On 26.09.2018 15:29, Guenter Roeck wrote: > On 09/26/2018 05:09 AM, John David Anglin wrote: >> On 2018-09-25 11:21 PM, Guenter Roeck wrote: >>> This patch causes my parisc qemu tests to fail. >>> Unfortunately I don't have any useful log output; the failure >>> is silent. Reverting the patch fixes the problem. >> Can you be more specific on how to run these tests? > > Sorry. Please see > > https://github.com/groeck/linux-build-test/tree/master/rootfs/parisc > > My tests enable a number of device and debug options on top of defconfig. > Those are not necessary, though. The problem can be reproduced with defconfig. > > With the initrd available from there, and with an image built using 'defconfig', > run > > qemu-system-hppa \ > -kernel vmlinux -no-reboot \ > -initrd rootfs.cpio.gz \ > -append 'rdinit=/sbin/init console=ttyS0,115200' \ > -nographic -monitor null > > I tested with qemu 2.12 and 3.0. Using "arch/parisc/boot/bzImage" as kernel > image does not make a difference. > > Note: The initrd auto-reboots. To avoid that, add "noreboot" as additional > command line option. You didn't mention which kernel version you were using. I did some testing with your rootfs & initrd, based on upstream git kernel with the latest patches from my for-next tree: https://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux.git/log/?h=for-next I did tested with my own 32-bit config and the 32bit-default-config. Overall I couldn't reproduce any issues. Can you try to come up with some more info for what I should look at? By the way, this patch is now running on all physical debian-buildd servers (64bit kernel) without any issues so far. Helge Here is just one of the outputs (which auto-reboots): [deller@ls3530 helge-system]$ ./hppa-softmmu/qemu-system-hppa -kernel vmlinux -no-reboot \ -initrd rootfs.cpio.gz \ -append 'rdinit=/sbin/init console=ttyS0,115200' \ -nographic -monitor null PARISC SeaBIOS Firmware, 1 x PA7300LC (PCX-L2) at 250.0 MHz, 512 MB RAM. SeaBIOS (version ?-20180204_140129-cloudburst.twiddle.net) BUILD: gcc: (GCC) 6.2.1 20161124 binutils: (GNU Binutils) 2.29.51.20171119 RamSize: 0x00000000 [cmos] === PCI bus & bridge init === PCI: pci_bios_init_bus_rec bus = 0x0 === PCI device probing === Found 2 PCI devices (max PCI bus is 00) === PCI new allocation pass #1 === PCI: check devices === PCI new allocation pass #2 === PCI: IO: 1000 - 113f PCI: 32: 00000000f2000000 - 00000000ff800000 PCI: map device bdf=00:00.0 bar 0, addr 00001000, size 00000100 [0: io] PCI: map device bdf=00:01.0 bar 1, addr 00001100, size 00000040 [0: io] PCI: map device bdf=00:01.0 bar 6, addr ff780000, size 00040000 [1: mem] PCI: map device bdf=00:01.0 bar 0, addr ff7c0000, size 00020000 [1: mem] PCI: map device bdf=00:00.0 bar 2, addr ff7e0000, size 00002000 [1: mem] PCI: map device bdf=00:00.0 bar 1, addr ff7e2000, size 00001000 [1: mem] PCI: init bdf=00:00.0 id=1000:0012 pci_init_device: vendor 0x1000 device 0x12 PCI: init bdf=00:01.0 id=8086:100e pci_init_device: vendor 0x8086 device 0x100e PCI: No VGA devices found Found 1 serial ports init hard drives pci_init_device: vendor 0x1000 device 0x12 pci_init_device: vendor 0x8086 device 0x100e found lsi53c895a at 00:00.0, io @ 1000 lsi 00:00.0 2:0 vendor='QEMU' product='QEMU CD-ROM' rev='2.5+' type=5 removable=1 Firmware Version 6.1 Duplex Console