git: e894e3adb206 - main - cxgbei: Explicitly clear the page pode reservation pointer after freeing it.

[John Baldwin]

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=e894e3adb206815c2acff17a4011becb166c2f66

commit e894e3adb206815c2acff17a4011becb166c2f66
Author:     John Baldwin <jhb at FreeBSD.org>
AuthorDate: 2021-05-14 19:20:51 +0000
Commit:     John Baldwin <jhb at FreeBSD.org>
CommitDate: 2021-05-14 19:21:34 +0000

    cxgbei: Explicitly clear the page pode reservation pointer after freeing it.
    
    A single union ctl_io can be reused across multiple transfers (in
    particular by the ramdisk backend).  On a reuse, the reservation
    pointer would retain its value from the previous transfer tripping an
    assertion.
    
    Reported by:    Jithesh Arakkan @ Chelsio
    Sponsored by:   Chelsio Communications
    
    Differential Revision:  https://reviews.freebsd.org/D29939
---
 sys/dev/cxgbe/cxgbei/icl_cxgbei.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c
index e3dc05645732..7f638c96483a 100644
--- a/sys/dev/cxgbe/cxgbei/icl_cxgbei.c
+++ b/sys/dev/cxgbe/cxgbei/icl_cxgbei.c
@@ -1162,6 +1162,7 @@ icl_cxgbei_conn_transfer_done(struct icl_conn *ic, void *arg)
 
 		t4_free_page_pods(prsv);
 		uma_zfree(prsv_zone, prsv);
+		io_to_ppod_reservation(ctsio) = NULL;
 	}
 }