Baptiste PELLEGRIN writes via Kernel.org Bugzilla: I patched the current Debian stable kernels : Debian Linux 6.1.0-29-amd64 (= 6.1.123-1) Based on Linux 6.1.120 Debian Linux 6.1.0-30-amd64 (= 6.1.124-1) Based on Linux 6.1.124 with there two commits : 8626664c87ee NFSD: Replace dprintks in nfsd4_cb_sequence_done() 961b4b5e86bf NFSD: Reset cb_seq_status after NFS4ERR_DELAY Now my two NFS servers are running these patched kernel. I need to wait one week to see If the crash still occur. Chuck, does this patch may remove the "unrecognized reply" messages from my syslog ? I see you have improved the backchannel session logging. Did I need to change my trace-record command ? View: https://bugzilla.kernel.org/show_bug.cgi?id=219710#c22 You can reply to this message to join the discussion. -- Deet-doot-dot, I am a bot. Kernel.org Bugzilla (bugspray 0.1-dev)