================================================================== BUG: KCSAN: data-race in audit_log_start / audit_receive write to 0xffffffff893cb510 of 8 bytes by task 10770 on cpu 0: audit_ctl_unlock kernel/audit.c:257 [inline] audit_receive+0x20d5/0x2270 kernel/audit.c:1620 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5c0/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x5c8/0x6f0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x563/0x5b0 net/socket.c:2592 ___sys_sendmsg+0x195/0x1e0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0xd4/0x160 net/socket.c:2681 x64_sys_call+0x194c/0x3020 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x12c/0x370 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff893cb510 of 8 bytes by task 3038 on cpu 1: audit_ctl_owner_current kernel/audit.c:270 [inline] audit_log_start+0x103/0x730 kernel/audit.c:1926 common_lsm_audit+0x65/0x230 security/lsm_audit.c:442 slow_avc_audit+0x14c/0x190 security/selinux/avc.c:779 avc_audit security/selinux/include/avc.h:131 [inline] avc_has_perm+0x144/0x190 security/selinux/avc.c:1198 sock_has_perm security/selinux/hooks.c:4820 [inline] selinux_socket_recvmsg+0x192/0x1c0 security/selinux/hooks.c:5167 security_socket_recvmsg+0x4c/0x90 security/security.c:4228 sock_recvmsg+0x38/0x120 net/socket.c:1098 ____sys_recvmsg+0xf5/0x280 net/socket.c:2812 ___sys_recvmsg+0x11f/0x3b0 net/socket.c:2854 __sys_recvmsg net/socket.c:2887 [inline] __do_sys_recvmsg net/socket.c:2893 [inline] __se_sys_recvmsg net/socket.c:2890 [inline] __x64_sys_recvmsg+0xd1/0x160 net/socket.c:2890 x64_sys_call+0x2b1a/0x3020 arch/x86/include/generated/asm/syscalls_64.h:48 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x12c/0x370 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0xffff888104bd0000 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 3038 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 ================================================================== audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=4628 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=4629 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=4630 audit_rate_limit=0 audit_backlog_limit=64 audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=4712 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: audit_backlog=65 > audit_backlog_limit=64 audit: audit_lost=4713 audit_rate_limit=0 audit_backlog_limit=64