.c | 5 +- net/wireless/util.c | 7 +- sound/soc/codecs/cs35l33.c | 1 + sound/soc/codecs/cs43130.c | 28 ++-- tools/perf/pmu-events/jevents.c | 2 +- .../util/intel-pt-decoder/intel-pt-decoder.c | 6 +- tools/perf/util/intel-pt.c | 5 +- tools/testing/selftests/bpf/test_verifier.c | 112 ++++++++++--- 117 files changed, 855 insertions(+), 431 deletions(-) create mode 100644 arch/openrisc/include/asm/barrier.h -- 2.25.1

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[PATCH kernel-4.19 1/4] readahead: introduce FMODE_WILLNEED to read first 2MB of file
by Yang Yingliang 05 Jun '21

05 Jun '21

From: Yufen Yu <yuyufen(a)huawei.com> hulk inclusion category: feature bugzilla: NA CVE: NA ------------------------------------------------- In some scenario, likely spark-sql, almost all meta file's size is less then 2MB and applications read these smaller files in random mode. That means, it may issue multiple times random io to rotate disk, which can cause performance degradation. To improve the small files random read, we try to read the first 2MB into pagecache on the first time of read. Then it can avoid multiple random io. In fact, applications can call fadvise system with POSIX_FADV_WILLNEED to achieve this goal. But, some apps may cannot easily do that. So, we provide a new file flag FMODE_WILLNEED. Signed-off-by: Yufen Yu <yuyufen(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/fs.h | 3 +++ mm/readahead.c | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/include/linux/fs.h b/include/linux/fs.h index 36d828c741d5c..05c85ee240aff 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -169,6 +169,9 @@ typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset, /* File does not contribute to nr_files count */ #define FMODE_NOACCOUNT ((__force fmode_t)0x20000000) +/* File will try to read head of the file into pagecache */ +#define FMODE_WILLNEED ((__force fmode_t)0x40000000) + /* * Flag for rw_copy_check_uvector and compat_rw_copy_check_uvector * that indicates that they should check the contents of the iovec are diff --git a/mm/readahead.c b/mm/readahead.c index 205ac348bb4ae..89da1e7f0aee0 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -24,6 +24,7 @@ #include "internal.h" +#define READAHEAD_FIRST_SIZE (2 * 1024 * 1024) /* * Initialise a struct file's readahead state. Assumes that the caller has * memset *ra to zero. @@ -491,6 +492,35 @@ ondemand_readahead(struct address_space *mapping, return ra_submit(ra, mapping, filp); } +/* + * Try to read first @ra_size from head of the file. + */ +static bool page_cache_readahead_from_head(struct address_space *mapping, + struct file *filp, pgoff_t offset, + unsigned long req_size, + unsigned long ra_size) +{ + struct backing_dev_info *bdi = inode_to_bdi(mapping->host); + struct file_ra_state *ra = &filp->f_ra; + unsigned long size = min_t(unsigned long, ra_size, + file_inode(filp)->i_size); + unsigned long nrpages = (size + PAGE_SIZE - 1) / PAGE_SIZE; + unsigned long max_pages; + unsigned int offs = 0; + + /* Cannot read date over target size, back to normal way */ + if (offset + req_size > nrpages) + return false; + + max_pages = max_t(unsigned long, bdi->io_pages, ra->ra_pages); + max_pages = min(max_pages, nrpages); + while (offs < nrpages) { + force_page_cache_readahead(mapping, filp, offs, max_pages); + offs += max_pages; + } + return true; +} + /** * page_cache_sync_readahead - generic file readahead * @mapping: address_space which holds the pagecache and I/O vectors @@ -516,6 +546,12 @@ void page_cache_sync_readahead(struct address_space *mapping, if (blk_cgroup_congested()) return; + /* try to read first READAHEAD_FIRST_SIZE into pagecache */ + if (filp && (filp->f_mode & FMODE_WILLNEED) && + page_cache_readahead_from_head(mapping, filp, + offset, req_size, READAHEAD_FIRST_SIZE)) + return; + /* be dumb */ if (filp && (filp->f_mode & FMODE_RANDOM)) { force_page_cache_readahead(mapping, filp, offset, req_size); -- 2.25.1

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Add support for ACPI device use physical node as pci device, to establish identity mapping
by LeoLiuoc 04 Jun '21

