If disk has been removed, 'st' and 'info' can be NULL. It causes segfault. 'st' and 'info' should be checked against being NULL before being used. Signed-off-by: Lukasz Dorau <lukasz.dorau@xxxxxxxxx> --- Detail.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/Detail.c b/Detail.c index 17aa516..79b1047 100644 --- a/Detail.c +++ b/Detail.c @@ -430,7 +430,7 @@ int Detail(char *dev, struct context *c) } free_mdstat(ms); - if (st->sb && info->reshape_active) { + if ((st && st->sb) && (info && info->reshape_active)) { #if 0 This is pretty boring printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info->reshape_progress<<9, @@ -596,7 +596,8 @@ This is pretty boring if (spares && c->brief && array.raid_disks) printf(" spares=%d", spares); if (c->brief && st && st->sb) st->ss->brief_detail_super(st); - st->ss->free_super(st); + if (st && st->ss) + st->ss->free_super(st); if (c->brief > 1 && devices) printf("\n devices=%s", devices); if (c->brief) -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html