Hang after running out of memory
Mike Hunter
mhunter at ack.Berkeley.EDU
Fri Apr 25 10:57:32 PDT 2003
On Apr 20, "Craig Reyenga" wrote:
> I have been following the thread here on current@ about problems occuring
> when running out of memory, so I wrote a C++ program that simply mallocs
> about 144M of memory. My system has 256MB+491MB(swap). I can run the system
> out of memory just fine by running multiple copies of the program, and the
> kernel does kill one if I run too many, however shortly after, when I go to
> killall the programs the system hangs, (although pings, etc manage to
> survive for a few mintues longer) and I have no choice but to press the
> reset button. While it is hung, I _can_ press ^T and it shows the load,
> which increases by 1 about every 45 seconds:
>
> load: 11.58 cmd: killall 20125 [running] 0.00u 0.00s 11% 292k
> load: 12.27 cmd: killall 20125 [running] 0.00u 0.00s 12% 292k
>
> Also, the console is just as unusable as any other terminal. I'm not sure
> what is going on, but this is reproducible, and I can post more info upon
> request.
As noted in another email, I've been seeing strange behavior from a
machine that has run out of memory. I have not cvsup'd for a few weeks,
so if there's something that could have fixed this problem since then,
please accept my apologies for the noise.
This is some output from attempting to flow-cat a 1.2 gig file.
More info available upon request.
Thanks,
Mike
%limits
Resource limits (current):
cputime infinity secs
filesize infinity kb
datasize 2097152 kb
stacksize 65536 kb
coredumpsize infinity kb
memoryuse infinity kb
memorylocked infinity kb
maxprocesses 7390
openfiles 14781
sbsize infinity bytes
vmemoryuse infinity kb
%uname -a
FreeBSD mispwoso.net.berkeley.edu 5.0-CURRENT FreeBSD 5.0-CURRENT #19: Tue
Apr 8 16:05:04 PDT 2003 root at mispwoso.net.berkeley.edu:/usr/obj/usr/src/sys/mispwoso i386
%ktrace flow-cat 2003-04-01.flow
flow-cat: mmap(): Cannot allocate memory
flow-cat: ftio_init(): failed
%kdump -f ktrace.out
25399 ktrace RET ktrace 0
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/sbin/flow-cat"
25399 ktrace RET execve -1 errno 2 No such file or directory
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/bin/flow-cat"
25399 ktrace RET execve -1 errno 2 No such file or directory
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/usr/sbin/flow-cat"
25399 ktrace RET execve -1 errno 2 No such file or directory
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/usr/bin/flow-cat"