04 Jun '21

When using ACPI device to create identity mapping, if the physical node of the ACPI device is a pci device, domain_1 will be created for these two devices. But if the pci device and other pci devices belong to another domain_2, this will happen conflict and destroy another domain. Such as PCI devices under the PCIE-to-PCI bridge. Therefore, when the physical node of the ACPI device is a PCI device, this patch uses the PCI device to create the domain. In this way, there is only one domain. Signed-off-by: LeoLiu-oc <LeoLiu-oc(a)zhaoxin.com> --- drivers/iommu/intel-iommu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index e111e5d6d269..cf0dc4c80183 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2736,12 +2736,32 @@ static int domain_prepare_identity_map(struct device *dev, return iommu_domain_identity_map(domain, start, end); } +static struct device *acpi_dev_find_pci_dev(struct device *dev) +{ + struct acpi_device_physical_node *pn; + struct acpi_device *adev; + + if (dev->bus == &acpi_bus_type) { + adev = to_acpi_device(dev); + mutex_lock(&adev->physical_node_lock); + list_for_each_entry(pn, &adev->physical_node_list, node) { + if (dev_is_pci(pn->dev)) { + return pn->dev; + } + } + mutex_unlock(&adev->physical_node_lock); + } + + return dev; +} + static int iommu_prepare_identity_map(struct device *dev, unsigned long long start, unsigned long long end) { struct dmar_domain *domain; int ret; + dev = acpi_dev_find_pci_dev(dev); domain = get_domain_for_dev(dev, DEFAULT_DOMAIN_ADDRESS_WIDTH); if (!domain) -- 2.20.1

1 0

[PATCH kernel-4.19 1/5] bpf: add writable context for raw tracepoints
by Yang Yingliang 04 Jun '21

