In refiltering mode, each sub process inherits bitmap2->fd from parent.
Then they lseek()/read() on the same fd, which means that they interference
with each other.
This breaks the purpose of SPLITTING_FD_BITMAP(i) for each sub process.
Fix it by assigning a sub process dedicated fd to bitmap2->fd.
Signed-off-by: Pingfan Liu <piliu@xxxxxxxxxx>
---
makedumpfile.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/makedumpfile.c b/makedumpfile.c
index d76a435..1dc8640 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -8857,7 +8857,8 @@ write_kdump_pages_and_bitmap_cyclic(struct cache_data *cd_header, struct cache_d
if (info->flag_cyclic) {
if (!prepare_bitmap2_buffer())
return FALSE;
- }
+ } else if (info->flag_refiltering)
+ info->bitmap2->fd = info->fd_bitmap;
/*
* Write pages and bitmap cyclically.
--
2.7.5
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