diff options
| author |   mickey <mickey@openbsd.org> | 2003-02-18 18:50:54 +0000 |
|---|---|---|
| committer | mickey <mickey@openbsd.org> | 2003-02-18 18:50:54 +0000 |
| commit | 82a6945b11db7f9e802f8a04a22b39b023fd0c2f (patch) | |
| tree | d7d074f47497a1f1b1ca075987940e49b517c7dd /sys/uvm/uvm_unix.c | |
| parent | missed in lzs addition: allow LZS as an comp type (diff) | |
| download | wireguard-openbsd-82a6945b11db7f9e802f8a04a22b39b023fd0c2f.tar.xz wireguard-openbsd-82a6945b11db7f9e802f8a04a22b39b023fd0c2f.zip | |
fix the way stack is written into the core file on the upward growing stack machines. the other case is not affected. miod@ deraadt@ ok
Diffstat (limited to 'sys/uvm/uvm_unix.c')
| -rw-r--r-- | sys/uvm/uvm_unix.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/sys/uvm/uvm_unix.c b/sys/uvm/uvm_unix.c index 50311c3b11b..6337a31f58a 100644 --- a/sys/uvm/uvm_unix.c +++ b/sys/uvm/uvm_unix.c @@ -1,4 +1,4 @@ -/* $OpenBSD: uvm_unix.c,v 1.24 2002/12/20 03:01:00 mickey Exp $ */ +/* $OpenBSD: uvm_unix.c,v 1.25 2003/02/18 18:50:54 mickey Exp $ */ /* $NetBSD: uvm_unix.c,v 1.18 2000/09/13 15:00:25 thorpej Exp $ */ /* @@ -188,13 +188,12 @@ uvm_coredump(p, vp, cred, chdr) struct vmspace *vm = p->p_vmspace; vm_map_t map = &vm->vm_map; vm_map_entry_t entry; - vaddr_t start, end, maxstack; + vaddr_t start, end; struct coreseg cseg; off_t offset; int flag, error = 0; offset = chdr->c_hdrsize + chdr->c_seghdrsize + chdr->c_cpusize; - maxstack = trunc_page(USRSTACK - ctob(vm->vm_ssize)); for (entry = map->header.next; entry != &map->header; entry = entry->next) { @@ -218,14 +217,18 @@ uvm_coredump(p, vp, cred, chdr) #ifdef MACHINE_STACK_GROWS_UP if (start >= USRSTACK) { + end = round_page(USRSTACK + ctob(vm->vm_ssize)); + if (start >= end) + continue; start = USRSTACK; #else if (start >= (vaddr_t)vm->vm_maxsaddr) { start = trunc_page(USRSTACK - ctob(vm->vm_ssize)); -#endif - flag = CORE_STACK; + if (start >= end) continue; +#endif + flag = CORE_STACK; } else flag = CORE_DATA; |