panic: kmem_malloc(16384): kmem_map too small: md-mounted /tmp filled up
- From: Mikhail Teterin <mi+kde@xxxxxxxxxxxxxxxxx>
- Date: Tue, 27 Feb 2007 10:59:08 -0500
The memory-mounted /tmp filled up on this 6.2-PRERELEASE system (as of Nov 7).
Unfortunately, instead of the process existing due to ENOSPC, the entire
system paniced:
[...]
g_vfs_done():md0[WRITE(offset=982335488, length=131072)]error = 28
g_vfs_done():md0[WRITE(offset=982466560, length=131072)]error = 28
panic: kmem_malloc(16384): kmem_map too small: 259153920 total allocated
Uptime: 34d21h13m21s
Dumping 767 MB (2 chunks)
chunk 0: 1MB (159 pages) ... ok
chunk 1: 767MB (196288 pages) 751 735 719 703 687 671 655 639 623 607 591
575 559 543 527 511 495 479 463 447 431 415 399 383 367 351 335 319 303 287
271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 15 ... ok
Dump complete
Automatic reboot in 15 seconds - press a key on the console to abort
Rebooting...
I don't think, such DoS-ing is normal -- a regular user shot the entire system
in the knee...
Is anybody interested in the stack/etc.? Is this something, that's fixed in
the more recent 6.2?
Machine has 3/4Gb RAM and ample swap:
Device 1K-blocks Used Avail Capacity
/dev/ad0s1b 3145728 32 3145696 0%
/dev/ad2s1b 1048576 32 1048544 0%
Total 4194304 64 4194240 0%
/tmp's space allocation (after reboot) is as follows:
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/md0 2026030 3552 1860396 0% /tmp
Note, that it is supposed to hold 2Gb, but was filled up and paniced holding
about 300Mb... Probably, because it is created with ``-M'' by default -- but
it is not supposed to panic anyway!
Please, advise. Thanks!
-mi
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