./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1267942665 <...> forked to background, child pid 3184 no interfaces have a carrier [ 26.418577][ T3185] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.432181][ T3185] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. execve("./syz-executor1267942665", ["./syz-executor1267942665"], 0x7ffd7c0b2150 /* 10 vars */) = 0 brk(NULL) = 0x55555625f000 brk(0x55555625fc40) = 0x55555625fc40 arch_prctl(ARCH_SET_FS, 0x55555625f300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1267942665", 4096) = 28 brk(0x555556280c40) = 0x555556280c40 brk(0x555556281000) = 0x555556281000 mprotect(0x7fc8bc46f000, 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 mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) syzkaller login: [ 44.114431][ T3606] 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") = 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) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) [ 44.225503][ T3606] 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") = 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() = 3606 mkdir("./syzkaller.f9BkJR", 0700) = 0 chmod("./syzkaller.f9BkJR", 0777) = 0 chdir("./syzkaller.f9BkJR") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3607 attached , child_tidptr=0x55555625f5d0) = 3607 [pid 3607] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3607] setsid() = 1 [pid 3607] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3607] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3607] unshare(CLONE_NEWNS) = 0 [pid 3607] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3607] unshare(CLONE_NEWIPC) = 0 [pid 3607] unshare(CLONE_NEWCGROUP) = 0 [pid 3607] unshare(CLONE_NEWUTS) = 0 [pid 3607] unshare(CLONE_SYSVSEM) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "16777216", 8) = 8 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "536870912", 9) = 9 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "8192", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024", 4) = 4 [pid 3607] close(3) = 0 [pid 3607] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3607] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3607] close(3) = 0 [pid 3607] getpid() = 1 [pid 3607] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 3c 02 00 0f 85 4e 31 00 00 49 81 3e 60 64 51 8f 0f 84 4c f3 ff [ 44.491634][ T3608] RSP: 0018:ffffc9000382f7a8 EFLAGS: 00010002 [ 44.497724][ T3608] RAX: dffffc0000000000 RBX: 1ffff92000705f24 RCX: 0000000000000001 [ 44.505681][ T3608] RDX: 0000000000000025 RSI: 0000000000000000 RDI: 0000000000000001 [ 44.513657][ T3608] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 44.521624][ T3608] R10: fffffbfff1bbd2d2 R11: 0000000000000000 R12: 0000000000000000 [ 44.529588][ T3608] R13: ffff8880775dd880 R14: 0000000000000128 R15: 0000000000000001 [ 44.537557][ T3608] FS: 000055555625f300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 44.546486][ T3608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.553245][ T3608] CR2: 00007fc8bc473130 CR3: 00000000756ad000 CR4: 00000000003506f0 [ 44.561215][ T3608] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.569275][ T3608] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.577244][ T3608] Call Trace: [ 44.580518][ T3608] [ 44.583449][ T3608] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 44.589442][ T3608] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 44.595436][ T3608] ? lock_release+0x780/0x780 [ 44.600120][ T3608] ? enable_ptr_key_workfn+0x20/0x20 [ 44.605422][ T3608] lock_acquire+0x1ab/0x570 [ 44.609924][ T3608] ? binder_alloc_print_pages+0x64/0x440 [ 44.615558][ T3608] ? lock_release+0x780/0x780 [ 44.620233][ T3608] ? __mutex_lock+0x231/0x1350 [ 44.625004][ T3608] down_read+0x98/0x450 [ 44.629163][ T3608] ? binder_alloc_print_pages+0x64/0x440 [ 44.634795][ T3608] ? rwsem_down_read_slowpath+0xb10/0xb10 [ 44.640516][ T3608] ? stats_show+0x3cb/0x620 [ 44.645023][ T3608] ? do_raw_spin_lock+0x120/0x2a0 [ 44.650052][ T3608] binder_alloc_print_pages+0x64/0x440 [ 44.655517][ T3608] stats_show+0x417/0x620 [ 44.659851][ T3608] seq_read_iter+0x4f5/0x1280 [ 44.664970][ T3608] ? aa_file_perm+0x595/0x1230 [ 44.669740][ T3608] seq_read+0x16d/0x210 [ 44.673896][ T3608] ? seq_read_iter+0x1280/0x1280 [ 44.678829][ T3608] ? __switch_to+0x5cc/0x1050 [ 44.683518][ T3608] ? fsnotify_perm.part.0+0x221/0x610 [ 44.688894][ T3608] ? apparmor_file_permission+0x264/0x4e0 [ 44.694623][ T3608] full_proxy_read+0x118/0x180 [ 44.700188][ T3608] vfs_read+0x257/0x930 [ 44.704363][ T3608] ? full_proxy_write+0x180/0x180 [ 44.709427][ T3608] ? kernel_read+0x1c0/0x1c0 [ 44.714024][ T3608] ? find_held_lock+0x2d/0x110 [ 44.718795][ T3608] ? ptrace_notify+0xfa/0x140 [ 44.723479][ T3608] ? lock_downgrade+0x6e0/0x6e0 [ 44.728368][ T3608] ? __fget_light+0x20a/0x270 [ 44.733058][ T3608] ksys_read+0x127/0x250 [ 44.737308][ T3608] ? vfs_write+0xdd0/0xdd0 [ 44.741735][ T3608] ? lockdep_hardirqs_on+0x79/0x100 [ 44.746947][ T3608] ? _raw_spin_unlock_irq+0x2a/0x40 [ 44.752165][ T3608] ? ptrace_notify+0xfa/0x140 [ 44.756854][ T3608] do_syscall_64+0x35/0xb0 [ 44.761284][ T3608] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 44.767181][ T3608] RIP: 0033:0x7fc8bc400d89 [ 44.771600][ T3608] 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 [ 44.791221][ T3608] RSP: 002b:00007ffd55bb67d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 44.799746][ T3608] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc8bc400d89 [ 44.807747][ T3608] RDX: 0000000000002053 RSI: 0000000020004200 RDI: 0000000000000003 [ 44.815719][ T3608] RBP: 0000000000000000 R08: 00007ffd55bb6800 R09: 00007ffd55bb6800 [ 44.823691][ T3608] R10: 00007ffd55bb6800 R11: 0000000000000246 R12: 00007ffd55bb67fc [ 44.831753][ T3608] R13: 00007ffd55bb6810 R14: 00007ffd55bb6850 R15: 0000000000000000 [ 44.839828][ T3608] [ 44.842934][ T3608] Modules linked in: [ 44.846832][ T3608] ---[ end trace 0000000000000000 ]--- [ 44.852281][ T3608] RIP: 0010:__lock_acquire+0xd83/0x56d0 [ 44.857840][ T3608] Code: 9b 0e 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 23 46 9b 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 4e 31 00 00 49 81 3e 60 64 51 8f 0f 84 4c f3 ff [ 44.877552][ T3608] RSP: 0018:ffffc9000382f7a8 EFLAGS: 00010002 [ 44.883634][ T3608] RAX: dffffc0000000000 RBX: 1ffff92000705f24 RCX: 0000000000000001 [ 44.891604][ T3608] RDX: 0000000000000025 RSI: 0000000000000000 RDI: 0000000000000001 [ 44.899580][ T3608] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 [ 44.907547][ T3608] R10: fffffbfff1bbd2d2 R11: 0000000000000000 R12: 0000000000000000 [ 44.915513][ T3608] R13: ffff8880775dd880 R14: 0000000000000128 R15: 0000000000000001 [ 44.923481][ T3608] FS: 000055555625f300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 44.932416][ T3608] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.939015][ T3608] CR2: 00007fc8bc473130 CR3: 00000000756ad000 CR4: 00000000003506f0 [ 44.947004][ T3608] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.954972][ T3608] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.962949][ T3608] Kernel panic - not syncing: Fatal exception [ 44.969176][ T3608] Kernel Offset: disabled [ 44.973529][ T3608] Rebooting in 86400 seconds..