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[209.132.180.67]) by mx.google.com with ESMTP id m15-v6si2118847pls.439.2018.07.05.01.23.53; Thu, 05 Jul 2018 01:24:09 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753375AbeGEIWQ (ORCPT + 99 others); Thu, 5 Jul 2018 04:22:16 -0400 Received: from ec2-18-194-220-216.eu-central-1.compute.amazonaws.com ([18.194.220.216]:47072 "EHLO sysam.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752965AbeGEIWO (ORCPT ); Thu, 5 Jul 2018 04:22:14 -0400 X-Greylist: delayed 557 seconds by postgrey-1.27 at vger.kernel.org; Thu, 05 Jul 2018 04:22:14 EDT Received: from localhost (localhost [127.0.0.1]) by sysam.it (Postfix) with ESMTP id 69E8F21B22; Thu, 5 Jul 2018 08:12:56 +0000 (UTC) Received: from sysam.it ([127.0.0.1]) by localhost (sysam.it [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hl472FaIUozI; Thu, 5 Jul 2018 08:12:55 +0000 (UTC) Received: from jerusalem (host51-24-dynamic.54-79-r.retail.telecomitalia.it [79.54.24.51]) by sysam.it (Postfix) with ESMTPSA id 7D82621B21; Thu, 5 Jul 2018 08:12:54 +0000 (UTC) Date: Thu, 5 Jul 2018 10:12:53 +0200 From: Angelo Dureghello To: Vinod Cc: dmaengine@vger.kernel.org, Krzysztof Kozlowski , Dan Williams , linux-kernel@vger.kernel.org, Stefan Agner Subject: Re: [BUG] Serial/dma stall/failure after "dmaengine: fsl-edma: extract common fsl-edma code (no changes in behavior intended)" Message-ID: <20180705081253.GA3513@jerusalem> References: <20180705073552.GI22377@vkoul-mobl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180705073552.GI22377@vkoul-mobl> User-Agent: Mutt/1.9.5 (2018-04-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Vinod, On Thu, Jul 05, 2018 at 01:05:52PM +0530, Vinod wrote: > On 04-07-18, 10:54, Krzysztof Kozlowski wrote: > > Hi, > > > > The commit 6ad069123f03bebe4315dea13d44845854ca6043 ("dmaengine: > > fsl-edma: extract common fsl-edma code (no changes in behavior > > intended)"), even though marked as no changes in behavior intended... > > make serial console with DMA broken after boot. The console just hangs > > - is not responsive even to SysRq. Usually after finishing boot - > > before or after login prompt. Sometimes login is allowed and then it > > hangs during printing dmesg. > > > > Board: Toradex Colibri VF50 (NXP VF500, Cortex A5, serial configured > > with DMA) on Iris Carrier. > > Angelo ? > sorry for this. As said i couldn't test it in any of those arm boards but i take a look. The only code part that changes is the initial setting up of the registers. I am checking that. Regards, Angelo > > > > Commit found with bisect: > > git bisect start > > # bad: [bce40927669338cc4a361fc97d46bf650573ce5c] Add linux-next > > specific files for 20180704 > > git bisect bad bce40927669338cc4a361fc97d46bf650573ce5c > > # good: [410da1e12ffed61129d61df5b7adce4d08c7f17c] net/smc: fix up > > merge error with poll changes > > git bisect good 410da1e12ffed61129d61df5b7adce4d08c7f17c > > # good: [decd57900d6fd743f7ddc1329400f4bd9cf54284] Merge > > remote-tracking branch 'crypto/master' > > git bisect good decd57900d6fd743f7ddc1329400f4bd9cf54284 > > # good: [e9484bb660753ca8a35d219db000fff967b70a2c] Merge > > remote-tracking branch 'tip/auto-latest' > > git bisect good e9484bb660753ca8a35d219db000fff967b70a2c > > # bad: [20adee487b5f252d3f38197d43487c004273d3d0] Merge > > remote-tracking branch 'slave-dma/next' > > git bisect bad 20adee487b5f252d3f38197d43487c004273d3d0 > > # good: [2df2577dce1d5fd98cac342fe857677a0556421b] Merge > > remote-tracking branch 'tty/tty-next' > > git bisect good 2df2577dce1d5fd98cac342fe857677a0556421b > > # good: [03b17ed8410a61f4f337c7bcfded1f744182edd5] spi: spi-fsl-dspi: > > Fix imprecise abort on VF500 during probe > > git bisect good 03b17ed8410a61f4f337c7bcfded1f744182edd5 > > # good: [85e1d42663a0c163002961d2685be952067b0dc2] staging: > > mt7621-eth: Fix memory leak in mtk_add_mac() error path > > git bisect good 