audit: type=1400 audit(1688866986.733:511): avc:  denied  { relabelfrom } for  pid=7271 comm="syz-executor.4" name="NETLINK" dev="sockfs" ino=122395 scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_route_socket permissive=1
==================================================================
BUG: KCSAN: data-race in data_push_tail / vsnprintf

write to 0xffffffff86f41726 of 1 bytes by task 7272 on cpu 1:
 vsnprintf+0xdd0/0xe20
 vscnprintf+0x42/0x80 lib/vsprintf.c:2923
 printk_sprint+0x30/0x2d0 kernel/printk/printk.c:2128
 vprintk_store+0x56f/0x800 kernel/printk/printk.c:2242
 vprintk_emit+0xd0/0x430 kernel/printk/printk.c:2288
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2318
 vprintk+0x83/0x90 kernel/printk/printk_safe.c:50
 _printk+0x7a/0xa0 kernel/printk/printk.c:2328
 sidtab_context_to_sid+0x5bf/0x5e0 security/selinux/ss/sidtab.c:346
 security_context_to_sid_core+0x299/0x3a0 security/selinux/ss/services.c:1549
 security_context_to_sid_force+0x30/0x40 security/selinux/ss/services.c:1622
 selinux_inode_setxattr+0x579/0x770 security/selinux/hooks.c:3192
 security_inode_setxattr+0xa0/0x130 security/security.c:2142
 __vfs_setxattr_locked+0x88/0x1d0 fs/xattr.c:287
 vfs_setxattr+0x140/0x280 fs/xattr.c:322
 do_setxattr fs/xattr.c:630 [inline]
 setxattr+0x1bc/0x230 fs/xattr.c:653
 __do_sys_fsetxattr fs/xattr.c:709 [inline]
 __se_sys_fsetxattr+0x117/0x170 fs/xattr.c:698
 __x64_sys_fsetxattr+0x67/0x80 fs/xattr.c:698
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffffff86f41720 of 8 bytes by task 26 on cpu 0:
 data_make_reusable kernel/printk/printk_ringbuffer.c:590 [inline]
 data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:675
 data_alloc+0xbe/0x2c0 kernel/printk/printk_ringbuffer.c:1046
 prb_reserve+0x893/0xbc0 kernel/printk/printk_ringbuffer.c:1555
 vprintk_store+0x53e/0x800 kernel/printk/printk.c:2232
 vprintk_emit+0xd0/0x430 kernel/printk/printk.c:2288
 vprintk_default+0x26/0x30 kernel/printk/printk.c:2318
 vprintk+0x83/0x90 kernel/printk/printk_safe.c:50
 _printk+0x7a/0xa0 kernel/printk/printk.c:2328
 kauditd_printk_skb kernel/audit.c:536 [inline]
 kauditd_hold_skb+0x19d/0x1b0 kernel/audit.c:571
 kauditd_send_queue+0x27a/0x2d0 kernel/audit.c:756
 kauditd_thread+0x42a/0x640 kernel/audit.c:880
 kthread+0x1d7/0x210 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000000fffff0a9 -> 0x00000a2e292e2964

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 26 Comm: kauditd Not tainted 6.4.0-syzkaller-12415-g8fc3b8f082cc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023
==================================================================
audit: type=1400 audit(1688866986.733:512): avc:  denied  { relabelto } for  pid=7271 comm="syz-executor.4" name="NETLINK" dev="sockfs" ino=122395 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=netlink_route_socket permissive=1 trawcon="system_u:object_r:sound_device_t:s0"
audit: type=1400 audit(1688866994.163:513): avc:  denied  { setopt } for  pid=7898 comm="syz-executor.0" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=qipcrtr_socket permissive=1
audit: type=1400 audit(1688866994.533:514): avc:  denied  { name_connect } for  pid=7959 comm="syz-executor.4" dest=10 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:reserved_port_t tclass=sctp_socket permissive=1