IO Dependent Code (IODC) revision 1 Memory Test/Initialization Completed ------------------------------------------------------------------------------ (c) Copyright 2017-2018 Helge Deller <deller@xxxxxx> and SeaBIOS developers. ------------------------------------------------------------------------------ Processor Speed State Coprocessor State Cache Size --------- -------- --------------------- ----------------- ---------- 0 250 MHz Active Functional 0 KB Available memory: 512 MB Good memory required: 16 MB Primary boot path: FWSCSI.6.0 Alternate boot path: LAN.0.0.0.0.0.0 Console path: SERIAL_1.9600.8.none Keyboard path: PS2 Autobooting Linux kernel which was loaded by qemu... Linux version 4.19.0-rc5-32bit+ (deller@ls3530) (gcc version 7.2.1 20170915 (Red Hat Cross 7.2.1-1) (GCC)) #733 SMP Wed Sep 26 18:13:01 CEST 2018 CPU0: thread -1, cpu 0, socket 0 FP[0] enabled: Rev 1 Model 19 The 32-bit Kernel has started... Kernel default page size is 4 KB. Huge pages disabled. bootconsole [ttyB0] enabled Initialized PDC Console for debugging. Determining PDC firmware type: System Map. model 00005020 00000481 00000000 02020202 7794d7fe 100000f0 00000004 000000ba 000000ba vers 00000008 CPUID vers 15 rev 8 (0x000001e8) capabilities 0x2 model 9000/778/B160L Memory Ranges: 0) Start 0x0000000000000000 End 0x000000001fffffff Size 512 MB Total Memory: 512 MB initrd: 2fe16000-2ffefa08 initrd: reserving 1fe16000-1ffefa08 (mem_max 20000000) PDT: Firmware does not provide any page deallocation information. percpu: Embedded 23 pages/cpu @(ptrval) s61504 r8192 d24512 u94208 SMP: bootstrap CPU ID is 0 Built 1 zonelists, mobility grouping on. Total pages: 129920 Kernel command line: rdinit=/sbin/init console=ttyS0,115200 log_buf_len individual max cpu contribution: 4096 bytes log_buf_len total cpu_extra contributions: 126976 bytes log_buf_len min size: 65536 bytes log_buf_len: 262144 bytes early log buf free: 63216(96%) Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) Memory: 502816K/524288K available (7152K kernel code, 1036K rwdata, 1655K rodata, 624K init, 364K bss, 21472K reserved, 0K cma-reserved) rcu: Hierarchical RCU implementation. NR_IRQS: 96 sched_clock: 32 bits at 250MHz, resolution 4ns, wraps every 8589934590ns Console: colour dummy device 128x48 Calibrating delay loop... 1644.13 BogoMIPS (lpj=8220672) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 1024 (order: 0, 4096 bytes) Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes) rcu: Hierarchical SRCU implementation. smp: Bringing up secondary CPUs ... smp: Brought up 1 node, 1 CPU devtmpfs: initialized random: get_random_u32 called from bucket_table_alloc+0x1ac/0x1d4 with crng_init=0 clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns futex hash table entries: 8192 (order: 6, 393216 bytes) NET: Registered protocol family 16 EISA bus registered Searching for devices... Found devices: 1. Phantom PseudoBC GSC+ Port at 0xffc00000 [8] { 7, 0x0, 0x504, 0x00000 } 2. Dino PCI Bridge at 0xfff80000 [8/0] { 13, 0x3, 0x680, 0x0000a } 3. Merlin+ 132 Dino RS-232 at 0xfff83000 [8/0/63] { 10, 0x0, 0x022, 0x0008c } 4. Merlin L2 160 (9000/778/B160L) at 0xfff10000 [62] { 0, 0x0, 0x502, 0x00004 } 5. Memory at 0xfffbf000 [63] { 1, 0x0, 0x067, 0x00009 } CPU(s): 1 out of 1 PA7300LC (PCX-L2) at 250.000000 MHz online Cache flush