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Message-ID: <cfc04422-51bd-0a28-6a8c-6b57179e8af2@itcare.pl> Date: Wed, 20 Sep 2017 14:23:46 +0200 From: Paweł Staszewski <pstaszewski@...are.pl> To: Eric Dumazet <eric.dumazet@...il.com> Cc: Linux Kernel Network Developers <netdev@...r.kernel.org> Subject: Re: Latest net-next from GIT panic Almost there Bisecting: 6 revisions left to test after this (roughly 3 steps) [ad65a2f05695aced349e308193c6e2a6b1d87112] ipv6: call dst_hold_safe() properly W dniu 2017-09-20 o 13:02, Paweł Staszewski pisze: > Ok resumed and soo far: > > Panic: > > # bad: [9cc9a5cb176ccb4f2cda5ac34da5a659926f125f] datapath: Avoid > using stack larger than 1024. > git bisect bad 9cc9a5cb176ccb4f2cda5ac34da5a659926f125f > > No panic: > > # good: [073cf9e20c333ab29744717a23f9e43ec7512a20] Merge branch > 'udp-reduce-cache-pressure' > git bisect good 073cf9e20c333ab29744717a23f9e43ec7512a20 > > > W dniu 2017-09-20 o 12:22, Paweł Staszewski pisze: >> Soo far bisected and marked: >> >> git bisect start >> # bad: [07dd6cc1fff160143e82cf5df78c1db0b6e03355] Linux 4.13.2 >> git bisect bad 07dd6cc1fff160143e82cf5df78c1db0b6e03355 >> # good: [5d7d2e03e0f01a992e3521b180c3d3e67905f269] Linux 4.12.13 >> git bisect good 5d7d2e03e0f01a992e3521b180c3d3e67905f269 >> # good: [6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c] Linux 4.12 >> git bisect good 6f7da290413ba713f0cdd9ff1a2a9bb129ef4f6c >> # bad: [ac7b75966c9c86426b55fe1c50ae148aa4571075] Merge tag >> 'pinctrl-v4.13-1' of >> git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl >> git bisect bad ac7b75966c9c86426b55fe1c50ae148aa4571075 >> # good: [e24dd9ee5399747b71c1d982a484fc7601795f31] Merge branch >> 'next' of >> git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security >> git bisect good e24dd9ee5399747b71c1d982a484fc7601795f31 >> # good: [e24dd9ee5399747b71c1d982a484fc7601795f31] Merge branch >> 'next' of >> git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security >> git bisect good e24dd9ee5399747b71c1d982a484fc7601795f31 >> # good: [e24dd9ee5399747b71c1d982a484fc7601795f31] Merge branch >> 'next' of >> git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security >> git bisect good e24dd9ee5399747b71c1d982a484fc7601795f31 >> >> >> >> W dniu 2017-09-20 o 12:21, Paweł Staszewski pisze: >>> Ok kernel crashed with different panic that i didnt catch when i was >>> doing bisect and now my bisection is broken :) >>> >>> git bisect good >>> Bisecting: 1787 revisions left to test after this (roughly 11 steps) >>> error: Your local changes to the following files would be >>> overwritten by checkout: >>> Documentation/00-INDEX >>> Documentation/ABI/stable/sysfs-class-udc >>> Documentation/ABI/testing/configfs-usb-gadget-uac1 >>> Documentation/ABI/testing/ima_policy >>> Documentation/ABI/testing/sysfs-bus-iio >>> Documentation/ABI/testing/sysfs-bus-iio-meas-spec >>> Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 >>> Documentation/ABI/testing/sysfs-class-net >>> Documentation/ABI/testing/sysfs-class-power-twl4030 >>> Documentation/ABI/testing/sysfs-class-typec >>> Documentation/DMA-API.txt >>> Documentation/IRQ-domain.txt >>> Documentation/Makefile >>> Documentation/PCI/MSI-HOWTO.txt >>> Documentation/RCU/00-INDEX >>> Documentation/RCU/Design/Requirements/Requirements.html >>> Documentation/RCU/checklist.txt >>> Documentation/admin-guide/README.rst >>> Documentation/admin-guide/devices.txt >>> Documentation/admin-guide/index.rst >>> Documentation/admin-guide/kernel-parameters.txt >>> Documentation/admin-guide/pm/cpufreq.rst >>> Documentation/admin-guide/pm/intel_pstate.rst >>> Documentation/admin-guide/ras.rst >>> Documentation/arm/Atmel/README >>> Documentation/block/biodoc.txt >>> Documentation/conf.py >>> Documentation/core-api/assoc_array.rst >>> Documentation/core-api/atomic_ops.rst >>> Documentation/core-api/index.rst >>> Documentation/crypto/asymmetric-keys.txt >>> Documentation/dev-tools/index.rst >>> Documentation/dev-tools/sparse.rst >>> Documentation/devicetree/bindings/arm/amlogic.txt >>> Documentation/devicetree/bindings/arm/atmel-at91.txt >>> Documentation/devicetree/bindings/arm/ccn.txt >>> Documentation/devicetree/bindings/arm/cpus.txt >>> Documentation/devicetree/bindings/arm/gemini.txt >>> Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt >>> Documentation/devicetree/bindings/arm/keystone/keystone.txt >>> Documentation/devicetree/bindings/arm/mediatek.txt >>> Documentation/devicetree/bindings/arm/rockchip.txt >>> Documentation/devicetree/bindings/arm/shmobile.txt >>> Documentation/devicetree/bindings/arm/tegra.txt >>> Documentation/devicetree/bindings/ata/ahci-fsl-qoriq.txt >>> Documentation/devicetree/bindings/bus/brcm,gisb-arb.txt >>> Documentation/devicetree/bindings/clock/brcm,iproc-clocks.txt >>> Documentation/devicetree/bindings/cpufreq/ti-cpufreq.txt >>> Documentation/devicetree/bindings/gpio/gpio_atmel.txt >>> Documentation/devicetree/bindings/iio/adc/amlogic,meson-saradc.txt >>> Documentation/devicetree/bindings/iio/adc/renesas,gyroadc.txt >>> Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt >>> Documentation/devicetree/bindings/iio/imu/st_lsm6dsx.txt >>> Documentation/devicetree/bindings/interrupt-controller/allwinner,sunxi-nmi.txt >>> >>> Documentation/devicetree/bindings/interrupt-controller/aspeed,ast2400-vic.txt >>> >>> Documentation/devicetree/bindings/interrupt-controller/mediatek,sysirq.txt >>> >>> Documentation/devicetree/bindings/leds/common.txt >>> Documentation/devicetree/bindings/mfd/hi6421.txt >>> Documentation/devicetree/bindings/mfd/tps65910.txt >>> Documentation/devicetree/bindings/mmc/fsl-esdhc.txt >>> Documentation/devicetree/bindings/mmc/k3-dw-mshc.txt >>> Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt >>> Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt >>> Documentation/devicetree/bindings/mtd/atmel-nand.txt >>> Documentation/devicetree/bindings/net/dsa/b53.txt >>> Documentation/devicetree/bindings/net/ethernet.txt >>> Documentation/devicetree/bindings/net/macb.txt >>> Documentation/devicetree/bindings/net/marvell-orion-mdio.txt >>> Documentation/devicetree/bindings/net/ti,wilink-st.txt >>> Documentation/devicetree/bindings/net/wireless/ti,wlcore.txt >>> Documentation/devicetree/bindings/nvmem/rockchip-efuse.txt >>> Documentation/devicetree/bindings/opp/opp.txt >>> Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.txt >>> Documentation/devicetree/bindings/phy/brcm-sata-phy.txt >>> Documentation/devicetree/bindings/phy/meson8b-usb2-phy.txt >>> Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt >>> Documentation/devicetree/bindings/power/rockchip-io-domain.txt >>> Documentation/devicetree/bindings/power/supply/bq27xxx.txt >>> Documentation/devicetree/bindings/property-units.txt >>> Documentation/devicetree/bindings/regulator/regulator.txt >>> Documentation/devicetree/bindings/serial/8 >>> error: The following untracked working tree files would be >>> overwritten by checkout: >>> Documentation/ABI/testing/sysfs-class-net-phydev >>> Documentation/DocBook/.gitignore >>> Documentation/DocBook/Makefile >>> Documentation/DocBook/filesystems.tmpl >>> Documentation/DocBook/kernel-hacking.tmpl >>> Documentation/DocBook/kernel-locking.tmpl >>> Documentation/DocBook/kgdb.tmpl >>> Documentation/DocBook/libata.tmpl >>> Documentation/DocBook/librs.tmpl >>> Documentation/DocBook/lsm.tmpl >>> Documentation/DocBook/mtdnand.tmpl >>> Documentation/DocBook/networking.tmpl >>> Documentation/DocBook/rapidio.tmpl >>> Documentation/DocBook/s390-drivers.tmpl >>> Documentation/DocBook/scsi.tmpl >>> Documentation/DocBook/sh.tmpl >>> Documentation/DocBook/stylesheet.xsl >>> Documentation/DocBook/w1.tmpl >>> Documentation/DocBook/z8530book.tmpl >>> Documentation/Makefile.sphinx >>> Documentation/RCU/trace.txt >>> Documentation/devicetree/bindings/i2c/i2c-mt6577.txt >>> Documentation/devicetree/bindings/misc/allwinner,syscon.txt >>> Documentation/devicetree/bindings/net/cortina.txt >>> Documentation/devicetree/bindings/net/dsa/ksz.txt >>> Documentation/devicetree/bindings/net/dwmac-sun8i.txt >>> Documentation/devicetree/bindings/net/qca,qca7000.txt >>> Documentation/devicetree/bindings/power/max8903-charger.txt >>> Documentation/devicetree/bindings/power_supply/maxim,max14656.txt >>> Documentation/devicetree/bindings/ptp/brcm,ptp-dte.txt >>> Documentation/devicetree/bindings/timer/moxa,moxart-timer.txt >>> Documentation/doc-guide/docbook.rst >>> Documentation/networking/tls.txt >>> Documentation/prctl/no_new_privs.txt >>> Documentation/prctl/seccomp_filter.txt >>> Documentation/security/00-INDEX >>> Documentation/security/IMA-templates.txt >>> Documentation/security/LSM.txt >>> Documentation/security/LoadPin.txt >>> Documentation/security/SELinux.txt >>> Documentation/security/Smack.txt >>> Documentation/security/Yama.txt >>> Documentation/security/apparmor.txt >>> Documentation/security/conf.py >>> Documentation/security/credentials.txt >>> Documentation/security/keys-ecryptfs.txt >>> Documentation/security/keys-request-key.txt >>> Documentation/security/keys-trusted-encrypted.txt >>> Documentation/security/keys.txt >>> Documentation/security/self-protection.txt >>> Documentation/security/tomoyo.txt >>> Documentation/sphinx/convert_template.sed >>> Documentation/sphinx/post_convert.sed >>> Documentation/sphinx/tmplcvt >>> Documentation/usb/typec.rst >>> Documentation/usb/usb3-debug-port.rst >>> arch/arm/boot/dts/rk1108-evb.dts >>> arch/arm/boot/dts/rk1108.dtsi >>> arch/arm/boot/dts/tegra20-whistler.dts >>> arch/arm/mach-omap2/opp.c >>> arch/arm/mach-omap2/pmu.c >>> arch/ia64/include/asm/siginfo.h >>> arch/m32r/include/uapi/asm/siginfo.h >>> arch/microblaze/include/asm/bitops.h >>> arch/microblaze/include/asm/bug.h >>> arch/microblaze/include/asm/bugs.h >>> arch/microblaze/include/asm/div64.h >>> arch/microblaze/include/asm/emergency-restart.h >>> arch/microblaze/include/asm/fb.h >>> arch/microblaze/include/asm/hardirq.h >>> arch/microblaze/include/asm/irq_regs.h >>> arch/microblaze/include/asm/kdebug.h >>> arch/microblaze/include/asm/kmap_types.h >>> arch/microblaze/include/asm/linkage.h >>> arch/microblaze/include/asm/local.h >>> arch/microblaze/include/asm/local64.h >>> arch/microblaze/include/asm/parport.h >>> arch/microblaze/include/asm/percpu.h >>> arch/microblaze/include/asm/serial.h >>> arch/microblaze/include/asm/shmparam.h >>> arch/microblaze/include/asm/topology.h >>> arch/microblaze/include/asm/ucontext.h >>> arch/microblaze/include/asm/vga.h >>> arch/microblaze/include/asm/xor.h >>> arch/microblaze/include/uapi/asm/bitsperlong.h >>> arch/microblaze/include/uapi/asm/errno.h >>> arch/microblaze/include/uapi/asm/fcntl.h >>> arch/microblaze/include/uapi/asm/ioctl.h >>> arch/microblaze/include/uapi/asm/ioctls.h >>> arch/microblaze/include/uapi/asm/ipcbuf.h >>> arch/microblaze/include/uapi/asm/kvm_para.h >>> arch/microblaze/include/uapi/asm/mman.h >>> arch/microblaze/include/uapi/asm/msgbuf.h >>> arch/microblaze/include/uapi/asm/param.h >>> arch/microblaze/include/uapi/asm/poll.h >>> arch/microblaze/include/uapi/asm/resource.h >>> arch/microblaze/include/uapi/asm/sembuf.h >>> arch/microblaze/include/uapi/asm/shmbuf.h >>> arch/microblaze/include/uapi/asm/siginfo.h >>> arch/microblaze/include/uapi/asm/signal.h >>> arch/microblaze/includ >>> Aborting >>> >>> >>> >>> W dniu 2017-09-20 o 11:45, Paweł Staszewski pisze: >>>> Ok looks like ending bisection >>>> >>>> >>>> Latest bisected kernel when there is no kernel panic 4.12.0+ (from >>>> next) - but only this warning: >>>> >>>> [ 309.030019] NETDEV WATCHDOG: enp4s0f0 (ixgbe): transmit queue 0 >>>> timed out >>>> [ 309.030034] ------------[ cut here ]------------ >>>> [ 309.030040] WARNING: CPU: 35 PID: 0 at dev_watchdog+0xcf/0x139 >>>> [ 309.030041] Modules linked in: bonding ipmi_si x86_pkg_temp_thermal >>>> [ 309.030045] CPU: 35 PID: 0 Comm: swapper/35 Not tainted 4.12.0+ #5 >>>> [ 309.030046] task: ffff88086d98a000 task.stack: ffffc90003378000 >>>> [ 309.030048] RIP: 0010:dev_watchdog+0xcf/0x139 >>>> [ 309.030049] RSP: 0018:ffff88087fbc3ea8 EFLAGS: 00010246 >>>> [ 309.030050] RAX: 000000000000003d RBX: ffff88046b680000 RCX: >>>> 0000000000000000 >>>> [ 309.030050] RDX: ffff88087fbd2f01 RSI: 0000000000000000 RDI: >>>> ffff88087fbcda08 >>>> [ 309.030051] RBP: ffff88087fbc3eb8 R08: 0000000000000000 R09: >>>> ffff88087ff80a04 >>>> [ 309.030051] R10: 0000000000000000 R11: ffff88086d98a001 R12: >>>> 0000000000000000 >>>> [ 309.030052] R13: ffff88087fbc3ef8 R14: ffff88086d98a000 R15: >>>> ffffffff81c06008 >>>> [ 309.030053] FS: 0000000000000000(0000) >>>> GS:ffff88087fbc0000(0000) knlGS:0000000000000000 >>>> [ 309.030054] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >>>> [ 309.030054] CR2: 00007fba600f6098 CR3: 000000086b955000 CR4: >>>> 00000000001406e0 >>>> [ 309.030055] Call Trace: >>>> [ 309.030057] <IRQ> >>>> [ 309.030059] ? netif_tx_lock+0x79/0x79 >>>> [ 309.030062] call_timer_fn.isra.24+0x17/0x77 >>>> [ 309.030063] run_timer_softirq+0x118/0x161 >>>> [ 309.030065] ? netif_tx_lock+0x79/0x79 >>>> [ 309.030066] ? ktime_get+0x2b/0x42 >>>> [ 309.030070] ? lapic_next_deadline+0x21/0x27 >>>> [ 309.030073] ? clockevents_program_event+0xa8/0xc5 >>>> [ 309.030076] __do_softirq+0xa8/0x19d >>>> [ 309.030078] irq_exit+0x5d/0x6b >>>> [ 309.030079] smp_apic_timer_interrupt+0x2a/0x36 >>>> [ 309.030082] apic_timer_interrupt+0x89/0x90 >>>> [ 309.030085] RIP: 0010:mwait_idle+0x4e/0x6a >>>> [ 309.030086] RSP: 0018:ffffc9000337be98 EFLAGS: 00000246 >>>> ORIG_RAX: ffffffffffffff10 >>>> [ 309.030087] RAX: 0000000000000000 RBX: 0000000000000000 RCX: >>>> 0000000000000000 >>>> [ 309.030087] RDX: 0000000000000000 RSI: 0000000000000000 RDI: >>>> ffff88086d98a000 >>>> [ 309.030088] RBP: ffffc9000337be98 R08: ffff88046f8279a0 R09: >>>> ffff88046f827040 >>>> [ 309.030089] R10: ffff88086d98a000 R11: ffff88086d98a000 R12: >>>> 0000000000000000 >>>> [ 309.030089] R13: ffff88086d98a000 R14: ffff88086d98a000 R15: >>>> ffff88086d98a000 >>>> [ 309.030090] </IRQ> >>>> [ 309.030094] arch_cpu_idle+0xa/0xc >>>> [ 309.030095] default_idle_call+0x19/0x1b >>>> [ 309.030102] do_idle+0xbc/0x196 >>>> [ 309.030104] cpu_startup_entry+0x1d/0x20 >>>> [ 309.030105] start_secondary+0xd8/0xdc >>>> [ 309.030108] secondary_startup_64+0x9f/0x9f >>>> [ 309.030109] Code: cc 75 bd eb 35 48 89 df c6 05 c3 dc 74 00 01 >>>> e8 3a 62 fe ff 44 89 e1 48 89 de 48 89 c2 48 c7 c7 0f 65 a4 81 31 >>>> c0 e8 3d 4c b5 ff <0f> ff 48 8b 83 e0 01 00 00 48 89 df ff 50 78 48 >>>> 8b 05 a0 bc 6a >>>> [ 309.030128] ---[ end trace 9102cb25703ae2d9 ]--- >>>> >>>> >>>> I just marked it as good - cause this problem above is differend - >>>> and im going to: >>>> >>>> git bisect good >>>> Bisecting: 1787 revisions left to test after this (roughly 11 steps) >>>> >>>> >>>> >>>> >>>> W dniu 2017-09-20 o 10:44, Paweł Staszewski pisze: >>>>> Trying to make video from ipmi :) >>>>> >>>>> with that results: >>>>> >>>>> https://bugzilla.kernel.org/attachment.cgi?id=258521 >>>>> >>>>> catched two more lines where it starts - panic from 4.13.2. >>>>> >>>>> >>>>> Now will try tro do some bisection >>>>> >>>>> >>>>> >>>>> W dniu 2017-09-20 o 09:58, Paweł Staszewski pisze: >>>>>> Hi >>>>>> >>>>>> >>>>>> Will try bisecting tonight >>>>>> >>>>>> >>>>>> >>>>>> W dniu 2017-09-20 o 05:24, Eric Dumazet pisze: >>>>>>> On Wed, 2017-09-20 at 02:06 +0200, Paweł Staszewski wrote: >>>>>>>> Just checked kernel 4.13.2 and same problem >>>>>>>> >>>>>>>> Just after start all 6 bgp sessions - and kernel starts to >>>>>>>> learn routes >>>>>>>> it panic. >>>>>>>> >>>>>>>> https://bugzilla.kernel.org/attachment.cgi?id=258509 >>>>>>>> >>>>>>> >>>>>>> Unfortunately we have not enough information from these traces. >>>>>>> >>>>>>> Can you get a full stack trace ? >>>>>>> >>>>>>> Alternatively, can you bisect ? >>>>>>> >>>>>>> Thanks. >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>> >>>>> >>>> >>>> >>> >>> >> >> > >
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