04 Jun '21

From: Matt Mullins <mmullins(a)fb.com> mainline inclusion from mainline-v5.2-rc1 commit 9df1c28bb75217b244257152ab7d788bb2a386d0 category: feature bugzilla: NA CVE: NA ------------------------------------------------------------------------- This is an opt-in interface that allows a tracepoint to provide a safe buffer that can be written from a BPF_PROG_TYPE_RAW_TRACEPOINT program. The size of the buffer must be a compile-time constant, and is checked before allowing a BPF program to attach to a tracepoint that uses this feature. The pointer to this buffer will be the first argument of tracepoints that opt in; the pointer is valid and can be bpf_probe_read() by both BPF_PROG_TYPE_RAW_TRACEPOINT and BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE programs that attach to such a tracepoint, but the buffer to which it points may only be written by the latter. Signed-off-by: Matt Mullins <mmullins(a)fb.com> Acked-by: Yonghong Song <yhs(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Conflict: include/linux/bpf.h include/uapi/linux/bpf.h kernel/bpf/verifier.c Signed-off-by: Yufen Yu <yuyufen(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/bpf.h | 9 +++++++++ include/linux/bpf_types.h | 1 + include/linux/tracepoint-defs.h | 1 + include/trace/bpf_probe.h | 27 +++++++++++++++++++++++++-- include/uapi/linux/bpf.h | 3 +++ kernel/bpf/syscall.c | 8 ++++++-- kernel/bpf/verifier.c | 31 +++++++++++++++++++++++++++++++ kernel/trace/bpf_trace.c | 24 ++++++++++++++++++++++++ 8 files changed, 100 insertions(+), 4 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 685bbc0139add..2eed5ecdcdc75 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -214,6 +214,14 @@ enum bpf_reg_type { PTR_TO_PACKET_META, /* skb->data - meta_len */ PTR_TO_PACKET, /* reg points to skb->data */ PTR_TO_PACKET_END, /* skb->data + headlen */ + PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ + PTR_TO_SOCKET, /* reg points to struct bpf_sock */ + PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ + PTR_TO_SOCK_COMMON, /* reg points to sock_common */ + PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */ + PTR_TO_TCP_SOCK, /* reg points to struct tcp_sock */ + PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */ + PTR_TO_TP_BUFFER, /* reg points to a writable raw tp's buffer */ }; /* The information passed from prog-specific *_is_valid_access @@ -285,6 +293,7 @@ struct bpf_prog_aux { atomic_t refcnt; u32 used_map_cnt; u32 max_ctx_offset; + u32 max_tp_access; u32 stack_depth; u32 id; u32 func_cnt; diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index b3f9156a519ab..b5b9196a30134 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -22,6 +22,7 @@ BPF_PROG_TYPE(BPF_PROG_TYPE_KPROBE, kprobe) BPF_PROG_TYPE(BPF_PROG_TYPE_TRACEPOINT, tracepoint) BPF_PROG_TYPE(BPF_PROG_TYPE_PERF_EVENT, perf_event) BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT, raw_tracepoint) +BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, raw_tracepoint_writable) #endif #ifdef CONFIG_CGROUP_BPF BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_DEVICE, cg_dev) diff --git a/include/linux/tracepoint-defs.h b/include/linux/tracepoint-defs.h index 49ba9cde7e4bb..b29950a19205e 100644 --- a/include/linux/tracepoint-defs.h +++ b/include/linux/tracepoint-defs.h @@ -45,6 +45,7 @@ struct bpf_raw_event_map { struct tracepoint *tp; void *bpf_func; u32 num_args; + u32 writable_size; } __aligned(32); #endif diff --git a/include/trace/bpf_probe.h b/include/trace/bpf_probe.h index 505dae0bed80b..d6e556c0a0852 100644 --- a/include/trace/bpf_probe.h +++ b/include/trace/bpf_probe.h @@ -69,8 +69,7 @@ __bpf_trace_##call(void *__data, proto) \ * to make sure that if the tracepoint handling changes, the * bpf probe will fail to compile unless it too is updated. */ -#undef DEFINE_EVENT -#define DEFINE_EVENT(template, call, proto, args) \ +#define __DEFINE_EVENT(template, call, proto, args, size) \ static inline void bpf_test_probe_##call(void) \ { \ check_trace_callback_type_##call(__bpf_trace_##template); \ @@ -81,12 +80,36 @@ __bpf_trace_tp_map_##call = { \ .tp = &__tracepoint_##call, \ .bpf_func = (void *)__bpf_trace_##template, \ .num_args = COUNT_ARGS(args), \ + .writable_size = size, \ }; +#define FIRST(x, ...) x + +#undef DEFINE_EVENT_WRITABLE +#define DEFINE_EVENT_WRITABLE(template, call, proto, args, size) \ +static inline void bpf_test_buffer_##call(void) \ +{ \ + /* BUILD_BUG_ON() is ignored if the code is completely eliminated, but \ + * BUILD_BUG_ON_ZERO() uses a different mechanism that is not \ + * dead-code-eliminated. \ + */ \ + FIRST(proto); \ + (void)BUILD_BUG_ON_ZERO(size != sizeof(*FIRST(args))); \ +} \ +__DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), size) + +#undef DEFINE_EVENT +#define DEFINE_EVENT(template, call, proto, args) \ + __DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), 0) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) + +#undef DEFINE_EVENT_WRITABLE +#undef __DEFINE_EVENT +#undef FIRST + #endif /* CONFIG_BPF_EVENTS */ diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 2bbae9e2786ea..b6ff566503d11 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -154,6 +154,9 @@ enum bpf_prog_type { BPF_PROG_TYPE_LWT_SEG6LOCAL, BPF_PROG_TYPE_LIRC_MODE2, BPF_PROG_TYPE_SK_REUSEPORT, + BPF_PROG_TYPE_FLOW_DISSECTOR, + BPF_PROG_TYPE_CGROUP_SYSCTL, + BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, }; enum bpf_attach_type { diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index fc0628d133166..116c8b32c5716 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1578,12 +1578,16 @@ static int bpf_raw_tracepoint_open(const union bpf_attr *attr) } raw_tp->btp = btp; - prog = bpf_prog_get_type(attr->raw_tracepoint.prog_fd, - BPF_PROG_TYPE_RAW_TRACEPOINT); + prog = bpf_prog_get(attr->raw_tracepoint.prog_fd); if (IS_ERR(prog)) { err = PTR_ERR(prog); goto out_free_tp; } + if (prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT && + prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE) { + err = -EINVAL; + goto out_put_prog; + } err = bpf_probe_register(raw_tp->btp, prog); if (err) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index b748ec3dd6ba0..623c50e19ece9 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -260,6 +260,7 @@ static const char * const reg_type_str[] = { [PTR_TO_PACKET] = "pkt", [PTR_TO_PACKET_META] = "pkt_meta", [PTR_TO_PACKET_END] = "pkt_end", + [PTR_TO_TP_BUFFER] = "tp_buffer", }; static char slot_type_char[] = { @@ -1590,6 +1591,32 @@ static int check_ctx_reg(struct bpf_verifier_env *env, return 0; } +static int check_tp_buffer_access(struct bpf_verifier_env *env, + const struct bpf_reg_state *reg, + int regno, int off, int size) +{ + if (off < 0) { + verbose(env, + "R%d invalid tracepoint buffer access: off=%d, size=%d", + regno, off, size); + return -EACCES; + } + if (!tnum_is_const(reg->var_off) || reg->var_off.value) { + char tn_buf[48]; + + tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off); + verbose(env, + "R%d invalid variable buffer offset: off=%d, var_off=%s", + regno, off, tn_buf); + return -EACCES; + } + if (off + size > env->prog->aux->max_tp_access) + env->prog->aux->max_tp_access = off + size; + + return 0; +} + + /* truncate register to smaller size (in bytes) * must be called with size < BPF_REG_SIZE */ @@ -1709,6 +1736,10 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn err = check_packet_access(env, regno, off, size, false); if (!err && t == BPF_READ && value_regno >= 0) mark_reg_unknown(env, regs, value_regno); + } else if (reg->type == PTR_TO_TP_BUFFER) { + err = check_tp_buffer_access(env, reg, regno, off, size); + if (!err && t == BPF_READ && value_regno >= 0) + mark_reg_unknown(env, regs, value_regno); } else { verbose(env, "R%d invalid mem access '%s'\n", regno, reg_type_str[reg->type]); diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index bb5e8b1922a62..b8726b8a46022 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -978,6 +978,27 @@ const struct bpf_verifier_ops raw_tracepoint_verifier_ops = { const struct bpf_prog_ops raw_tracepoint_prog_ops = { }; +static bool raw_tp_writable_prog_is_valid_access(int off, int size, + enum bpf_access_type type, + const struct bpf_prog *prog, + struct bpf_insn_access_aux *info) +{ + if (off == 0) { + if (size != sizeof(u64) || type != BPF_READ) + return false; + info->reg_type = PTR_TO_TP_BUFFER; + } + return raw_tp_prog_is_valid_access(off, size, type, prog, info); +} + +const struct bpf_verifier_ops raw_tracepoint_writable_verifier_ops = { + .get_func_proto = raw_tp_prog_func_proto, + .is_valid_access = raw_tp_writable_prog_is_valid_access, +}; + +const struct bpf_prog_ops raw_tracepoint_writable_prog_ops = { +}; + static bool pe_prog_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) @@ -1267,6 +1288,9 @@ static int __bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog * if (prog->aux->max_ctx_offset > btp->num_args * sizeof(u64)) return -EINVAL; + if (prog->aux->max_tp_access > btp->writable_size) + return -EINVAL; + return tracepoint_probe_register(tp, (void *)btp->bpf_func, prog); } -- 2.25.1

