May 2018 - Linux-stable-mirror

by Daniel Sangorrin

Hello Greg, After running LTP with Fuego on the LTS kernel 4.4.y, there were a few test cases failing that I thought needed some investigation. I reviewed the first one (fcntl35 and fcntl35_64) so far. According to the comments on LTP's fcntl35.c file (by Xiao Yang <yangx.jy(a)cn.fujitsu.com>) the bug tested by this test case was fixed by: pipe: cap initial pipe capacity according to pipe-max-size commit 086e774a57fba4695f14383c0818994c0b31da7c Author: Michael Kerrisk (man-pages) <mtk.manpages(a)gmail.com> Date: Tue Oct 11 13:53:43 2016 -0700 I backported that patch (see next e-mail), tested again and confirmed that the patch fixed the bug (or at least the error message in LTP's test). Before: fcntl35.c:98: FAIL: an unprivileged user init the capacity of a pipe to 65536 unexpectedly, expected 4096 After: fcntl35.c:101: PASS: an unprivileged user init the capacity of a pipe to 4096 successfully Thanks, Daniel Sangorrin

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[PATCH 4.4 000/190] 4.4.128-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.4.128 release. There are 190 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Fri Apr 13 18:34:54 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.4.128-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.4.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.4.128-rc1 David Ahern <dsahern(a)gmail.com> vrf: Fix use after free and double free in vrf_finish_output Paolo Abeni <pabeni(a)redhat.com> ipv6: the entire IPv6 header chain must fit the first fragment Jeff Barnhill <0xeffeff(a)gmail.com> net/ipv6: Increment OUTxxx counters after netfilter hook Craig Dillabaugh <cdillaba(a)mojatatu.com> net sched actions: fix dumping which requires several messages to user space Heiner Kallweit <hkallweit1(a)gmail.com> r8169: fix setting driver_data after register_netdev Eric Dumazet <edumazet(a)google.com> vti6: better validate user provided tunnel names Eric Dumazet <edumazet(a)google.com> ip6_tunnel: better validate user provided tunnel names Eric Dumazet <edumazet(a)google.com> ip6_gre: better validate user provided tunnel names Eric Dumazet <edumazet(a)google.com> ipv6: sit: better validate user provided tunnel names Eric Dumazet <edumazet(a)google.com> ip_tunnel: better validate user provided tunnel names Eric Dumazet <edumazet(a)google.com> net: fool proof dev_valid_name() Xin Long <lucien.xin(a)gmail.com> bonding: process the err returned by dev_set_allmulti properly in bond_enslave Xin Long <lucien.xin(a)gmail.com> bonding: move dev_mc_sync after master_upper_dev_link in bond_enslave Xin Long <lucien.xin(a)gmail.com> bonding: fix the err path for dev hwaddr sync in bond_enslave Hangbin Liu <liuhangbin(a)gmail.com> vlan: also check phy_driver ts_info for vlan's real device Jason Wang <jasowang(a)redhat.com> vhost: correctly remove wait queue during poll failure Kai-Heng Feng <kai.heng.feng(a)canonical.com> sky2: Increase D3 delay to sky2 stops working after suspend Eric Dumazet <edumazet(a)google.com> sctp: sctp_sockaddr_af must check minimal addr length for AF_INET6 Eric Dumazet <edumazet(a)google.com> sctp: do not leak kernel memory to user space Eric Dumazet <edumazet(a)google.com> pptp: remove a buggy dst release in pptp_connect() Davide Caratti <dcaratti(a)redhat.com> net/sched: fix NULL dereference in the error path of tcf_bpf_init() Alexander Potapenko <glider(a)google.com> netlink: make sure nladdr has correct size in netlink_connect() David Ahern <dsahern(a)gmail.com> net/ipv6: Fix route leaking between VRFs Eric Dumazet <edumazet(a)google.com> net: fix possible out-of-bound read in skb_network_protocol() Miguel Fadon Perlines <mfadon(a)teldat.com> arp: fix arp_filter on l3slave devices Arnd Bergmann <arnd(a)arndb.de> Kbuild: provide a __UNIQUE_ID for clang Mel Gorman <mgorman(a)suse.de> futex: Remove requirement for lock_page() in get_futex_key() Theodore Ts'o <tytso(a)mit.edu> random: use lockless method of accessing and updating f->reg_idx Nathan Chancellor <natechancellor(a)gmail.com> virtio_net: check return value of skb_to_sgvec in one more location Jason A. Donenfeld <Jason(a)zx2c4.com> virtio_net: check return value of skb_to_sgvec always Jason A. Donenfeld <Jason(a)zx2c4.com> rxrpc: check return value of skb_to_sgvec always Jason A. Donenfeld <Jason(a)zx2c4.com> ipsec: check return value of skb_to_sgvec always Jiri Olsa <jolsa(a)kernel.org> perf tools: Fix copyfile_offset update of output offset Arjun Vynipadath <arjun(a)chelsio.com> cxgb4vf: Fix SGE FL buffer initialization logic for 64K pages Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> EDAC, mv64x60: Fix an error handling path Tony Lindgren <tony(a)atomide.com> tty: n_gsm: Allow ADM response in addition to UA for control dlci Ming Lei <ming.lei(a)redhat.com> blk-mq: fix kernel oops in blk_mq_tag_idle() chenxiang <chenxiang66(a)hisilicon.com> scsi: libsas: initialize sas_phy status according to response of DISCOVER Jason Yan <yanaijie(a)huawei.com> scsi: libsas: fix error when getting phy events Jason Yan <yanaijie(a)huawei.com> scsi: libsas: fix memory leak in sas_smp_get_phy_events() Tang Junhui <tang.junhui(a)zte.com.cn> bcache: segregate flash only volume write streams Tang Junhui <tang.junhui(a)zte.com.cn> bcache: stop writeback thread after detaching Roopa Prabhu <roopa(a)cumulusnetworks.com> vxlan: dont migrate permanent fdb entries during learn Stefan Haberland <sth(a)linux.vnet.ibm.com> s390/dasd: fix hanging safe offline Bob Moore <robert.moore(a)intel.com> ACPICA: Disassembler: Abort on an invalid/unknown AML opcode Lv Zheng <lv.zheng(a)intel.com> ACPICA: Events: Add runtime stub support for event APIs Christophe Jaillet <christophe.jaillet(a)wanadoo.fr> cpuidle: dt: Add missing 'of_node_put()' Marcel Holtmann <marcel(a)holtmann.org> Bluetooth: Send HCI Set Event Mask Page 2 command only when needed Lorenzo Bianconi <lorenzo.bianconi83(a)gmail.com> iio: magnetometer: st_magn_spi: fix spi_device_id table Jag Raman <jag.raman(a)oracle.com> sparc64: ldc abort during vds iso boot Xin Long <lucien.xin(a)gmail.com> sctp: fix recursive locking warning in sctp_do_peeloff Mintz, Yuval <Yuval.Mintz(a)cavium.com> bnx2x: Allow vfs to disable txvlan offload Arnd Bergmann <arnd(a)arndb.de> xen: avoid type warning in xchg_xen_ulong Willem de Bruijn <willemb(a)google.com> skbuff: only inherit relevant tx_flags Namhyung Kim <namhyung(a)kernel.org> perf tests: Decompress kernel module before objdump Christian Lamparter <chunkeey(a)googlemail.com> net: emac: fix reset timeout with AR8035 phy James Wang <jnwang(a)suse.com> Fix loop device flush before configure v3 Marcin Nowakowski <marcin.nowakowski(a)imgtec.com> MIPS: kprobes: flush_insn_slot should flush only if probe initialised Marcin Nowakowski <marcin.nowakowski(a)imgtec.com> MIPS: mm: adjust PKMAP location Marcin Nowakowski <marcin.nowakowski(a)imgtec.com> MIPS: mm: fixed mappings: correct initialisation Peter Zijlstra <peterz(a)infradead.org> perf/core: Correct event creation with PERF_FORMAT_GROUP Chris Wilson <chris(a)chris-wilson.co.uk> e1000e: Undo e1000e_pm_freeze if __e1000_shutdown fails Leonard Crestez <leonard.crestez(a)nxp.com> ARM: imx: Add MXC_CPU_IMX6ULL and cpu_is_imx6ull Russell King <rmk+kernel(a)armlinux.org.uk> net: phy: avoid genphy_aneg_done() for PHYs without clause 22 support A Sun <as1033x(a)comcast.net> mceusb: sporadic RX truncation corruption fix Pan Bian <bianpan2016(a)163.com> cx25840: fix unchecked return values Jacob Keller <jacob.e.keller(a)intel.com> e1000e: fix race condition around skb_tstamp_tx() Robert Jarzmik <robert.jarzmik(a)free.fr> tags: honor COMPILED_SOURCE with apart output directory Milian Wolff <milian.wolff(a)kdab.com> perf report: Ensure the perf DSO mapping matches what libdw sees Namhyung Kim <namhyung(a)kernel.org> perf header: Set proper module name when build-id event found Ido Shamay <idos(a)mellanox.com> net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport Talat Batheesh <talatb(a)mellanox.com> net/mlx4: Fix the check in attaching steering rules Haishuang Yan <yanhaishuang(a)cmss.chinamobile.com> sit: reload iphdr in ipip6_rcv Jason A. Donenfeld <Jason(a)zx2c4.com> skbuff: return -EMSGSIZE in skb_to_sgvec to prevent overflow Dmitry Monakhov <dmonakhov(a)openvz.org> bio-integrity: Do not allocate integrity context for bio w/o data Thomas Bogendoerfer <tsbogend(a)alpha.franken.de> Fix serial console on SNI RM400 machines Ganesh Goudar <ganeshgr(a)chelsio.com> cxgb4: fix incorrect cim_la output for T6 Tomi Valkeinen <tomi.valkeinen(a)ti.com> drm/omap: fix tiled buffer stride calculations Jia-Ju Bai <baijiaju1990(a)163.com> mISDN: Fix a sleep-in-atomic bug Jia-Ju Bai <baijiaju1990(a)163.com> qlcnic: Fix a sleep-in-atomic bug in qlcnic_82xx_hw_write_wx_2M and qlcnic_82xx_hw_read_wx_2M Jiri Olsa <jolsa(a)kernel.org> perf trace: Add mmap alias for s390 Michael Ellerman <mpe(a)ellerman.id.au> powerpc/spufs: Fix coredump of SPU contexts Bryan O'Donoghue <pure.logic(a)nexus-software.ie> clk: Fix __set_clk_rates error print-string Sudeep Holla <sudeep.holla(a)arm.com> clk: scpi: fix return type of __scpi_dvfs_round_rate Roman Pen <roman.penyaev(a)profitbricks.com> KVM: SVM: do not zero out segment attributes if segment is unusable or not present Gustavo A. R. Silva <garsilva(a)embeddedor.com> net: freescale: fix potential null pointer dereference NeilBrown <neilb(a)suse.com> SUNRPC: ensure correct error is reported by xs_tcp_setup_socket() Vaibhav Jain <vaibhav(a)linux.vnet.ibm.com> rtc: interface: Validate alarm-time before handling rollover Vaibhav Jain <vaibhav(a)linux.vnet.ibm.com> rtc: opal: Handle disabled TPO in opal_get_tpo_time() Arjun Vynipadath <arjun(a)chelsio.com> cxgb4: FW upgrade fixes Arnd Bergmann <arnd(a)arndb.de> net/mlx5: avoid build warning for uniprocessor Will Deacon <will.deacon(a)arm.com> arm64: futex: Fix undefined behaviour with FUTEX_OP_OPARG_SHIFT usage Arvind Yadav <arvind.yadav.cs(a)gmail.com> dmaengine: imx-sdma: Handle return value of clk_prepare_enable Ivan Mikhaylov <ivan(a)de.ibm.com> powerpc/[booke|4xx]: Don't clobber TCR[WP] when setting TCR[DIE] Miklos Szeredi <mszeredi(a)redhat.com> ovl: filter trusted xattr for non-admin Firo Yang <firogm(a)gmail.com> hdlcdrv: Fix divide by zero in hdlcdrv_ioctl Colin Ian King <colin.king(a)canonical.com> wl1251: check return from call to