==================================================================
BUG: KCSAN: data-race in data_push_tail / number

write to 0xffffffff86e53170 of 1 bytes by task 5074 on cpu 1:
 number+0x8a7/0xbe0 lib/vsprintf.c:561
 vsnprintf+0xa5e/0xe80 lib/vsprintf.c:2848
 va_format lib/vsprintf.c:1680 [inline]
 pointer+0x685/0x910 lib/vsprintf.c:2419
 vsnprintf+0x905/0xe80 lib/vsprintf.c:2786
 vscnprintf+0x3e/0x80 lib/vsprintf.c:2888
 printk_sprint kernel/printk/printk.c:2092 [inline]
 vprintk_store+0x5f2/0xb50 kernel/printk/printk.c:2206
 vprintk_emit+0xcc/0x430 kernel/printk/printk.c:2252
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2282
 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50
 _printk+0x76/0x96 kernel/printk/printk.c:2292
 __ext4_msg+0x174/0x180 fs/ext4/super.c:944
 ext4_fill_super+0x2bb9/0x4f00 fs/ext4/super.c:5507
 get_tree_bdev+0x2b4/0x3b0 fs/super.c:1292
 ext4_get_tree+0x18/0x20 fs/ext4/super.c:5537
 vfs_get_tree+0x49/0x190 fs/super.c:1497
 do_new_mount+0x200/0x650 fs/namespace.c:3040
 path_mount+0x4b1/0xb60 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x281/0x2d0 fs/namespace.c:3568
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

read to 0xffffffff86e53170 of 8 bytes by task 24 on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:590 [inline]
 data_push_tail+0x10f/0x440 kernel/printk/printk_ringbuffer.c:675
 data_alloc+0xbc/0x2b0 kernel/printk/printk_ringbuffer.c:1046
 prb_reserve+0x897/0xbd0 kernel/printk/printk_ringbuffer.c:1555
 vprintk_store+0x51c/0xb50 kernel/printk/printk.c:2196
 vprintk_emit+0xcc/0x430 kernel/printk/printk.c:2252
 vprintk_default+0x22/0x30 kernel/printk/printk.c:2282
 vprintk+0x7f/0x90 kernel/printk/printk_safe.c:50
 _printk+0x76/0x96 kernel/printk/printk.c:2292
 kauditd_printk_skb kernel/audit.c:538 [inline]
 kauditd_hold_skb+0x19b/0x1a0 kernel/audit.c:573
 kauditd_send_queue+0x297/0x300 kernel/audit.c:758
 kauditd_thread+0x49b/0x740 kernel/audit.c:882
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0x00000000fffff881 -> 0x29736b636f6c6220

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 24 Comm: kauditd Not tainted 5.19.0-rc5-syzkaller-00200-ga471da3100ef-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
==================================================================
audit: type=1400 audit(2596836340.281:33511): avc:  denied  { unmount } for  pid=32221 comm="syz-executor.0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:bpf_t tclass=filesystem permissive=1
audit: type=1400 audit(2596836340.691:33512): avc:  denied  { getopt } for  pid=5138 comm="syz-executor.4" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=pppox_socket permissive=1
audit: type=1400 audit(2596836344.661:33513): avc:  denied  { read } for  pid=5327 comm="syz-executor.0" name="autofs" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:autofs_device_t tclass=chr_file permissive=1
audit: type=1400 audit(2596836344.681:33514): avc:  denied  { open } for  pid=5327 comm="syz-executor.0" path="/dev/autofs" dev="devtmpfs" ino=91 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:autofs_device_t tclass=chr_file permissive=1
audit: type=1400 audit(2596836344.681:33515): avc:  denied  { ioctl } for  pid=5327 comm="syz-executor.0" path="/dev/autofs" dev="devtmpfs" ino=91 ioctlcmd=0x9375 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:autofs_device_t tclass=chr_file permissive=1