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SubjectRe: [syzbot] KMSAN: uninit-value in alauda_check_media
From
Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KMSAN: uninit-value in scsi_mode_sense

sd 2:0:0:0: [sdd] 0 512-byte logical blocks: (0 B/0 B)
sd 2:0:0:0: [sdd] 0-byte physical blocks
=====================================================
BUG: KMSAN: uninit-value in scsi_mode_sense+0x1046/0x16d0 drivers/scsi/scsi_lib.c:2200
scsi_mode_sense+0x1046/0x16d0 drivers/scsi/scsi_lib.c:2200
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in set_disk_ro+0x2ab/0x310 block/genhd.c:1413
set_disk_ro+0x2ab/0x310 block/genhd.c:1413
sd_read_write_protect_flag drivers/scsi/sd.c:2712 [inline]
sd_revalidate_disk+0x5697/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
scsi_mode_sense+0x1656/0x16d0
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:638 [inline]
BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 lib/vsprintf.c:720
string_nocheck lib/vsprintf.c:638 [inline]
string+0x4ec/0x6f0 lib/vsprintf.c:720
vsnprintf+0x2222/0x3650 lib/vsprintf.c:2805
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2714 [inline]
sd_revalidate_disk+0x597c/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
sd_read_write_protect_flag drivers/scsi/sd.c:2711 [inline]
sd_revalidate_disk+0x5b19/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
scsi_mode_sense+0x1656/0x16d0
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:638 [inline]
BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 lib/vsprintf.c:720
string_nocheck lib/vsprintf.c:638 [inline]
string+0x4ec/0x6f0 lib/vsprintf.c:720
vsnprintf+0x2222/0x3650 lib/vsprintf.c:2805
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2714 [inline]
sd_revalidate_disk+0x597c/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
sd_read_write_protect_flag drivers/scsi/sd.c:2711 [inline]
sd_revalidate_disk+0x5b19/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
scsi_mode_sense+0x1656/0x16d0
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:638 [inline]
BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 lib/vsprintf.c:720
string_nocheck lib/vsprintf.c:638 [inline]
string+0x4ec/0x6f0 lib/vsprintf.c:720
vsnprintf+0x2222/0x3650 lib/vsprintf.c:2805
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2714 [inline]
sd_revalidate_disk+0x597c/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
sd_read_write_protect_flag drivers/scsi/sd.c:2711 [inline]
sd_revalidate_disk+0x5b19/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
scsi_mode_sense+0x1656/0x16d0
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:638 [inline]
BUG: KMSAN: uninit-value in string+0x4ec/0x6f0 lib/vsprintf.c:720
string_nocheck lib/vsprintf.c:638 [inline]
string+0x4ec/0x6f0 lib/vsprintf.c:720
vsnprintf+0x2222/0x3650 lib/vsprintf.c:2805
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2714 [inline]
sd_revalidate_disk+0x597c/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
sd_read_write_protect_flag drivers/scsi/sd.c:2711 [inline]
sd_revalidate_disk+0x5b19/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
scsi_mode_sense+0x1656/0x16d0
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
sd 2:0:0:0: [sdd] Write Protect is off
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x92b/0xa40 lib/vsprintf.c:1179
hex_string+0x92b/0xa40 lib/vsprintf.c:1179
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x962/0xa40 lib/vsprintf.c:1182
hex_string+0x962/0xa40 lib/vsprintf.c:1182
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x92b/0xa40 lib/vsprintf.c:1179
hex_string+0x92b/0xa40 lib/vsprintf.c:1179
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x962/0xa40 lib/vsprintf.c:1182
hex_string+0x962/0xa40 lib/vsprintf.c:1182
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x92b/0xa40 lib/vsprintf.c:1179
hex_string+0x92b/0xa40 lib/vsprintf.c:1179
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x962/0xa40 lib/vsprintf.c:1182
hex_string+0x962/0xa40 lib/vsprintf.c:1182
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x92b/0xa40 lib/vsprintf.c:1179
hex_string+0x92b/0xa40 lib/vsprintf.c:1179
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in hex_string+0x962/0xa40 lib/vsprintf.c:1182
hex_string+0x962/0xa40 lib/vsprintf.c:1182
pointer+0x3ae/0x2060 lib/vsprintf.c:2407
vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2809
vscnprintf+0xbe/0x1c0 lib/vsprintf.c:2908
sdev_prefix_printk+0x4b9/0x5a0 drivers/scsi/scsi_logging.c:73
sd_read_write_protect_flag drivers/scsi/sd.c:2716 [inline]
sd_revalidate_disk+0x5afc/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was stored to memory at:
memcpy_from_page include/linux/highmem.h:346 [inline]
memcpy_from_bvec include/linux/bvec.h:207 [inline]
bio_copy_kern_endio_read+0x4a3/0x620 block/blk-map.c:403
bio_endio+0xa7f/0xac0 block/bio.c:1491
req_bio_endio block/blk-mq.c:674 [inline]
blk_update_request+0x1129/0x22d0 block/blk-mq.c:742
blk_mq_end_request block/blk-mq.c:821 [inline]
blk_mq_dispatch_rq_list+0x16f8/0x3f50 block/blk-mq.c:1685
__blk_mq_sched_dispatch_requests+0x58b/0x8d0 block/blk-mq-sched.c:325
blk_mq_sched_dispatch_requests+0x1b9/0x380 block/blk-mq-sched.c:358
__blk_mq_run_hw_queue+0x201/0x350 block/blk-mq.c:1785
__blk_mq_delay_run_hw_queue+0x21d/0x970 block/blk-mq.c:1862
blk_mq_run_hw_queue+0x57c/0x7b0 block/blk-mq.c:1915
blk_mq_sched_insert_request+0x3b8/0x790 block/blk-mq-sched.c:477
blk_execute_rq_nowait block/blk-exec.c:62 [inline]
blk_execute_rq+0x406/0x7c0 block/blk-exec.c:102
__scsi_execute+0x84d/0xe30 drivers/scsi/scsi_lib.c:244
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

