./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4069859627 <...> Warning: Permanently added '10.128.0.255' (ED25519) to the list of known hosts. execve("./syz-executor4069859627", ["./syz-executor4069859627"], 0x7ffef3896900 /* 10 vars */) = 0 brk(NULL) = 0x555556851000 brk(0x555556851d40) = 0x555556851d40 arch_prctl(ARCH_SET_FS, 0x5555568513c0) = 0 set_tid_address(0x555556851690) = 292 set_robust_list(0x5555568516a0, 24) = 0 rseq(0x555556851ce0, 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-executor4069859627", 4096) = 28 getrandom("\x86\x1d\x0a\x66\xf5\x30\x07\xa9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556851d40 brk(0x555556872d40) = 0x555556872d40 brk(0x555556873000) = 0x555556873000 mprotect(0x7f767b70b000, 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 getpid() = 292 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "292", 3) = 3 close(3) = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 293 ./strace-static-x86_64: Process 293 attached [pid 293] set_robust_list(0x5555568516a0, 24) = 0 [pid 293] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 293] setsid() = 1 [pid 293] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 293] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 293] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 293] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 293] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 293] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 293] unshare(CLONE_NEWNS) = 0 [pid 293] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 293] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 293] unshare(CLONE_NEWCGROUP) = 0 [pid 293] unshare(CLONE_NEWUTS) = 0 [pid 293] unshare(CLONE_SYSVSEM) = 0 [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 293] getpid() = 1 [pid 293] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< {parent_tid=[3]}, 88) = 3 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 296] memfd_create("syzkaller", 0) = 3 [pid 296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [ 20.289950][ T30] audit: type=1400 audit(1699697528.159:66): avc: denied { execmem } for pid=292 comm="syz-executor406" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.294019][ T30] audit: type=1400 audit(1699697528.159:67): avc: denied { integrity } for pid=292 comm="syz-executor406" lockdown_reason="debugfs access" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=lockdown permissive=1 [ 20.300253][ T30] audit: type=1400 audit(1699697528.159:68): avc: denied { mounton } for pid=293 comm="syz-executor406" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [ 20.305175][ T30] audit: type=1400 audit(1699697528.159:69): avc: denied { mount } for pid=293 comm="syz-executor406" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 20.311751][ T30] audit: type=1400 audit(1699697528.159:70): avc: denied { mounton } for pid=293 comm="syz-executor406" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [ 20.333145][ T30] audit: type=1400 audit(1699697528.179:71): avc: denied { mounton } for pid=293 comm="syz-executor406" path="/dev/binderfs" dev="devtmpfs" ino=362 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1 [ 20.356446][ T30] audit: type=1400 audit(1699697528.179:72): avc: denied { mount } for pid=293 comm="syz-executor406" name="/" dev="binder" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 20.378800][ T30] audit: type=1400 audit(1699697528.179:73): avc: denied { read write } for pid=293 comm="syz-executor406" name="loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.402842][ T30] audit: type=1400 audit(1699697528.179:74): avc: denied { open } for pid=293 comm="syz-executor406" path="/dev/loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 20.426894][ T30] audit: type=1400 audit(1699697528.179:75): avc: denied { ioctl } for pid=293 comm="syz-executor406" path="/dev/loop0" dev="devtmpfs" ino=112 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 296] munmap(0x7f7673215000, 138412032) = 0 [pid 296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 296] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 296] close(3) = 0 [pid 296] mkdir("./bus", 0777) = 0 [ 20.710348][ T296] loop0: detected capacity change from 0 to 131072 [ 20.718702][ T296] F2FS-fs (loop0): Invalid Fs Meta Ino: node(257) meta(2) root(3) [ 20.726502][ T296] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock [ 20.735221][ T296] F2FS-fs (loop0): invalid crc value [ 20.741908][ T296] F2FS-fs (loop0): Found nat_bits in checkpoint [pid 296] mount("/dev/loop0", "./bus", "f2fs", 0, "") = 0 [pid 296] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 296] chdir("./bus") = 0 [pid 296] ioctl(4, LOOP_CLR_FD) = 0 [pid 296] close(4) = 0 [pid 296] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 4 [pid 296] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [pid 296] ioctl(4, F2FS_IOC_START_ATOMIC_WRITE, 0) = 0 [pid 296] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 296] <... futex resumed>) = 1 [ 20.763627][ T296] F2FS-fs (loop0): Try to recover 1th superblock, ret: 0 [ 20.770508][ T296] F2FS-fs (loop0): Mounted with checkpoint version = 48b305e4 [pid 296] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 294] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 294] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 294] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[4]}, 88) = 4 [pid 294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 294] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 302 attached [pid 302] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 302] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 4, 0) = 0x20000000 [pid 302] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 294] <... futex resumed>) = 0 [pid 294] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 294] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 302] <... futex resumed>) = 1 [pid 302] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 302] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 294] <... futex resumed>) = ? [pid 296] <... write resumed>) = ? [pid 296] +++ killed by SIGSYS (core dumped) +++ [ 20.861664][ T302] BUG: scheduling while atomic: syz-executor406/302/0x00000002 [ 20.869035][ T302] Modules linked in: [ 20.872804][ T302] Preemption disabled at: [ 20.872814][ T302] [] unmap_page_range+0xa2f/0x1ca0 [ 20.883468][ T302] CPU: 0 PID: 302 Comm: syz-executor406 Not tainted 5.15.137-syzkaller-01792-g61cfd264993d #0 [ 20.893505][ T302] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 20.903487][ T302] Call Trace: [ 20.906618][ T302] [ 20.909388][ T302] dump_stack_lvl+0x151/0x1b7 [ 20.913913][ T302] ? unmap_page_range+0xa2f/0x1ca0 [ 20.918936][ T302] ? unmap_page_range+0xa2f/0x1ca0 [ 20.923885][ T302] ? io_uring_drop_tctx_refs+0x190/0x190 [ 20.929622][ T302] ? unmap_page_range+0xa2f/0x1ca0 [ 20.934497][ T302] dump_stack+0x15/0x17 [ 20.938487][ T302] __schedule_bug+0x195/0x260 [ 20.943000][ T302] ? irqentry_exit+0x30/0x40 [ 20.947430][ T302] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 20.953073][ T302] ? ttwu_queue_wakelist+0x510/0x510 [ 20.958194][ T302] __schedule+0xd0b/0x1580 [ 20.962920][ T302] ? mutex_spin_on_owner+0x479/0x500 [ 20.968040][ T302] ? release_firmware_map_entry+0x18f/0x18f [ 20.973766][ T302] ? __mutex_add_waiter+0x310/0x310 [ 20.978802][ T302] schedule+0x11f/0x1e0 [ 20.982807][ T302] schedule_preempt_disabled+0x13/0x20 [ 20.988182][ T302] __mutex_lock+0x5b5/0x1870 [ 20.992598][ T302] ? slab_post_alloc_hook+0x53/0x2c0 [ 20.997789][ T302] ? f2fs_register_inmem_page+0x13f/0x4b0 [ 21.003284][ T302] ? set_page_dirty+0x1a4/0x300 [ 21.007962][ T302] ? unmap_page_range+0xf33/0x1ca0 [ 21.012908][ T302] ? unmap_vmas+0x389/0x560 [ 21.017251][ T302] ? exit_mmap+0x3d8/0x6f0 [ 21.021504][ T302] ? __mmput+0x95/0x310 [ 21.025494][ T302] ? mmput+0x5b/0x170 [ 21.029399][ T302] ? do_exit+0xbb4/0x2b60 [ 21.033570][ T302] ? __ww_mutex_lock_interruptible_slowpath+0x20/0x20 [ 21.040164][ T302] ? exit_to_user_mode_loop+0xa0/0xe0 [ 21.045543][ T302] ? exit_to_user_mode_prepare+0x5a/0xa0 [ 21.051008][ T302] ? syscall_exit_to_user_mode+0x26/0x160 [ 21.056566][ T302] ? do_syscall_64+0x49/0xb0 [ 21.061005][ T302] ? entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.066905][ T302] __mutex_lock_slowpath+0xe/0x10 [ 21.071884][ T302] mutex_lock+0x135/0x1e0 [ 21.076049][ T302] ? slab_post_alloc_hook+0x72/0x2c0 [ 21.081166][ T302] ? wait_for_completion_killable_timeout+0x10/0x10 [ 21.087711][ T302] ? kmem_cache_alloc+0xf5/0x200 [ 21.092481][ T302] f2fs_register_inmem_page+0x22c/0x4b0 [ 21.097866][ T302] f2fs_set_data_page_dirty+0x591/0x730 [ 21.103351][ T302] set_page_dirty+0x1a4/0x300 [ 21.107869][ T302] unmap_page_range+0xf33/0x1ca0 [ 21.112628][ T302] ? __activate_page+0xd24/0x1110 [ 21.117494][ T302] ? mmu_notifier_invalidate_range_end+0xe0/0xe0 [ 21.123645][ T302] ? pagevec_lru_move_fn+0x48d/0x520 [ 21.128772][ T302] ? uprobe_munmap+0x18d/0x450 [ 21.133369][ T302] ? rotate_reclaimable_page+0x670/0x670 [ 21.138838][ T302] ? finish_task_switch+0x167/0x7b0 [ 21.143874][ T302] unmap_vmas+0x389/0x560 [ 21.148047][ T302] ? unmap_page_range+0x1ca0/0x1ca0 [ 21.153109][ T302] ? tlb_gather_mmu_fullmm+0x165/0x210 [ 21.158366][ T302] exit_mmap+0x3d8/0x6f0 [ 21.162445][ T302] ? exit_aio+0x25e/0x3c0 [ 21.166609][ T302] ? vm_brk+0x30/0x30 [ 21.170427][ T302] ? mutex_unlock+0xb2/0x260 [ 21.174863][ T302] ? uprobe_clear_state+0x2cd/0x320 [ 21.179979][ T302] __mmput+0x95/0x310 [ 21.183796][ T302] mmput+0x5b/0x170 [ 21.187442][ T302] do_exit+0xbb4/0x2b60 [ 21.191435][ T302] ? simple_acl_create+0x2c0/0x2c0 [ 21.196817][ T302] ? put_task_struct+0x80/0x80 [ 21.201416][ T302] do_group_exit+0x141/0x310 [ 21.208904][ T302] get_signal+0x7a3/0x1630 [ 21.213249][ T302] arch_do_signal_or_restart+0xbd/0x1680 [ 21.218719][ T302] ? __send_signal+0x96f/0xcb0 [ 21.223306][ T302] ? send_signal+0x43a/0x590 [ 21.227732][ T302] ? get_sigframe_size+0x10/0x10 [ 21.232592][ T302] ? _raw_spin_unlock_irqrestore+0x5c/0x80 [ 21.238234][ T302] ? force_sig_info_to_task+0x31c/0x440 [ 21.243717][ T302] ? trigger_sigsys+0xac/0xd0 [ 21.248223][ T302] exit_to_user_mode_loop+0xa0/0xe0 [ 21.253250][ T302] exit_to_user_mode_prepare+0x5a/0xa0 [ 21.258544][ T302] syscall_exit_to_user_mode+0x26/0x160 [ 21.263923][ T302] do_syscall_64+0x49/0xb0 [ 21.268262][ T302] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.273996][ T302] RIP: 0033:0x7f767b680459 [ 21.278244][ T302] Code: Unable to access opcode bytes at RIP 0x7f767b68042f. [ 21.285448][ T302] RSP: 002b:00007f767b614228 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 21.293694][ T302] RAX: 00000000000000ca RBX: 00007f767b711618 RCX: 00007f767b680459 [ 21.301504][ T302] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f767b71161c [ 21.309316][ T302] RBP: 00007f767b711610 R08: 00007f767b6146c0 R09: 00007f767b6146c0 [ 21.317128][ T302] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f767b71161c [ 21.324939][ T302] R13: 00007f767b6dd9d0 R14: 00007f767b6cd400 R15: 00007ffc306b4c68 [ 21.332754][ T302] [ 21.337909][ T302] ------------[ cut here ]------------ [ 21.343344][ T302] DEBUG_LOCKS_WARN_ON(val > preempt_count()) [ 21.343423][ T302] WARNING: CPU: 1 PID: 302 at kernel/sched/core.c:5644 preempt_count_sub+0xa8/0x160 [ 21.358476][ T302] Modules linked in: [ 21.362218][ T302] CPU: 1 PID: 302 Comm: syz-executor406 Tainted: G W 5.15.137-syzkaller-01792-g61cfd264993d #0 [ 21.373651][ T302] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 21.383552][ T302] RIP: 0010:preempt_count_sub+0xa8/0x160 [ 21.389182][ T302] Code: 03 42 0f b6 04 30 84 c0 0f 85 86 00 00 00 83 3d 65 38 ba 05 00 75 d1 48 c7 c7 a0 8d 28 85 48 c7 c6 40 8e 28 85 e8 88 64 f5 ff <0f> 0b eb ba e8 9f eb 14 01 85 c0 74 b1 48 c7 c0 e8 46 06 87 48 c1 [ 21.408806][ T302] RSP: 0018:ffffc90000a274c8 EFLAGS: 00010246 [ 21.414788][ T302] RAX: 4ab8522e2b066000 RBX: 0000000000000001 RCX: ffff88811e36cf00 [ 21.422610][ T302] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 [ 21.430408][ T302] RBP: ffffc90000a274d8 R08: ffffffff81574165 R09: ffffed103ee04e93 [ 21.438212][ T302] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 21.446040][ T302] R13: 0400000000000080 R14: dffffc0000000000 R15: 0000000020200000 [ 21.453888][ T302] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.462608][ T302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.469014][ T302] CR2: 0000000021000000 CR3: 000000011de22000 CR4: 00000000003506a0 [ 21.476870][ T302] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.484673][ T302] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.492483][ T302] Call Trace: [ 21.495573][ T302] [ 21.498347][ T302] ? show_regs+0x58/0x60 [ 21.502453][ T302] ? __warn+0x160/0x2f0 [ 21.506428][ T302] ? preempt_count_sub+0xa8/0x160 [ 21.511306][ T302] ? report_bug+0x3d9/0x5b0 [ 21.515621][ T302] ? preempt_count_sub+0xa8/0x160 [ 21.520506][ T302] ? handle_bug+0x41/0x70 [ 21.524647][ T302] ? exc_invalid_op+0x1b/0x50 [ 21.529301][ T302] ? asm_exc_invalid_op+0x1b/0x20 [ 21.534198][ T302] ? __wake_up_klogd+0xd5/0x110 [ 21.538830][ T302] ? preempt_count_sub+0xa8/0x160 [ 21.543721][ T302] ? preempt_count_sub+0xa8/0x160 [ 21.548550][ T302] _raw_spin_unlock+0x4d/0x70 [ 21.553087][ T302] unmap_page_range+0x1a8c/0x1ca0 [ 21.557968][ T302] ? __activate_page+0xd24/0x1110 [ 21.562829][ T302] ? mmu_notifier_invalidate_range_end+0xe0/0xe0 [ 21.568944][ T302] ? pagevec_lru_move_fn+0x48d/0x520 [ 21.574095][ T302] ? uprobe_munmap+0x18d/0x450 [ 21.578668][ T302] ? rotate_reclaimable_page+0x670/0x670 [ 21.584264][ T302] ? finish_task_switch+0x167/0x7b0 [ 21.589259][ T302] unmap_vmas+0x389/0x560 [ 21.593465][ T302] ? unmap_page_range+0x1ca0/0x1ca0 [ 21.598457][ T302] ? tlb_gather_mmu_fullmm+0x165/0x210 [ 21.603867][ T302] exit_mmap+0x3d8/0x6f0 [ 21.607921][ T302] ? exit_aio+0x25e/0x3c0 [ 21.612101][ T302] ? vm_brk+0x30/0x30 [ 21.615913][ T302] ? mutex_unlock+0xb2/0x260 [ 21.620357][ T302] ? uprobe_clear_state+0x2cd/0x320 [ 21.625362][ T302] __mmput+0x95/0x310 [ 21.629184][ T302] mmput+0x5b/0x170 [ 21.632851][ T302] do_exit+0xbb4/0x2b60 [ 21.636820][ T302] ? simple_acl_create+0x2c0/0x2c0 [ 21.641898][ T302] ? put_task_struct+0x80/0x80 [ 21.646455][ T302] do_group_exit+0x141/0x310 [ 21.650920][ T302] get_signal+0x7a3/0x1630 [ 21.655135][ T302] arch_do_signal_or_restart+0xbd/0x1680 [ 21.660637][ T302] ? __send_signal+0x96f/0xcb0 [ 21.665202][ T302] ? send_signal+0x43a/0x590 [ 21.669662][ T302] ? get_sigframe_size+0x10/0x10 [ 21.674399][ T302] ? _raw_spin_unlock_irqrestore+0x5c/0x80 [ 21.680070][ T302] ? force_sig_info_to_task+0x31c/0x440 [ 21.685426][ T302] ? trigger_sigsys+0xac/0xd0 [ 21.689963][ T302] exit_to_user_mode_loop+0xa0/0xe0 [ 21.694973][ T302] exit_to_user_mode_prepare+0x5a/0xa0 [ 21.700298][ T302] syscall_exit_to_user_mode+0x26/0x160 [ 21.705648][ T302] do_syscall_64+0x49/0xb0 [ 21.709925][ T302] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.715653][ T302] RIP: 0033:0x7f767b680459 [ 21.719912][ T302] Code: Unable to access opcode bytes at RIP 0x7f767b68042f. [ 21.727085][ T302] RSP: 002b:00007f767b614228 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 21.735558][ T302] RAX: 00000000000000ca RBX: 00007f767b711618 RCX: 00007f767b680459 [ 21.743344][ T302] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f767b71161c [ 21.751150][ T302] RBP: 00007f767b711610 R08: 00007f767b6146c0 R09: 00007f767b6146c0 [pid 302] +++ killed by SIGSYS (core dumped) +++ [pid 294] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=2, si_uid=0, si_status=SIGSYS, si_utime=18, si_stime=77} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 5 ./strace-static-x86_64: Process 304 attached [pid 304] set_robust_list(0x5555568516a0, 24) = 0 [pid 304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 304] setpgid(0, 0) = 0 [pid 304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 304] write(3, "1000", 4) = 4 [pid 304] close(3) = 0 [pid 304] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 304] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 304] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[6]}, 88) = 6 [pid 304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 304] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 305 attached [pid 305] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] memfd_create("syzkaller", 0) = 3 [pid 305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [ 21.758949][ T302] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f767b71161c [ 21.766870][ T302] R13: 00007f767b6dd9d0 R14: 00007f767b6cd400 R15: 00007ffc306b4c68 [ 21.774670][ T302] [ 21.777511][ T302] ---[ end trace e63ebe89ec3bf6a9 ]--- [pid 305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 305] munmap(0x7f7673215000, 138412032) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 305] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(4, LOOP_CLR_FD) = 0 [pid 305] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 305] close(4) = 0 [pid 305] close(3) = 0 [pid 305] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 305] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 304] <... futex resumed>) = 0 [pid 304] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... futex resumed>) = 0 [pid 305] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 305] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... futex resumed>) = 0 [pid 304] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... futex resumed>) = 1 [pid 305] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 305] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... futex resumed>) = 0 [pid 304] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... futex resumed>) = 1 [pid 305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 304] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 304] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 304] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[7]}, 88) = 7 ./strace-static-x86_64: Process 306 attached [pid 304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 304] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 304] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 305] <... write resumed>) = 9383936 [pid 305] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 305] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 306] <... mmap resumed>) = 0x20000000 [pid 306] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... futex resumed>) = 0 [pid 304] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 304] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] <... futex resumed>) = 0 [pid 305] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 305] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 304] <... futex resumed>) = ? [pid 306] <... futex resumed>) = ? [pid 306] +++ killed by SIGSYS (core dumped) +++ [pid 305] +++ killed by SIGSYS (core dumped) +++ [pid 304] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5, si_uid=0, si_status=SIGSYS, si_utime=13, si_stime=33} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 8 ./strace-static-x86_64: Process 307 attached [pid 307] set_robust_list(0x5555568516a0, 24) = 0 [pid 307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 307] setpgid(0, 0) = 0 [pid 307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 307] write(3, "1000", 4) = 4 [pid 307] close(3) = 0 [pid 307] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 307] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 307] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[9]}, 88) = 9 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 308 attached [pid 308] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] memfd_create("syzkaller", 0) = 3 [pid 308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [ 22.337577][ T305] syz-executor406 (305) used greatest stack depth: 20880 bytes left [pid 308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 308] munmap(0x7f7673215000, 138412032) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 308] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 308] ioctl(4, LOOP_CLR_FD) = 0 [pid 308] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 308] close(4) = 0 [pid 308] close(3) = 0 [pid 308] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 308] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... futex resumed>) = 0 [pid 308] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 308] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... futex resumed>) = 1 [pid 308] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 308] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 308] <... futex resumed>) = 1 [pid 308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 307] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 307] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 307] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 307] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 307] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[10]}, 88) = 10 [pid 307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 307] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 307] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 310 attached [pid 310] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 308] <... write resumed>) = 9265152 [pid 308] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 310] <... mmap resumed>) = 0x20000000 [pid 310] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 307] <... futex resumed>) = 0 [pid 307] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 307] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... futex resumed>) = 1 [pid 310] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 308] <... futex resumed>) = 0 [pid 308] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 308] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 307] <... futex resumed>) = ? [pid 310] <... futex resumed>) = ? [pid 310] +++ killed by SIGSYS (core dumped) +++ [pid 308] +++ killed by SIGSYS (core dumped) +++ [pid 307] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=8, si_uid=0, si_status=SIGSYS, si_utime=14, si_stime=37} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 11 ./strace-static-x86_64: Process 311 attached [pid 311] set_robust_list(0x5555568516a0, 24) = 0 [pid 311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 311] setpgid(0, 0) = 0 [pid 311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 311] write(3, "1000", 4) = 4 [pid 311] close(3) = 0 [pid 311] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 311] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 311] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0}./strace-static-x86_64: Process 312 attached [pid 312] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 312] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] <... clone3 resumed> => {parent_tid=[12]}, 88) = 12 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 311] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 312] <... futex resumed>) = 0 [pid 312] memfd_create("syzkaller", 0) = 3 [pid 312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 311] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 312] munmap(0x7f7673215000, 138412032) = 0 [pid 312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 312] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 312] ioctl(4, LOOP_CLR_FD) = 0 [pid 312] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 312] close(4) = 0 [pid 312] close(3) = 0 [pid 312] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... futex resumed>) = 0 [pid 311] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... futex resumed>) = 1 [pid 312] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 312] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... futex resumed>) = 0 [pid 311] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... futex resumed>) = 1 [pid 312] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 312] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... futex resumed>) = 0 [pid 311] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... futex resumed>) = 1 [pid 312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 311] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 311] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 311] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 311] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 311] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 313 attached => {parent_tid=[13]}, 88) = 13 [pid 313] set_robust_list(0x7f767b6149a0, 24 [pid 311] rt_sigprocmask(SIG_SETMASK, [], [pid 313] <... set_robust_list resumed>) = 0 [pid 313] rt_sigprocmask(SIG_SETMASK, [], [pid 311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 311] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 311] <... futex resumed>) = 0 [pid 313] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 311] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... write resumed>) = 8495104 [pid 312] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 312] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] <... mmap resumed>) = 0x20000000 [pid 313] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 313] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] <... futex resumed>) = 0 [pid 311] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 311] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 312] <... futex resumed>) = 0 [pid 312] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 312] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 311] <... futex resumed>) = ? [pid 