git: 9f0c0e6eede6 - main - mrsas: Don't leak a stack pointer value in the softc.

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=9f0c0e6eede6aedb60e12888fc9751c40b364dc9

commit 9f0c0e6eede6aedb60e12888fc9751c40b364dc9
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2022-12-21 18:45:26 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2022-12-21 18:45:26 +0000

    mrsas: Don't leak a stack pointer value in the softc.
    
    mrsas_issue_blocked_cmd stores a pointer to an on-stack variable
    in its softc so that the driver can call wakeup() on the correct
    pointer.  Once the loop around tsleep() has finished however, the
    pointer is no longer needed and any further use would be invalid.
    Clear sc->chan to NULL after the loop.
    
    Reported by:    GCC -Wdangling-pointer
    Differential Revision:  https://reviews.freebsd.org/D37628
---
 sys/dev/mrsas/mrsas.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/dev/mrsas/mrsas.c b/sys/dev/mrsas/mrsas.c
index 6247cc2b142c..2f531bb44674 100644
--- a/sys/dev/mrsas/mrsas.c
+++ b/sys/dev/mrsas/mrsas.c
@@ -3980,6 +3980,7 @@ mrsas_issue_blocked_cmd(struct mrsas_softc *sc, struct mrsas_mfi_cmd *cmd)
 			}
 		}
 	}
+	sc->chan = NULL;
 
 	if (cmd->cmd_status == 0xFF) {
 		device_printf(sc->mrsas_dev, "DCMD timed out after %d "