1 4

[PATCH openEuler-1.0-LTS 1/4] bpf: add writable context for raw tracepoints
by Yang Yingliang 03 Jun '21

03 Jun '21

From: Matt Mullins <mmullins(a)fb.com> mainline inclusion from mainline-v5.2-rc1 commit 9df1c28bb75217b244257152ab7d788bb2a386d0 category: feature bugzilla: NA CVE: NA ------------------------------------------------------------------------- This is an opt-in interface that allows a tracepoint to provide a safe buffer that can be written from a BPF_PROG_TYPE_RAW_TRACEPOINT program. The size of the buffer must be a compile-time constant, and is checked before allowing a BPF program to attach to a tracepoint that uses this feature. The pointer to this buffer will be the first argument of tracepoints that opt in; the pointer is valid and can be bpf_probe_read() by both BPF_PROG_TYPE_RAW_TRACEPOINT and BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE programs that attach to such a tracepoint, but the buffer to which it points may only be written by the latter. Signed-off-by: Matt Mullins <mmullins(a)fb.com> Acked-by: Yonghong Song <yhs(a)fb.com> Signed-off-by: Alexei Starovoitov <ast(a)kernel.org> Conflict: include/linux/bpf.h include/uapi/linux/bpf.h kernel/bpf/verifier.c Signed-off-by: Yufen Yu <yuyufen(a)huawei.com> Reviewed-by: Hou Tao <houtao1(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- include/linux/bpf.h | 9 +++++++++ include/linux/bpf_types.h | 1 + include/linux/tracepoint-defs.h | 1 + include/trace/bpf_probe.h | 27 +++++++++++++++++++++++++-- include/uapi/linux/bpf.h | 3 +++ kernel/bpf/syscall.c | 8 ++++++-- kernel/bpf/verifier.c | 31 +++++++++++++++++++++++++++++++ kernel/trace/bpf_trace.c | 24 ++++++++++++++++++++++++ 8 files changed, 100 insertions(+), 4 deletions(-) diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 16f6beef5cad7..5d2208b641f99 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -213,6 +213,14 @@ enum bpf_reg_type { PTR_TO_PACKET_META, /* skb->data - meta_len */ PTR_TO_PACKET, /* reg points to skb->data */ PTR_TO_PACKET_END, /* skb->data + headlen */ + PTR_TO_FLOW_KEYS, /* reg points to bpf_flow_keys */ + PTR_TO_SOCKET, /* reg points to struct bpf_sock */ + PTR_TO_SOCKET_OR_NULL, /* reg points to struct bpf_sock or NULL */ + PTR_TO_SOCK_COMMON, /* reg points to sock_common */ + PTR_TO_SOCK_COMMON_OR_NULL, /* reg points to sock_common or NULL */ + PTR_TO_TCP_SOCK, /* reg points to struct tcp_sock */ + PTR_TO_TCP_SOCK_OR_NULL, /* reg points to struct tcp_sock or NULL */ + PTR_TO_TP_BUFFER, /* reg points to a writable raw tp's buffer */ }; /* The information passed from prog-specific *_is_valid_access @@ -276,6 +284,7 @@ struct bpf_prog_aux { atomic_t refcnt; u32 used_map_cnt; u32 max_ctx_offset; + u32 max_tp_access; u32 stack_depth; u32 id; u32 func_cnt; diff --git a/include/linux/bpf_types.h b/include/linux/bpf_types.h index cd26c090e7c06..272ed2d3a8fc4 100644 --- a/include/linux/bpf_types.h +++ b/include/linux/bpf_types.h @@ -22,6 +22,7 @@ BPF_PROG_TYPE(BPF_PROG_TYPE_KPROBE, kprobe) BPF_PROG_TYPE(BPF_PROG_TYPE_TRACEPOINT, tracepoint) BPF_PROG_TYPE(BPF_PROG_TYPE_PERF_EVENT, perf_event) BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT, raw_tracepoint) +BPF_PROG_TYPE(BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, raw_tracepoint_writable) #endif #ifdef CONFIG_CGROUP_BPF BPF_PROG_TYPE(BPF_PROG_TYPE_CGROUP_DEVICE, cg_dev) diff --git a/include/linux/tracepoint-defs.h b/include/linux/tracepoint-defs.h index 49ba9cde7e4bb..b29950a19205e 100644 --- a/include/linux/tracepoint-defs.h +++ b/include/linux/tracepoint-defs.h @@ -45,6 +45,7 @@ struct bpf_raw_event_map { struct tracepoint *tp; void *bpf_func; u32 num_args; + u32 writable_size; } __aligned(32); #endif diff --git a/include/trace/bpf_probe.h b/include/trace/bpf_probe.h index 505dae0bed80b..d6e556c0a0852 100644 --- a/include/trace/bpf_probe.h +++ b/include/trace/bpf_probe.h @@ -69,8 +69,7 @@ __bpf_trace_##call(void *__data, proto) \ * to make sure that if the tracepoint handling changes, the * bpf probe will fail to compile unless it too is updated. */ -#undef DEFINE_EVENT -#define DEFINE_EVENT(template, call, proto, args) \ +#define __DEFINE_EVENT(template, call, proto, args, size) \ static inline void bpf_test_probe_##call(void) \ { \ check_trace_callback_type_##call(__bpf_trace_##template); \ @@ -81,12 +80,36 @@ __bpf_trace_tp_map_##call = { \ .tp = &__tracepoint_##call, \ .bpf_func = (void *)__bpf_trace_##template, \ .num_args = COUNT_ARGS(args), \ + .writable_size = size, \ }; +#define FIRST(x, ...) x + +#undef DEFINE_EVENT_WRITABLE +#define DEFINE_EVENT_WRITABLE(template, call, proto, args, size) \ +static inline void bpf_test_buffer_##call(void) \ +{ \ + /* BUILD_BUG_ON() is ignored if the code is completely eliminated, but \ + * BUILD_BUG_ON_ZERO() uses a different mechanism that is