85e1d42663a0c163002961d2685be952067b0dc2 > > # good: [b244f917acb7e1f492c40f6f4cf7be860a5065a5] staging: rtl8188eu: > > remove blank lines > > git bisect good b244f917acb7e1f492c40f6f4cf7be860a5065a5 > > # good: [b244f917acb7e1f492c40f6f4cf7be860a5065a5] staging: rtl8188eu: > > remove blank lines > > git bisect good b244f917acb7e1f492c40f6f4cf7be860a5065a5 > > # good: [b244f917acb7e1f492c40f6f4cf7be860a5065a5] staging: rtl8188eu: > > remove blank lines > > git bisect good b244f917acb7e1f492c40f6f4cf7be860a5065a5 > > # good: [6c796f514b7f8d0fef4733b971a5ded9e9a74490] Merge > > remote-tracking branch 'staging/staging-next' > > git bisect good 6c796f514b7f8d0fef4733b971a5ded9e9a74490 > > # good: [14dfa379ffd3ffd73729a72c289e9db6780a60ab] Merge branch > > 'topic/ste' into next > > git bisect good 14dfa379ffd3ffd73729a72c289e9db6780a60ab > > # good: [c1199875d327a9b3bbb3fb1cca0d467d3e625fbb] dmaengine: > > imx-sdma: Use GFP_NOWAIT for dma allocations > > git bisect good c1199875d327a9b3bbb3fb1cca0d467d3e625fbb > > # bad: [15efb0b488596a929bc00ce23aeb746ee6a7c14d] dmaengine: fsl-edma: > > fix trailing whitespace > > git bisect bad 15efb0b488596a929bc00ce23aeb746ee6a7c14d > > # bad: [5c1355ad87a2c138049bfafa753b44046492aebc] dmaengine: fsl-edma: > > add ColdFire mcf5441x edma support > > git bisect bad 5c1355ad87a2c138049bfafa753b44046492aebc > > # bad: [6ad069123f03bebe4315dea13d44845854ca6043] dmaengine: fsl-edma: > > extract common fsl-edma code (no changes in behavior intended) > > git bisect bad 6ad069123f03bebe4315dea13d44845854ca6043 > > # first bad commit: [6ad069123f03bebe4315dea13d44845854ca6043] > > dmaengine: fsl-edma: extract common fsl-edma code (no changes in > > behavior intended) > > > > Defconfig and boot log attached. I could not find any obvious error in boot log. > > > > Let me know if you need more data. > > > > Best regards, > > Krzysztof > > > > [ 0.000000] Memory policy: Data cache writeback > > [ 0.000000] cma: Reserved 16 MiB at 0x87000000 > > [ 0.000000] CPU: All CPU(s) started in SVC mode. > > [ 0.000000] random: get_random_bytes called from start_kernel+0xa0/0x3fc with crng_init=0 > > [ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 32512 > > [ 0.000000] Kernel command line: ip=:::::eth0: root=/dev/nfs console=tty1 console=ttyLP0,115200n8 consoleblank=0 > > [ 0.000000] Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) > > [ 0.000000] Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) > > [ 0.000000] Memory: 103836K/131072K available (6144K kernel code, 192K rwdata, 1604K rodata, 1024K init, 142K bss, 10852K reserved, 16384K cma-reserved) > > [ 0.000000] Virtual kernel memory layout: > > [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) > > [ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB) > > [ 0.000000] vmalloc : 0x88800000 - 0xff800000 (1904 MB) > > [ 0.000000] lowmem : 0x80000000 - 0x88000000 ( 128 MB) > > [ 0.000000] modules : 0x7f000000 - 0x80000000 ( 16 MB) > > [ 0.000000] .text : 0x(ptrval) - 0x(ptrval) (7136 kB) > > [ 0.000000] .init : 0x(ptrval) - 0x(ptrval) (1024 kB) > > [ 0.000000] .data : 0x(ptrval) - 0x(ptrval) ( 193 kB) > > [ 0.000000] .bss : 0x(ptrval) - 0x(ptrval) ( 143 kB) > > [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1 > > [ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 > > [ 0.000058] sched_clock: 64 bits at 132MHz, resolution 7ns, wraps every 2199023255551ns > > [ 0.000133] clocksource: arm_global_timer: mask: 0xffffffffffffffff max_cycles: 0x1e7178659b, max_idle_ns: 440795204301 ns > > [ 0.000232] Switching to timer-based delay loop, resolution 7ns > > [ 0.001506] Console: colour dummy device 80x30 > > [ 0.002451] console [tty1] enabled > > [ 0.002550] Calibrating delay loop (skipped), value calculated using timer frequency.. 