==================================================================
BUG: KCSAN: data-race in console_unlock / console_unlock

write to 0xffffffff8417d940 of 8 bytes by interrupt on cpu 1:
 console_unlock+0x570/0xb30 kernel/printk/printk.c:2632
 vprintk_emit+0x125/0x3d0 kernel/printk/printk.c:2174
 dev_vprintk_emit+0x1c6/0x1ea drivers/base/core.c:4556
 dev_printk_emit+0x6a/0x8c drivers/base/core.c:4567
 __dev_printk+0xfa/0x103 drivers/base/core.c:4579
 dev_printk+0x73/0xa0 drivers/base/core.c:4596
 scsi_print_command+0x4dc/0x560 drivers/scsi/scsi_logging.c:221
 scsi_io_completion_action drivers/scsi/scsi_lib.c:791 [inline]
 scsi_io_completion+0xfec/0x10d0 drivers/scsi/scsi_lib.c:955
 scsi_finish_command+0x1d0/0x1e0 drivers/scsi/scsi.c:207
 scsi_complete+0x1c0/0x1f0 drivers/scsi/scsi_lib.c:1425
 blk_complete_reqs block/blk-mq.c:577 [inline]
 blk_done_softirq+0x69/0x90 block/blk-mq.c:582
 __do_softirq+0x12c/0x26e kernel/softirq.c:558
 run_ksoftirqd+0x13/0x20 kernel/softirq.c:920
 smpboot_thread_fn+0x22f/0x330 kernel/smpboot.c:164
 kthread+0x262/0x280 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

read to 0xffffffff8417d940 of 8 bytes by task 26605 on cpu 0:
 console_unlock+0x9f5/0xb30 kernel/printk/printk.c:2667
 vprintk_emit+0x125/0x3d0 kernel/printk/printk.c:2174
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2185
 vprintk+0x15a/0x170 kernel/printk/printk_safe.c:392
 printk+0x62/0x87 kernel/printk/printk.c:2216
 blk_add_partition block/partitions/core.c:564 [inline]
 blk_add_partitions block/partitions/core.c:655 [inline]
 bdev_disk_changed+0x97f/0xea0 block/partitions/core.c:697
 loop_reread_partitions drivers/block/loop.c:693 [inline]
 loop_set_status+0x4dc/0x5a0 drivers/block/loop.c:1576
 lo_ioctl+0x7af/0x1340 drivers/block/loop.c:1686
 blkdev_ioctl+0x1d0/0x3c0 block/ioctl.c:585
 block_ioctl+0x6d/0x80 fs/block_dev.c:1604
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:1055
 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x000000000004af55 -> 0x000000000004af56

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 26605 Comm: syz-executor.5 Not tainted 5.14.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
sd 0:0:1:0: [sg0] tag#891 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#891 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#891 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#891 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#891 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#832 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#832 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#832 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#832 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#832 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#858 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#858 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#858 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#858 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#858 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#859 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#859 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#859 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#859 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#859 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#879 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#879 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#879 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#879 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#879 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#888 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#888 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#888 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#888 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#888 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#859 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#859 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#859 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#859 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#859 CDB[20]: ba
sd 0:0:1:0: [sg0] tag#882 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: [sg0] tag#882 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: [sg0] tag#882 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: [sg0] tag#882 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: [sg0] tag#882 CDB[20]: ba