Re: git-commit fatal: Out of memory? mmap failed: Bad file descriptor

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Linus Torvalds wrote:
> 
> On Mon, 14 Jan 2008, Brandon Casey wrote:
>> To reiterate, I only have problems with the builtin-commit,
>> i.e. 1.5.4.*, the 1.5.3.* series works correctly. Of course
>> if this is a memory corruption issue, then it could just be
>> that the pattern of memory accesses in 1.5.3 does not tweak
>> the problem.
> 
> Can you do an strace of the failure case and put it up on some public 
> place (it's likely going to be too big to send as email)?

I did the strace. Below is the last screenful of lines.

Do you have a suggestion for a public place to upload? I do not have
one of my own, and I've never used any of the 'free' services. The
strace log is about 8.5MB, compressed to about 500K.

$ git --version
git version 1.5.4.rc3.11.g4e67

Not that it's important, but looks like the file descriptor that
is closed too soon is 3. I got 6 when running under gdb. This is
also using the latest version of git. The results are the same
with either version (including the fd#) so I just used this one.

Junio C Hamano wrote:
> What platform is this on?

$ cat /etc/redhat-release
CentOS release 4.5 (Final)

i686

> Does it reliably reproduce for any commit in the repository, or
> reliably reproduce for one particular commit, or sometimes
> reprooduce for one particular commit?

Reliably for one particular commit.

Additional commits on top of this commit complete successfully.

If this commit is amended without error by amending with '-C HEAD'
or by using a 1.5.3 version, then additional amends or commits
will not produce the error.

-brandon


16170 mmap2(NULL, 417, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb1699000
16170 close(3)                          = 0
16170 munmap(0xb1699000, 417)           = 0
16170 stat64("/home/casey/auto_v3.5/src_temp2/.git/objects/67/981a61208756cf4973
7ec065e7bc0d7ff1a89d", {st_mode=S_IFREG|0444, st_size=417, ...}) = 0
16170 open("/home/casey/auto_v3.5/src_temp2/.git/objects/67/981a61208756cf49737e
c065e7bc0d7ff1a89d", O_RDONLY|O_LARGEFILE) = 3
16170 mmap2(NULL, 417, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb1699000
16170 close(3)                          = 0
16170 munmap(0xb1699000, 417)           = 0
16170 stat64("/home/casey/auto_v3.5/src_temp2/.git/objects/4e/7c1178482f4b3c52e8
afce15db3bc8419530d2", {st_mode=S_IFREG|0444, st_size=417, ...}) = 0
16170 open("/home/casey/auto_v3.5/src_temp2/.git/objects/4e/7c1178482f4b3c52e8af
ce15db3bc8419530d2", O_RDONLY|O_LARGEFILE) = 3
16170 mmap2(NULL, 417, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb1699000
16170 close(3)                          = 0
16170 munmap(0xb1699000, 417)           = 0
16170 stat64("/home/casey/auto_v3.5/src_temp2/.git/objects/02/3777b3c0e5f7697deb
2ce738c6b38b1ec2b17c", {st_mode=S_IFREG|0444, st_size=417, ...}) = 0
16170 open("/home/casey/auto_v3.5/src_temp2/.git/objects/02/3777b3c0e5f7697deb2c
e738c6b38b1ec2b17c", O_RDONLY|O_LARGEFILE) = 3
16170 mmap2(NULL, 417, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb1699000
16170 close(3)                          = 0
16170 munmap(0xb1699000, 417)           = 0
16170 mmap2(NULL, 996168, PROT_READ, MAP_PRIVATE, 3, 0) = -1 EBADF (Bad file des
criptor)
16170 munmap(0xb56bd000, 33554432)      = 0
16170 mmap2(NULL, 996168, PROT_READ, MAP_PRIVATE, 3, 0) = -1 EBADF (Bad file des
criptor)
16170 write(2, "fatal: Out of memory? mmap faile"..., 55) = 55
16170 write(1, "Created commit ", 15)   = 15
16170 exit_group(128)                   = ?

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