wl1251_acx_arp_ip_filter Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> ASoC: Intel: sst: Fix the return value of 'sst_send_byte_stream_mrfld()' Linus Walleij <linus.walleij(a)linaro.org> gpio: label descriptors using the device name Pieter \"PoroCYon\" Sluys <pcy(a)national.shitposting.agency> vfb: fix video mode and line_length being set when loaded Chaitra P B <chaitra.basappa(a)broadcom.com> scsi: mpt3sas: Proper handling of set/clear of "ATA command pending" flag. Rafael David Tinoco <rafael.tinoco(a)canonical.com> scsi: libiscsi: Allow sd_shutdown on bad transport Hans de Goede <hdegoede(a)redhat.com> ASoC: Intel: cht_bsw_rt5645: Analog Mic support Mauro Carvalho Chehab <mchehab(a)s-opensource.com> media: videobuf2-core: don't go out of the buffer range Maciej Purski <m.purski(a)samsung.com> hwmon: (ina2xx) Make calibration register value fixed Sowmini Varadhan <sowmini.varadhan(a)oracle.com> rds; Reset rs->rs_bound_addr in rds_add_bound() failure path Hangbin Liu <liuhangbin(a)gmail.com> l2tp: fix missing print session offset info Masami Hiramatsu <mhiramat(a)kernel.org> perf probe: Add warning message if there is unexpected event name Yi Zeng <yizeng(a)asrmicro.com> thermal: power_allocator: fix one race condition issue for thermal_instances list Rasmus Villemoes <rasmus.villemoes(a)prevas.dk> ARM: dts: ls1021a: add "fsl,ls1021a-esdhc" compatible string to esdhc node linzhang <xiaolou4617(a)gmail.com> net: llc: add lock_sock in llc_ui_bind to avoid a race condition Jan H. Schönherr <jschoenh(a)amazon.de> KVM: nVMX: Fix handling of lmsw instruction Nithin Sujir <nsujir(a)tintri.com> bonding: Don't update slave->link until ready to commit KT Liao <kt.liao(a)emc.com.tw> Input: elan_i2c - clear INT before resetting controller Roman Kapl <roman.kapl(a)sysgo.com> net: move somaxconn init from sysctl code Eric Dumazet <edumazet(a)google.com> tcp: better validation of received ack sequences Eryu Guan <eguan(a)redhat.com> ext4: fix off-by-one on max nr_pages in ext4_find_unwritten_pgoff() Michael Schmitz <schmitzmic(a)gmail.com> fix race in drivers/char/random.c:get_reg() Maurizio Lombardi <mlombard(a)redhat.com> scsi: bnx2fc: fix race condition in bnx2fc_get_host_stats() Kuninori Morimoto <kuninori.morimoto.gx(a)renesas.com> ASoC: rsnd: SSI PIO adjust to 24bit mode Dan Carpenter <dan.carpenter(a)oracle.com> pNFS/flexfiles: missing error code in ff_layout_alloc_lseg() Liping Zhang <zlpnobody(a)gmail.com> netfilter: ctnetlink: fix incorrect nf_ct_put during hash resize Dan Carpenter <dan.carpenter(a)oracle.com> libceph: NULL deref on crush_decode() error path Lin Zhang <xiaolou4617(a)gmail.com> net: ieee802154: fix net_device reference release too early Jesper Dangaard Brouer <brouer(a)redhat.com> mlx5: fix bug reading rss_hash_type from CQE Dan Carpenter <dan.carpenter(a)oracle.com> block: fix an error code in add_partition() Stephen Smalley <sds(a)tycho.nsa.gov> selinux: do not check open permission on sockets Tariq Toukan <tariqt(a)mellanox.com> net/mlx5: Tolerate irq_set_affinity_hint() failures Vlastimil Babka <vbabka(a)suse.cz> sched/numa: Use down_read_trylock() for the mmap_sem Tin Huynh <tnhuynh(a)apm.com> leds: pca955x: Correct I2C Functionality Kees Cook <keescook(a)chromium.org> ray_cs: Avoid reading past end of buffer Suman Anna <s-anna(a)ti.com> ARM: davinci: da8xx: Create DSP device only when assigned memory Guoqing Jiang <gqjiang(a)suse.com> md-cluster: fix potential lock issue in add_new_disk Konstantin Khlebnikov <khlebnikov(a)yandex-team.ru> ext4: handle the rest of ext4_mb_load_buddy() ENOMEM errors Nikita Yushchenko <nikita.yoush(a)cogentembedded.com> iio: hi8435: cleanup reset gpio Nikita Yushchenko <nikita.yoush(a)cogentembedded.com> iio: hi8435: avoid garbage event at first enable Antony Antony <antony(a)phenome.org> xfrm: fix state migration copy replay sequence numbers Michael Ellerman <mpe(a)ellerman.id.au> selftests/powerpc: Fix TM resched DSCR test with some compilers Colin Ian King <colin.king(a)canonical.com> ath5k: fix memory leak on buf on failed eeprom read Michael Ellerman <mpe(a)ellerman.id.au> powerpc/mm: Fix virt_addr_valid() etc. on 64-bit hash Varun Prakash <varun(a)chelsio.com> scsi: csiostor: fix use after free in csio_hw_use_fwconfig() Geert Uytterhoeven <geert+renesas(a)glider.be> sh_eth: Use platform device for printing before register_netdev() Geert Uytterhoeven <geert+renesas(a)glider.be> serial: sh-sci: Fix race condition causing garbage during shutdown Vignesh R <vigneshr(a)ti.com> serial: 8250: omap: Disable DMA for console UART Alan Stern <stern(a)rowland.harvard.edu> USB: ene_usb6250: fix SCSI residue overwriting linzhang <xiaolou4617(a)gmail.com> net: x25: fix one potential use-after-free issue Alan Stern <stern(a)rowland.harvard.edu> USB: ene_usb6250: fix first command execution Jisheng Zhang <jszhang(a)marvell.com> usb: chipidea: properly handle host or gadget initialization failure Ihar Hrachyshka <ihrachys(a)redhat.com> arp: honour gratuitous ARP _replies_ Ihar Hrachyshka <ihrachys(a)redhat.com> neighbour: update neigh timestamps iff update is effective Thomas Petazzoni <thomas.petazzoni(a)free-electrons.com> ata: libahci: properly propagate return value of platform_get_irq() Colin Ian King <colin.king(a)canonical.com> btrfs: fix incorrect error return ret being passed to mapping_set_error Pan Bian <bianpan2016(a)163.com> usb: dwc3: keystone: check return value Anup Patel <anup.patel(a)broadcom.com> async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome() Mahesh Bandewar <maheshb(a)google.com> ipv6: avoid dad-failures for addresses with NODAD Fabio Estevam <fabio.estevam(a)nxp.com> ARM: dts: imx6qdl-wandboard: Fix audio channel swap Peter Zijlstra <peterz(a)infradead.org> x86/tsc: Provide 'tsc=unstable' boot parameter Andrea della Porta <sfaragnaus(a)gmail.com> staging: wlan-ng: prism2mgmt.c: fixed a double endian conversion before calling hfa384x_drvr_setconfig16, also fixes relative sparse warning Fabio Estevam <fabio.estevam(a)nxp.com> ARM: dts: imx53-qsrb: Pulldown PMIC IRQ pin Dan Carpenter <dan.carpenter(a)oracle.com> PowerCap: Fix an error code in powercap_register_zone() Doug Berger <opendmb(a)gmail.com> bus: brcmstb_gisb: correct support for 64-bit address output Doug Berger <opendmb(a)gmail.com> bus: brcmstb_gisb: Use register offsets with writes too Christophe JAILLET <christophe.jaillet(a)wanadoo.fr> SMB2: Fix share type handling Neil Horman <nhorman(a)tuxdriver.com> vmxnet3: ensure that adapter is in proper state during force_close Paul Mackerras <paulus(a)ozlabs.org> KVM: PPC: Book3S PR: Check copy_to/from_user return values KT Liao <kt.liao(a)emc.com.tw> Input: elantech - force relative mode on a certain module Dmitry Torokhov <dmitry.torokhov(a)gmail.com> Input: elan_i2c - check if device is there before really probing Colin Ian King <colin.king(a)canonical.com> netxen_nic: set rcode to the return status from the call to netxen_issue_cmd Stefan Wahren <stefan.wahren(a)i2se.com> net: qca_spi: Fix alignment issues in rx path Wen Xiong <wenxiong(a)linux.vnet.ibm.com> blk-mq: NVMe 512B/4K+T10 DIF/DIX format returns I/O error on dd with split op Rabin Vincent <rabinv(a)axis.com> CIFS: silence lockdep splat in cifs_relock_file() Trond Myklebust <trond.myklebust(a)primarydata.com> NFSv4.1: Work around a Linux server bug... Talat Batheesh <talatb(a)mellanox.com> net/mlx4_en: Avoid adding steering rules with invalid ring Heiko Carstens <heiko.carstens(a)de.ibm.com> s390: move _text symbol to address higher than zero Kirill Tkhai <ktkhai(a)virtuozzo.com> pidns: disable pid allocation if pid_ns_prepare_proc() is failed in alloc_pid() Dan Carpenter <dan.carpenter(a)oracle.com> drivers/misc/vmw_vmci/vmci_queue_pair.c: fix a couple integer overflow tests J. Bruce Fields <bfields(a)redhat.com> lockd: fix lockd shutdown race Grygorii Strashko <grygorii.strashko(a)ti.com> net: ethernet: ti: cpsw: adjust cpsw fifos depth for fullduplex flow control Jim Baxter <jim_baxter(a)mentor.com> net: cdc_ncm: Fix TX zero padding Dan Carpenter <dan.carpenter(a)oracle.com> ipmi_ssif: unlock on allocation failure Kees Cook <keescook(a)chromium.org> qlge: Avoid reading past end of buffer Kees Cook <keescook(a)chromium.org> bna: Avoid reading past end of buffer Luca Coelho <luciano.coelho(a)intel.com> mac80211: bail out from prep_connection() if a reconfig is ongoing Steffen Klassert <steffen.klassert(a)secunet.com> af_key: Fix slab-out-of-bounds in pfkey_compile_policy. Bart Van Assche <bart.vanassche(a)sandisk.com> IB/srpt: Fix abort handling Trond Myklebust <trond.myklebust(a)primarydata.com> NFSv4.1: RECLAIM_COMPLETE must handle NFS4ERR_CONN_NOT_BOUND_TO_SESSION Josh Poimboeuf <jpoimboe(a)redhat.com> x86/asm: Don't use RBP as a temporary register in csum_partial_copy_generic() Pan Bian <bianpan2016(a)163.com> rtc: snvs: fix an incorrect check of return value Julia Cartwright <julia(a)ni.com> md/raid5: make use of spin_lock_irq over local_irq_disable + spin_lock Johannes Berg <johannes.berg(a)intel.com> cfg80211: make RATE_INFO_BW_20 the default ------------- Diffstat: Makefile | 4 +- arch/arm/boot/dts/imx53-qsrb.dts | 2 +- arch/arm/boot/dts/imx6qdl-wandboard.dtsi | 1 + arch/arm/boot/dts/ls1021a.dtsi | 2 +- arch/arm/include/asm/xen/events.h | 2 +- arch/arm/mach-davinci/devices-da8xx.c | 10 +++ arch/arm/mach-imx/cpu.c | 3 + arch/arm/mach-imx/mxc.h | 6 ++ arch/arm64/include/asm/futex.h | 8 +- arch/mips/include/asm/kprobes.h | 3 +- arch/mips/include/asm/pgtable-32.h | 7 +- arch/mips/mm/pgtable-32.c | 6 +- arch/powerpc/include/asm/page.h | 12 +++ arch/powerpc/kernel/time.c | 14 +++- arch/powerpc/kvm/book3s_pr_papr.c | 34 ++++++-- arch/powerpc/platforms/cell/spufs/coredump.c | 2 + arch/s390/kernel/vmlinux.lds.S | 8 +- arch/sparc/kernel/ldc.c | 7 +- arch/x86/kernel/tsc.c | 2 + arch/x86/kvm/svm.c | 24 +++--- arch/x86/kvm/vmx.c | 7 +- arch/x86/lib/csum-copy_64.S | 12 +-- block/bio-integrity.c | 3 + block/blk-mq.c | 7 +- block/partition-generic.c | 4 +- crypto/async_tx/async_pq.c | 5 +- drivers/acpi/acpica/evxfevnt.c | 18 ++++ drivers/acpi/acpica/psobject.c | 14 ++++ drivers/ata/libahci_platform.c | 5 +- drivers/block/loop.c | 3 + drivers/bus/brcmstb_gisb.c | 42 +++++----- drivers/char/ipmi/ipmi_ssif.c | 2 + drivers/char/random.c | 10 ++- drivers/clk/clk-conf.c | 2 +- drivers/clk/clk-scpi.c | 6 +- drivers/cpuidle/dt_idle_states.c | 4 +- drivers/dma/imx-sdma.c | 23 +++-- drivers/edac/mv64x60_edac.c | 2 +- drivers/gpio/gpiolib.c | 3 +- drivers/gpu/drm/omapdrm/omap_gem.c | 4 +- drivers/hwmon/ina2xx.c | 87 +++++++++++-------- drivers/iio/adc/hi8435.c | 27 ++++-- drivers/iio/magnetometer/st_magn_spi.c | 2 - drivers/infiniband/ulp/srpt/ib_srpt.c | 6 +- drivers/input/mouse/elan_i2c_core.c | 7 ++ drivers/input/mouse/elan_i2c_i2c.c | 9 +- drivers/input/mouse/elantech.c | 11 +++ drivers/isdn/mISDN/stack.c | 2 +- drivers/leds/leds-pca955x.c | 2 +- drivers/md/bcache/alloc.c | 19 +++-- drivers/md/bcache/super.c | 6 ++ drivers/md/md-cluster.c | 4 +- drivers/md/raid5.c | 17 ++-- drivers/media/i2c/cx25840/cx25840-core.c | 36 ++++---- drivers/media/rc/mceusb.c | 9 +- drivers/media/v4l2-core/videobuf2-core.c | 4 + drivers/misc/vmw_vmci/vmci_queue_pair.c | 10 ++- drivers/net/bonding/bond_main.c | 84 ++++++++++--------- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 19 ++++- drivers/net/ethernet/brocade/bna/bfa_ioc.c | 2 +- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 32 ++++++- drivers/net/ethernet/chelsio/cxgb4vf/sge.c | 23 +++-- drivers/net/ethernet/freescale/fsl_pq_mdio.c | 9 +- drivers/net/ethernet/ibm/emac/core.c | 26 +++++- drivers/net/ethernet/intel/e1000e/netdev.c | 17 +++- drivers/net/ethernet/marvell/sky2.c | 2 +- drivers/net/ethernet/mellanox/mlx4/mcg.c | 15 +++- drivers/net/ethernet/mellanox/mlx4/qp.c | 19 +++++ .../net/ethernet/mellanox/mlx4/resource_tracker.c | 16 ++-- drivers/net/ethernet/mellanox/mlx5/core/main.c | 14 +--- .../net/ethernet/qlogic/netxen/netxen_nic_ctx.c | 2 +- drivers/net/ethernet/qlogic/qlcnic/qlcnic_hw.c | 2 +- drivers/net/ethernet/qlogic/qlge/qlge_dbg.c | 4 +- drivers/net/ethernet/qualcomm/qca_spi.c | 10 ++- drivers/net/ethernet/realtek/r8169.c | 4 +- drivers/net/ethernet/renesas/sh_eth.c | 2 +- drivers/net/ethernet/ti/cpsw.c | 16 ++++ drivers/net/hamradio/hdlcdrv.c | 2 + drivers/net/phy/phy.c | 6 ++ drivers/net/ppp/pptp.c | 1 - drivers/net/usb/cdc_ncm.c | 11 ++- drivers/net/virtio_net.c | 16 +++- drivers/net/vmxnet3/vmxnet3_drv.c | 5 ++ drivers/net/vrf.c | 8 +- drivers/net/vxlan.c | 2 +- drivers/net/wireless/ath/ath5k/debug.c | 5 +- drivers/net/wireless/ray_cs.c | 7 +- drivers/net/wireless/ti/wl1251/main.c | 3 +- drivers/powercap/powercap_sys.c | 1 + drivers/rtc/interface.c | 9 +- drivers/rtc/rtc-opal.c | 10 +++ drivers/rtc/rtc-snvs.c | 2 +- drivers/s390/block/dasd.c | 8 +- drivers/scsi/bnx2fc/bnx2fc.h | 1 + drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 10 ++- drivers/scsi/csiostor/csio_hw.c | 5 +- drivers/scsi/libiscsi.c | 24 +++++- drivers/scsi/libsas/sas_expander.c | 4 +- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 28 ++++--- drivers/staging/wlan-ng/prism2mgmt.c | 2 +- drivers/thermal/power_allocator.c | 2 + drivers/tty/n_gsm.c | 17 +++- drivers/tty/serial/8250/8250_omap.c | 4 + drivers/tty/serial/sccnxp.c | 15 ++-- drivers/tty/serial/sh-sci.c | 16 +++- drivers/usb/chipidea/core.c | 29 +++++-- drivers/usb/dwc3/dwc3-keystone.c | 4 + drivers/usb/storage/ene_ub6250.c | 11 ++- drivers/vhost/vhost.c | 3 +- drivers/video/fbdev/vfb.c | 17 ++++ fs/btrfs/extent_io.c | 2 +- fs/cifs/file.c | 2 +- fs/cifs/smb2pdu.c | 14 ++-- fs/ext4/file.c | 2 +- fs/ext4/mballoc.c | 23 +++-- fs/lockd/svc.c | 6 +- fs/nfs/flexfilelayout/flexfilelayout.c | 1 + fs/nfs/nfs4proc.c | 13 ++- fs/nfs/nfs4state.c | 10 ++- fs/overlayfs/inode.c | 12 ++- include/linux/compiler-clang.h | 5 ++ include/linux/mlx4/qp.h | 1 + include/linux/mlx5/device.h | 10 ++- include/linux/skbuff.h | 8 +- include/net/cfg80211.h | 2 +- include/net/x25.h | 4 +- kernel/events/core.c | 15 ++-- kernel/futex.c | 98 ++++++++++++++++++++-- kernel/pid.c | 4 +- kernel/sched/fair.c | 3 +- net/8021q/vlan_dev.c | 6 +- net/bluetooth/hci_core.c | 17 +++- net/ceph/osdmap.c | 1 + net/core/dev.c | 4 +- net/core/neighbour.c | 14 +++- net/core/net_namespace.c | 19 +++++ net/core/skbuff.c | 75 +++++++++++------ net/core/sysctl_net_core.c | 2 - net/ieee802154/socket.c | 8 +- net/ipv4/ah4.c | 8 +- net/ipv4/arp.c | 18 +++- net/ipv4/esp4.c | 13 +-- net/ipv4/ip_tunnel.c | 11 +-- net/ipv4/tcp_input.c | 24 +++--- net/ipv6/addrconf.c | 5 +- net/ipv6/ah6.c | 8 +- net/ipv6/esp6.c | 12 ++- net/ipv6/ip6_gre.c | 8 +- net/ipv6/ip6_output.c | 19 +++-- net/ipv6/ip6_tunnel.c | 11 ++- net/ipv6/ip6_vti.c | 7 +- net/ipv6/route.c | 3 + net/ipv6/sit.c | 9 +- net/key/af_key.c | 2 +- net/l2tp/l2tp_netlink.c | 2 + net/llc/af_llc.c | 3 + net/mac80211/mlme.c | 4 + net/netfilter/nf_conntrack_netlink.c | 7 +- net/netlink/af_netlink.c | 3 + net/rds/bind.c | 1 + net/rxrpc/rxkad.c | 21 +++-- net/sched/act_api.c | 4 +- net/sched/act_bpf.c | 12 ++- net/sctp/ipv6.c | 4 +- net/sctp/socket.c | 17 ++-- net/sunrpc/xprtsock.c | 7 +- net/x25/af_x25.c | 24 ++++-- net/x25/sysctl_net_x25.c | 5 +- net/xfrm/xfrm_state.c | 2 + scripts/tags.sh | 1 + security/selinux/hooks.c | 10 ++- sound/soc/intel/atom/sst/sst_stream.c | 2 +- sound/soc/intel/boards/cht_bsw_rt5645.c | 7 ++ sound/soc/sh/rcar/ssi.c | 11 ++- tools/perf/builtin-trace.c | 4 + tools/perf/tests/code-reading.c | 20 ++++- tools/perf/util/header.c | 12 ++- tools/perf/util/probe-event.c | 8 ++ tools/perf/util/unwind-libdw.c | 8 ++ tools/perf/util/util.c | 2 +- .../testing/selftests/powerpc/tm/tm-resched-dscr.c | 2 +- 181 files changed, 1416 insertions(+), 523 deletions(-)

