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| author | Maurizio Lombardi <mlombard@redhat.com> | 2019-11-15 17:37:27 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-04 19:13:04 +0100 |
| commit | 1b4128a55cc02e2afa99ff5aa747070d962ec7e4 (patch) | |
| tree | c2b9fc3d99c12947d632891a0defaf8c2ff7ca21 /drivers/scsi/scsi_debug.c | |
| parent | a4c9fd613eec085df74de61c55138cbc4ba6b84c (diff) | |
| download | linux-stable-1b4128a55cc02e2afa99ff5aa747070d962ec7e4.tar.gz linux-stable-1b4128a55cc02e2afa99ff5aa747070d962ec7e4.tar.bz2 linux-stable-1b4128a55cc02e2afa99ff5aa747070d962ec7e4.zip | |
scsi: scsi_debug: num_tgts must be >= 0
[ Upstream commit aa5334c4f3014940f11bf876e919c956abef4089 ]
Passing the parameter "num_tgts=-1" will start an infinite loop that
exhausts the system memory
Link: https://lore.kernel.org/r/20191115163727.24626-1-mlombard@redhat.com
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/scsi/scsi_debug.c')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 65305b3848bc..a1dbae806fde 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -5351,6 +5351,11 @@ static int __init scsi_debug_init(void) return -EINVAL; } + if (sdebug_num_tgts < 0) { + pr_err("num_tgts must be >= 0\n"); + return -EINVAL; + } + if (sdebug_guard > 1) { pr_err("guard must be 0 or 1\n"); return -EINVAL; |