264.00 BogoMIPS (lpj=1320000) > > [ 0.002649] pid_max: default: 32768 minimum: 301 > > [ 0.003151] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) > > [ 0.003263] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) > > [ 0.005190] CPU: Testing write buffer coherency: ok > > [ 0.007551] Setting up static identity map for 0x80100000 - 0x80100060 > > [ 0.010355] devtmpfs: initialized > > [ 0.027419] VFP support v0.3: implementor 41 architecture 2 part 30 variant 5 rev 1 > > [ 0.028335] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns > > [ 0.028470] futex hash table entries: 256 (order: -1, 3072 bytes) > > [ 0.031116] pinctrl core: initialized pinctrl subsystem > > [ 0.034483] NET: Registered protocol family 16 > > [ 0.038696] DMA: preallocated 256 KiB pool for atomic coherent allocations > > [ 0.042265] cpuidle: using governor menu > > [ 0.042687] hw-breakpoint: found 2 (+1 reserved) breakpoint and 1 watchpoint registers. > > [ 0.042783] hw-breakpoint: maximum watchpoint size is 4 bytes. > > [ 0.055428] vf610-pinctrl 40048000.iomuxc: initialized IMX pinctrl driver > > [ 0.125877] +V3.3: supplied by 3.3V > > [ 0.128267] SCSI subsystem initialized > > [ 0.129203] usbcore: registered new interface driver usbfs > > [ 0.129526] usbcore: registered new interface driver hub > > [ 0.129925] usbcore: registered new device driver usb > > [ 0.132755] i2c i2c-0: IMX I2C adapter registered > > [ 0.133005] i2c i2c-0: using dma0chan0 (tx) and dma0chan1 (rx) for DMA transfers > > [ 0.133778] pps_core: LinuxPPS API ver. 1 registered > > [ 0.133856] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti > > [ 0.134029] PTP clock support registered > > [ 0.138089] clocksource: Switched to clocksource arm_global_timer > > [ 0.178733] NET: Registered protocol family 2 > > [ 0.180526] tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 4096 bytes) > > [ 0.180694] TCP established hash table entries: 1024 (order: 0, 4096 bytes) > > [ 0.180788] TCP bind hash table entries: 1024 (order: 0, 4096 bytes) > > [ 0.180869] TCP: Hash tables configured (established 1024 bind 1024) > > [ 0.181366] UDP hash table entries: 256 (order: 0, 4096 bytes) > > [ 0.181484] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) > > [ 0.182137] NET: Registered protocol family 1 > > [ 0.183893] RPC: Registered named UNIX socket transport module. > > [ 0.183996] RPC: Registered udp transport module. > > [ 0.184043] RPC: Registered tcp transport module. > > [ 0.184085] RPC: Registered tcp NFSv4.1 backchannel transport module. > > [ 0.186339] hw perfevents: enabled with armv7_cortex_a5 PMU driver, 3 counters available > > [ 0.190606] Initialise system trusted keyrings > > [ 0.191215] workingset: timestamp_bits=30 max_order=15 bucket_order=0 > > [ 0.211916] NFS: Registering the id_resolver key type > > [ 0.212112] Key type id_resolver registered > > [ 0.212167] Key type id_legacy registered > > [ 0.212344] ntfs: driver 2.1.32 [Flags: R/W]. > > [ 0.214186] fuse init (API version 7.27) > > [ 0.228202] Key type asymmetric registered > > [ 0.228304] Asymmetric key parser 'x509' registered > > [ 0.228413] io scheduler noop registered > > [ 0.229036] io scheduler cfq registered (default) > > [ 0.229121] io scheduler mq-deadline registered > > [ 0.229171] io scheduler kyber registered > > [ 0.244133] 40027000.serial: ttyLP0 at MMIO 0x40027000 (irq = 19, base_baud = 4125000) is a FSL_LPUART > > [ 0.769644] console [ttyLP0] enabled > > [ 0.775130] 40028000.serial: ttyLP1 at MMIO 0x40028000 (irq = 20, base_baud = 4125000) is a FSL_LPUART > > [ 0.786693] 40029000.serial: ttyLP2 at MMIO 0x40029000 (irq = 21, base_baud = 4125000) is a FSL_LPUART > > [ 0.802286] brd: module loaded > > [ 0.830071] loop: module loaded > > [ 0.836930] nand: device found, Manufacturer ID: 0xc2, Chip ID: 0xf1 > > [ 0.843499] nand: Macronix NAND 128MiB 3,3V 8-bit > > [ 0.848347] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64 > > [ 0.856436] Bad block table found at page 65472, version 0x01 > > [ 0.862594] Bad block table found at page 65408, version 0x01 > > [ 0.868726] nand_read_bbt: bad block at 