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| author | Thomas Meyer <thomas@m3y3r.de> | 2015-03-28 09:59:46 +0100 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2015-04-13 21:17:44 +0200 |
| commit | 33bbc3065414722065a20cbdbeaf352173e72f39 (patch) | |
| tree | f4cf1b3df0f7a23f80a9d14129ec8f8c1f14ad19 /arch/um/os-Linux | |
| parent | 04a418495e0852263d77c4fb82adf470feaafef3 (diff) | |
| download | linux-0-day-33bbc3065414722065a20cbdbeaf352173e72f39.tar.gz linux-0-day-33bbc3065414722065a20cbdbeaf352173e72f39.tar.xz | |
um: Move uml_postsetup in the init_thread stack
atomic_notifier_chain_register() and uml_postsetup() do call kernel code
that rely on the "current" kernel macro and a valid task_struct resp.
thread_info struct. Give those functions a valid stack by moving
uml_postsetup() in the init_thread stack. This moves enables a panic()
call in this early code to generate a valid stacktrace, instead of
crashing.
E.g. when an UML kernel is started with an initrd but too few physical
memory the panic() call get's actually processed.
Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/os-Linux')
| -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 50ebeae5cbb3e..7a9777570a62c 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -586,7 +586,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf) n = setjmp(initial_jmpbuf); switch (n) { case INIT_JMP_NEW_THREAD: - (*switch_buf)[0].JB_IP = (unsigned long) new_thread_handler; + (*switch_buf)[0].JB_IP = (unsigned long) uml_finishsetup; (*switch_buf)[0].JB_SP = (unsigned long) stack + UM_THREAD_SIZE - sizeof(void *); break; |