diff options
| author | Lepton Wu <ytht.net@gmail.com> | 2007-10-16 01:27:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-16 09:43:09 -0700 |
| commit | a24864a1d52a97e345a6bd4862a057f98364d098 (patch) | |
| tree | a1c07cfa857d818d4a58217fdec40d765d349a4f /arch/um/os-Linux/skas | |
| parent | cb8fa61c2b8b29d422d7310f064d60022f18f89b (diff) | |
uml: definitively kill subprocesses on panic
In a stock 2.6.22.6 kernel, poweroff a user mode linux guest (2.6.22.6 running
in skas0 mode) will halt the host linux. I think the reason is the kernel
thread abort because of a bug. Then the sys_reboot in process of user mode
linux guest is not trapped by the user mode linux kernel and is executed by
host. I think it is better to make sure all of our children process to quit
when user mode linux kernel abort.
[ jdike - the kernel process needs to ignore SIGTERM, plus the waitpid/kill
loop is needed to make sure that all of our children are dead before the
kernel exits ]
Signed-off-by: Lepton Wu <ytht.net@gmail.com>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/skas')
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index e60d6e6c5a5..d77c81d7068 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -177,7 +177,7 @@ static int userspace_tramp(void *stack) ptrace(PTRACE_TRACEME, 0, 0, 0); - init_new_thread_signals(); + signal(SIGTERM, SIG_DFL); err = set_interval(); if (err) panic("userspace_tramp - setting timer failed, errno = %d\n", |