6 years, 5 months

7
210
0 0

[PATCH] xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent

by Joe Jin

When run raidconfig from Dom0 we found that the Xen DMA heap is reduced, but Dom Heap is increased by the same size. Tracing raidconfig we found that the related ioctl() in megaraid_sas will call dma_alloc_coherent() to apply memory. If the memory allocated by Dom0 is not in the DMA area, it will exchange memory with Xen to meet the requiment. Later drivers call dma_free_coherent() to free the memory, on xen_swiotlb_free_coherent() the check condition (dev_addr + size - 1 <= dma_mask) is always false, it prevents calling xen_destroy_contiguous_region() to return the memory to the Xen DMA heap. This issue introduced by commit 6810df88dcfc2 "xen-swiotlb: When doing coherent alloc/dealloc check before swizzling the MFNs.". Signed-off-by: Joe Jin <joe.jin(a)oracle.com> Tested-by: John Sobecki <john.sobecki(a)oracle.com> Reviewed-by: Rzeszutek Wilk <konrad.wilk(a)oracle.com> Cc: stable(a)vger.kernel.org --- drivers/xen/swiotlb-xen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index e1c60899fdbc..a6f9ba85dc4b 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -351,7 +351,7 @@ xen_swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr, * physical address */ phys = xen_bus_to_phys(dev_addr); - if (((dev_addr + size - 1 > dma_mask)) || + if (((dev_addr + size - 1 <= dma_mask)) || range_straddles_page_boundary(phys, size)) xen_destroy_contiguous_region(phys, order); -- 2.14.3 (Apple Git-98)

6 years, 5 months

1
0
0 0

[PATCH UPSTREAM] xen-swiotlb: fix the check condition for xen_swiotlb_free_coherent

by Joe Jin

When run raidconfig from Dom0 we found that the Xen DMA heap is reduced, but Dom Heap is increased by the same size. Tracing raidconfig we found that the related ioctl() in megaraid_sas will call dma_alloc_coherent() to apply memory. If the memory allocated by Dom0 is not in the DMA area, it will exchange memory with Xen to meet the requiment. Later drivers call dma_free_coherent() to free the memory, on xen_swiotlb_free_coherent() the check condition (dev_addr + size - 1 <= dma_mask) is always false, it prevents calling xen_destroy_contiguous_region() to return the memory to the Xen DMA heap. This issue introduced by commit 6810df88dcfc2 "xen-swiotlb: When doing coherent alloc/dealloc check before swizzling the MFNs.". Signed-off-by: Joe Jin <joe.jin(a)oracle.com> Tested-by: John Sobecki <john.sobecki(a)oracle.com> Reviewed-by: Rzeszutek Wilk <konrad.wilk(a)oracle.com> Cc: stable(a)vger.kernel.org --- drivers/xen/swiotlb-xen.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index e1c60899fdbc..a6f9ba85dc4b 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -351,7 +351,7 @@ xen_swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr, * physical address */ phys = xen_bus_to_phys(dev_addr); - if (((dev_addr + size - 1 > dma_mask)) || + if (((dev_addr + size - 1 <= dma_mask)) || range_straddles_page_boundary(phys, size)) xen_destroy_contiguous_region(phys, order); -- 2.14.3 (Apple Git-98)

6 years, 5 months

2
2
0 0

Build failure in v4.4.y.queue

by Guenter Roeck

v4.4.y: drivers/net/ethernet/ti/cpsw.c: In function 'cpsw_add_dual_emac_def_ale_entries': drivers/net/ethernet/ti/cpsw.c:1112:23: error: 'cpsw' undeclared Guenter

6 years, 5 months

2
1
0 0

Re: [PATCH 2/2] nbd: don't start req until after the dead connection logic

by Bart Van Assche

On Thu, 2017-10-19 at 16:21 -0400, Josef Bacik wrote: > + blk_mq_start_request(req); > if (unlikely(nsock->pending && nsock->pending != req)) { > blk_mq_requeue_request(req, true); > ret = 0; (replying to an e-mail from seven months ago) Hello Josef, Are you aware that the nbd driver is one of the very few block drivers that calls blk_mq_requeue_request() after a request has been started? I think that can lead to the block layer core to undesired behavior, e.g. that the timeout handler fires concurrently with a request being reinstered. Can you or a colleague have a look at this? I would like to add the following code to the block layer core and I think that the nbd driver would trigger this warning: void blk_mq_requeue_request(struct request *rq, bool kick_requeue_list) { + WARN_ON_ONCE(old_state != MQ_RQ_COMPLETE); + __blk_mq_requeue_request(rq); Thanks, Bart.

6 years, 5 months

2
2
0 0

[PATCH 07/25] zfcp: fix missing REC trigger trace on enqueue without ERP thread

by Steffen Maier

Example trace record formatted with zfcpdbf from s390-tools: Timestamp : ... Area : REC Subarea : 00 Level : 1 Exception : - CPU ID : .. Caller : 0x... Record ID : 1 ZFCP_DBF_REC_TRIG Tag : ....... LUN : 0x... WWPN : 0x... D_ID : 0x... Adapter status : 0x... Port status : 0x... LUN status : 0x... Ready count : 0x... Running count : 0x... ERP want : 0x0. ZFCP_ERP_ACTION_REOPEN_... ERP need : 0xc0 ZFCP_ERP_ACTION_NONE Signed-off-by: Steffen Maier <maier(a)linux.ibm.com> Cc: <stable(a)vger.kernel.org> #2.6.38+ Reviewed-by: Benjamin Block <bblock(a)linux.ibm.com> --- drivers/s390/scsi/zfcp_erp.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 20fe59300d0e..69dfb328dba4 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -315,8 +315,11 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, goto out; } - if (!adapter->erp_thread) - return -EIO; + if (!adapter->erp_thread) { + need = ZFCP_ERP_ACTION_NONE; /* marker for trace */ + retval = -EIO; + goto out; + } need = zfcp_erp_required_act(want, adapter, port, sdev); if (!need) -- 2.16.3