25399 ktrace RET execve -1 errno 2 No such file or directory
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/usr/games/flow-cat"
25399 ktrace RET execve -1 errno 2 No such file or directory
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/usr/local/sbin/flow-cat"
25399 ktrace RET execve -1 errno 2 No such file or directory
25399 ktrace CALL execve(0xbfbff5a0,0xbfbffab8,0xbfbffac4)
25399 ktrace NAMI "/usr/local/bin/flow-cat"
25399 ktrace NAMI "/usr/libexec/ld-elf.so.1"
25399 flow-cat RET execve 0
25399 flow-cat CALL mmap(0,0xb88,0x3,0x1000,0xffffffff,0,0,0)
25399 flow-cat RET mmap -2012782592/0x88076000
25399 flow-cat CALL munmap(0x88076000,0xb88)
25399 flow-cat RET munmap 0
25399 flow-cat CALL __sysctl(0xbfbff880,0x2,0x88074728,0xbfbff87c,0,0)
25399 flow-cat RET __sysctl 0
25399 flow-cat CALL mmap(0,0x8000,0x3,0x1002,0xffffffff,0,0,0)
25399 flow-cat RET mmap -2012782592/0x88076000
25399 flow-cat CALL geteuid
25399 flow-cat RET geteuid 1001/0x3e9
25399 flow-cat CALL getuid
25399 flow-cat RET getuid 1001/0x3e9
25399 flow-cat CALL getegid
25399 flow-cat RET getegid 20/0x14
25399 flow-cat CALL getgid
25399 flow-cat RET getgid 20/0x14
25399 flow-cat CALL open(0x88070a83,0,0xbfbff928)
25399 flow-cat NAMI "/var/run/ld-elf.so.hints"
25399 flow-cat RET open 3
25399 flow-cat CALL read(0x3,0xbfbff918,0x80)
25399 flow-cat GIO fd 3 read 128 bytes
"Ehnt\^A\0\0\0\M^@\0\0\0007\0\0\0\0\0\0\0006\0\0\0\0\0\0\0\0\0\0\0\0\0\
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"
25399 flow-cat RET read 128/0x80
25399 flow-cat CALL lseek(0x3,0,0x80,0,0)
25399 flow-cat RET lseek 128/0x80
25399 flow-cat CALL read(0x3,0x8807a000,0x37)
25399 flow-cat GIO fd 3 read 55 bytes
"/usr/lib:/usr/lib/compat:/usr/X11R6/lib:/usr/local/lib\0"
25399 flow-cat RET read 55/0x37
25399 flow-cat CALL close(0x3)
25399 flow-cat RET close 0
25399 flow-cat CALL access(0x8807b000,0)
25399 flow-cat NAMI "/usr/lib/libz.so.2"
25399 flow-cat RET access 0
25399 flow-cat CALL open(0x88077020,0,0xbfbff988)
25399 flow-cat NAMI "/usr/lib/libz.so.2"
25399 flow-cat RET open 3
25399 flow-cat CALL fstat(0x3,0xbfbff968)
25399 flow-cat RET fstat 0
25399 flow-cat CALL read(0x3,0xbfbfe928,0x1000)
25399 flow-cat GIO fd 3 read 4096 bytes
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\M-|,\0\0006\^A\0\0\^R\0\b\0M\0\0\0\0\0\0\0\0\0\0\0 \0\0\0\^Y\^D\0\0\
\^\q\0\0\M-:\0\0\0\^R\0\b\0\M-q\^A\0\0L<\0\0\M-G\0\0\0\^R\0\b\0\^E\^B\
\0\0P*\0\0\^[\0\0\0\^R\0\b\0\M-|\^A\0\0\M-d#\0\0^\0\0\0\^R\0\b\0q\^C\0\
\0004l\0\0\M-5\^B\0\0\^R\0\b\0J\^B\0\0\0\0\0\0\0\0\0\0\^P\0\0\0\0_DYNA\
