diff options
| author | raj <raj@FreeBSD.org> | 2009-04-24 08:57:54 +0000 |
|---|---|---|
| committer | raj <raj@FreeBSD.org> | 2009-04-24 08:57:54 +0000 |
| commit | 9d122f9cbab9d826e0409d7b1934c5ed20f9af86 (patch) | |
| tree | 5bbbd84aac7edd469bdbed3467a582aa85275671 /sys/powerpc/aim | |
| parent | b14076b18586d6cafeb16aadb9824f7df7d967d2 (diff) | |
| download | FreeBSD-src-9d122f9cbab9d826e0409d7b1934c5ed20f9af86.zip FreeBSD-src-9d122f9cbab9d826e0409d7b1934c5ed20f9af86.tar.gz | |
Zero PCB during early AIM PowerPC init.
When memory is not zero'ed by firmware, uninitialized PCB can have bogus
contents, which appear as a saved onfault condition, Altivec context to
restore etc. and lead to corruption/crashes. This commit fixes such issues.
Submitted by: Michal Mazur arg ! semihalf dot com
Tested by: Andreas Tobler andreast-list ! fgznet dot ch
Diffstat (limited to 'sys/powerpc/aim')
| -rw-r--r-- | sys/powerpc/aim/machdep.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/powerpc/aim/machdep.c b/sys/powerpc/aim/machdep.c index fb83e3a..4e8909f 100644 --- a/sys/powerpc/aim/machdep.c +++ b/sys/powerpc/aim/machdep.c @@ -505,6 +505,7 @@ powerpc_init(u_int startkernel, u_int endkernel, u_int basekernel, void *mdp) thread0.td_pcb = (struct pcb *) ((thread0.td_kstack + thread0.td_kstack_pages * PAGE_SIZE - sizeof(struct pcb)) & ~15); + bzero((void *)thread0.td_pcb, sizeof(struct pcb)); pc->pc_curpcb = thread0.td_pcb; /* Initialise the message buffer. */ |
