The branch main has been updated by erj: URL: https://cgit.FreeBSD.org/src/commit/?id=a52f23f4c49e4766fb9eb0bf460cc83c5f63f17d
commit a52f23f4c49e4766fb9eb0bf460cc83c5f63f17d Author: Eric Joyner <[email protected]> AuthorDate: 2023-07-19 22:40:46 +0000 Commit: Eric Joyner <[email protected]> CommitDate: 2023-07-19 22:51:26 +0000 iflib: Unlock ctx lock around call to ether_ifattach() Panic occurs during loading driver using kldload. It exists since netlink is enabled. There is problem with double locking ctx. This fix allows to call ether_ifattach() without locked ctx. Signed-off-by: Eric Joyner <[email protected]> PR: 271768 Reviewed by: erj@, jhb@ MFC after: 1 day Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D40557 --- sys/net/iflib.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sys/net/iflib.c b/sys/net/iflib.c index d056570d9a99..9f433481afda 100644 --- a/sys/net/iflib.c +++ b/sys/net/iflib.c @@ -5386,7 +5386,13 @@ iflib_device_register(device_t dev, void *sc, if_shared_ctx_t sctx, if_ctx_t *ct goto fail_queues; } + /* + * It prevents a double-locking panic with iflib_media_status when + * the driver loads. + */ + CTX_UNLOCK(ctx); ether_ifattach(ctx->ifc_ifp, ctx->ifc_mac.octet); + CTX_LOCK(ctx); if ((err = IFDI_ATTACH_POST(ctx)) != 0) { device_printf(dev, "IFDI_ATTACH_POST failed %d\n", err);
