./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1543907648 <...> Warning: Permanently added '10.128.0.188' (ED25519) to the list of known hosts. execve("./syz-executor1543907648", ["./syz-executor1543907648"], 0x7ffc8873c900 /* 10 vars */) = 0 brk(NULL) = 0x555572e99000 brk(0x555572e99e00) = 0x555572e99e00 arch_prctl(ARCH_SET_FS, 0x555572e99480) = 0 set_tid_address(0x555572e99750) = 289 set_robust_list(0x555572e99760, 24) = 0 rseq(0x555572e99da0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1543907648", 4096) = 28 getrandom("\x82\x7b\x05\x5b\xd1\xcf\x88\x8c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555572e99e00 brk(0x555572ebae00) = 0x555572ebae00 brk(0x555572ebb000) = 0x555572ebb000 mprotect(0x7f94c3ffa000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7f94c3f50d70, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f94c3f59a40}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f94c3f50d70, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f94c3f59a40}, NULL, 8) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555572e99750) = 290 ./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x555572e99760, 24) = 0 [pid 290] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 290] setsid() = 1 [pid 290] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 290] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 290] unshare(CLONE_NEWNS) = 0 [pid 290] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 290] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 290] unshare(CLONE_NEWCGROUP) = 0 [pid 290] unshare(CLONE_NEWUTS) = 0 [pid 290] unshare(CLONE_SYSVSEM) = 0 [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 290] getpid() = 1 [pid 290] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0f b6 04 30 84 c0 75 07 8b 03 5b 41 5e 5d c3 89 d9 80 e1 07 80 [ 24.664610][ T290] RSP: 0018:ffffc90000b074b8 EFLAGS: 00010203 [ 24.670514][ T290] RAX: 0000000000000001 RBX: 000000000000000c RCX: ffff8881210b62c0 [ 24.678483][ T290] RDX: 0000000000000000 RSI: ffffffff8686a330 RDI: 0000000000000000 [ 24.686312][ T290] RBP: ffffc90000b074c8 R08: 0000000000000007 R09: ffffffff81cb18f5 [ 24.694118][ T290] R10: 0000000000000002 R11: ffff8881210b62c0 R12: dffffc0000000000 [ 24.701930][ T290] R13: 1ffff92000160eb4 R14: dffffc0000000000 R15: ffff8881101e36c0 [ 24.709742][ T290] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.718509][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.724931][ T290] CR2: 00007f94c3ffe130 CR3: 000000010ca21000 CR4: 00000000003506a0 [ 24.732743][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.740552][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.748362][ T290] Call Trace: [ 24.751497][ T290] ? __die_body+0x62/0xb0 [ 24.755656][ T290] ? die_addr+0x9f/0xd0 [ 24.759651][ T290] ? exc_general_protection+0x3ff/0x490 [ 24.765035][ T290] ? asm_exc_general_protection+0x1e/0x30 [ 24.770589][ T290] ? posix_acl_create+0x135/0x400 [ 24.775446][ T290] ? current_umask+0x49/0x70 [ 24.779872][ T290] ? current_umask+0x16/0x70 [ 24.784298][ T290] posix_acl_create+0x169/0x400 [ 24.788988][ T290] ext4_init_acl+0xf3/0x400 [ 24.793325][ T290] ? __ext4_set_acl+0x5e0/0x5e0 [ 24.798013][ T290] ? prandom_u32+0x24c/0x290 [ 24.802441][ T290] __ext4_new_inode+0x2f6f/0x3ee0 [ 24.807306][ T290] ? ext4_has_group_desc_csum+0x1f0/0x1f0 [ 24.812853][ T290] ? dquot_initialize+0x20/0x20 [ 24.817541][ T290] ? may_create+0x65a/0x900 [ 24.821881][ T290] ext4_mknod+0x267/0x530 [ 24.826046][ T290] ? ext4_rmdir+0xa70/0xa70 [ 24.830387][ T290] ? selinux_inode_mknod+0x7b/0xa0 [ 24.835333][ T290] ? security_inode_mknod+0xc8/0x110 [ 24.840454][ T290] vfs_mknod+0x53f/0x610 [ 24.844535][ T290] ovl_cleanup_and_whiteout+0x1b1/0x580 [ 24.849916][ T290] ovl_do_remove+0x72a/0xc90 [ 24.854343][ T290] ? ovl_set_redirect+0x630/0x630 [ 24.859204][ T290] ? down_write+0xd7/0x150 [ 24.863455][ T290] ? down_read_killable+0x220/0x220 [ 24.868488][ T290] ? selinux_inode_rmdir+0x22/0x30 [ 24.873434][ T290] ovl_rmdir+0x1a/0x20 [ 24.877341][ T290] vfs_rmdir+0x2b7/0x3f0 [ 24.881417][ T290] incfs_kill_sb+0x108/0x220 [ 24.885846][ T290] deactivate_locked_super+0xad/0x110 [ 24.891057][ T290] deactivate_super+0xbe/0xf0 [ 24.895566][ T290] cleanup_mnt+0x45c/0x510 [ 24.899824][ T290] __cleanup_mnt+0x19/0x20 [ 24.904072][ T290] task_work_run+0x129/0x190 [ 24.908500][ T290] do_exit+0xc83/0x2a50 [ 24.912491][ T290] ? put_task_struct+0x80/0x80 [ 24.917093][ T290] ? _raw_spin_unlock_irq+0x4e/0x70 [ 24.922125][ T290] ? ptrace_notify+0x24c/0x350 [ 24.926727][ T290] ? do_notify_parent+0xa10/0xa10 [ 24.931584][ T290] ? debug_smp_processor_id+0x17/0x20 [ 24.936792][ T290] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 24.942693][ T290] do_group_exit+0x141/0x310 [ 24.947127][ T290] __x64_sys_exit_group+0x3f/0x40 [ 24.951979][ T290] do_syscall_64+0x34/0x70 [ 24.956234][ T290] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.961962][ T290] RIP: 0033:0x7f94c3f84809 [ 24.966214][ T290] Code: Unable to access opcode bytes at RIP 0x7f94c3f847df. [ 24.973416][ T290] RSP: 002b:00007ffe23be76b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 24.981661][ T290] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f94c3f84809 [ 24.989474][ T290] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 24.997283][ T290] RBP: 00007f94c40002b0 R08: ffffffffffffffb8 R09: 00007f94c3fd483c [ 25.005095][ T290] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f94c40002b0 [ 25.012906][ T290] R13: 0000000000000000 R14: 00007f94c4001020 R15: 00007f94c3f52b40 [ 25.020722][ T290] Modules linked in: [ 25.025773][ T290] ---[ end trace d0c7fb208f1297e2 ]--- [ 25.031139][ T290] RIP: 0010:current_umask+0x49/0x70 [ 25.036078][ T290] Code: 81 c3 c0 07 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 b5 a2 e9 ff 48 8b 1b 48 83 c3 0c 48 89 d8 48 c1 e8 03 <42> 0f b6 04 30 84 c0 75 07 8b 03 5b 41 5e 5d c3 89 d9 80 e1 07 80 [ 25.055592][ T290] RSP: 0018:ffffc90000b074b8 EFLAGS: 00010203 [ 25.061509][ T290] RAX: 0000000000000001 RBX: 000000000000000c RCX: ffff8881210b62c0 [ 25.069269][ T290] RDX: 0000000000000000 RSI: ffffffff8686a330 RDI: 0000000000000000 [ 25.077103][ T290] RBP: ffffc90000b074c8 R08: 0000000000000007 R09: ffffffff81cb18f5 [ 25.084875][ T290] R10: 0000000000000002 R11: ffff8881210b62c0 R12: dffffc0000000000 [ 25.092718][ T290] R13: 1ffff92000160eb4 R14: dffffc0000000000 R15: ffff8881101e36c0 [ 25.100499][ T290] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.109285][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.115669][ T290] CR2: 00007f94c3ffe130 CR3: 000000010ca21000 CR4: 00000000003506a0 [ 25.123538][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.131319][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.139254][ T290] Kernel panic - not syncing: Fatal exception [ 25.145412][ T290] Kernel Offset: disabled [ 25.149537][ T290] Rebooting in 86400 seconds..