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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-23 03:08:50 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-23 03:08:50 +0100 |
| commit | b4642c109f9bbf62b2ee10babf5c4221c48480aa (patch) | |
| tree | e62e8f6132377c687517ffddd79bbf7c6ffb9010 /kernel | |
| parent | Merge tag 'xfs-4.11-merge-7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux (diff) | |
| parent | seccomp: Only dump core when single-threaded (diff) | |
| download | linux-b4642c109f9bbf62b2ee10babf5c4221c48480aa.tar.xz linux-b4642c109f9bbf62b2ee10babf5c4221c48480aa.zip | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull seccomp fix from James Morris:
"A fix for a regression in the seccomp code (it was supposed to be in
the first pull req but I had it queued in the wrong branch)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
seccomp: Only dump core when single-threaded
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/seccomp.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/kernel/seccomp.c b/kernel/seccomp.c index f8f88ebcb3ba..e15185c28de5 100644 --- a/kernel/seccomp.c +++ b/kernel/seccomp.c @@ -643,11 +643,14 @@ static int __seccomp_filter(int this_syscall, const struct seccomp_data *sd, default: { siginfo_t info; audit_seccomp(this_syscall, SIGSYS, action); - /* Show the original registers in the dump. */ - syscall_rollback(current, task_pt_regs(current)); - /* Trigger a manual coredump since do_exit skips it. */ - seccomp_init_siginfo(&info, this_syscall, data); - do_coredump(&info); + /* Dump core only if this is the last remaining thread. */ + if (get_nr_threads(current) == 1) { + /* Show the original registers in the dump. */ + syscall_rollback(current, task_pt_regs(current)); + /* Trigger a manual coredump since do_exit skips it. */ + seccomp_init_siginfo(&info, this_syscall, data); + do_coredump(&info); + } do_exit(SIGSYS); } } |