last executing test programs: kernel console output (not intermixed with test programs): [ 18.124220][ T28] audit: type=1400 audit(1786226318.584:103): avc: denied { search } for pid=3175 comm="dhcpcd-run-hook" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 18.146264][ T28] audit: type=1400 audit(1786226318.584:104): avc: denied { search } for pid=3175 comm="dhcpcd-run-hook" name="dhcpcd" dev="tmpfs" ino=482 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 18.416844][ T28] kauditd_printk_skb: 11 callbacks suppressed [ 18.416858][ T28] audit: type=1400 audit(1786226318.874:116): avc: denied { write } for pid=3203 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 18.445947][ T28] audit: type=1400 audit(1786226318.884:117): avc: denied { write } for pid=3214 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 18.477859][ T28] audit: type=1400 audit(1786226318.934:118): avc: denied { write } for pid=3217 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 18.500756][ T28] audit: type=1400 audit(1786226318.934:119): avc: denied { write } for pid=3228 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 19.029582][ T28] audit: type=1400 audit(1786226319.484:120): avc: denied { write } for pid=3231 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 19.052512][ T28] audit: type=1400 audit(1786226319.504:121): avc: denied { write } for pid=3242 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 19.109880][ T28] audit: type=1400 audit(1786226319.564:122): avc: denied { write } for pid=3245 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 19.132784][ T28] audit: type=1400 audit(1786226319.564:123): avc: denied { write } for pid=3256 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 19.209084][ T28] audit: type=1400 audit(1786226319.664:124): avc: denied { write } for pid=3259 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 19.231989][ T28] audit: type=1400 audit(1786226319.674:125): avc: denied { write } for pid=3270 comm="rm" name="hook-state" dev="tmpfs" ino=486 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 Warning: Permanently added '10.128.1.73' (ED25519) to the list of known hosts. [ 22.633272][ T3280] cgroup: Unknown subsys name 'net' [ 22.753143][ T3280] cgroup: Unknown subsys name 'cpuset' [ 22.759166][ T3280] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 22.931046][ T3285] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 22.964612][ T3280] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 23.056987][ C0] ================================================================== [ 23.065079][ C0] BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_disable_cb [ 23.073312][ C0] [ 23.075620][ C0] read to 0xffff8881016c6088 of 2 bytes by interrupt on cpu 1: [ 23.083142][ C0] virtqueue_disable_cb+0x4c/0x2c0 [ 23.088265][ C0] skb_xmit_done+0x67/0x1a0 [ 23.092748][ C0] vring_interrupt+0x2d7/0x310 [ 23.097516][ C0] __handle_irq_event_percpu+0x8b/0x480 [ 23.103043][ C0] handle_irq_event+0x64/0xf0 [ 23.107728][ C0] handle_edge_irq+0x155/0x440 [ 23.112474][ C0] __common_interrupt+0x60/0xb0 [ 23.117321][ C0] common_interrupt+0x7e/0x90 [ 23.121981][ C0] asm_common_interrupt+0x26/0x40 [ 23.126987][ C0] pv_native_safe_halt+0xf/0x20 [ 23.131819][ C0] default_idle+0x9/0x20 [ 23.136041][ C0] default_idle_call+0x3b/0x60 [ 23.140784][ C0] do_idle+0x183/0x2d0 [ 23.144831][ C0] cpu_startup_entry+0x24/0x30 [ 23.149577][ C0] start_secondary+0x95/0xa0 [ 23.154153][ C0] common_startup_64+0x13e/0x157 [ 23.159067][ C0] [ 23.161364][ C0] write to 0xffff8881016c6088 of 2 bytes by interrupt on cpu 0: [ 23.168980][ C0] virtqueue_disable_cb+0x75/0x2c0 [ 23.174072][ C0] start_xmit+0x107/0x1a80 [ 23.178467][ C0] dev_hard_start_xmit+0x10c/0x380 [ 23.183559][ C0] sch_direct_xmit+0x199/0x580 [ 23.188314][ C0] __dev_queue_xmit+0xda4/0x1e90 [ 23.193238][ C0] ip_finish_output2+0x752/0x8a0 [ 23.198170][ C0] ip_finish_output+0x112/0x290 [ 23.203007][ C0] ip_output+0xbd/0x1c0 [ 23.207189][ C0] __ip_queue_xmit+0xb4c/0xb80 [ 23.211954][ C0] ip_queue_xmit+0x39/0x50 [ 23.216349][ C0] __tcp_transmit_skb+0x1c4f/0x20f0 [ 23.221543][ C0] tcp_write_xmit+0x17f7/0x3630 [ 23.226386][ C0] __tcp_push_pending_frames+0x6d/0x1b0 [ 23.231910][ C0] tcp_rcv_established+0xdbf/0x1340 [ 23.237097][ C0] tcp_v4_do_rcv+0x3b1/0xa20 [ 23.241677][ C0] tcp_v4_rcv+0x190e/0x1c50 [ 23.246182][ C0] ip_protocol_deliver_rcu+0x38c/0x7a0 [ 23.251622][ C0] ip_local_deliver_finish+0x1f0/0x2e0 [ 23.257057][ C0] ip_local_deliver+0xe8/0x1e0 [ 23.261795][ C0] ip_sublist_rcv+0x587/0x680 [ 23.266536][ C0] ip_list_rcv+0x261/0x290 [ 23.270961][ C0] __netif_receive_skb_list_core+0x4ef/0x520 [ 23.276994][ C0] netif_receive_skb_list_internal+0x471/0x5e0 [ 23.283128][ C0] napi_complete_done+0x19c/0x3f0 [ 23.288139][ C0] virtnet_poll+0x1b16/0x1fb0 [ 23.292797][ C0] __napi_poll+0x61/0x300 [ 23.297115][ C0] net_rx_action+0x456/0x930 [ 23.301690][ C0] handle_softirqs+0xb9/0x280 [ 23.306344][ C0] __irq_exit_rcu+0x42/0xd0 [ 23.310825][ C0] common_interrupt+0x83/0x90 [ 23.315495][ C0] asm_common_interrupt+0x26/0x40 [ 23.320498][ C0] pv_native_safe_halt+0xf/0x20 [ 23.325330][ C0] default_idle+0x9/0x20 [ 23.329553][ C0] default_idle_call+0x3b/0x60 [ 23.334298][ C0] do_idle+0x183/0x2d0 [ 23.338357][ C0] cpu_startup_entry+0x24/0x30 [ 23.343114][ C0] rest_init+0xee/0xf0 [ 23.347177][ C0] start_kernel+0x49f/0x4d0 [ 23.351657][ C0] x86_64_start_reservations+0x24/0x30 [ 23.357095][ C0] x86_64_start_kernel+0xfc/0x100 [ 23.362116][ C0] common_startup_64+0x13e/0x157 [ 23.367034][ C0] [ 23.369351][ C0] value changed: 0x0000 -> 0x0001 [ 23.374348][ C0] [ 23.376650][ C0] Reported by Kernel Concurrency Sanitizer on: [ 23.382792][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(lazy) [ 23.391717][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 23.401748][ C0] ================================================================== [ 24.034341][ T28] kauditd_printk_skb: 14 callbacks suppressed [ 24.034353][ T28] audit: type=1400 audit(1786226324.494:140): avc: denied { execmem } for pid=3287 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1