6 years, 5 months

1
0
0 0

[PATCH 06/25] zfcp: fix missing REC trigger trace for all objects in ERP_FAILED

by Steffen Maier

That other commit introduced an inconsistency because it would trace on ERP_FAILED for all callers of port forced reopen triggers (not just terminate_rport_io), but it would not trace on ERP_FAILED for all callers of other ERP triggers such as adapter, port regular, LUN. Therefore, generalize that other commit. zfcp_erp_action_enqueue() already had two early outs which re-used the one zfcp_dbf_rec_trig() call. All ERP trigger functions finally run through zfcp_erp_action_enqueue(). So move the special handling for ZFCP_STATUS_COMMON_ERP_FAILED into zfcp_erp_action_enqueue() and add another early out with new trace marker for pseudo ERP need in this case. This removes all early returns from all ERP trigger functions so we always end up at zfcp_dbf_rec_trig(). Example trace record formatted with zfcpdbf from s390-tools: Timestamp : ... Area : REC Subarea : 00 Level : 1 Exception : - CPU ID : .. Caller : 0x... Record ID : 1 ZFCP_DBF_REC_TRIG Tag : ....... LUN : 0x... WWPN : 0x... D_ID : 0x... Adapter status : 0x... Port status : 0x... LUN status : 0x... Ready count : 0x... Running count : 0x... ERP want : 0x0. ZFCP_ERP_ACTION_REOPEN_... ERP need : 0xe0 ZFCP_ERP_ACTION_FAILED Signed-off-by: Steffen Maier <maier(a)linux.ibm.com> Cc: <stable(a)vger.kernel.org> #2.6.38+ Reviewed-by: Benjamin Block <bblock(a)linux.ibm.com> --- drivers/s390/scsi/zfcp_erp.c | 79 ++++++++++++++++++++++++++++---------------- 1 file changed, 51 insertions(+), 28 deletions(-) diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 5c368cdfc455..20fe59300d0e 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -143,6 +143,49 @@ static void zfcp_erp_action_dismiss_adapter(struct zfcp_adapter *adapter) } } +static int zfcp_erp_handle_failed(int want, struct zfcp_adapter *adapter, + struct zfcp_port *port, + struct scsi_device *sdev) +{ + int need = want; + struct zfcp_scsi_dev *zsdev; + + switch (want) { + case ZFCP_ERP_ACTION_REOPEN_LUN: + zsdev = sdev_to_zfcp(sdev); + if (atomic_read(&zsdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED) + need = 0; + break; + case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: + if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) + need = 0; + break; + case ZFCP_ERP_ACTION_REOPEN_PORT: + if (atomic_read(&port->status) & + ZFCP_STATUS_COMMON_ERP_FAILED) { + need = 0; + /* ensure propagation of failed status to new devices */ + zfcp_erp_set_port_status( + port, ZFCP_STATUS_COMMON_ERP_FAILED); + } + break; + case ZFCP_ERP_ACTION_REOPEN_ADAPTER: + if (atomic_read(&adapter->status) & + ZFCP_STATUS_COMMON_ERP_FAILED) { + need = 0; + /* ensure propagation of failed status to new devices */ + zfcp_erp_set_adapter_status( + adapter, ZFCP_STATUS_COMMON_ERP_FAILED); + } + break; + default: + need = 0; + break; + } + + return need; +} + static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter, struct zfcp_port *port, struct scsi_device *sdev) @@ -266,6 +309,12 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, int retval = 1, need; struct zfcp_erp_action *act; + need = zfcp_erp_handle_failed(want, adapter, port, sdev); + if (!need) { + need = ZFCP_ERP_ACTION_FAILED; /* marker for trace */ + goto out; + } + if (!adapter->erp_thread) return -EIO; @@ -314,12 +363,6 @@ static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, zfcp_erp_adapter_block(adapter, clear_mask); zfcp_scsi_schedule_rports_block(adapter); - /* ensure propagation of failed status to new devices */ - if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) { - zfcp_erp_set_adapter_status(adapter, - ZFCP_STATUS_COMMON_ERP_FAILED); - return -EIO; - } return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER, adapter, NULL, NULL, id, 0); } @@ -338,12 +381,8 @@ void zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear, char *id) zfcp_scsi_schedule_rports_block(adapter); write_lock_irqsave(&adapter->erp_lock, flags); - if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) - zfcp_erp_set_adapter_status(adapter, - ZFCP_STATUS_COMMON_ERP_FAILED); - else - zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER, adapter, - NULL, NULL, id, 0); + zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_ADAPTER, adapter, + NULL, NULL, id, 0); write_unlock_irqrestore(&adapter->erp_lock, flags); } @@ -384,13 +423,6 @@ static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, zfcp_erp_port_block(port, clear); zfcp_scsi_schedule_rport_block(port); - if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) { - zfcp_dbf_rec_trig(id, port->adapter, port, NULL, - ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, - ZFCP_ERP_ACTION_FAILED); - return; - } - zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, port->adapter, port, NULL, id, 0); } @@ -416,12 +448,6 @@ static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id) zfcp_erp_port_block(port, clear); zfcp_scsi_schedule_rport_block(port); - if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) { - /* ensure propagation of failed status to new devices */ - zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED); - return -EIO; - } - return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT, port->adapter, port, NULL, id, 0); } @@ -461,9 +487,6 @@ static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id, zfcp_erp_lun_block(sdev, clear); - if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED) - return; - zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_LUN, adapter, zfcp_sdev->port, sdev, id, act_status); } -- 2.16.3

6 years, 5 months

1
0
0 0

[PATCH 05/25] zfcp: fix missing REC trigger trace on terminate_rport_io for ERP_FAILED

by Steffen Maier

For problem determination we always want to see when we were invoked on the terminate_rport_io callback whether we perform something or not. Temporal event sequence of interest with a long fast_io_fail_tmo of 27 sec: loose remote port t workqueue [s] zfcp_q_<dev> IRQ zfcperp<dev> === ================== =================== ============================ 0 recv RSCN q p.test_link_work block rport start fast_io_fail_tmo send ADISC ELS 4 recv ADISC fail block zfcp_port port forced reopen send open port 12 recv open port fail q p.gid_pn_work zfcp_erp_wakeup (zfcp_erp_wait would return) GID_PN fail Before this point, we got a SCSI trace with tag "sctrpi1" on fast_io_fail, e.g. with the typical 5 sec setting. port.status |= ERP_FAILED If fast_io_fail_tmo triggers after this point, we missed a SCSI trace. workqueue fc_dl_<host> ================== 27 fc_timeout_fail_rport_io fc_terminate_rport_io zfcp_scsi_terminate_rport_io zfcp_erp_port_forced_reopen _zfcp_erp_port_forced_reopen if (port.status & ERP_FAILED) return; Therefore, write a trace before above early return. Example trace record formatted with zfcpdbf from s390-tools: Timestamp : ... Area : REC Subarea : 00 Level : 1 Exception : - CPU ID : .. Caller : 0x... Record ID : 1 ZFCP_DBF_REC_TRIG Tag : sctrpi1 SCSI terminate rport I/O LUN : 0xffffffffffffffff none (invalid) WWPN : 0x<wwpn> D_ID : 0x<n_port_id> Adapter status : 0x... Port status : 0x... LUN status : 0x00000000 none (invalid) Ready count : 0x... Running count : 0x... ERP want : 0x03 ZFCP_ERP_ACTION_REOPEN_PORT_FORCED ERP need : 0xe0 ZFCP_ERP_ACTION_FAILED Signed-off-by: Steffen Maier <maier(a)linux.ibm.com> Cc: <stable(a)vger.kernel.org> #2.6.38+ Reviewed-by: Benjamin Block <bblock(a)linux.ibm.com> --- drivers/s390/scsi/zfcp_erp.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index 3489b1bc9121..5c368cdfc455 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -42,9 +42,13 @@ enum zfcp_erp_steps { * @ZFCP_ERP_ACTION_REOPEN_PORT_FORCED: Forced port recovery. * @ZFCP_ERP_ACTION_REOPEN_ADAPTER: Adapter recovery. * @ZFCP_ERP_ACTION_NONE: Eyecatcher pseudo flag to bitwise or-combine with - * either of the other enum values. + * either of the first four enum values. * Used to indicate that an ERP action could not be * set up despite a detected need for some recovery. + * @ZFCP_ERP_ACTION_FAILED: Eyecatcher pseudo flag to bitwise or-combine with + * either of the first four enum values. + * Used to indicate that ERP not needed because + * the object has ZFCP_STATUS_COMMON_ERP_FAILED. */ enum zfcp_erp_act_type { ZFCP_ERP_ACTION_REOPEN_LUN = 1, @@ -52,6 +56,7 @@ enum zfcp_erp_act_type { ZFCP_ERP_ACTION_REOPEN_PORT_FORCED = 3, ZFCP_ERP_ACTION_REOPEN_ADAPTER = 4, ZFCP_ERP_ACTION_NONE = 0xc0, + ZFCP_ERP_ACTION_FAILED = 0xe0, }; enum zfcp_erp_act_state { @@ -379,8 +384,12 @@ static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port, int clear, zfcp_erp_port_block(port, clear); zfcp_scsi_schedule_rport_block(port); - if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) + if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) { + zfcp_dbf_rec_trig(id, port->adapter, port, NULL, + ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, + ZFCP_ERP_ACTION_FAILED); return; + } zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, port->adapter, port, NULL, id, 0); -- 2.16.3

