Opened 15 years ago
Closed 8 years ago
#4157 closed bug (fixed)
File Descriptor Disconnect Handling Broken
| Reported by: | bonefish | Owned by: | axeld |
|---|---|---|---|
| Priority: | high | Milestone: | R1/beta1 |
| Component: | System/Kernel | Version: | R1/Development |
| Keywords: | vfs fd | Cc: | |
| Blocked By: | Blocking: | ||
| Platform: | All |
Description
The disconnect handling for file descriptors has several issues:
- Disconnected file_descriptors are leaked (put_fd() sets the ref_count to -1).
- There are race conditions, particularly in put_fd().
- Disconnected file descriptors can be dup()ed and copied on fork(), messing with the mangled ref_count.
Change History (11)
follow-up: 2 comment:1 by , 15 years ago
comment:2 by , 15 years ago
comment:3 by , 15 years ago
| Milestone: | R1/alpha1 → R1/alpha2 |
|---|
comment:6 by , 13 years ago
| Milestone: | R1/alpha3 → R1/beta1 |
|---|---|
| Version: | R1/pre-alpha1 → R1/Development |
sliding this one out to R1/beta1.
comment:7 by , 10 years ago
Have there been any improvements in the interim?
Could this be moved to beta2 ?
comment:8 by , 9 years ago
Should be fixed with hrev49631. I'd feel better closing this bug if someone else could review the changes, though.
comment:9 by , 9 years ago
FWIW... We were seeing this with increasing frequency back when our reference hrev was 49137 (up to once a week towards the end!), but we didn't get a single instance of this since switching over to 49856.
comment:10 by , 8 years ago
Sounds like this one might be fixed but should be one or two more reviews look it over and determine if we can close this one? @bonefish @mmlr can either of you weigh in on this one?
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Could this be the cause of what I've experienced in bug #2381 ?