./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3842915003 <...> forked to background, child pid 3186 no interfaces have a carrier [ 26.736907][ T3187] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.746958][ T3187] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.3' (ECDSA) to the list of known hosts. execve("./syz-executor3842915003", ["./syz-executor3842915003"], 0x7ffdd5eb7a00 /* 10 vars */) = 0 brk(NULL) = 0x555556907000 brk(0x555556907c40) = 0x555556907c40 arch_prctl(ARCH_SET_FS, 0x555556907300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3842915003", 4096) = 28 brk(0x555556928c40) = 0x555556928c40 brk(0x555556929000) = 0x555556929000 mprotect(0x7f621d932000, 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 syzkaller login: [ 49.748307][ T3614] 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) [ 49.895811][ T3614] 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() = 3614 mkdir("./syzkaller.JEc2Kv", 0700) = 0 chmod("./syzkaller.JEc2Kv", 0777) = 0 chdir("./syzkaller.JEc2Kv") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3616 attached , child_tidptr=0x5555569075d0) = 3616 [pid 3616] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3616] setsid() = 1 [pid 3616] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3616] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3616] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3616] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3616] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3616] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3616] unshare(CLONE_NEWNS) = 0 [pid 3616] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3616] unshare(CLONE_NEWIPC) = 0 [pid 3616] unshare(CLONE_NEWCGROUP) = 0 [pid 3616] unshare(CLONE_NEWUTS) = 0 [pid 3616] unshare(CLONE_SYSVSEM) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "16777216", 8) = 8 [pid 3616] close(3) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "536870912", 9) = 9 [pid 3616] close(3) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "1024", 4) = 4 [pid 3616] close(3) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "8192", 4) = 4 [pid 3616] close(3) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "1024", 4) = 4 [pid 3616] close(3) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "1024", 4) = 4 [pid 3616] close(3) = 0 [pid 3616] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3616] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3616] close(3) = 0 [pid 3616] getpid() = 1 [pid 3616] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 3617] chdir("./0") = 0 [pid 3617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3617] setpgid(0, 0) = 0 [pid 3617] symlink("/syzcgroup/unified/syz0", "./cgroup" [pid 3616] <... clone resumed>, child_tidptr=0x5555569075d0) = 2 [pid 3617] <... symlink resumed>) = 0 [pid 3617] symlink("/syzcgroup/cpu/syz0", "./cgroup.cpu") = 0 [pid 3617] symlink("/syzcgroup/net/syz0", "./cgroup.net") = 0 [pid 3617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3617] write(3, "1000", 4) = 4 [pid 3617] close(3) = 0 [pid 3617] symlink("/dev/binderfs", "./binderfs") = 0 [pid 3617] mkdirat(AT_FDCWD, "./cgroup.net/syz1", 0777) = 0 [pid 3617] openat(AT_FDCWD, "./cgroup.net/syz1", O_RDWR|O_PATH) = 3 [pid 3617] openat(AT_FDCWD, "/proc/self/fd/3", O_RDWR) = -1 EISDIR (Is a directory) [pid 3617] openat(AT_FDCWD, "/proc/self/fd/3", O_RDONLY) = 4 [ 50.111698][ T3617] general protection fault, probably for non-canonical address 0xdffffc0000000012: 0000 [#1] PREEMPT SMP KASAN [ 50.123479][ T3617] KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] [ 50.131887][ T3617] CPU: 1 PID: 3617 Comm: syz-executor384 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0 [ 50.141958][ T3617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 50.152031][ T3617] RIP: 0010:kernfs_get_inode+0x2e/0x520 [ 50.157611][ T3617] Code: 41 56 41 55 41 54 49 89 fc 53 48 89 f3 e8 1a 04 7e ff 48 8d bb 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3a 