Opened 15 years ago
Closed 15 years ago
#4326 closed bug (fixed)
Crash in block cache when unmounting partition.
| Reported by: | bga | Owned by: | axeld |
|---|---|---|---|
| Priority: | high | Milestone: | R1 |
| Component: | System/Kernel | Version: | R1/pre-alpha1 |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | All |
Description
I was doing a new Haiku installation and this involved copying hundreds of thousands of files from the old partition to the new one. My first attempt to do the copy resulted in a crash but I have a USB keyboard so I could not get a stack crawl. I reformatted the partition and tried again taking care to intentionally enter KDL once so the keyboard would be enabled if I ended up in KDL again.
Contrary to what I expected, the copy concluded without problems. I opened a terminal window and ran sync just in case. Then I tried to unmount the destination partition (the one I copied the data to) and got into KDL with a crash in the block cache.
GCC2 hrev32639.
Attachments (1)
Change History (5)
by , 15 years ago
comment:1 by , 15 years ago
comment:2 by , 15 years ago
It may be so, but the way to get at the bug was different, which may shed some more light. But yes, both seem to be crashes at heap_free().
comment:3 by , 15 years ago
That the crash is in heap_free() just indicates a memory corruption; the relation of the bugs is that this happened while mounting/unmounting BFS partitions.
comment:4 by , 15 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
From the situation it occured in I gather that a lot of heap memory was freed, leading to empty areas. The area removal kicked in and an additional heap area was deleted, crashing later due to accessing the next pointer stored in the deleted area. Fixed in hrev32951.
This is probably a duplicate of #4223.