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.
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
Attachment:
vf_defconfig
Description: Binary data
[ 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 <giometti@xxxxxxxx> [ 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.