04 00 00 48 8b b3 90 00 00 00 4c 89 e7 e8 79 [ 50.177214][ T3617] RSP: 0018:ffffc90003c8fa30 EFLAGS: 00010206 [ 50.183375][ T3617] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 50.191347][ T3617] RDX: 0000000000000012 RSI: ffffffff81fd1156 RDI: 0000000000000090 [ 50.199323][ T3617] RBP: ffffc90003c8fa50 R08: 0000000000000005 R09: 0000000000000000 [ 50.207295][ T3617] R10: 0000000000000001 R11: 0000000000000024 R12: ffff8880224ba000 [ 50.215270][ T3617] R13: ffff888075922000 R14: ffff88801ebf0000 R15: ffff8880211ae000 [ 50.223247][ T3617] FS: 0000555556907300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 50.232183][ T3617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.238775][ T3617] CR2: 0000000020000200 CR3: 000000001c179000 CR4: 00000000003506e0 [ 50.246750][ T3617] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.254806][ T3617] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.262780][ T3617] Call Trace: [ 50.266066][ T3617] [ 50.268997][ T3617] cgroup_may_write+0x86/0x120 [ 50.273772][ T3617] cgroup_can_fork+0x961/0xec0 [ 50.278555][ T3617] copy_process+0x43ed/0x7090 [ 50.283256][ T3617] ? __cleanup_sighand+0xb0/0xb0 [ 50.288205][ T3617] ? _copy_from_user+0xf9/0x170 [ 50.293105][ T3617] kernel_clone+0xe7/0xab0 [ 50.297545][ T3617] ? create_io_thread+0xe0/0xe0 [ 50.302417][ T3617] ? do_raw_spin_lock+0x120/0x2a0 [ 50.307455][ T3617] __do_sys_clone3+0x1cd/0x2e0 [ 50.312226][ T3617] ? __do_sys_clone+0x100/0x100 [ 50.317108][ T3617] ? lock_downgrade+0x6e0/0x6e0 [ 50.321986][ T3617] ? _raw_spin_unlock_irq+0x1f/0x40 [ 50.327209][ T3617] ? _raw_spin_unlock_irq+0x1f/0x40 [ 50.332424][ T3617] ? lockdep_hardirqs_on+0x79/0x100 [ 50.337639][ T3617] ? _raw_spin_unlock_irq+0x2a/0x40 [ 50.342850][ T3617] ? ptrace_notify+0xfa/0x140 [ 50.347532][ T3617] do_syscall_64+0x35/0xb0 [ 50.351966][ T3617] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.357872][ T3617] RIP: 0033:0x7f621d8c3e99 [ 50.362287][ T3617] 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 [ 50.381904][ T3617] RSP: 002b:00007ffcaa952ec8 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 [ 50.390322][ T3617] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f621d8c3e99 [ 50.398469][ T3617] RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007ffcaa952f40 [ 50.406546][ T3617] RBP: 0000000000000000 R08: 00007ffcaa952d60 R09: 00007ffcaa952ef0 [ 50.414538][ T3617] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffcaa952eec [ 50.422522][ T3617] R13: 00007ffcaa952f00 R14: 00007ffcaa952f40 R15: 0000000000000000 [ 50.430507][ T3617] [ 50.433521][ T3617] Modules linked in: [ 50.437733][ T3617] ---[ end trace 0000000000000000 ]--- [ 50.443380][ T3617] RIP: 0010:kernfs_get_inode+0x2e/0x520 [ 50.449035][ T3617] Code: 41 56 41 55 41 54 49 89 fc 53 48 89 f3 e8 1a 04 7e ff 48 8d bb 90 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 3a 04 00 00 48 8b b3 90 00 00 00 4c 89 e7 e8 79 [ 50.468742][ T3617] RSP: 0018:ffffc90003c8fa30 EFLAGS: 00010206 [ 50.474863][ T3617] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 50.482956][ T3617] RDX: 0000000000000012 RSI: ffffffff81fd1156 RDI: 0000000000000090 [ 50.490966][ T3617] RBP: ffffc90003c8fa50 R08: 0000000000000005 R09: 0000000000000000 [ 50.498994][ T3617] R10: 0000000000000001 R11: 0000000000000024 R12: ffff8880224ba000 [ 50.507016][ T3617] R13: ffff888075922000 R14: ffff88801ebf0000 R15: ffff8880211ae000 [ 50.515038][ T3617] FS: 0000555556907300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 50.524011][ T3617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.530591][ T3617] CR2: 00007ffcaa9cb8f0 CR3: 000000001c179000 CR4: 00000000003506f0 [ 50.538666][ T3617] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.546695][ T3617] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.554723][ T3617] Kernel panic - not syncing: Fatal exception [ 50.560968][ T3617] Kernel Offset: disabled [ 50.565287][ T3617] Rebooting in 86400 seconds..