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Subjectsyslog full of kernel BUGS, frequent intermittent instability
Hi folks,

My recently installed Mandrake 9.0 has been unstable since day one. The syslog is full of kernel BUG lines (see below), the crashes are frequent, and I don't know how to reproduce them - recognize no pattern to them.

I have run memtest86 overnight (~13 hours) - it reported no errors. So would I be correct in assuming that my RAM can be ruled out? I have also passed both the "noapic" and "mem=nopentium" parameters to lilo, but that hasn't resulted in any noticeable improvement.

Also, I have a big fan blowing into the open box to cool everything, which fixed an overheating problem I had last summer. Also I recently cleaned out any dust inside the box, which wasn't much anyway.

The system is dual booting with win98 - and while win 98 does crash occasionally, it is much less frequent than what I'm getting with the mdk9 partition.

The hardware is as follows:

MSI super7 mobo w/ alladin 5 chipset
AMD k6-2 350 MHz w/ 3D-now
128m pc-100 RAM (single stick)
/dev/hda = 13 gig Quantum Fireball
/dev/hdc = Ricoh 7060A CDRW
PSU: 235 watt (Kobian)
video: Voodoo Banshee (Creative) AGP/PCI plugged into AGP slot
sound: creative sb16 P&P (vibra) ISA card
USB device: Alcatel SpeedtouchUSB ADSL modem

note: I do not have a floppy drive installed

My BIOS is at the "failsafe" settings, with only one or two exceptions (to keep it from running like a 386). No overclocking or any other tweaking anywhere on my part. The BIOS has been flashed to the latest recommmended version for my particular mobo revision.

This is a stock mandrake 9.0 installation.

$ cat /proc/version
Linux version 2.4.19-16mdk (quintela@bi.mandrakesoft.com) (gcc version 3.2 (Mandrake Linux 9.0 3.2-1mdk)) #1 Fri Sep 20 18:15:05 CEST 2002

The crashes often result in a hard freeze (no reaction to ctl-alt-del or to ctl-alt-bckspc - keyboard LED doesn't respond to caps lock). I am in X11 almost exclusively - so I have not seen whether it will also crash at the console. Sometimes I can go days without a crash, other times it can crash several times in a few hours. Not all of the kernel BUG messages resulted in my system crashing, at times I notice the BUG line in the log but wouldn't have noticed anything unusual as a user in X.

I would appreciate any insight anyone can provide. Let me know if I can provide any more info.

I haven't suscribed to this ML because I don't want the volume in my mailbox - but will monitor this thread through google groups.

sample output of grep -i bug /var/log/syslog (on a bad day)

Jan 4 18:32:38 localhost kernel: kernel BUG at page_alloc.c:224!
Jan 4 18:32:38 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:39:21 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:39:50 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:39:50 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 18:41:48 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:41:48 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 18:42:48 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:42:53 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:42:53 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 18:43:35 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:43:35 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 18:43:43 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:43:43 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 18:43:55 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 18:43:55 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 18:44:42 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:00:14 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:00:14 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 19:00:32 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:00:32 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 19:25:32 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:25:33 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:25:33 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:25:33 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:25:33 localhost kernel: kernel BUG at mmap.c:1245!
Jan 4 19:25:38 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:25:38 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 4 19:36:53 localhost kernel: kernel BUG at page_alloc.c:224!
Jan 4 19:36:55 localhost kernel: kernel BUG at page_alloc.c:224!

Syslog excerpt providing some context for a single crash;

