This is a note to let you know that I've just added the patch titled scsi: scsi_debug: Fix a warning in resp_report_zones() to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scsi-scsi_debug-fix-a-warning-in-resp_report_zones.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit a254789cd2e10d6e5d6a01c8262b954a67572893 Author: Harshit Mogalapalli <harshit.m.mogalapalli@xxxxxxxxxx> Date: Fri Nov 11 23:06:12 2022 -0800 scsi: scsi_debug: Fix a warning in resp_report_zones() [ Upstream commit 07f2ca139d9a7a1ba71c4c03997c8de161db2346 ] 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@xxxxxxxxxx> Link: https://lore.kernel.org/r/20221112070612.2121535-1-harshit.m.mogalapalli@xxxxxxxxxx Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 077782eb55e7..3452fef3f749 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -4504,7 +4504,7 @@ 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);