last executing test programs: kernel console output (not intermixed with test programs): [ 17.658765][ T29] audit: type=1400 audit(1719835078.021:81): avc: denied { read } for pid=2765 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 Warning: Permanently added '10.128.0.142' (ED25519) to the list of known hosts. [ 20.397723][ T29] audit: type=1400 audit(1719835080.761:82): avc: denied { mounton } for pid=3068 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=1925 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 20.398625][ T3068] cgroup: Unknown subsys name 'net' [ 20.420454][ T29] audit: type=1400 audit(1719835080.761:83): avc: denied { mount } for pid=3068 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 [ 20.447879][ T29] audit: type=1400 audit(1719835080.791:84): avc: denied { unmount } for pid=3068 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 20.625603][ T3068] cgroup: Unknown subsys name 'rlimit' [ 20.719019][ T29] audit: type=1400 audit(1719835081.081:85): avc: denied { create } for pid=3068 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 20.739571][ T29] audit: type=1400 audit(1719835081.081:86): avc: denied { write } for pid=3068 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 20.760101][ T29] audit: type=1400 audit(1719835081.081:87): avc: denied { read } for pid=3068 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 20.767320][ T3070] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 20.780636][ T29] audit: type=1400 audit(1719835081.081:88): avc: denied { mounton } for pid=3068 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 [ 20.814060][ T29] audit: type=1400 audit(1719835081.081:89): avc: denied { mount } for pid=3068 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 [ 20.837269][ T29] audit: type=1400 audit(1719835081.151:90): avc: denied { relabelto } for pid=3070 comm="mkswap" name="swap-file" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 20.862764][ T29] audit: type=1400 audit(1719835081.151:91): avc: denied { write } for pid=3070 comm="mkswap" path="/root/swap-file" dev="sda1" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 20.888621][ T0] ================================================================== [ 20.896682][ T0] BUG: KCSAN: data-race in __tmigr_cpu_activate / tmigr_update_events [ 20.904898][ T0] [ 20.907201][ T0] write to 0xffff888237d205e4 of 1 bytes by task 0 on cpu 1: [ 20.914551][ T0] __tmigr_cpu_activate+0x55/0x1f0 [ 20.919651][ T0] tmigr_cpu_activate+0x8a/0xc0 [ 20.924492][ T0] timer_clear_idle+0x28/0x100 [ 20.929246][ T0] tick_nohz_restart_sched_tick+0x22/0x110 [ 20.935036][ T0] tick_nohz_idle_exit+0xfe/0x1d0 [ 20.940038][ T0] do_idle+0x1ee/0x230 [ 20.944085][ T0] cpu_startup_entry+0x25/0x30 [ 20.948827][ T0] start_secondary+0x94/0xa0 [ 20.953392][ T0] common_startup_64+0x12c/0x137 [ 20.958313][ T0] [ 20.960613][ T0] read to 0xffff888237d205e4 of 1 bytes by task 0 on cpu 0: [ 20.967865][ T0] tmigr_update_events+0x41d/0x5d0 [ 20.972948][ T0] __tmigr_cpu_deactivate+0x283/0x470 [ 20.978306][ T0] tmigr_cpu_deactivate+0x66/0x180 [ 20.983407][ T0] __get_next_timer_interrupt+0x137/0x530 [ 20.989126][ T0] timer_base_try_to_set_idle+0x54/0x60 [ 20.994652][ T0] tick_nohz_idle_stop_tick+0x15b/0x640 [ 21.000178][ T0] do_idle+0x178/0x230 [ 21.004232][ T0] cpu_startup_entry+0x25/0x30 [ 21.009061][ T0] rest_init+0xef/0xf0 [ 21.013109][ T0] start_kernel+0x581/0x5e0 [ 21.017588][ T0] x86_64_start_reservations+0x2a/0x30 [ 21.023026][ T0] x86_64_start_kernel+0x94/0xa0 [ 21.028030][ T0] common_startup_64+0x12c/0x137 [ 21.032950][ T0] [ 21.035247][ T0] value changed: 0x00 -> 0x01 [ 21.039893][ T0] [ 21.042205][ T0] Reported by Kernel Concurrency Sanitizer on: [ 21.048332][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.10.0-rc6-syzkaller #0 [ 21.056283][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Setting up swapspace version 1, size = 127995904 bytes [ 21.066317][ T0] ================================================================== [ 21.083225][ T3068] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SYZFAIL: failed to recv rpc fd=3 want=4 sent=0 n=0 (errno 9: Bad file descriptor)