MIC\0_GLOBAL_OFFSET_TABLE_\0_fini\0__cxa_finalize\0__deregister_frame_\
info\0__register_frame_info\0_Jv_RegisterClasses\0gzopen\0gzread\0gzcl\
ose\0gzwrite\0funopen\0uncompress\0inflate\0inflateInit_\0inflateEnd\0\
strcpy\0gzflush\0deflate\0gzgetc\0gzerror\0memcpy\0gzsetparams\0malloc\
\0vsnprintf\0fflush\0gztell\0fprintf\0strcat\0fseek\0crc32\0gzseek\0fe\
rror\0gzputs\0__error\0deflateInit2_\0gzdopen\0inflateReset\0fdopen\0f\
read\0fopen\0memset\0ftell\0fclose\0z_errmsg\0fputc\0gzputc\0gzeof\0fw\
rite\0gzgets\0deflateParams\0gzrewind\0inflateInit2_\0deflateEnd\0gzpr\
intf\0get_crc_table\0deflateInit_\0compress2\0inflateSyncPoint\0inflat\
e_blocks_free\0adler32\0zcfree\0inflateSync\0zcalloc\0inflate_blocks\0\
inflate_blocks_reset\0inflate_blocks_sync_point\0inflate_set_dictionar\
y\0inflateSetDictionary\0inflate_blocks_new\0_tr_flush_block\0_length_\
code\0deflateSetDictionary\0_tr_stored_block\0deflate_copyright\0_dist\
_code\0deflateReset\0deflateCopy\0_tr_init\0_tr_align\0inflate_flush\0\
inflate_mask\0inflate_trees_fixed\0inflate_codes_new\0inflate_trees_bi\
ts\0inflate_codes\0inflate_trees_dynamic\0inflate_codes_free\0zlibVers\
ion\0zError\0_tr_tally\0inflate_fast\0inflate_copyright\0_e"
25399 flow-cat RET read 4096/0x1000
25399 flow-cat CALL mmap(0,0xd000,0x5,0x20002,0x3,0,0,0)
25399 flow-cat RET mmap -2012749824/0x8807e000
25399 flow-cat CALL mprotect(0x88088000,0x1000,0x7)
25399 flow-cat RET mprotect 0
25399 flow-cat CALL mprotect(0x88088000,0x1000,0x5)
25399 flow-cat RET mprotect 0
25399 flow-cat CALL mmap(0x88089000,0x2000,0x3,0x12,0x3,0,0xa000,0)
25399 flow-cat RET mmap -2012704768/0x88089000
25399 flow-cat CALL close(0x3)
25399 flow-cat RET close 0
25399 flow-cat CALL access(0x8807b000,0)
25399 flow-cat NAMI "/usr/lib/libc.so.5"
25399 flow-cat RET access 0
25399 flow-cat CALL open(0x88077040,0,0xbfbff988)
25399 flow-cat NAMI "/usr/lib/libc.so.5"
25399 flow-cat RET open 3
25399 flow-cat CALL fstat(0x3,0xbfbff968)
25399 flow-cat RET fstat 0
25399 flow-cat CALL read(0x3,0xbfbfe928,0x1000)
25399 flow-cat GIO fd 3 read 4096 bytes
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\M^P\^B\0\0!\^C\0\0z \0\0\M-V\^C\0\0\^[\a\0\0> \0\0\0\0\0\0\
\M^A\0\0\0P\^E\0\0\M-G \0\0\^V \0\0\M^F \0\0L\a\0\0\0\0\0\0\
\M^G \0\0\0\0\0\0p\^F\0\0\^S\a\0\0\0\0\0\0\M-F\a\0\0B\a\0\0t\^B\0\0\
\0\0\0\0\0\0\0\0'\^E\0\0j\b\0\0\^_\^A\0\0\M-h\b\0\0\0\0\0\0s\a\0\0_\0\
\0\0\M-,\a\0\0$\a\0\0\M-\\^E\0\0\M-}\a\0\0\^C \0\0R\^E\0\0\0\0\0\0;\
\^A\0\0\M-b\0\0\0\M-4\^C\0\0\0\0\0\0\0\0\0\0\M-}\^D\0\0\0\0\0\0\^O\
