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| author | neel <neel@FreeBSD.org> | 2014-05-30 18:59:37 +0000 |
|---|---|---|
| committer | neel <neel@FreeBSD.org> | 2014-05-30 18:59:37 +0000 |
| commit | aefe217075d85adc7bb877c26e3aa7daa54e0274 (patch) | |
| tree | 70e8393c368be3b39e4b77ce2855dd0f126dc911 | |
| parent | 0b964e71baf2f648ec150259bb531537126dce2c (diff) | |
| download | FreeBSD-src-aefe217075d85adc7bb877c26e3aa7daa54e0274.zip FreeBSD-src-aefe217075d85adc7bb877c26e3aa7daa54e0274.tar.gz | |
Allocate a zeroed LDT.
Failing to do this might result in the LDT appearing to run out of free
descriptors because of random junk in the descriptor's 'sd_type' field.
http://lists.freebsd.org/pipermail/freebsd-amd64/2014-May/016088.html
Reviewed by: kib
MFC after: 2 weeks
| -rw-r--r-- | sys/amd64/amd64/sys_machdep.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/amd64/amd64/sys_machdep.c b/sys/amd64/amd64/sys_machdep.c index 1d9bd4c..a7420b7 100644 --- a/sys/amd64/amd64/sys_machdep.c +++ b/sys/amd64/amd64/sys_machdep.c @@ -462,7 +462,7 @@ user_ldt_alloc(struct proc *p, int force) new_ldt = malloc(sizeof(struct proc_ldt), M_SUBPROC, M_WAITOK); new_ldt->ldt_base = (caddr_t)kmem_malloc(kernel_arena, max_ldt_segment * sizeof(struct user_segment_descriptor), - M_WAITOK); + M_WAITOK | M_ZERO); if (new_ldt->ldt_base == NULL) { FREE(new_ldt, M_SUBPROC); mtx_lock(&dt_lock); |
