• Casey Chen's avatar
    nvme-pci: do not call nvme_dev_remove_admin from nvme_remove · 251ef6f7
    Casey Chen authored
    nvme_dev_remove_admin could free dev->admin_q and the admin_tagset
    while they are being accessed by nvme_dev_disable(), which can be called
    by nvme_reset_work via nvme_remove_dead_ctrl.
    
    Commit cb4bfda6 ("nvme-pci: fix hot removal during error handling")
    intended to avoid requests being stuck on a removed controller by killing
    the admin queue. But the later fix c8e9e9b7 ("nvme-pci: unquiesce
    admin queue on shutdown"), together with nvme_dev_disable(dev, true)
    right before nvme_dev_remove_admin() could help dispatch requests and
    fail them early, so we don't need nvme_dev_remove_admin() any more.
    
    Fixes: cb4bfda6
    
     ("nvme-pci: fix hot removal during error handling")
    Signed-off-by: default avatarCasey Chen <cachen@purestorage.com>
    Reviewed-by: default avatarKeith Busch <kbusch@kernel.org>
    Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
    251ef6f7
pci.c 86.8 KB