313] <... futex resumed>) = ? [pid 313] +++ killed by SIGSYS (core dumped) +++ [pid 312] +++ killed by SIGSYS (core dumped) +++ [pid 311] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=11, si_uid=0, si_status=SIGSYS, si_utime=14, si_stime=37} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 14 ./strace-static-x86_64: Process 314 attached [pid 314] set_robust_list(0x5555568516a0, 24) = 0 [pid 314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 314] setpgid(0, 0) = 0 [pid 314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 314] write(3, "1000", 4) = 4 [pid 314] close(3) = 0 [pid 314] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 314] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[15]}, 88) = 15 [pid 314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 314] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 315 attached [pid 315] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 315] memfd_create("syzkaller", 0) = 3 [pid 315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 315] munmap(0x7f7673215000, 138412032) = 0 [pid 315] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 315] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 315] ioctl(4, LOOP_CLR_FD) = 0 [pid 315] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 315] close(4) = 0 [pid 315] close(3) = 0 [pid 315] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 314] <... futex resumed>) = 0 [pid 315] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 314] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... futex resumed>) = 0 [pid 315] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 315] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] <... futex resumed>) = 0 [pid 314] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... futex resumed>) = 1 [pid 315] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 315] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] <... futex resumed>) = 0 [pid 314] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... futex resumed>) = 1 [pid 315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 314] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 314] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 314] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 317 attached => {parent_tid=[16]}, 88) = 16 [pid 317] set_robust_list(0x7f767b6149a0, 24 [pid 314] rt_sigprocmask(SIG_SETMASK, [], [pid 317] <... set_robust_list resumed>) = 0 [pid 314] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 314] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 317] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 315] <... write resumed>) = 8523776 [pid 315] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 317] <... mmap resumed>) = 0x20000000 [pid 317] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] <... futex resumed>) = 0 [pid 314] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 314] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... futex resumed>) = 0 [pid 315] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 315] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 314] <... futex resumed>) = ? [pid 317] <... futex resumed>) = ? [pid 317] +++ killed by SIGSYS (core dumped) +++ [pid 315] +++ killed by SIGSYS (core dumped) +++ [pid 314] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=14, si_uid=0, si_status=SIGSYS, si_utime=14, si_stime=35} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 17 ./strace-static-x86_64: Process 318 attached [pid 318] set_robust_list(0x5555568516a0, 24) = 0 [pid 318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 318] setpgid(0, 0) = 0 [pid 318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 318] write(3, "1000", 4) = 4 [pid 318] close(3) = 0 [pid 318] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 318] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[18]}, 88) = 18 ./strace-static-x86_64: Process 319 attached [pid 318] rt_sigprocmask(SIG_SETMASK, [], [pid 319] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 319] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 318] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 319] <... futex resumed>) = 0 [pid 319] memfd_create("syzkaller", 0 [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 319] <... memfd_create resumed>) = 3 [pid 319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 319] munmap(0x7f7673215000, 138412032) = 0 [pid 319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 319] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 319] ioctl(4, LOOP_CLR_FD) = 0 [pid 319] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 319] close(4) = 0 [pid 319] close(3) = 0 [pid 319] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 1 [pid 319] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 319] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 1 [pid 319] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 319] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 1 [pid 319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 318] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 318] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 318] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[19]}, 88) = 19 [pid 318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 318] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 321 attached [pid 321] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 321] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 319] <... write resumed>) = 8704000 [pid 321] <... mmap resumed>) = 0x20000000 [pid 319] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 319] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 321] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 318] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 318] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] <... futex resumed>) = 0 [pid 319] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 319] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 318] <... futex resumed>) = ? [pid 321] <... futex resumed>) = ? [pid 321] +++ killed by SIGSYS (core dumped) +++ [pid 319] +++ killed by SIGSYS (core dumped) +++ [pid 318] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=17, si_uid=0, si_status=SIGSYS, si_utime=15, si_stime=37} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 20 ./strace-static-x86_64: Process 322 attached [pid 322] set_robust_list(0x5555568516a0, 24) = 0 [pid 322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 322] setpgid(0, 0) = 0 [pid 322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 322] write(3, "1000", 4) = 4 [pid 322] close(3) = 0 [pid 322] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 322] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[21]}, 88) = 21 [pid 322] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 322] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 323 attached [pid 323] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 323] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 323] memfd_create("syzkaller", 0) = 3 [pid 323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 323] munmap(0x7f7673215000, 138412032) = 0 [pid 323] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 323] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 323] ioctl(4, LOOP_CLR_FD) = 0 [pid 323] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 323] close(4) = 0 [pid 323] close(3) = 0 [pid 323] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] <... futex resumed>) = 0 [pid 322] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 323] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 322] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... openat resumed>) = 3 [pid 323] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 323] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 322] <... futex resumed>) = 0 [pid 322] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... futex resumed>) = 0 [pid 323] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 323] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 322] <... futex resumed>) = 0 [pid 322] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... futex resumed>) = 1 [pid 323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 322] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 322] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 322] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 322] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[22]}, 88) = 22 [pid 322] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 322] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 322] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 324 attached [pid 324] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 324] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 323] <... write resumed>) = 9281536 [pid 323] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 323] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 324] <... mmap resumed>) = 0x20000000 [pid 324] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 324] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 322] <... futex resumed>) = 0 [pid 322] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 322] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 323] <... futex resumed>) = 0 [pid 323] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 323] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 322] <... futex resumed>) = ? [pid 324] <... futex resumed>) = ? [pid 324] +++ killed by SIGSYS (core dumped) +++ [pid 323] +++ killed by SIGSYS (core dumped) +++ [pid 322] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=20, si_uid=0, si_status=SIGSYS, si_utime=15, si_stime=36} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 23 ./strace-static-x86_64: Process 325 attached [pid 325] set_robust_list(0x5555568516a0, 24) = 0 [pid 325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 325] setpgid(0, 0) = 0 [pid 325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 325] write(3, "1000", 4) = 4 [pid 325] close(3) = 0 [pid 325] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 325] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 325] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 325] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0}./strace-static-x86_64: Process 326 attached => {parent_tid=[24]}, 88) = 24 [pid 326] set_robust_list(0x7f767b6359a0, 24 [pid 325] rt_sigprocmask(SIG_SETMASK, [], [pid 326] <... set_robust_list resumed>) = 0 [pid 325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 326] rt_sigprocmask(SIG_SETMASK, [], [pid 325] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 325] <... futex resumed>) = 0 [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 326] memfd_create("syzkaller", 0) = 3 [pid 326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 326] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 326] munmap(0x7f7673215000, 138412032) = 0 [pid 326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 326] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 326] ioctl(4, LOOP_CLR_FD) = 0 [pid 326] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 326] close(4) = 0 [pid 326] close(3) = 0 [pid 326] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] <... futex resumed>) = 0 [pid 325] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 1 [pid 326] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 326] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 326] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 325] <... futex resumed>) = 0 [pid 325] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 0 [pid 326] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 326] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] <... futex resumed>) = 0 [pid 325] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 1 [pid 326] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 325] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 325] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 325] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 328 attached [pid 328] set_robust_list(0x7f767b6149a0, 24 [pid 325] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25 [pid 325] rt_sigprocmask(SIG_SETMASK, [], [pid 328] <... set_robust_list resumed>) = 0 [pid 325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 328] rt_sigprocmask(SIG_SETMASK, [], [pid 325] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 325] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 328] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 326] <... write resumed>) = 8536064 [pid 326] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 326] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 328] <... mmap resumed>) = 0x20000000 [pid 328] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 325] <... futex resumed>) = 0 [pid 328] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 325] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 325] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] <... futex resumed>) = 0 [pid 326] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 326] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 328] <... futex resumed>) = ? [pid 325] <... futex resumed>) = ? [pid 328] +++ killed by SIGSYS (core dumped) +++ [pid 326] +++ killed by SIGSYS (core dumped) +++ [pid 325] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=23, si_uid=0, si_status=SIGSYS, si_utime=16, si_stime=31} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 26 ./strace-static-x86_64: Process 329 attached [pid 329] set_robust_list(0x5555568516a0, 24) = 0 [pid 329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 329] setpgid(0, 0) = 0 [pid 329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 329] write(3, "1000", 4) = 4 [pid 329] close(3) = 0 [pid 329] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 329] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 329] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 329] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[27]}, 88) = 27 [pid 329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 329] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 330 attached [pid 330] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 330] memfd_create("syzkaller", 0) = 3 [pid 330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 330] munmap(0x7f7673215000, 138412032) = 0 [pid 330] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 330] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 330] ioctl(4, LOOP_CLR_FD) = 0 [pid 330] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 330] close(4) = 0 [pid 330] close(3) = 0 [pid 330] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 330] <... futex resumed>) = 1 [pid 330] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 330] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 330] <... futex resumed>) = 1 [pid 330] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 330] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 330] <... futex resumed>) = 1 [pid 330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 329] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 329] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 329] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 329] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[28]}, 88) = 28 [pid 329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 329] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 331 attached [pid 331] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 331] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 330] <... write resumed>) = 9379840 [pid 330] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 331] <... mmap resumed>) = 0x20000000 [pid 331] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 331] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 329] <... futex resumed>) = 0 [pid 329] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 329] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 330] <... futex resumed>) = 0 [pid 330] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 330] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 329] <... futex resumed>) = ? [pid 331] <... futex resumed>) = ? [pid 331] +++ killed by SIGSYS (core dumped) +++ [pid 330] +++ killed by SIGSYS (core dumped) +++ [pid 329] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=26, si_uid=0, si_status=SIGSYS, si_utime=17, si_stime=35} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 29 ./strace-static-x86_64: Process 332 attached [pid 332] set_robust_list(0x5555568516a0, 24) = 0 [pid 332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 332] setpgid(0, 0) = 0 [pid 332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 332] write(3, "1000", 4) = 4 [pid 332] close(3) = 0 [pid 332] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 332] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 332] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 332] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[30]}, 88) = 30 [pid 332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 332] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 333 attached [pid 333] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 333] memfd_create("syzkaller", 0) = 3 [pid 333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 333] munmap(0x7f7673215000, 138412032) = 0 [pid 333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 333] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 333] ioctl(4, LOOP_CLR_FD) = 0 [pid 333] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 333] close(4) = 0 [pid 333] close(3) = 0 [pid 333] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] <... futex resumed>) = 0 [pid 332] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 333] <... futex resumed>) = 1 [pid 333] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 333] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] <... futex resumed>) = 0 [pid 332] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 333] <... futex resumed>) = 1 [pid 333] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 333] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] <... futex resumed>) = 0 [pid 332] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 333] <... futex resumed>) = 1 [pid 333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 332] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 332] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 332] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 332] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 332] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 335 attached => {parent_tid=[31]}, 88) = 31 [pid 332] rt_sigprocmask(SIG_SETMASK, [], [pid 335] set_robust_list(0x7f767b6149a0, 24 [pid 332] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 332] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000 [pid 335] <... set_robust_list resumed>) = 0 [pid 332] <... futex resumed>) = 0 [pid 335] rt_sigprocmask(SIG_SETMASK, [], [pid 332] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 335] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 335] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 333] <... write resumed>) = 9441280 [pid 333] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 333] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 335] <... mmap resumed>) = 0x20000000 [pid 335] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 335] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] <... futex resumed>) = 0 [pid 332] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 332] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 333] <... futex resumed>) = 0 [pid 333] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 333] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 332] <... futex resumed>) = ? [pid 335] <... futex resumed>) = ? [pid 335] +++ killed by SIGSYS (core dumped) +++ [pid 333] +++ killed by SIGSYS (core dumped) +++ [pid 332] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=29, si_uid=0, si_status=SIGSYS, si_utime=15, si_stime=36} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 336 attached [pid 336] set_robust_list(0x5555568516a0, 24) = 0 [pid 293] <... clone resumed>, child_tidptr=0x555556851690) = 32 [pid 336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 336] setpgid(0, 0) = 0 [pid 336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 336] write(3, "1000", 4) = 4 [pid 336] close(3) = 0 [pid 336] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 336] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 336] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 336] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 336] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 336] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0}./strace-static-x86_64: Process 337 attached => {parent_tid=[33]}, 88) = 33 [pid 336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 336] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 336] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 337] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 337] memfd_create("syzkaller", 0) = 3 [pid 337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 337] munmap(0x7f7673215000, 138412032) = 0 [pid 337] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 337] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 337] ioctl(4, LOOP_CLR_FD) = 0 [pid 337] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 337] close(4) = 0 [pid 337] close(3) = 0 [pid 337] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 336] <... futex resumed>) = 0 [pid 336] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 336] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 337] <... futex resumed>) = 1 [pid 337] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 337] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 336] <... futex resumed>) = 0 [pid 336] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE [pid 336] <... futex resumed>) = 0 [pid 337] <... ioctl resumed>, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 336] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 337] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 336] <... futex resumed>) = 0 [pid 337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 336] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 336] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 336] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 336] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 336] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 336] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 338 attached => {parent_tid=[34]}, 88) = 34 [pid 338] set_robust_list(0x7f767b6149a0, 24 [pid 336] rt_sigprocmask(SIG_SETMASK, [], [pid 338] <... set_robust_list resumed>) = 0 [pid 336] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 336] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] rt_sigprocmask(SIG_SETMASK, [], [pid 336] <... futex resumed>) = 0 [pid 338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 336] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 338] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 337] <... write resumed>) = 9498624 [pid 337] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 337] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] <... mmap resumed>) = 0x20000000 [pid 338] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 338] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 336] <... futex resumed>) = 0 [pid 336] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 336] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 337] <... futex resumed>) = 0 [pid 337] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 337] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 338] <... futex resumed>) = ? [pid 336] <... futex resumed>) = ? [pid 338] +++ killed by SIGSYS (core dumped) +++ [pid 337] +++ killed by SIGSYS (core dumped) +++ [pid 336] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=32, si_uid=0, si_status=SIGSYS, si_utime=13, si_stime=37} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 35 ./strace-static-x86_64: Process 340 attached [pid 340] set_robust_list(0x5555568516a0, 24) = 0 [pid 340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 340] setpgid(0, 0) = 0 [pid 340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 340] write(3, "1000", 4) = 4 [pid 340] close(3) = 0 [pid 340] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 340] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[36]}, 88) = 36 [pid 340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 340] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 341 attached [pid 341] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 341] memfd_create("syzkaller", 0) = 3 [pid 341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 341] munmap(0x7f7673215000, 138412032) = 0 [pid 341] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 341] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 341] ioctl(4, LOOP_CLR_FD) = 0 [pid 341] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 341] close(4) = 0 [pid 341] close(3) = 0 [pid 341] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 1 [pid 341] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 341] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 340] <... futex resumed>) = 0 [pid 341] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE [pid 340] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] <... ioctl