not \ + * dead-code-eliminated. \ + */ \ + FIRST(proto); \ + (void)BUILD_BUG_ON_ZERO(size != sizeof(*FIRST(args))); \ +} \ +__DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), size) + +#undef DEFINE_EVENT +#define DEFINE_EVENT(template, call, proto, args) \ + __DEFINE_EVENT(template, call, PARAMS(proto), PARAMS(args), 0) #undef DEFINE_EVENT_PRINT #define DEFINE_EVENT_PRINT(template, name, proto, args, print) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) + +#undef DEFINE_EVENT_WRITABLE +#undef __DEFINE_EVENT +#undef FIRST + #endif /* CONFIG_BPF_EVENTS */ diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index 05228b70673be..261dafff64271 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -153,6 +153,9 @@ enum bpf_prog_type { BPF_PROG_TYPE_LWT_SEG6LOCAL, BPF_PROG_TYPE_LIRC_MODE2, BPF_PROG_TYPE_SK_REUSEPORT, + BPF_PROG_TYPE_FLOW_DISSECTOR, + BPF_PROG_TYPE_CGROUP_SYSCTL, + BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE, }; enum bpf_attach_type { diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 6a67eb6545d14..30253fb4254e4 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -1562,12 +1562,16 @@ static int bpf_raw_tracepoint_open(const union bpf_attr *attr) } raw_tp->btp = btp; - prog = bpf_prog_get_type(attr->raw_tracepoint.prog_fd, - BPF_PROG_TYPE_RAW_TRACEPOINT); + prog = bpf_prog_get(attr->raw_tracepoint.prog_fd); if (IS_ERR(prog)) { err = PTR_ERR(prog); goto out_free_tp; } + if (prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT && + prog->type != BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE) { + err = -EINVAL; + goto out_put_prog; + } err = bpf_probe_register(raw_tp->btp, prog); if (err) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index f535092079100..1efbf7e684fde 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -261,6 +261,7 @@ static const char * const reg_type_str[] = { [PTR_TO_PACKET] = "pkt", [PTR_TO_PACKET_META] = "pkt_meta", [PTR_TO_PACKET_END] = "pkt_end", + [PTR_TO_TP_BUFFER] = "tp_buffer", }; static void print_liveness(struct bpf_verifier_env *env, @@ -1678,6 +1679,32 @@ static int check_ctx_reg(struct bpf_verifier_env *env, return 0; } +static int check_tp_buffer_access(struct bpf_verifier_env *env, + const struct bpf_reg_state *reg, + int regno, int off, int size) +{ + if (off < 0) { + verbose(env, + "R%d invalid tracepoint buffer access: off=%d, size=%d", + regno, off, size); + return -EACCES; + } + if (!tnum_is_const(reg->var_off) || reg->var_off.value) { + char tn_buf[48]; + + tnum_strn(tn_buf, sizeof(tn_buf), reg->var_off); + verbose(env, + "R%d invalid variable buffer offset: off=%d, var_off=%s", + regno, off, tn_buf); + return -EACCES; + } + if (off + size > env->prog->aux->max_tp_access) + env->prog->aux->max_tp_access = off + size; + + return 0; +} + + /* truncate register to smaller size (in bytes) * must be called with size < BPF_REG_SIZE */ @@ -1797,6 +1824,10 @@ static int check_mem_access(struct bpf_verifier_env *env, int insn_idx, u32 regn err = check_packet_access(env, regno, off, size, false); if (!err && t == BPF_READ && value_regno >= 0) mark_reg_unknown(env, regs, value_regno); + } else if (reg->type == PTR_TO_TP_BUFFER) { + err = check_tp_buffer_access(env, reg, regno, off, size); + if (!err && t == BPF_READ && value_regno >= 0) + mark_reg_unknown(env, regs, value_regno); } else { verbose(env, "R%d invalid mem access '%s'\n", regno, reg_type_str[reg->type]); diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c index bb5e8b1922a62..b8726b8a46022 100644 --- a/kernel/trace/bpf_trace.c +++ b/kernel/trace/bpf_trace.c @@ -978,6 +978,27 @@ const struct bpf_verifier_ops raw_tracepoint_verifier_ops = { const struct bpf_prog_ops raw_tracepoint_prog_ops = { }; +static bool raw_tp_writable_prog_is_valid_access(int off, int size, + enum bpf_access_type type, + const struct bpf_prog *prog, + struct bpf_insn_access_aux *info) +{ + if (off == 0) { + if (size != sizeof(u64) || type != BPF_READ) + return false; + info->reg_type = PTR_TO_TP_BUFFER; + } + return raw_tp_prog_is_valid_access(off, size, type, prog, info); +} + +const struct bpf_verifier_ops raw_tracepoint_writable_verifier_ops = { + .get_func_proto = raw_tp_prog_func_proto, + .is_valid_access = raw_tp_writable_prog_is_valid_access, +}; + +const struct bpf_prog_ops raw_tracepoint_writable_prog_ops = { +}; + static bool pe_prog_is_valid_access(int off, int size, enum bpf_access_type type, const struct bpf_prog *prog, struct bpf_insn_access_aux *info) @@ -1267,6 +1288,9 @@ static int __bpf_probe_register(struct bpf_raw_event_map *btp, struct bpf_prog * if (prog->aux->max_ctx_offset > btp->num_args * sizeof(u64)) return -EINVAL; + if (prog->aux->max_tp_access > btp->writable_size) + return -EINVAL; + return tracepoint_probe_register(tp, (void *)btp->bpf_func, prog); } -- 2.25.1

