From: WenTao Liang Date: Thu, 11 Jun 2026 05:30:37 +0000 (+0800) Subject: scsi: elx: efct: Fix refcount leak in efct_hw_io_abort() X-Git-Tag: v7.2-rc4~9^2~1 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c007acf7b31c39c08ce4959451ad00b19be4c1f;p=thirdparty%2Fkernel%2Flinux.git scsi: elx: efct: Fix refcount leak in efct_hw_io_abort() When efct_hw_reqtag_alloc() fails in efct_hw_io_abort(), the error path returns -ENOSPC without releasing the reference obtained via kref_get_unless_zero() earlier in the function. All other error paths correctly drop the reference. This causes a permanent reference leak on the io_to_abort object. Additionally, the abort_in_progress flag is left set to true on this path, which means future abort attempts for the same I/O will immediately return -EINPROGRESS even though the abort was never submitted, effectively blocking recovery. Fix this by adding the missing kref_put() call and reset abort_in_progress to false, matching the cleanup done in the efct_hw_wq_write() failure path below. Cc: stable@vger.kernel.org Fixes: 63de51327a64 ("scsi: elx: efct: Hardware I/O and SGL initialization") Signed-off-by: WenTao Liang Reviewed-by: Daniel Wagner Link: https://patch.msgid.link/20260611053037.63756-1-vulab@iscas.ac.cn Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/elx/efct/efct_hw.c b/drivers/scsi/elx/efct/efct_hw.c index 1838032f6486..b79c6a7ea791 100644 --- a/drivers/scsi/elx/efct/efct_hw.c +++ b/drivers/scsi/elx/efct/efct_hw.c @@ -1997,6 +1997,8 @@ efct_hw_io_abort(struct efct_hw *hw, struct efct_hw_io *io_to_abort, wqcb = efct_hw_reqtag_alloc(hw, efct_hw_wq_process_abort, io_to_abort); if (!wqcb) { efc_log_err(hw->os, "can't allocate request tag\n"); + io_to_abort->abort_in_progress = false; + kref_put(&io_to_abort->ref, io_to_abort->release); return -ENOSPC; }