Uninit was created at:
__alloc_pages+0xbbf/0x1090 mm/page_alloc.c:5409
alloc_pages+0x8a5/0xb80
bio_copy_kern block/blk-map.c:449 [inline]
blk_rq_map_kern+0x813/0x1400 block/blk-map.c:640
__scsi_execute+0x4bd/0xe30 drivers/scsi/scsi_lib.c:229
scsi_execute_req include/scsi/scsi_device.h:470 [inline]
scsi_mode_sense+0x737/0x16d0 drivers/scsi/scsi_lib.c:2163
sd_revalidate_disk+0x5206/0xdfd0 drivers/scsi/sd.c:3328
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthread.c:327
ret_from_fork+0x1f/0x30

CPU: 0 PID: 51 Comm: kworker/u4:2 Tainted: G B 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound async_run_entry_fn
=====================================================
=====================================================
BUG: KMSAN: uninit-value in scsi_mode_sense+0x1046/0x16d0 drivers/scsi/scsi_lib.c:2200
scsi_mode_sense+0x1046/0x16d0 drivers/scsi/scsi_lib.c:2200
sd_do_mode_sense drivers/scsi/sd.c:2657 [inline]
sd_read_cache_type drivers/scsi/sd.c:2765 [inline]
sd_revalidate_disk+0x6225/0xdfd0 drivers/scsi/sd.c:3329
sd_probe+0x10a7/0x1970 drivers/scsi/sd.c:3567
really_probe+0x67d/0x1510 drivers/base/dd.c:596
__driver_probe_device+0x3e9/0x530 drivers/base/dd.c:751
driver_probe_device drivers/base/dd.c:781 [inline]
__device_attach_driver+0x79f/0x1120 drivers/base/dd.c:898
bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427
__device_attach_async_helper+0x314/0x3e0 drivers/base/dd.c:927
async_run_entry_fn+0xd2/0x630 kernel/async.c:127
process_one_work+0xdb9/0x1820 kernel/workqueue.c:2298
worker_thread+0x10bc/0x21f0 kernel/workqueue.c:2445
kthread+0x721/0x850 kernel/kthre

Tested on:

commit: 81c325bb kmsan: hooks: do not check memory in kmsan_in..
git tree: https://github.com/google/kmsan.git master
console output: https://syzkaller.appspot.com/x/log.txt?x=1736b3dbb00000
kernel config: https://syzkaller.appspot.com/x/.config?x=1e3911d4873b88c8
dashboard link: https://syzkaller.appspot.com/bug?extid=e7d46eb426883fb97efd
compiler: clang version 14.0.0 (/usr/local/google/src/llvm-git-monorepo 2b554920f11c8b763cd9ed9003f4e19b919b8e1f), GNU ld (GNU Binutils for Debian) 2.35.2
patch: https://syzkaller.appspot.com/x/patch.diff?x=1436c22db00000

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