From: Bart Van Assche Date: Tue, 7 Mar 2023 21:44:28 +0000 (-0800) Subject: scsi: core: Fix a procfs host directory removal regression X-Git-Tag: baikal/mips/sdk6.1~171 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=52aab6a0977d957cf05c5498fba61a87378bb30b;p=kernel.git scsi: core: Fix a procfs host directory removal regression [ Upstream commit aee2554b59fc3f847614a91670e77d1c57848bf2 ] scsi_proc_hostdir_rm() decreases a reference counter and hence must only be called once per host that is removed. This change does not require a scsi_add_host_with_dma() change since scsi_add_host_with_dma() will return 0 (success) if scsi_proc_host_add() is called. Fixes: e7eabe7096d6 ("scsi: core: Remove the /proc/scsi/${proc_name} directory earlier") Cc: John Garry Reported-by: John Garry Link: https://lore.kernel.org/all/ed6b8027-a9d9-1b45-be8e-df4e8c6c4605@oracle.com/ Reported-by: syzbot+645a4616b87a2f10e398@syzkaller.appspotmail.com Link: https://lore.kernel.org/linux-scsi/000000000000890fab05f65342b6@google.com/ Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230307214428.3703498-1-bvanassche@acm.org Tested-by: John Garry Tested-by: Shin'ichiro Kawasaki Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 85e66574ec414..45a2fd6584d16 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -341,9 +341,6 @@ static void scsi_host_dev_release(struct device *dev) struct Scsi_Host *shost = dev_to_shost(dev); struct device *parent = dev->parent; - /* In case scsi_remove_host() has not been called. */ - scsi_proc_hostdir_rm(shost->hostt); - /* Wait for functions invoked through call_rcu(&scmd->rcu, ...) */ rcu_barrier();