I am building a wrapper around fgets, and fighting crashes for no reason I can explain.
I have stripped it down as far as I can and it still crashes.
The first inexplicable thing happens during fgets(), which fails for no good reason. perror prints "EOF: Success". The loop quits early due to this mysterious failure, and when wrap_free() is called, the program dies with "*** Error in `./a.out': munmap_chunk(): invalid pointer: 0x0000000000c8f030 ***", where c8f030 was a valid pointer to wrap.
This does not happen at all when buf[] doesn't reside inside the structure. Everything is happy in that case. Clearly an overflow is happening, but I have no idea why or where.
I am not overflowing the bounds of the array. I checked that, and 100 bytes can't be overflowing 4K anyway.
I am definitely allocating enough memory. sizeof(wrap) is larger than 4096 bytes.
The values of wrap and wrap->fp are not being corrupted.
No mysterious properties of ungetc are crashing it. It still dies without it.
Hi,
I need help, one of our servers is down, and all data in that Server are critical:
The Scenario:
-------------
I have a computer with the next architecture:
architecture=IA32
bus_types=PCI2.10,ISA,PnP1.0
hostname=xxx.xxx.xxx (the real name is hidden)
hw_provider=Generic AT... (2 Replies)
I am supporting a server running Solaris 4.3.The server is not having ddicated system administrator and i am requred to do minor maintenance tasks.l From few days, The server is automatically crashing and i just reboot the server. I also do not see anything in /var/adm/messages that can give an... (1 Reply)
Hi, First post. I am not to experienced in the Unix or HP-UX world but I'm learning.
We have some problem with a HP rx4640 server. During boot it states the following:
Checking for LVM volume groups and Activating (if any exist)
Volume group "/dev/vg00" has been successfully changed.
vgchange:... (7 Replies)
I installed solaris 5.9 on a machine SunBlade100 512Mo of RAM and 18Go of hard disc, after the installation I have remark that the machine starts again after 10mn with 15 mn of walk, I downloaded and installed the last patchs on the machine but the poblème persists. someone can help me and tell me... (0 Replies)
hi friends,
i know that when there is a crash then that memory image is
put into /var/adm/crash
but if the system hangs up and if i have access to console of
that machine then how can i take the crash dump manully.
thanks (2 Replies)
Hi,
First of all, thanks for your help. I have downloaded freeBSD to study unix
I'm here again 'cause my HP-UX 10.x has "broken". It raise this error:
----------------------------------------------------
Diagnostic System warning:
= 0x1f005000 is POWERFAILED The diagnostic logging... (1 Reply)
Our SUn Solaris Server has crashed second time in 2 days, reason is not known , we are trying to determine what could have gone wrong, any ideas, the power supply seems to be fine, there is no response from keyboard,monitor etc and we had to do a hot boot yesterday..
Any suggestions what could be... (9 Replies)
We have a Unix system with two hard drives. When we tried to access it this morning it had frozen, and when we rebooted it couldn't find one of the hard drives, and had quite a few bad data blocks on the other. Of course we fear the worst: that the drive is completely gone, but were not sure how... (1 Reply)