The guest can leave the pdu->s->migration_blocker exists by attach but not remove a fid. Then if we hot unplug the 9pfs device, the v9fs_reset() just free the fids, but not free the migration_blocker. This will leak a memory leak. This patch avoid this.
Signed-off-by: Li Qiang <liqiang...@360.cn> --- hw/9pfs/9p.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c index 48babce..b55c02d 100644 --- a/hw/9pfs/9p.c +++ b/hw/9pfs/9p.c @@ -548,6 +548,12 @@ static void coroutine_fn virtfs_reset(V9fsPDU *pdu) free_fid(pdu, fidp); } } + + if (pdu->s->migration_blocker) { + migrate_del_blocker(pdu->s->migration_blocker); + error_free(pdu->s->migration_blocker); + pdu->s->migration_blocker = NULL; + } } #define P9_QID_TYPE_DIR 0x80 -- 1.8.3.1