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| author | Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> | 2022-11-12 10:06:12 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-11-26 02:52:18 +0300 |
| commit | 07f2ca139d9a7a1ba71c4c03997c8de161db2346 (patch) | |
| tree | 27859eb767dfb5431de1d145ab886949343ce890 /drivers/scsi | |
| parent | ed0f17b748b20271cb568c7ca0b23b120316a47d (diff) | |
| download | linux-07f2ca139d9a7a1ba71c4c03997c8de161db2346.tar.xz | |
scsi: scsi_debug: Fix a warning in resp_report_zones()
As 'alloc_len' is user controlled data, if user tries to allocate memory
larger than(>=) MAX_ORDER, then kcalloc() will fail, it creates a stack
trace and messes up dmesg with a warning.
Add __GFP_NOWARN in order to avoid too large allocation warning. This is
detected by static analysis using smatch.
Fixes: 7db0e0c8190a ("scsi: scsi_debug: Fix buffer size of REPORT ZONES command")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Link: https://lore.kernel.org/r/20221112070612.2121535-1-harshit.m.mogalapalli@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index f556e36a2e0d..19ad8e2aa07a 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -4497,7 +4497,7 @@ static int resp_report_zones(struct scsi_cmnd *scp, rep_max_zones = (alloc_len - 64) >> ilog2(RZONES_DESC_HD); - arr = kzalloc(alloc_len, GFP_ATOMIC); + arr = kzalloc(alloc_len, GFP_ATOMIC | __GFP_NOWARN); if (!arr) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, INSUFF_RES_ASCQ); |