sd 0:0:1:0: tag#5088 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
==================================================================
BUG: KCSAN: data-race in data_push_tail / dentry_name

write to 0xffffffff84128393 of 1 bytes by task 7166 on cpu 1:
 dentry_name+0x306/0x380 lib/vsprintf.c:943
 pointer+0x58e/0x830 lib/vsprintf.c:2437
 vsnprintf+0x8a1/0xed0 lib/vsprintf.c:2801
 vscnprintf+0x29/0x80 lib/vsprintf.c:2900
 printk_sprint kernel/printk/printk.c:2075 [inline]
 vprintk_store+0x606/0xb80 kernel/printk/printk.c:2185
 vprintk_emit+0xac/0x390 kernel/printk/printk.c:2228
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2255
 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50
 _printk+0x76/0x97 kernel/printk/printk.c:2265
 fail_dump lib/fault-inject.c:45 [inline]
 should_fail+0x223/0x250 lib/fault-inject.c:146
 __should_failslab+0x81/0x90 mm/failslab.c:33
 should_failslab+0x5/0x20 mm/slab_common.c:1328
 slab_pre_alloc_hook mm/slab.h:494 [inline]
 slab_alloc mm/slab.c:3306 [inline]
 kmem_cache_alloc+0x4f/0x300 mm/slab.c:3507
 kmem_cache_zalloc include/linux/slab.h:711 [inline]
 __kernfs_new_node+0x6a/0x330 fs/kernfs/dir.c:585
 kernfs_new_node+0x5b/0xd0 fs/kernfs/dir.c:647
 __kernfs_create_file+0x45/0x1a0 fs/kernfs/file.c:985
 sysfs_add_file_mode_ns+0x1c1/0x250 fs/sysfs/file.c:317
 sysfs_merge_group+0xc5/0x1a0 fs/sysfs/group.c:343
 dpm_sysfs_add+0x9d/0x1d0 drivers/base/power/sysfs.c:707
 device_add+0x9b6/0xf40 drivers/base/core.c:3316
 device_create_groups_vargs drivers/base/core.c:4017 [inline]
 device_create+0x17d/0x1d0 drivers/base/core.c:4059
 bdi_register_va+0x7c/0x3c0 mm/backing-dev.c:883
 super_setup_bdi_name+0x93/0x120 fs/super.c:1557
 super_setup_bdi+0x45/0x50 fs/super.c:1578
 v9fs_fill_super fs/9p/vfs_super.c:79 [inline]
 v9fs_mount+0x1cd/0x4c0 fs/9p/vfs_super.c:137
 legacy_get_tree+0x70/0xc0 fs/fs_context.c:610
 vfs_get_tree+0x4a/0x1a0 fs/super.c:1498
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x11ec/0x1d20 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount+0x24b/0x2f0 fs/namespace.c:3516
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffffff84128390 of 8 bytes by interrupt on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:587 [inline]
 data_push_tail+0x138/0x470 kernel/printk/printk_ringbuffer.c:672
 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1043
 prb_reserve+0x920/0xbf0 kernel/printk/printk_ringbuffer.c:1549
 vprintk_store+0x53a/0xb80 kernel/printk/printk.c:2175
 vprintk_emit+0xac/0x390 kernel/printk/printk.c:2228
 dev_vprintk_emit+0x1c9/0x1ed drivers/base/core.c:4559
 dev_printk_emit+0x7e/0xa2 drivers/base/core.c:4570
 __dev_printk+0xfa/0x103 drivers/base/core.c:4582
 _dev_printk+0x84/0xb0 drivers/base/core.c:4599
 scsi_print_command+0x4c2/0x540 drivers/scsi/scsi_logging.c:222
 scsi_io_completion_action drivers/scsi/scsi_lib.c:793 [inline]
 scsi_io_completion+0xfe6/0x10c0 drivers/scsi/scsi_lib.c:957
 scsi_finish_command+0x1ba/0x1d0 drivers/scsi/scsi.c:207
 scsi_complete+0x1aa/0x1e0 drivers/scsi/scsi_lib.c:1432
 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

value changed: 0x0000000100003fe9 -> 0x000000010020656d

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10 Comm: ksoftirqd/0 Not tainted 5.15.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
sd 0:0:1:0: tag#5088 CDB[20]: ba
sd 0:0:1:0: tag#5090 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5090 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5090 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5090 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5090 CDB[20]: ba
sd 0:0:1:0: tag#5099 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5099 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5099 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5099 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5099 CDB[20]: ba
sd 0:0:1:0: tag#5102 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5102 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5102 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5102 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5102 CDB[20]: ba
sd 0:0:1:0: tag#5103 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5103 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5103 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5103 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5103 CDB[20]: ba
sd 0:0:1:0: tag#5108 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5108 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5108 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5108 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5108 CDB[20]: ba
sd 0:0:1:0: tag#5110 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5110 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5110 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5110 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5110 CDB[20]: ba
sd 0:0:1:0: tag#5115 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5115 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5115 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5115 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5115 CDB[20]: ba
sd 0:0:1:0: tag#5117 FAILED Result: hostbyte=DID_ABORT driverbyte=DRIVER_OK cmd_age=0s
sd 0:0:1:0: tag#5117 CDB: opcode=0xe5 (vendor)
sd 0:0:1:0: tag#5117 CDB[00]: e5 f4 32 73 2f 4e 09 6d 26 e2 c7 35 d1 35 12 1c
sd 0:0:1:0: tag#5117 CDB[10]: 92 1b da 40 b8 58 5b a8 d4 7d 34 f3 90 4c f1 2d
sd 0:0:1:0: tag#5117 CDB[20]: ba