last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.10.3' (ED25519) to the list of known hosts. [ 33.252232][ T29] audit: type=1400 audit(1752728077.203:62): avc: denied { mounton } for pid=3297 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2022 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 33.253469][ T3297] cgroup: Unknown subsys name 'net' [ 33.275076][ T29] audit: type=1400 audit(1752728077.203:63): avc: denied { mount } for pid=3297 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 33.302900][ T29] audit: type=1400 audit(1752728077.253:64): avc: denied { unmount } for pid=3297 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 33.398786][ T3297] cgroup: Unknown subsys name 'cpuset' [ 33.404993][ T3297] cgroup: Unknown subsys name 'rlimit' [ 33.576258][ T29] audit: type=1400 audit(1752728077.523:65): avc: denied { setattr } for pid=3297 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=142 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 33.604385][ T29] audit: type=1400 audit(1752728077.523:66): avc: denied { create } for pid=3297 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 Setting up swapspace version 1, size = 127995904 bytes [ 33.623857][ T3301] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 33.624936][ T29] audit: type=1400 audit(1752728077.523:67): avc: denied { write } for pid=3297 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 33.643289][ T3297] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 33.653840][ T29] audit: type=1400 audit(1752728077.533:68): avc: denied { read } for pid=3297 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 33.682898][ T29] audit: type=1400 audit(1752728077.543:69): avc: denied { mounton } for pid=3297 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 33.707758][ T29] audit: type=1400 audit(1752728077.543:70): avc: denied { mount } for pid=3297 comm="syz-executor" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 [ 33.731428][ T29] audit: type=1400 audit(1752728077.583:71): avc: denied { relabelto } for pid=3301 comm="mkswap" name="swap-file" dev="sda1" ino=2025 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 33.764731][ T3297] ================================================================== [ 33.772839][ T3297] BUG: KCSAN: data-race in virtqueue_disable_cb / virtqueue_disable_cb [ 33.781095][ T3297] [ 33.783417][ T3297] read to 0xffff88810204a378 of 2 bytes by interrupt on cpu 1: [ 33.790970][ T3297] virtqueue_disable_cb+0x58/0x150 [ 33.796087][ T3297] skb_xmit_done+0x65/0x140 [ 33.800596][ T3297] vring_interrupt+0x152/0x180 [ 33.805374][ T3297] __handle_irq_event_percpu+0x93/0x440 [ 33.810927][ T3297] handle_irq_event+0x64/0xf0 [ 33.815610][ T3297] handle_edge_irq+0x188/0x4f0 [ 33.820385][ T3297] __common_interrupt+0x63/0x100 [ 33.825333][ T3297] common_interrupt+0x7e/0x90 [ 33.830036][ T3297] asm_common_interrupt+0x26/0x40 [ 33.835072][ T3297] pv_native_safe_halt+0x13/0x20 [ 33.840020][ T3297] default_idle+0x13/0x20 [ 33.844369][ T3297] default_idle_call+0x3d/0x70 [ 33.849148][ T3297] do_idle+0xcb/0x240 [ 33.853150][ T3297] cpu_startup_entry+0x25/0x30 [ 33.857957][ T3297] start_secondary+0x95/0xa0 [ 33.862563][ T3297] common_startup_64+0x13e/0x147 [ 33.867512][ T3297] [ 33.869842][ T3297] write to 0xffff88810204a378 of 2 bytes by task 3297 on cpu 0: [ 33.877567][ T3297] virtqueue_disable_cb+0x7a/0x150 [ 33.882684][ T3297] start_xmit+0x102/0x12c0 [ 33.887110][ T3297] dev_hard_start_xmit+0x125/0x3e0 [ 33.892243][ T3297] sch_direct_xmit+0x192/0x550 [ 33.897016][ T3297] __dev_queue_xmit+0xe4f/0x1fb0 [ 33.901972][ T3297] ip_finish_output2+0x77f/0x8b0 [ 33.906919][ T3297] ip_finish_output+0x112/0x290 [ 33.911773][ T3297] ip_output+0xad/0x170 [ 33.915944][ T3297] __ip_queue_xmit+0xb25/0xb40 [ 33.920718][ T3297] ip_queue_xmit+0x39/0x50 [ 33.925139][ T3297] __tcp_transmit_skb+0x1641/0x1a60 [ 33.930348][ T3297] tcp_write_xmit+0x1210/0x2fd0 [ 33.935224][ T3297] __tcp_push_pending_frames+0x6d/0x1b0 [ 33.940786][ T3297] tcp_rcv_established+0xa6b/0xef0 [ 33.945903][ T3297] tcp_v4_do_rcv+0x672/0x740 [ 33.950515][ T3297] sk_backlog_rcv+0x71/0x190 [ 33.955122][ T3297] __release_sock+0xb4/0x130 [ 33.959721][ T3297] release_sock+0x44/0x150 [ 33.964156][ T3297] sk_stream_wait_memory+0x461/0x860 [ 33.969461][ T3297] tcp_sendmsg_locked+0xad4/0x2c10 [ 33.974590][ T3297] tcp_sendmsg+0x2f/0x50 [ 33.978841][ T3297] inet_sendmsg+0x76/0xd0 [ 33.983193][ T3297] __sock_sendmsg+0x102/0x180 [ 33.987885][ T3297] sock_write_iter+0x165/0x1b0 [ 33.992661][ T3297] vfs_write+0x49d/0x8e0 [ 33.996942][ T3297] ksys_write+0xda/0x1a0 [ 34.001203][ T3297] __x64_sys_write+0x40/0x50 [ 34.005812][ T3297] x64_sys_call+0x2cdd/0x2fb0 [ 34.010500][ T3297] do_syscall_64+0xd2/0x200 [ 34.015036][ T3297] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.021024][ T3297] [ 34.023351][ T3297] value changed: 0x0000 -> 0x0001 [ 34.028385][ T3297] [ 34.030717][ T3297] Reported by Kernel Concurrency Sanitizer on: [ 34.036887][ T3297] CPU: 0 UID: 0 PID: 3297 Comm: syz-executor Not tainted 6.16.0-rc6-syzkaller-00037-ge2291551827f #0 PREEMPT(voluntary) [ 34.049494][ T3297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 34.059585][ T3297] ==================================================================