Hard Lockup – might be related to FragmentSmack
Hello Folks, My SPARC crashed while I was on holiday, and I got the messages below in my kernel log. This happened for almost every of my 64 threads, and the SPARC was highly unresponsive. I am wondering whether this might be related to the FragmentSmack bug recently discovered, since it occurs in a network-facing process, or if this is another, unrelated, possibly sparc-specific bug. I hope this report is of any interest. Cheers, Gabriel --- Kernel log extract --- Aug 6 20:37:37 puddlejumper kernel: [5265550.521042] WARNING: CPU: 29 PID: 76328 at /build/linux-hhlSpw/linux-4.16.5/arch/sparc/kernel/nmi.c:78 perfctr_irq+0x284/0x300 Aug 6 20:37:37 puddlejumper kernel: [5265550.521046] Watchdog detected hard LOCKUP on cpu 29 Aug 6 20:37:37 puddlejumper kernel: [5265550.521051] Modules linked in: zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) zlib_deflate veth fuse bridge stp llc ip6table_filter ip6_tables iptable_filter ipt_ MASQUERADE nf_nat_masquerade_ipv4 xt_nat iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack xt_CHECKSUM xt_tcpudp iptable_mangle binfmt_misc sg n2_crypto flash des_generic n2_rng rng_core ip_tables x_ tables autofs4 ext4 crc16 mbcache jbd2 fscrypto ecb raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid1 raid0 multipath linear md_mod ses enclosure sd_mod sr_mo d cdrom uas usb_storage ohci_pci lpfc nvmet_fc nvme_fc mptsas ohci_hcd scsi_transport_fc ehci_pci scsi_transport_sas ehci_hcd nvmet mptscsih nvme_fabrics scsi_mod nvme_core Aug 6 20:37:37 puddlejumper kernel: [5265550.521368] usbcore niu configfs usb_common mptbase Aug 6 20:37:37 puddlejumper kernel: [5265550.521400] CPU: 29 PID: 76328 Comm: lighttpd Tainted: P D W O L 4.16.0-1-sparc64-smp #1 Debian 4.16.5-1 Aug 6 20:37:37 puddlejumper kernel: [5265550.521403] Call Trace: Aug 6 20:37:37 puddlejumper kernel: [5265550.521418] [0046b6b0] __warn+0xd0/0x100 Aug 6 20:37:37 puddlejumper kernel: [5265550.521426] [0046b714] warn_slowpath_fmt+0x34/0x60 Aug 6 20:37:37 puddlejumper kernel: [5265550.521436] [00a63a04] perfctr_irq+0x284/0x300 Aug 6 20:37:37 puddlejumper kernel: [5265550.521446] [004209f4] tl0_irq15+0x14/0x20 Aug 6 20:37:37 puddlejumper kernel: [5265550.521451] ---[ end trace ac1e508ecf257e7b ]--- Aug 6 20:37:37 puddlejumper kernel: [5266681.842613] TCP: request_sock_TCP: Possible SYN flooding on port 80. Sending cookies. Check SNMP counters.
git and emacs25 are not installable
I tried to install git and emacs25, yet I get the following: # apt-get install git Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: git : Depends: git-man (< 1:2.15.1-.) but 1:2.16.1-1 is to be installed Recommends: patch but it is not going to be installed E: Unable to correct problems, you have held broken packages. # apt-get install emacs25-nox Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: emacs25-nox : Depends: emacs25-bin-common (= 25.2+1-5) but it is not going to be installed E: Unable to correct problems, you have held broken packages. I have run apt-get update, my repos are up to date, yet the problem does not go away.
Re: Installing GRUB
John Paul Adrian Glaubitz writes: > Which images did you use to install Debian onto your SPARC? I've used older images, it has been like 2 months since I've tried to install Debian on my SPARC. > The current images should install just fine and also install SILO > automatically. I verified that with the images that are currently > available for download from [1]. Good to know the new images are working. I'll try them out as soon as possible. Cheers, Gabriel Pérez-Cerezo
Installing GRUB
Hi, I've got a Sun SPARC enterprise T5120 that is still waiting for a bootloader after having installed Debian (since silo didn't get installed). Does anyone here have experience with GRUB for SPARC? Is GRUB installable/usable? How do I install it? Thank you for your time, Gabriel Pérez-Cerezo
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
John Paul Adrian Glaubitz writes: > So just passing "console=ttyS0 keep_bootcon" has to work. If it > doesn't, there might be something incorrectly configured with the > hardware. > > There isn't really anything else that needs to be done to get a serial > console. Crap. I'll get back to this when i have time, I'll try reinstalling the system.
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
Also, I've already tried changing /etc/default/console-setup and it edits itself back to its former state.