1 3

[PATCH kernel-4.19] x86/tsc: Respect tsc command line paraemeter for clocksource_tsc_early
by Yang Yingliang 02 Jun '21

02 Jun '21

From: Michael Zhivich <mzhivich(a)akamai.com> mainline inclusion from mainline-v5.4-rc4 commit 63ec58b44fcc05efd1542045abd7faf056ac27d9 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I3T8ZP?from=project-issue CVE: NA -------------------------------- The introduction of clocksource_tsc_early broke the functionality of "tsc=reliable" and "tsc=nowatchdog" command line parameters, since clocksource_tsc_early is unconditionally registered with CLOCK_SOURCE_MUST_VERIFY and thus put on the watchdog list. This can cause the TSC to be declared unstable during boot: clocksource: timekeeping watchdog on CPU0: Marking clocksource 'tsc-early' as unstable because the skew is too large: clocksource: 'refined-jiffies' wd_now: fffb7018 wd_last: fffb6e9d mask: ffffffff clocksource: 'tsc-early' cs_now: 68a6a7070f6a0 cs_last: 68a69ab6f74d6 mask: ffffffffffffffff tsc: Marking TSC unstable due to clocksource watchdog The corresponding elapsed times are cs_nsec=1224152026 and wd_nsec=378942392, so the watchdog differs from TSC by 0.84 seconds. This happens when HPET is not available and jiffies are used as the TSC watchdog instead and the jiffies update is not happening due to lost timer interrupts in periodic mode, which can happen e.g. with expensive debug mechanisms enabled or under massive overload conditions in virtualized environments. Before the introduction of the early TSC clocksource the command line parameters "tsc=reliable" and "tsc=nowatchdog" could be used to work around this issue. Restore the behaviour by disabling the watchdog if requested on the kernel command line. [ tglx: Clarify changelog ] Fixes: aa83c45762a24 ("x86/tsc: Introduce early tsc clocksource") Signed-off-by: Michael Zhivich <mzhivich(a)akamai.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Link: https://lkml.kernel.org/r/20191024175945.14338-1-mzhivich@akamai.com [wangxiongfeng: remove 'no_tsc_watchdog' in the origin patch.] Signed-off-by: Xiongfeng Wang <wangxiongfeng2(a)huawei.com> Reviewed-by: Jian Cheng <cj.chengjian(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- arch/x86/kernel/tsc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 03b7529333a67..b1ae78bdba50b 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1483,6 +1483,9 @@ void __init tsc_init(void) return; } + if (tsc_clocksource_reliable) + clocksource_tsc_early.flags &= ~CLOCK_SOURCE_MUST_VERIFY; + clocksource_register_khz(&clocksource_tsc_early, tsc_khz); detect_art(); } -- 2.25.1

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[PATCH openEuler-1.0-LTS 01/30] cpuidle: menu: Do not update last_state_idx in menu_select()
by Yang Yingliang 01 Jun '21

01 Jun '21

From: "Rafael J. Wysocki" <rafael.j.wysocki(a)intel.com> mainline inclusion from mainline-4.20 commit eb40a380bff28f84b6583bba6786b46ef26ef548 category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=34 CVE: NA It is not necessary to update data->last_state_idx in menu_select() as it only is used in menu_update() which only runs when data->needs_update is set and that is set only when updating data->last_state_idx in menu_reflect(). Accordingly, drop the update of data->last_state_idx from menu_select() and get rid of the (now redundant) "out" label from it. No intentional behavior changes. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Yubo Miao <miaoyubo(a)huawei.com> Signed-off-by: Xiangyou Xie <xiexiangyou(a)huawei.com> Reviewed-by: Hailiang Zhang <zhang.zhanghailiang(a)huawei.com> Reviewed-by: Hanjun Guo <guohanjun(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Signed-off-by: Jiajun Chen <chenjiajun8(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- drivers/cpuidle/governors/menu.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index ff0ebec40f859..3a48e4e1c175d 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -403,7 +403,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, s->target_residency <= ktime_to_us(delta_next)) idx = i; - goto out; + return idx; } if (s->exit_latency > latency_req) { /* @@ -450,10 +450,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev, } } -out: - data->last_state_idx = idx; - - return data->last_state_idx; + return idx; } /** -- 2.25.1

