| Summary: | posix_spawn{p} should not call exit | ||
|---|---|---|---|
| Product: | glibc | Reporter: | Adhemerval Zanella <adhemerval.zanella> |
| Component: | libc | Assignee: | Adhemerval Zanella <adhemerval.zanella> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | drepper.fsp |
| Priority: | P2 | Flags: | fweimer:
security-
|
| Version: | 2.24 | ||
| Target Milestone: | 2.24 | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
| Bug Depends on: | |||
| Bug Blocks: | 10354, 14750, 18433 | ||
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3e040a2d5f59c5494910bd6451b3dcb69221a047
commit 3e040a2d5f59c5494910bd6451b3dcb69221a047
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon May 30 10:04:47 2016 -0300
posix: Call _exit in failure case for posix_spawn{p} (BZ#20178)
This patch call _exit instead of exit in failure case for the spawned
child in Linux posix_spawn{p} implementation.
Tested on x86_64.
[BZ #20178]
* sysdeps/unix/sysv/linux/spawni.c (__spawni_child): Call _exit
on failure instead of exit.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
sysdeps/unix/sysv/linux/spawni.c | 2 +-
2 files changed, 7 insertions(+), 1 deletions(-)
|
The new posix_spawn{p} implementation [1] call exit on failure case where it should call _exit. Although POSIX allows posix_spawn to call atfork handlers, it introduces opportunities for atfork-related race conditions and add performance overhead from handler calling (BZ#14499). [1] Commit 9ff72da471a509a8c19791efe469f47fa6977410