\0\0
\a\0\0\^X\b\0\0\M-+\^E\0\0R\^A\0\0\M-o\b\0\0
\^E\0\0\M-Y\b\0\0\0\0\0\0\240\b\0\0\0\0\0\0\M^\\^B\0\0*\^F\0\0\0\0\0\0\
\M-=\^F\0\0\M-g\b\0\0$ \0\0\0\0\0\0\M-V\b\0\0(
\0\0| \0\0\0\0\0\0C\b\0\0\M->\^B\0\0\0\0\0\0\0\0\0\0006\a\0\0\^_
\0\0\0\0\0\0\M-Z\^C\0\0\^A \0\0\^F\^D\0\0\0\0\0\0\0\0\0\0W\^D\0\
\0001\^D\0\0\M-a\^F\0\0X\^B\0\0\M-e \0\0\M-V\^A\0\0\^X\a\0\0\^A\^F\
\0\0\^\ \0\0\^U \0\0\M-C\^D\0\0\M-(\^A\0\0\M-S\^D\0\0\0\0\0\0\0\0\0\0\
\M-]\^F\0\0\0\0\0\0\M-5\^A\0\0\M-:\0\0\0\0\0\0\0+\0\0\0Z\0\0\0\0\0\0\0\
\M-U\^A\0\0\a\a\0\0m\b\0\0\^E\a\0\0\M-R\^F\0\0\M-t\^C\0\0\M-@\a\0\0\0\
\0\0\0V \0\0\M--\^F\0\0\0\^E\0\0\M-d \0\0\0\0\0\0Z \0\0\M-*\^E\0\
\0\M-D\^F\0\0+
\0\0\M-J\^C\0\0\M^K\a\0\0\0\0\0\0\M-K\^A\0\0\0\0\0\0\0\0\0\0\^C\^C\0\0\
\M-L\a\0\0\M^E\^F\0\0v\0\0\0\a \0\0\M^V\a\0\0\M^C\^E\0\0\^R \0\0\0\
\0\0\0\0\0\0\0\0\0\0\0>\a\0\0\M-$\b\0\0\0\0\0\0\0\0\0\0\M-=\^C\0\0\0\0\
\0\0\0\0\0\0\0\0\0\0\f \0\0=\^F\0\0\0\0\0\0002\b\0\0\M-* \0\0\
\M^@\b\0\0\0\0\0\0z\^E\0\0\M-X\^E\0\0\0\0\0\0\0\0\0\0\0\0\0\0\M-@\^C\0\
\0:\^E\0\0\M^E\b\0\0\M--\^D\0\0T \0\0G\a\0\0\M-z \0\0>\b\0\0\
\M-j\a\0\0\M-0\^E\0\0\M-q \0\0\0\0\0\0\M^^\a\0\0\M-W\^D\0\0\0\0\
\0\0\M-{\^F\0\0\M-S\^B\0\0\0\0\0\0\M-m\^F\0\0\M^V \0\0\0\0\0\0\0\
\0\0\0P\^C\0\0\0\0\0\0\M-u\^B\0\0\M^M \0\0\\\^B\0\0\M-, \0\0\
\M-c\^C\0\0\M-.\^C\0\0\0\0\0\0(\a\0\0\M^X\a\0\0\M-|\^D\0\0\0\0\0\0Q\a\
\0\0/\^F\0\0\M-&\b\0\0\M-L\b\0\0\M^E\^D\0\0\0\0\0\0\M-"\a\0\0Q\b\0\0\0\
\0\0\0f\^B\0\0\v\a\0\0\0 \0\0\0\0\0\0\0\0\0\0\M-8\^C\0\0S\b\0\0\
\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\M-;\a\0\0\M^P\^D\0\0\M-W\^C\0\
\0\M-f \0\0\0\0\0\0\M-9\a\0\0\0\0\0\0\M-> \0\0*\^D\0\0\0\0\0\0\
\^A\a\0\0\0\0\0\0\0\0\0\0K\^C\0\0"
25399 flow-cat RET read 4096/0x1000
25399 flow-cat CALL mmap(0,0xc5000,0x5,0x20002,0x3,0,0,0)
25399 flow-cat RET mmap -2012696576/0x8808b000
25399 flow-cat CALL mprotect(0x88138000,0x1000,0x7)
25399 flow-cat RET mprotect 0
25399 flow-cat CALL mprotect(0x88138000,0x1000,0x5)
25399 flow-cat RET mprotect 0
25399 flow-cat CALL mmap(0x88139000,0x5000,0x3,0x12,0x3,0,0xad000,0)
25399 flow-cat RET mmap -2011983872/0x88139000
25399 flow-cat CALL mmap(0x8813e000,0x12000,0x3,0x1012,0xffffffff,0,0,0)
25399 flow-cat RET mmap -2011963392/0x8813e000
25399 flow-cat CALL close(0x3)
25399 flow-cat RET close 0
25399 flow-cat CALL mmap(0,0x298,0x3,0x1000,0xffffffff,0,0,0)
25399 flow-cat RET mmap -2011889664/0x88150000
25399 flow-cat CALL munmap(0x88150000,0x298)
25399 flow-cat RET munmap 0
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