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[PATCH kernel-4.19 1/3] bpf: Wrap aux data inside bpf_sanitize_info container
by Yang Yingliang 01 Jun '21

01 Jun '21

From: Daniel Borkmann <daniel(a)iogearbox.net> mainline inclusion from mainline-v5.13-rc4 commit 3d0220f6861d713213b015b582e9f21e5b28d2e0 category: bugfix bugzilla: NA CVE: CVE-2021-33200 -------------------------------- Add a container structure struct bpf_sanitize_info which holds the current aux info, and update call-sites to sanitize_ptr_alu() to pass it in. This is needed for passing in additional state later on. Signed-off-by: Daniel Borkmann <daniel(a)iogearbox.net> Reviewed-by: Piotr Krysiuk <piotras(a)gmail.com> Acked-by: Alexei Starovoitov <ast(a)kernel.org> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> Reviewed-by: Kuohai Xu <xukuohai(a)huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng(a)huawei.com> Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com> --- kernel/bpf/verifier.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index df67ba7c4b736..bfd813ac8c806 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -2815,15 +2815,19 @@ static bool sanitize_needed(u8 opcode) return opcode == BPF_ADD || opcode == BPF_SUB; } +struct bpf_sanitize_info { + struct bpf_insn_aux_data aux; +}; + static int sanitize_ptr_alu(struct bpf_verifier_env *env, struct bpf_insn *insn, const struct bpf_reg_state *ptr_reg, const struct bpf_reg_state *off_reg, struct bpf_reg_state *dst_reg, - struct bpf_insn_aux_data *tmp_aux, + struct bpf_sanitize_info *info, const bool commit_window) { - struct bpf_insn_aux_data *aux = commit_window ? cur_aux(env) : tmp_aux; + struct bpf_insn_aux_data *aux = commit_window ? cur_aux(env) : &info->aux; struct bpf_verifier_state *vstate = env->cur_state; bool off_is_imm = tnum_is_const(off_reg->var_off); bool off_is_neg = off_reg->smin_value < 0; @@ -2852,8 +2856,8 @@ static int sanitize_ptr_alu(struct bpf_verifier_env *env, /* In commit phase we narrow the masking window based on * the observed pointer move after the simulated operation. */ - alu_state = tmp_aux->alu_state; - alu_limit = abs(tmp_aux->alu_limit - alu_limit); + alu_state = info->aux.alu_state; + alu_limit = abs(info->aux.alu_limit - alu_limit); } else { alu_state = off_is_neg ? BPF_ALU_NEG_VALUE : 0; alu_state |= off_is_imm ? BPF_ALU_IMMEDIATE : 0; @@ -3014,7 +3018,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, smin_ptr = ptr_reg->smin_value, smax_ptr = ptr_reg->smax_value; u64 umin_val = off_reg->umin_value, umax_val = off_reg->umax_value, umin_ptr = ptr_reg->umin_value, umax_ptr = ptr_reg->umax_value; - struct bpf_insn_aux_data tmp_aux = {}; + struct bpf_sanitize_info info = {}; u8 opcode = BPF_OP(insn->code); u32 dst = insn->dst_reg; int ret; @@ -3066,7 +3070,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, if (sanitize_needed(opcode)) { ret = sanitize_ptr_alu(env, insn, ptr_reg, off_reg, dst_reg, - &tmp_aux, false); + &info, false); if (ret < 0) return sanitize_err(env, insn, ret, off_reg, dst_reg); } @@ -3208,7 +3212,7 @@ static int adjust_ptr_min_max_vals(struct bpf_verifier_env *env, return -EACCES; if (sanitize_needed(opcode)) { ret = sanitize_ptr_alu(env, insn, dst_reg, off_reg, dst_reg, - &tmp_aux, true); + &info, true); if (ret < 0) return sanitize_err(env, insn, ret, off_reg, dst_reg); } -- 2.25.1

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