Random lockups with kernels 2.4.6-pre8+

From: Felix Braun (Felix.Braun@McGill.ca)
Date: Wed Jul 04 2001 - 19:51:46 EST

Hi there,

I have been experiencing seemingly random lock ups with kernels 2.4.6-pre8
and 2.4.6-final which didn't occur when running on 2.4.6-pre5. I am not
yet able to reproduce this behaviour (I will look into this as soon as I
get some more time) but when it occurs the symptoms are consistent (it
happened three times so far):

Some programs consistently hang while others seem to continue running. For
example X and enlightenment run while top hangs (it has even segfaulted
once) xdm runs partially it sets up a new X session when reset, backgroud
colour and so forth, but the xdm-greeter does not appear. When trying to
shut down the computer from this state it consistently hangs while trying
to kill xfsft. SysReq works like a charm :-)

I am running on a Fujitsu Lifbook B110 with Intel PIIX4 Chipset 32MB of
RAM 64MB of swap APM enabled. As I have no clue what causes this erratic
behaviour, I don't know what other information might be relevant but will
gladly provide it if somebody asks. Just in case I'll attach the output of
dmesg (running 2.4.6-pre5 BTW unlike this kernel 2.4.6-pre8 and final were
compiled with gcc-2.95.3)

I'll follow up when I'm able to reliably reproduce the lock ups.



Linux version 2.4.6-pre5 (root@eressea) (gcc version 3.0) #15 Sun Jun 24 21:54:46 EDT 2001 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable) BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000f1000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 0000000001fec000 (usable) BIOS-e820: 0000000001fec000 - 0000000001ff0000 (ACPI data) BIOS-e820: 0000000001ff0000 - 0000000002000000 (ACPI NVS) BIOS-e820: 00000000ffff1000 - 0000000100000000 (reserved) On node 0 totalpages: 8172 zone(0): 4096 pages. zone(1): 4076 pages. zone(2): 0 pages. Kernel command line: rw root=305 mem=32688K Initializing CPU#0 Detected 232.106 MHz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 463.66 BogoMIPS Memory: 30328k/32688k available (884k kernel code, 1972k reserved, 189k data, 176k init, 0k highmem) Dentry-cache hash table entries: 4096 (order: 3, 32768 bytes) Inode-cache hash table entries: 2048 (order: 2, 16384 bytes) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 8192 (order: 3, 32768 bytes) CPU: Before vendor init, caps: 008001bf 00000000 00000000, vendor = 0 Intel Pentium with F0 0F bug - workaround enabled. Intel old style machine check architecture supported. Intel old style machine check reporting enabled on CPU#0. CPU: After vendor init, caps: 008001bf 00000000 00000000 00000000 CPU: After generic, caps: 008001bf 00000000 00000000 00000000 CPU: Common caps: 008001bf 00000000 00000000 00000000 CPU: Intel Mobile Pentium MMX stepping 01 Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX PCI: PCI BIOS revision 2.10 entry at 0xfda20, last bus=1 PCI: Using configuration type 1 PCI: Probing PCI hardware PCI: Using IRQ router PIIX [8086/7110] at 00:01.0 got res[10000000:10000fff] for resource 0 of Ricoh Co Ltd RL5c475 Limiting direct PCI/PCI transfers. Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 apm: BIOS version 1.2 Flags 0x03 (Driver version 1.14) Starting kswapd v1.8 devfs: v0.106 (20010617) Richard Gooch (rgooch@atnf.csiro.au) devfs: boot_options: 0x2 pty: 256 Unix98 ptys configured block: queued sectors max/low 20032kB/6677kB, 64 slots per queue Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx PIIX4: IDE controller on PCI bus 00 dev 09 PIIX4: chipset revision 1 PIIX4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xf4f0-0xf4f7, BIOS settings: hda:DMA, hdb:pio hda: FUJITSU MHD2032AT, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hda: 6354432 sectors (3253 MB), CHS=788/128/63, UDMA(33) Partition check: /dev/ide/host0/bus0/target0/lun0: p1 p2 < p5 p6 p7 p8 p9 > NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 2048 bind 4096) NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. fatfs: bogus logical sector size 5376 reiserfs: checking transaction log (device 03:05) ... Using r5 hash to sort names ReiserFS version 3.6.25 VFS: Mounted root (reiserfs filesystem). Mounted devfs on /dev Freeing unused kernel memory: 176k freed Adding Swap: 32220k swap-space (priority 0) Adding Swap: 32216k swap-space (priority 1) inserting floppy driver for 2.4.6-pre5 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 reiserfs: checking transaction log (device 03:09) ... Using r5 hash to sort names ReiserFS version 3.6.25 reiserfs: checking transaction log (device 03:07) ... Using r5 hash to sort names ReiserFS version 3.6.25 Soundblaster audio driver Copyright (C) by Hannu Savolainen 1993-1996 SB 3.01 detected OK (220) ESS chip ES1879 detected <ESS ES1879 AudioDrive (rev 11) (3.01)> at 0x220 irq 5 dma 0,5 Serial driver version 5.05a (2001-03-20) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A CSLIP: code copyright 1989 Regents of the University of California PPP generic driver version 2.4.1

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This archive was generated by hypermail 2b29 : Sat Jul 07 2001 - 21:00:14 EST