0x0000013c0000 > > [ 0.874135] 6 fixed-partitions partitions found on MTD device vf610_nfc > > [ 0.880908] Creating 6 MTD partitions on "vf610_nfc": > > [ 0.886046] 0x000000000000-0x000000020000 : "vf-bcb" > > [ 0.892637] 0x000000020000-0x000000180000 : "u-boot" > > [ 0.899247] 0x000000180000-0x0000001c0000 : "u-boot-env" > > [ 0.905999] 0x0000001c0000-0x000004080000 : "ubi1" > > [ 0.913304] 0x000004080000-0x000007f40000 : "ubi2" > > [ 0.920544] 0x000007f40000-0x000007f80000 : "reserved" > > [ 0.932515] libphy: Fixed MDIO Bus: probed > > [ 0.951887] libphy: fec_enet_mii_bus: probed > > [ 0.958566] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver > > [ 0.965935] usbcore: registered new interface driver usb-storage > > [ 0.972581] usbcore: registered new interface driver usbserial_generic > > [ 0.979465] usbserial: USB Serial support registered for generic > > [ 0.985705] usbcore: registered new interface driver ftdi_sio > > [ 0.991776] usbserial: USB Serial support registered for FTDI USB Serial Device > > [ 0.999432] usbcore: registered new interface driver pl2303 > > [ 1.005220] usbserial: USB Serial support registered for pl2303 > > [ 1.024975] snvs_rtc 400a7000.snvs:snvs-rtc-lp: rtc core: registered 400a7000.snvs:snvs-rtc-lp as rtc0 > > [ 1.034957] i2c /dev entries driver > > [ 1.043842] imx2-wdt 4003e000.wdog: timeout 60 sec (nowayout=0) > > [ 1.051554] sdhci: Secure Digital Host Controller Interface driver > > [ 1.057817] sdhci: Copyright(c) Pierre Ossman > > [ 1.062382] sdhci-pltfm: SDHCI platform and OF driver helper > > [ 1.069803] sdhci-esdhc-imx 400b2000.esdhc: Got CD GPIO > > [ 1.104211] mmc0: SDHCI controller on 400b2000.esdhc [400b2000.esdhc] using ADMA > > [ 1.128652] NET: Registered protocol family 17 > > [ 1.133569] Key type dns_resolver registered > > [ 1.138440] Registering SWP/SWPB emulation handler > > [ 1.145779] registered taskstats version 1 > > [ 1.150109] Loading compiled-in X.509 certificates > > [ 1.159775] VCC_USB[1-4]: supplied by 5V > > [ 1.169813] ci_hdrc ci_hdrc.1: EHCI Host Controller > > [ 1.175111] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1 > > [ 1.208308] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00 > > [ 1.216835] hub 1-0:1.0: USB hub found > > [ 1.220977] hub 1-0:1.0: 1 port detected > > [ 1.230260] snvs_rtc 400a7000.snvs:snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0) > > [ 1.338443] Micrel KSZ8041 400d1000.ethernet-1:00: attached PHY driver [Micrel KSZ8041] (mii_bus:phy_addr=400d1000.ethernet-1:00, irq=POLL) > > [ 1.368009] mmc0: new high speed SDHC card at address aaaa > > [ 1.377866] mmcblk0: mmc0:aaaa SL16G 14.8 GiB > > [ 1.390488] mmcblk0: p1 p2 > > [ 1.748191] usb 1-1: new high-speed USB device number 2 using ci_hdrc > > [ 3.449105] fec 400d1000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx > > [ 3.508218] Sending DHCP requests ., OK > > [ 3.572142] IP-Config: Got DHCP answer from 192.168.10.1, my address is 192.168.10.17 > > [ 3.580129] IP-Config: Complete: > > [ 3.583423] device=eth0, hwaddr=00:14:2d:2c:a1:2e, ipaddr=192.168.10.17, mask=255.255.255.0, gw=192.168.10.1 > > [ 3.593813] host=192.168.10.17, domain=, nis-domain=(none) > > [ 3.599833] bootserver=192.168.10.1, rootserver=192.168.10.1, rootpath=/srv/nfs/colibri_vf,v4,tcp > > [ 3.599854] nameserver0=192.168.10.1 > > [ 3.676511] VFS: Mounted root (nfs4 filesystem) on device 0:13. > > [ 3.684257] devtmpfs: mounted > > [ 3.693865] Freeing unused kernel memory: 1024K > > [ 3.700956] random: fast init done > > [ 4.950401] systemd[1]: System time before build time, advancing clock. > > [ 5.136393] random: systemd: uninitialized urandom read (16 bytes read) > > [ 5.186057] systemd[1]: systemd 232 running in system mode. (-PAM -AUDIT -SELINUX -IMA -APPARMOR -SMACK +SYSVINIT +UTMP -LIBCRYPTSETUP -GCRYPT -GNUTLS +ACL +XZ -LZ4 -SECCOMP +BLKID -ELFUTILS +KMOD -IDN) > > [ 5.206664] systemd[1]: Detected architecture arm. > > > > > -- > ~Vinod