Sorry for taking so long to get back on this. We've been busy with some
other issues. Some comments are inline below in addition to the output
from a new crash.
Quoting Jeff Dike <[EMAIL PROTECTED]>:
On Wed, Feb 15, 2006 at 01:09:33PM -0800, Anthony Brock wrote:
Also, this is x86_64, correct? If so, try
echo 0 > /proc/sys/kernel/vsyscall64
Both host and client are 32-bit. The host is a dual AMD Opteron, but
we're running the 32-bit (SMP) version of Linux.
As for the OOM cases, the data that BB asked for would still be
helpful in diagnosing them.
I'll try to get that to you later this week.
In the mean time, we've experienced a second crash with the
2.6.15.1-bs1 kernel. It looks to be very similar to the previous crash.
Only, in this case, I issued the command "uml_mconsole www-prod-1 sysrq
s" in preparation for a backup (after issuing a "uml_mconsole $1 stop"
command). I am including the first dump below. The rest of the dump can
be found at:
http://www.coherenthosting.com/prj/uml/miscellaneous/error.txt
The time stamp at the top is in UTC, and specifies when the crash started.
Tony
-- time-stamp -- Feb/27/06 16:03:00 --
SysRq : Emergency Sync
events/0: page allocation failure. order:0, mode:0x20
0829f510: [<0808a1f3>] __alloc_pages+0x274/0x286
0829f550: [<0808c7e5>] kmem_getpages+0x4a/0x9f
0829f564: [<0808d2b4>] cache_grow+0x96/0x122
0829f598: [<0808d493>] cache_alloc_refill+0x153/0x186
0829f5bc: [<0808d62d>] kmem_cache_alloc+0x34/0x44
0829f5d0: [<0808d134>] alloc_slabmgmt+0x20/0x45
0829f5e4: [<0808d2cc>] cache_grow+0xae/0x122
0829f614: [<0808d493>] cache_alloc_refill+0x153/0x186
0829f638: [<0808d6dc>] __kmalloc+0x5b/0x6d
0829f654: [<08171704>] __alloc_skb+0x52/0x129
0829f670: [<0806097e>] uml_net_rx+0x1e/0x13c
0829f690: [<08060ac0>] uml_net_interrupt+0x1f/0x91
0829f6d4: [<0808595b>] handle_IRQ_event+0x24/0x54
0829f6f8: [<080859de>] __do_IRQ+0x53/0x91
0829f70c: [<08057bc8>] do_IRQ+0x20/0x2c
0829f714: [<08057d5d>] sigio_handler+0xa5/0xcf
0829f72c: [<0805e435>] sig_handler_common_skas+0xa5/0xbe
0829f750: [<0806792e>] sig_handler+0xe/0x11
0829f860: [<08057cdf>] sigio_handler+0x27/0xcf
0829f87c: [<0805e435>] sig_handler_common_skas+0xa5/0xbe
0829f8a0: [<0806792e>] sig_handler+0xe/0x11
0829f9e8: [<0805a694>] set_signals+0xa4/0xc0
0829fa28: [<0805a694>] set_signals+0xa4/0xc0
0829fa64: [<0805a694>] set_signals+0xa4/0xc0
0829fa8c: [<0805a694>] set_signals+0xa4/0xc0
0829fae0: [<0805a641>] set_signals+0x51/0xc0
0829fb80: [<081607e6>] handle_sysrq+0x1c/0x20
0829fb94: [<0806258b>] mconsole_sysrq+0x5d/0x63
0829fbc0: [<0806220f>] mconsole_stop+0x40/0x78
0829fbcc: [<08061e1d>] mc_work_proc+0x38/0x4f
0829fbdc: [<0807c175>] worker_thread+0x188/0x205
0829fbe4: [<08061de5>] mc_work_proc+0x0/0x4f
0829fc08: [<0806bde4>] default_wake_function+0x0/0x12
0829fc2c: [<0807bfed>] worker_thread+0x0/0x205
0829fc30: [<0807f21b>] kthread+0x74/0x9a
0829fc4c: [<0807f1a7>] kthread+0x0/0x9a
0829fc54: [<0806784e>] run_kernel_thread+0x30/0x3b
0829fc64: [<0807f1a7>] kthread+0x0/0x9a
0829fc70: [<08067838>] run_kernel_thread+0x1a/0x3b
0829fce8: [<0806b8e4>] schedule_tail+0x23/0xb5
0829fcfc: [<0805de14>] new_thread_handler+0x7f/0xa7
0829fd00: [<0807f1a7>] kthread+0x0/0x9a
Mem-info:
DMA per-cpu:
cpu 0 hot: low 0, high 18, batch 3 used:2
cpu 0 cold: low 0, high 6, batch 1 used:5
DMA32 per-cpu: empty
Normal per-cpu: empty
HighMem per-cpu: empty
Free pages: 376kB (0kB HighMem)
Active:2985 inactive:8684 dirty:4 writeback:0 unstable:0 free:94
slab:3428 mapped:933 pagetables:48
DMA free:376kB min:1024kB low:1280kB high:1536kB active:11940kB
inactive:34736kB present:65536kB pages_scanned:0 all_unreclaimable?
no
lowmem_reserve[]: 0 0 0 0
DMA32 free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 0*4kB 1*8kB 1*16kB 1*32kB 1*64kB 0*128kB 1*256kB 0*512kB 0*1024kB
0*2048kB 0*4096kB = 376kB
DMA32: empty
Normal: empty
HighMem: empty
Swap cache: add 0, delete 0, find 0/0, race 0+0
Free swap = 655340kB
Total swap = 655340kB
Free swap: 655340kB
16384 pages of RAM
0 pages of HIGHMEM
952 reserved pages
11194 pages shared
0 pages swap cached
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