./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3065445515 <...> syzkaller login: [ 100.263536][ T28] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.134' (ECDSA) to the list of known hosts. execve("./syz-executor3065445515", ["./syz-executor3065445515"], 0x7fffe593acc0 /* 10 vars */) = 0 brk(NULL) = 0x555555830000 brk(0x555555830c40) = 0x555555830c40 arch_prctl(ARCH_SET_FS, 0x555555830300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3065445515", 4096) = 28 brk(0x555555851c40) = 0x555555851c40 brk(0x555555852000) = 0x555555852000 mprotect(0x7f25dd079000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("/syzcgroup", 0777) = 0 mkdir("/syzcgroup/unified", 0777) = 0 mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL) = 0 chmod("/syzcgroup/unified", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/unified/cgroup.subtree_control", O_WRONLY) = 3 write(3, "+cpu", 4) = 4 write(3, "+memory", 7) = 7 write(3, "+io", 3) = 3 write(3, "+pids", 5) = 5 close(3) = 0 mkdir("/syzcgroup/net", 0777) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "net") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "devices") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "blkio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "freezer") = 0 umount2("/syzcgroup/net", 0) = 0 [ 107.076730][ T3491] cgroup: Unknown subsys name 'net' mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = 0 chmod("/syzcgroup/net", 0777) = 0 mkdir("/syzcgroup/cpu", 0777) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "hugetlb") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "rlimit") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) [ 107.239181][ T3491] cgroup: Unknown subsys name 'rlimit' mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = 0 chmod("/syzcgroup/cpu", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cgroup.clone_children", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cpuset.memory_pressure_enabled", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 getpid() = 3491 mkdir("./syzkaller.MLtzYb", 0700) = 0 chmod("./syzkaller.MLtzYb", 0777) = 0 chdir("./syzkaller.MLtzYb") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555558305d0) = 3492 ./strace-static-x86_64: Process 3492 attached [pid 3492] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3492] setsid() = 1 [pid 3492] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3492] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3492] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3492] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3492] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3492] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3492] unshare(CLONE_NEWNS) = 0 [pid 3492] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3492] unshare(CLONE_NEWIPC) = 0 [pid 3492] unshare(CLONE_NEWCGROUP) = 0 [pid 3492] unshare(CLONE_NEWUTS) = 0 [pid 3492] unshare(CLONE_SYSVSEM) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "16777216", 8) = 8 [pid 3492] close(3) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "536870912", 9) = 9 [pid 3492] close(3) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "1024", 4) = 4 [pid 3492] close(3) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "8192", 4) = 4 [pid 3492] close(3) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "1024", 4) = 4 [pid 3492] close(3) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "1024", 4) = 4 [pid 3492] close(3) = 0 [pid 3492] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3492] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3492] close(3) = 0 [pid 3492] getpid() = 1 [pid 3492] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 107.796513][ T3493] dump_stack_lvl+0x1c8/0x256 [ 107.801348][ T3493] dump_stack+0x1a/0x1c [ 107.805639][ T3493] panic+0x4d3/0xc69 [ 107.809684][ T3493] kmsan_report+0x2cc/0x2d0 [ 107.814328][ T3493] ? __msan_warning+0x92/0x110 [ 107.819167][ T3493] ? psi_show+0x701/0x810 [ 107.823575][ T3493] ? cgroup_io_pressure_show+0x2b6/0x2f0 [ 107.829324][ T3493] ? cgroup_seqfile_show+0x1fe/0x470 [ 107.834705][ T3493] ? kernfs_seq_show+0x13b/0x1f0 [ 107.839750][ T3493] ? seq_read_iter+0x926/0x20c0 [ 107.844682][ T3493] ? kernfs_fop_read_iter+0x1f2/0xa10 [ 107.850166][ T3493] ? generic_file_splice_read+0x1e5/0x770 [ 107.855986][ T3493] ? splice_direct_to_actor+0x5b2/0x1190 [ 107.861772][ T3493] ? do_splice_direct+0x252/0x3d0 [ 107.866947][ T3493] ? do_sendfile+0xbe9/0x1ba0 [ 107.871731][ T3493] ? __se_sys_sendfile64+0x202/0x2a0 [ 107.877111][ T3493] ? __x64_sys_sendfile64+0xb9/0x110 [ 107.882495][ T3493] ? do_syscall_64+0x3d/0xb0 [ 107.887159][ T3493] ? entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 107.893391][ T3493] ? collect_percpu_times+0x196e/0x19a0 [ 107.899075][ T3493] ? kmsan_internal_set_shadow_origin+0x62/0xe0 [ 107.905425][ T3493] ? kmsan_get_shadow_origin_ptr+0x49/0xa0 [ 107.911352][ T3493] __msan_warning+0x92/0x110 [ 107.916023][ T3493] psi_show+0x701/0x810 [ 107.920259][ T3493] cgroup_io_pressure_show+0x2b6/0x2f0 [ 107.925829][ T3493] ? cgroup_pressure_release+0x70/0x70 [ 107.931415][ T3493] cgroup_seqfile_show+0x1fe/0x470 [ 107.936679][ T3493] ? cgroup_file_release+0x280/0x280 [ 107.942067][ T3493] kernfs_seq_show+0x13b/0x1f0 [ 107.946967][ T3493] ? kernfs_seq_next+0x300/0x300 [ 107.951983][ T3493] seq_read_iter+0x926/0x20c0 [ 107.956751][ T3493] ? kmsan_get_shadow_origin_ptr+0x49/0xa0 [ 107.962709][ T3493] ? generic_file_splice_read+0x6e/0x770 [ 107.968493][ T3493] kernfs_fop_read_iter+0x1f2/0xa10 [ 107.973795][ T3493] ? kernfs_notify_workfn+0xbc0/0xbc0 [ 107.979279][ T3493] ? kernfs_notify_workfn+0xbc0/0xbc0 [ 107.984735][ T3493] generic_file_splice_read+0x1e5/0x770 [ 107.990406][ T3493] ? kmsan_get_shadow_origin_ptr+0x49/0xa0 [ 107.996383][ T3493] ? splice_shrink_spd+0xe0/0xe0 [ 108.001456][ T3493] splice_direct_to_actor+0x5b2/0x1190 [ 108.007039][ T3493] ? do_splice_direct+0x3d0/0x3d0 [ 108.012209][ T3493] do_splice_direct+0x252/0x3d0 [ 108.017150][ T3493] do_sendfile+0xbe9/0x1ba0 [ 108.021762][ T3493] __se_sys_sendfile64+0x202/0x2a0 [ 108.026982][ T3493] ? kmsan_get_shadow_origin_ptr+0x49/0xa0 [ 108.032896][ T3493] __x64_sys_sendfile64+0xb9/0x110 [ 108.038116][ T3493] do_syscall_64+0x3d/0xb0 [ 108.042625][ T3493] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 108.048659][ T3493] RIP: 0033:0x7f25dd00ade9 [ 108.053131][ T3493] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 108.072881][ T3493] RSP: 002b:00007ffcf4b29708 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 [ 108.081415][ T3493] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f25dd00ade9 [ 108.089487][ T3493] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 [ 108.097551][ T3493] RBP: 0000000000000000 R08: 00007ffcf4b29730 R09: 00007ffcf4b29730 [ 108.105609][ T3493] R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffcf4b2972c [ 108.113653][ T3493] R13: 00007ffcf4b29740 R14: 00007ffcf4b29780 R15: 0000000000000000 [ 108.121694][ T3493] [ 108.125006][ T3493] Kernel Offset: disabled [ 108.129377][ T3493] Rebooting in 86400 seconds..