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
John Paul Adrian Glaubitz writes: > Can you please provide the full log of boot messages from SILO to when > the system is finished booting during a normal boot where you cannot > get a login prompt? There must be something wrong in your > configuration. I've attached a log with the console boot option (log) and another one without (log2). log Description: Log with console boot option log2 Description: Log without console boot option
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
John Paul Adrian Glaubitz writes: > Can you check the contents of /sys/dev/char or /sys/class/tty? Ok. Here are some outputs. root@(none):/# ls /sys/dev/char/ 10:1 10:62 1:74:12 4:2 4:274:34 4:41 4:49 4:56 4:63 7:0 10:139 10:63 1:84:13 4:20 4:28 4:35 4:42 4:5 4:57 4:64 7:1 10:231 13:63 1:94:14 4:21 4:29 4:36 4:43 4:50 4:58 4:7 7:128 10:234 1:1254:0 4:15 4:22 4:3 4:37 4:44 4:51 4:59 4:8 7:129 10:58 1:11 4:04:16 4:23 4:30 4:38 4:45 4:52 4:64:9 10:59 1:34:14:17 4:24 4:31 4:39 4:46 4:53 4:60 5:0 10:60 1:44:10 4:18 4:25 4:32 4:4 4:47 4:54 4:61 5:1 10:61 1:54:11 4:19 4:26 4:33 4:40 4:48 4:55 4:62 5:2 root@(none):/# ls /sys/class/tty/ console tty12 tty19 tty25 tty31 tty38 tty44 tty50 tty57 tty63 ptmx tty13 tty2 tty26 tty32 tty39 tty45 tty51 tty58 tty7 tty tty14 tty20 tty27 tty33 tty4 tty46 tty52 tty59 tty8 tty0 tty15 tty21 tty28 tty34 tty40 tty47 tty53 tty6 tty9 tty1 tty16 tty22 tty29 tty35 tty41 tty48 tty54 tty60 ttyS0 tty10tty17 tty23 tty3 tty36 tty42 tty49 tty55 tty61 tty11tty18 tty24 tty30 tty37 tty43 tty5 tty56 tty62 root@(none):/# ls /sys/class/tty/ttyS0 close_delay dev io_type irq power uartclk closing_wait device iomem_base line subsystem uevent custom_divisor flags iomem_reg_shift port type xmit_fifo_size root@(none):/# cat /sys/class/tty/ttyS0/dev 4:64 root@(none):/# ls /sys/dev/char/4\:64 close_delay dev io_type irq power uartclk closing_wait device iomem_base line subsystem uevent custom_divisor flags iomem_reg_shift port type xmit_fifo_size I've also found this thing here: Will change anything if i add /dev/ttyS0 to ACTIVE_CONSOLES? root@(none):/# cat /etc/default/console-setup # CONFIGURATION FILE FOR SETUPCON # Consult the console-setup(5) manual page. ACTIVE_CONSOLES="/dev/tty[1-6]" CHARMAP="UTF-8" CODESET="Lat15" FONTFACE="Fixed" FONTSIZE="8x16" VIDEOMODE= # The following is an example how to use a braille font # FONT='lat9w-08.psf.gz brl-8x8.psf' Thank you in Advance, Gabriel
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
John Paul Adrian Glaubitz writes: > Can you check the contents of /sys/dev/char or /sys/class/tty? I'll do it tomorrow. I'm too tired to continue and I just shut down the server for the night (it takes really long to boot up). Cheers, Gabriel
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
John Paul Adrian Glaubitz writes: > Are you sure that ttyS0 is the name of your serial device? > > Check the kernel messages. It might be named differently. It may be named ttyHV0, but as much as I have tried it with that name, it still doesn't work. However, I've been able to boot to shell (bypassing init) and there is no /dev/ttyHV0 in the filesystem. I'll see if I can try more stuff tomorrow. Cheers, Gabriel
Re: No login prompt after booting in LDOM on SPARC Enterprise T5120
John Paul Adrian Glaubitz writes: > Can you try adding "console=ttyS0,9600,8n1 keep_bootcon"? keeping the console stuff, I get output until here: [12194.169207] Btrfs loaded, crc32c=crc32c-generic [12194.309242] BTRFS: device fsid ddd0fc8f-c6b3-449f-813a-be5503368f34 devid 1 transid 2072 /dev/vdiska2 if I only use keep_bootcon, i get until: Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. But no login console in neither case.
No login prompt after booting in LDOM on SPARC Enterprise T5120
Hi, I'm running a SPARC Enterprise T5120 with OpenBSD in the primary Logical Domain. I have installed Debian successfully in an LDOM, however, I haven't set the recommended options for T5120 in /boot/silo.conf. I have tried booting it with the workaround (Linux console=ttyS0), but it also doesn't show anything (in fact, boot output ends earlier). Does anyone know what options I should give to the kernel in order to boot into a login screen? Thank you in advance, Gabriel