threshold set to 512 KiB Whole TLB flush 27185 cycles, Range flush 10457088 bytes 1094283 cycles Calculated TLB flush threshold 4 KiB TLB flush threshold set to 512 KiB Dino version 3.1 found at 0xfff80000 dino 8:0: PCI host bridge to bus 0000:00 pci_bus 0000:00: root bus resource [io 0x0000-0xffff] pci_bus 0000:00: root bus resource [mem 0xf0800000-0xff7fffff] pci_bus 0000:00: root bus resource [bus 00-ff] pci 0000:00:01.0: BAR 0: assigned [mem 0xf0800000-0xf081ffff] pci 0000:00:00.0: BAR 2: assigned [mem 0xf0820000-0xf0821fff] pci 0000:00:00.0: BAR 1: assigned [mem 0xf0822000-0xf08223ff] pci 0000:00:00.0: BAR 0: assigned [io 0x0100-0x01ff] pci 0000:00:01.0: BAR 1: assigned [io 0x0040-0x007f] powersw: Soft power switch support not available. vgaarb: loaded SCSI subsystem initialized usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb VFS: Disk quotas dquot_6.6.0 VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) NET: Registered protocol family 2 tcp_listen_portaddr_hash hash table entries: 256 (order: 1, 9216 bytes) TCP established hash table entries: 4096 (order: 2, 16384 bytes) TCP bind hash table entries: 4096 (order: 5, 131072 bytes) TCP: Hash tables configured (established 4096 bind 4096) UDP hash table entries: 256 (order: 2, 20480 bytes) UDP-Lite hash table entries: 256 (order: 2, 20480 bytes) NET: Registered protocol family 1 Trying to unpack rootfs image as initramfs... Freeing initrd memory: 1892K clocksource: cr16: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041786 ns clocksource: Switched to clocksource cr16 Enabling PDC chassis warnings support v0.05 ====[ backtrace testing ]=========== Testing a backtrace from process context. The following trace is a kernel self test and not a bug! CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.19.0-rc5-32bit+ #733 Hardware name: 9000/778/B160L Backtrace: [<1019ffbc>] show_stack+0x48/0x5c [<1087882c>] dump_stack+0x80/0x10c [<10269b18>] backtrace_regression_test+0x58/0x180 [<1019c9a8>] do_one_initcall+0xd0/0x1dc [<10101754>] 0x10101754 [<1088e380>] kernel_init+0x34/0x158 [<101a401c>] ret_from_kernel_thread+0x1c/0x24 Testing a backtrace from irq context. The following trace is a kernel self test and not a bug! CPU: 0 PID: 41 Comm: kworker/u64:2 Not tainted 4.19.0-rc5-32bit+ #733 Hardware name: 9000/778/B160L Workqueue: events_unbound call_usermodehelper_exec_work Backtrace: [<1019ffbc>] show_stack+0x48/0x5c [<1087882c>] dump_stack+0x80/0x10c [<10269aa0>] backtrace_test_irq_callback+0x30/0x50 [<101cbb84>] tasklet_action_common.isra.5+0x174/0x218 [<101cbcd8>] tasklet_action+0x50/0x60 [<108967cc>] __do_softirq+0x324/0x3dc [<101a6788>] call_on_stack+0x24/0x30 [<101a1094>] execute_on_irq_stack+0xac/0xbc [<101a1b9c>] do_softirq_own_stack+0x38/0x48 [<101cb480>] irq_exit+0xa4/0xbc [<101a1e88>] do_cpu_irq_mask+0x2dc/0x328 [<101a5068>] intr_return+0x0/0xc Testing a saved backtrace. The following trace is a kernel self test and not a bug! dump_trace+0x78/0xb8 save_stack_trace+0x40/0x78 backtrace_regression_test+0x13c/0x180 do_one_initcall+0xd0/0x1dc 0x10101754 kernel_init+0x34/0x158 ret_from_kernel_thread+0x1c/0x24 0xffffffff ====[ end of backtrace testing ]==== workingset: timestamp_bits=14 max_order=17 bucket_order=3 io scheduler noop registered io scheduler deadline registered io scheduler cfq