I think we've seen a segfault on daedalus that can be tracked
down to the fact that the file changes on disk while we
serve the page. So, at the start of the request, we see that
it is X bytes, but when we serve the request via sendfile, it
is changed to Y bytes.
IIRC, FreeBSD is returning EAGAIN from sendfile() in this case -
thats not terribly helpful.
Uh, what can we do? -- justin
(debug_finfo is added by gregames's patch to try to catch this
condition. This is captured right before the assert(0) -
f->r->finfo represents the information retrieved at the beginning
of the request.)
(gdb) print debug_finfo
$1 = {pool = 0x8154010, valid = 7598448, protection = 1604,
filetype = APR_REG, user = 1134, group = 5007, inode = 2055478,
device = 134412, nlink = 1, size = 81920, csize = 581763456366018573,
atime = 1020755764000000, mtime = 1020757320000000,
ctime = 1020757320000000,
fname = 0x815a8b0
"/www/www.apache.org/dist/httpd/binaries/win32/apache_2.0.36-win32-x86-no_ssl.msi",
name = 0x8090044 "�\b\t\b", filehand = 0x812d120}
(gdb) print f->r->finfo
$2 = {pool = 0x8154010, valid = 7598448, protection = 1604,
filetype = APR_REG, user = 1134, group = 5007, inode = 2055478,
device = 134412, nlink = 1, size = 3173888, csize = 0,
atime = 1020755764000000, mtime = 1020755806000000,
ctime = 1020755806000000,
fname = 0x81553b0
"/www/www.apache.org/dist/httpd/binaries/win32/apache_2.0.36-win32-x86-no_ssl.msi",
name = 0x0, filehand = 0x0}
(Note the times)
jerenkrantz@daedalus% ls -l httpd.core.1 /usr/local/apache/corefiles
-rw-r--r-- 1 nobody wheel 1609728 May 7 00:42 httpd.core.1
jerenkrantz@daedalus% ls -l
/www/www.apache.org/dist/httpd/binaries/win32/apache_2.0.36-win32-x86-no_ssl.msi
-rw-rw-r-- 1 wrowe httpd 3173888 May 7 00:42
/www/www.apache.org/dist/httpd/binaries/win32/apache_2.0.36-win32-x86-no_ssl.msi