6 years, 5 months

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[PATCH 04/25] zfcp: fix missing REC trigger trace on terminate_rport_io early return

by Steffen Maier

get_device() and its internally used kobject_get() only return NULL if they get passed NULL as argument. zfcp_get_port_by_wwpn() loops over adapter->port_list so the iteration variable port is always non-NULL. Struct device is embedded in struct zfcp_port so &port->dev is always non-NULL. This is the argument to get_device(). However, if we get an fc_rport in terminate_rport_io() for which we cannot find a match within zfcp_get_port_by_wwpn(), the latter can return NULL. v2.6.30 commit 70932935b61e ("[SCSI] zfcp: Fix oops when port disappears") introduced an early return without adding a trace record for this case. Even if we don't need recovery in this case, for debugging we should still see that our callback was invoked originally by scsi_transport_fc. Example trace record formatted with zfcpdbf from s390-tools: Timestamp : ... Area : REC Subarea : 00 Level : 1 Exception : - CPU ID : .. Caller : 0x... Record ID : 1 Tag : sctrpin SCSI terminate rport I/O, no zfcp port LUN : 0xffffffffffffffff none (invalid) WWPN : 0x<wwpn> WWPN D_ID : 0x<n_port_id> N_Port-ID Adapter status : 0x... Port status : 0xffffffff unknown (-1) LUN status : 0x00000000 none (invalid) Ready count : 0x... Running count : 0x... ERP want : 0x03 ZFCP_ERP_ACTION_REOPEN_PORT_FORCED ERP need : 0xc0 ZFCP_ERP_ACTION_NONE Signed-off-by: Steffen Maier <maier(a)linux.ibm.com> Fixes: 70932935b61e ("[SCSI] zfcp: Fix oops when port disappears") Cc: <stable(a)vger.kernel.org> #2.6.38+ Reviewed-by: Benjamin Block <bblock(a)linux.ibm.com> --- drivers/s390/scsi/zfcp_erp.c | 20 ++++++++++++++++++++ drivers/s390/scsi/zfcp_ext.h | 3 +++ drivers/s390/scsi/zfcp_scsi.c | 5 +++++ 3 files changed, 28 insertions(+) diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c index d9cd25b56cfa..3489b1bc9121 100644 --- a/drivers/s390/scsi/zfcp_erp.c +++ b/drivers/s390/scsi/zfcp_erp.c @@ -283,6 +283,26 @@ static int zfcp_erp_action_enqueue(int want, struct zfcp_adapter *adapter, return retval; } +void zfcp_erp_port_forced_no_port_dbf(char *id, struct zfcp_adapter *adapter, + u64 port_name, u32 port_id) +{ + unsigned long flags; + static /* don't waste stack */ struct zfcp_port tmpport; + + write_lock_irqsave(&adapter->erp_lock, flags); + /* Stand-in zfcp port with fields just good enough for + * zfcp_dbf_rec_trig() and zfcp_dbf_set_common(). + * Under lock because tmpport is static. + */ + atomic_set(&tmpport.status, -1); /* unknown */ + tmpport.wwpn = port_name; + tmpport.d_id = port_id; + zfcp_dbf_rec_trig(id, adapter, &tmpport, NULL, + ZFCP_ERP_ACTION_REOPEN_PORT_FORCED, + ZFCP_ERP_ACTION_NONE); + write_unlock_irqrestore(&adapter->erp_lock, flags); +} + static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter, int clear_mask, char *id) { diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h index e55f42ce1168..3299bd345076 100644 --- a/drivers/s390/scsi/zfcp_ext.h +++ b/drivers/s390/scsi/zfcp_ext.h @@ -55,6 +55,9 @@ extern void zfcp_dbf_scsi_eh(char *tag, struct zfcp_adapter *adapter, /* zfcp_erp.c */ extern void zfcp_erp_set_adapter_status(struct zfcp_adapter *, u32); extern void zfcp_erp_clear_adapter_status(struct zfcp_adapter *, u32); +extern void zfcp_erp_port_forced_no_port_dbf(char *id, + struct zfcp_adapter *adapter, + u64 port_name, u32 port_id); extern void zfcp_erp_adapter_reopen(struct zfcp_adapter *, int, char *); extern void zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int, char *); extern void zfcp_erp_set_port_status(struct zfcp_port *, u32); diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c index 4fdb1665b0e6..478e7ef9ea2f 100644 --- a/drivers/s390/scsi/zfcp_scsi.c +++ b/drivers/s390/scsi/zfcp_scsi.c @@ -605,6 +605,11 @@ static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport) if (port) { zfcp_erp_port_forced_reopen(port, 0, "sctrpi1"); put_device(&port->dev); + } else { + zfcp_erp_port_forced_no_port_dbf( + "sctrpin", adapter, + rport->port_name /* zfcp_scsi_rport_register */, + rport->port_id /* zfcp_scsi_rport_register */); } } -- 2.16.3

6 years, 5 months

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Linux-stable-mirror May 2018