registered (default) io scheduler mq-deadline registered io scheduler kyber registered test_bitfield: tests passed PDC Stable Storage facility v0.30 STI GSC/PCI core graphics driver Version 0.9b Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled console [ttyS0] disabled 8:0:63: ttyS0 at MMIO 0xfff83800 (irq = 16, base_baud = 454545) is a 16550A console [ttyS0] enabled console [ttyS0] enabled bootconsole [ttyB0] disabled bootconsole [ttyB0] disabled Linux agpgart interface v0.103 brd: module loaded loop: module loaded Uniform Multi-Platform E-IDE driver ide-gd driver 1.18 ide-cd driver 5.00 sym53c8xx 0000:00:00.0: enabling SERR and PARITY (0107 -> 0147) sym0: <895a> rev 0x0 at pci 0000:00:00.0 irq 17 sym0: PA-RISC Firmware, ID 7, Fast-40, LVD, parity checking sym0: SCSI BUS has been reset. scsi host0: sym-2.2.3 random: fast init done scsi 0:0:2:0: CD-ROM QEMU QEMU CD-ROM 2.5+ PQ: 0 ANSI: 5 scsi target0:0:2: tagged command queuing enabled, command queue depth 16. scsi target0:0:2: Beginning Domain Validation scsi target0:0:2: Domain Validation skipping write tests scsi target0:0:2: Ending Domain Validation st: Version 20160209, fixed bufsize 32768, s/g segs 256 sr 0:0:2:0: Power-on or device reset occurred sr 0:0:2:0: [sr0] scsi3-mmc drive: 16x/50x cd/rw xa/form2 cdda tray cdrom: Uniform CD-ROM driver Revision: 3.20 sr 0:0:2:0: Attached scsi generic sg0 type 5 e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI e100: Copyright(c) 1999-2006 Intel Corporation e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI e1000: Copyright (c) 1999-2006 Intel Corporation. e1000 0000:00:01.0: enabling SERR and PARITY (0103 -> 0143) e1000 0000:00:01.0 eth0: (PCI:33MHz:32-bit) 52:54:00:12:34:56 e1000 0000:00:01.0 eth0: Intel(R) PRO/1000 Network Connection LASI 82596 driver - Revision: 1.30 ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver ohci-pci: OHCI PCI platform driver uhci_hcd: USB Universal Host Controller Interface driver HP SDC: No SDC found. mousedev: PS/2 mouse device common for all mice rtc-generic rtc-generic: rtc core: registered rtc-generic as rtc0 hidraw: raw HID events driver (C) Jiri Kosina usbcore: registered new interface driver usbhid usbhid: USB HID core driver NET: Registered protocol family 17 rtc-generic rtc-generic: setting system clock to 2018-09-26 16:18:14 UTC (1537978694) Unstable clock detected, switching default tracing clock to "global" If you want to keep using the local clock, then add: "trace_clock=local" on the kernel command line Freeing unused kernel memory: 624K Write protecting the kernel read-only data: 1655k Run /sbin/init as init process Starting logging: OK Initializing random number generator... random: dd: uninitialized urandom read (512 bytes read) done. Starting network: OK Found console ttyS0 Boot successful. Rebooting Found console ttyS0 Stopping network: OK Saving random seed... random: dd: uninitialized urandom read (512 bytes read) done. Stopping logging: OK umount: devtmpfs busy - remounted read-only umount: can't unmount /: Invalid argument The system is going down NOW! Sent SIGTERM to all processes Sent SIGKILL to all processes Requesting system reboot reboot: Restarting system SeaBIOS: PDC_BROADCAST_RESET (reset system) called with ARG3=fee1dead ARG4=10b0be60 SeaBIOS wants SYSTEM RESET. ***************************