Jan 13 12:01:01 localhost CROND[2334]: (root) CMD (nice -n 19 run-parts /etc/cron.hourly)
Jan 13 13:01:00 localhost CROND[2399]: (root) CMD (nice -n 19 run-parts /etc/cron.hourly)
Jan 13 13:21:20 localhost kernel: kernel BUG at page_alloc.c:224!
Jan 13 13:21:20 localhost kernel: invalid operand: 0000
Jan 13 13:21:20 localhost kernel: CPU: 0
Jan 13 13:21:20 localhost kernel: EIP: 0010:[rmqueue+631/672] Not tainted
Jan 13 13:21:20 localhost kernel: EIP: 0010:[<c0134307>] Not tainted
Jan 13 13:21:20 localhost kernel: EFLAGS: 00013202
Jan 13 13:21:20 localhost kernel: eax: 00000040 ebx: 00007000 ecx: 00001000 edx: 00002c2c
Jan 13 13:21:20 localhost kernel: esi: c100001c edi: c10797ac ebp: c025f5cc esp: c67e1e54
Jan 13 13:21:20 localhost kernel: ds: 0018 es: 0018 ss: 0018
Jan 13 13:21:20 localhost kernel: Process X (pid: 1942, stackpage=c67e1000)
Jan 13 13:21:20 localhost kernel: Stack: 00001000 c10797ac c772d3e0 00001c2c 00003292 00000000 c025f5cc c025f5cc
Jan 13 13:21:20 localhost kernel: c025f788 00000001 c67e1eb4 c0134564 c5725e2c c67e1ec8 00000000 00000018
Jan 13 13:21:20 localhost kdm[1939]: Server for display :0 terminated unexpectedly
Jan 13 13:21:20 localhost kernel: c025f5cc c025f784 00000000 000001d2 c10797d8 00104025 00000025 c35ba4e0
Jan 13 13:21:21 localhost kernel: Call Trace: [__alloc_pages+116/608] [do_anonymous_page+98/272] [handle_mm_fault+87/192] [do_page_fault+529/1397] [ppp_synctty:__insmod_ppp_synctty_O/lib/modules/2.4.19-16mdk/kernel/driv+-493048/96]
Jan 13 13:21:21 localhost kernel: Call Trace: [<c0134564>] [<c012a122>] [<c012a3d7>] [<c0118551>] [<c8862a08>]
Jan 13 13:21:21 localhost kernel: [ppp_synctty:__insmod_ppp_synctty_O/lib/modules/2.4.19-16mdk/kernel/driv+-492738/96] [ppp_synctty:__insmod_ppp_synctty_O/lib/modules/2.4.19-16mdk/kernel/driv+-437849/96] [handle_IRQ_event+55/112] [do_IRQ+123/192] [do_IRQ+154/192] [do_page_fault+0/1397]
Jan 13 13:21:21 localhost kernel: [<c8862b3e>] [<c88701a7>] [<c010a247>] [<c010a3db>] [<c010a3fa>] [<c0118340>]
Jan 13 13:21:21 localhost kernel: [error_code+52/64]
Jan 13 13:21:21 localhost kernel: [<c01090f4>]
Jan 13 13:21:21 localhost kernel:
Jan 13 13:21:21 localhost kernel: Code: 0f 0b e0 00 80 5e 23 c0 8b 47 18 a9 80 00 00 00 74 08 0f 0b
Jan 13 13:21:21 localhost kernel: kernel BUG at page_alloc.c:97!
Jan 13 13:21:21 localhost kernel: invalid operand: 0000
Jan 13 13:21:21 localhost kernel: CPU: 0
Jan 13 13:21:21 localhost kernel: EIP: 0010:[__free_pages_ok+71/848] Not tainted
Jan 13 13:21:21 localhost kernel: EIP: 0010:[<c0133d87>] Not tainted
Jan 13 13:21:21 localhost kernel: EFLAGS: 00210286
Jan 13 13:21:21 localhost kernel: eax: ffffffff ebx: c10797ac ecx: c4ff5e48 edx: 0000462d
Jan 13 13:21:21 localhost kernel: esi: 00000000 edi: 00000000 ebp: c63bbf08 esp: c63bbed0
Jan 13 13:21:21 localhost kernel: ds: 0018 es: 0018 ss: 0018
Jan 13 13:21:21 localhost kernel: Process kpaint (pid: 2459, stackpage=c63bb000)
Jan 13 13:21:21 localhost kernel: Stack: c025f67c fffffffe 00007000 c100001c c10e98d8 c10e98ac c025f5cc c102c01c
Jan 13 13:21:21 localhost kernel: 00200213 ffffffff 00000419 02c2c025 00034000 c552eb04 c63bbf28 c012a92f
Jan 13 13:21:21 localhost kernel: c10797ac c10797ac 00000035 40400000 c78fc404 40400000 c63bbf60 c01291c2
Jan 13 13:21:21 localhost kernel: Call Trace: [zap_pte_range+271/308] [zap_page_range+130/256] [exit_mmap+180/304] [mmput+53/128] [do_exit+133/560]
Jan 13 13:21:21 localhost kernel: Call Trace: [<c012a92f>] [<c01291c2>] [<c012bcb4>] [<c011a385>] [<c011e915>]
Jan 13 13:21:21 localhost kernel: [sys_exit+17/32] [system_call+51/64]
Jan 13 13:21:21 localhost kernel: [<c011eaf1>] [<c0108fe3>]
Jan 13 13:21:21 localhost kernel:
Jan 13 13:21:21 localhost kernel: Code: 0f 0b 61 00 80 5e 23 c0 8b 15 30 86 2c c0 89 d8 29 d0 c1 f8
Jan 13 13:21:32 localhost devfsd[105]: error calling: "unlink" in "GLOBAL"
Jan 13 13:21:37 localhost last message repeated 13 times
Jan 13 13:23:04 localhost init: Switching to runlevel: 6
Jan 13 13:23:07 localhost lisa: Stopping lisa: succeeded
Jan 13 13:23:07 localhost dm: Stopping display manager:
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