resumed>, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 340] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000 [pid 341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 340] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 340] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 342 attached => {parent_tid=[37]}, 88) = 37 [pid 342] set_robust_list(0x7f767b6149a0, 24 [pid 340] rt_sigprocmask(SIG_SETMASK, [], [pid 342] <... set_robust_list resumed>) = 0 [pid 340] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 342] rt_sigprocmask(SIG_SETMASK, [], [pid 340] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000 [pid 342] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 340] <... futex resumed>) = 0 [pid 342] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 340] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... write resumed>) = 8564736 [pid 341] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 341] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 342] <... mmap resumed>) = 0x20000000 [pid 342] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 342] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 340] <... futex resumed>) = 0 [pid 340] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 340] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 341] <... futex resumed>) = 0 [pid 341] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 341] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 340] <... futex resumed>) = ? [pid 342] <... futex resumed>) = ? [pid 342] +++ killed by SIGSYS (core dumped) +++ [pid 341] +++ killed by SIGSYS (core dumped) +++ [pid 340] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=35, si_uid=0, si_status=SIGSYS, si_utime=10, si_stime=36} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 38 ./strace-static-x86_64: Process 343 attached [pid 343] set_robust_list(0x5555568516a0, 24) = 0 [pid 343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 343] setpgid(0, 0) = 0 [pid 343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 343] write(3, "1000", 4) = 4 [pid 343] close(3) = 0 [pid 343] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 343] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 343] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 343] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0}./strace-static-x86_64: Process 344 attached [pid 344] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 344] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 343] <... clone3 resumed> => {parent_tid=[39]}, 88) = 39 [pid 343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 343] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 344] <... futex resumed>) = 0 [pid 344] memfd_create("syzkaller", 0) = 3 [pid 344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 343] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 344] munmap(0x7f7673215000, 138412032) = 0 [pid 344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 344] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 344] ioctl(4, LOOP_CLR_FD) = 0 [pid 344] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 344] close(4) = 0 [pid 344] close(3) = 0 [pid 344] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 344] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 343] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... futex resumed>) = 0 [pid 344] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 344] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... futex resumed>) = 1 [pid 344] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 344] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... futex resumed>) = 1 [pid 344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 343] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 343] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 343] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 343] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 343] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 343] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0}./strace-static-x86_64: Process 346 attached => {parent_tid=[40]}, 88) = 40 [pid 343] rt_sigprocmask(SIG_SETMASK, [], [pid 346] set_robust_list(0x7f767b6149a0, 24 [pid 343] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 346] <... set_robust_list resumed>) = 0 [pid 343] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] rt_sigprocmask(SIG_SETMASK, [], [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 346] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 346] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 344] <... write resumed>) = 9367552 [pid 344] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 346] <... mmap resumed>) = 0x20000000 [pid 346] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 346] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 343] <... futex resumed>) = 0 [pid 343] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 343] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] <... futex resumed>) = 0 [pid 344] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 344] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 343] <... futex resumed>) = ? [pid 346] <... futex resumed>) = ? [pid 346] +++ killed by SIGSYS (core dumped) +++ [pid 344] +++ killed by SIGSYS (core dumped) +++ [pid 343] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=38, si_uid=0, si_status=SIGSYS, si_utime=12, si_stime=38} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 41 ./strace-static-x86_64: Process 347 attached [pid 347] set_robust_list(0x5555568516a0, 24) = 0 [pid 347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 347] setpgid(0, 0) = 0 [pid 347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 347] write(3, "1000", 4) = 4 [pid 347] close(3) = 0 [pid 347] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 347] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 347] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 347] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 347] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[42]}, 88) = 42 [pid 347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 347] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 348 attached [pid 348] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 348] memfd_create("syzkaller", 0) = 3 [pid 348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 348] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 348] munmap(0x7f7673215000, 138412032) = 0 [pid 348] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 348] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 348] ioctl(4, LOOP_CLR_FD) = 0 [pid 348] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 348] close(4) = 0 [pid 348] close(3) = 0 [pid 348] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... futex resumed>) = 0 [pid 347] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 1 [pid 348] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 348] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... futex resumed>) = 0 [pid 347] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 1 [pid 348] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 348] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... futex resumed>) = 0 [pid 347] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 1 [pid 348] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 347] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 347] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 347] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 347] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 347] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[43]}, 88) = 43 ./strace-static-x86_64: Process 349 attached [pid 349] set_robust_list(0x7f767b6149a0, 24 [pid 347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 347] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 347] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 349] <... set_robust_list resumed>) = 0 [pid 349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 349] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 348] <... write resumed>) = 8450048 [pid 348] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 349] <... mmap resumed>) = 0x20000000 [pid 349] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 347] <... futex resumed>) = 0 [pid 347] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 347] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... futex resumed>) = 0 [pid 348] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000 [pid 349] <... futex resumed>) = 1 [pid 348] <... prctl resumed>) = 0 [pid 348] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 347] <... futex resumed>) = ? [pid 349] +++ killed by SIGSYS (core dumped) +++ [pid 348] +++ killed by SIGSYS (core dumped) +++ [pid 347] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=41, si_uid=0, si_status=SIGSYS, si_utime=14, si_stime=36} --- [pid 293] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 350 attached , child_tidptr=0x555556851690) = 44 [pid 350] set_robust_list(0x5555568516a0, 24) = 0 [pid 350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 350] setpgid(0, 0) = 0 [pid 350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 350] write(3, "1000", 4) = 4 [pid 350] close(3) = 0 [pid 350] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 350] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0}./strace-static-x86_64: Process 351 attached [pid 351] set_robust_list(0x7f767b6359a0, 24 [pid 350] <... clone3 resumed> => {parent_tid=[45]}, 88) = 45 [pid 351] <... set_robust_list resumed>) = 0 [pid 351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 351] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 350] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 351] <... futex resumed>) = 0 [pid 350] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 351] memfd_create("syzkaller", 0) = 3 [pid 351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 351] munmap(0x7f7673215000, 138412032) = 0 [pid 351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 351] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 351] ioctl(4, LOOP_CLR_FD) = 0 [pid 351] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 351] close(4) = 0 [pid 351] close(3) = 0 [pid 351] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 350] <... futex resumed>) = 0 [pid 351] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 350] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... openat resumed>) = 3 [pid 351] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 351] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] <... futex resumed>) = 0 [pid 350] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 350] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... futex resumed>) = 0 [pid 351] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 351] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... futex resumed>) = 0 [pid 350] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 351] <... futex resumed>) = 1 [pid 351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 350] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 350] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 350] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 350] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[46]}, 88) = 46 [pid 350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 350] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 350] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 353 attached [pid 353] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 353] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 351] <... write resumed>) = 9846784 [pid 351] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 351] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] <... mmap resumed>) = 0x20000000 [pid 353] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... futex resumed>) = 0 [pid 350] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 350] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 353] <... futex resumed>) = 1 [pid 353] futex(0x7f767b711618, FUTEX_WAIT_PRIVATE, 0, NULL [pid 351] <... futex resumed>) = 0 [pid 351] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 351] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 350] <... futex resumed>) = ? [pid 353] <... futex resumed>) = ? [pid 353] +++ killed by SIGSYS (core dumped) +++ [pid 351] +++ killed by SIGSYS (core dumped) +++ [pid 350] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=44, si_uid=0, si_status=SIGSYS, si_utime=13, si_stime=34} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 47 ./strace-static-x86_64: Process 354 attached [pid 354] set_robust_list(0x5555568516a0, 24) = 0 [pid 354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 354] setpgid(0, 0) = 0 [pid 354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 354] write(3, "1000", 4) = 4 [pid 354] close(3) = 0 [pid 354] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 354] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 354] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 354] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0} => {parent_tid=[48]}, 88) = 48 [pid 354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 354] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000}./strace-static-x86_64: Process 355 attached [pid 355] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 355] memfd_create("syzkaller", 0) = 3 [pid 355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 355] munmap(0x7f7673215000, 138412032) = 0 [pid 355] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 355] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 355] ioctl(4, LOOP_CLR_FD) = 0 [pid 355] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 355] close(4) = 0 [pid 355] close(3) = 0 [pid 355] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] <... futex resumed>) = 0 [pid 354] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 1 [pid 355] openat(AT_FDCWD, "memory.events.local", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [pid 355] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] <... futex resumed>) = 0 [pid 354] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 1 [pid 355] ioctl(3, F2FS_IOC_START_ATOMIC_WRITE, 0) = -1 ENOTTY (Inappropriate ioctl for device) [pid 355] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] <... futex resumed>) = 0 [pid 354] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 1 [pid 355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 34136651 [pid 354] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 354] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b5f4000 [pid 354] mprotect(0x7f767b5f5000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 354] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b614990, parent_tid=0x7f767b614990, exit_signal=0, stack=0x7f767b5f4000, stack_size=0x20300, tls=0x7f767b6146c0} => {parent_tid=[49]}, 88) = 49 [pid 354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 354] futex(0x7f767b711618, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 354] futex(0x7f767b71161c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 356 attached [pid 356] set_robust_list(0x7f767b6149a0, 24) = 0 [pid 356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 356] mmap(0x20000000, 11755520, PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE|MAP_STACK, 3, 0 [pid 355] <... write resumed>) = 8482816 [pid 355] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 356] <... mmap resumed>) = 0x20000000 [pid 356] futex(0x7f767b71161c, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] <... futex resumed>) = 0 [pid 354] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 354] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... futex resumed>) = 0 [pid 355] prctl(PR_SET_SYSCALL_USER_DISPATCH, PR_SYS_DISPATCH_ON, 0x1, 0x6, 0x20000000) = 0 [pid 355] --- SIGSYS {si_signo=SIGSYS, si_code=SYS_USER_DISPATCH, si_call_addr=0x7f767b680459, si_syscall=__NR_futex, si_arch=AUDIT_ARCH_X86_64} --- [pid 354] <... futex resumed>) = ? [pid 356] <... futex resumed>) = ? [pid 356] +++ killed by SIGSYS (core dumped) +++ [pid 355] +++ killed by SIGSYS (core dumped) +++ [pid 354] +++ killed by SIGSYS (core dumped) +++ [pid 293] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=47, si_uid=0, si_status=SIGSYS, si_utime=15, si_stime=36} --- [pid 293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 293] ioctl(3, LOOP_CLR_FD) = 0 [pid 293] close(3) = 0 [pid 293] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556851690) = 50 ./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x5555568516a0, 24) = 0 [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] setpgid(0, 0) = 0 [pid 357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 357] write(3, "1000", 4) = 4 [pid 357] close(3) = 0 [pid 357] futex(0x7f767b71160c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] rt_sigaction(SIGRT_1, {sa_handler=0x7f767b6a6060, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f767b697ea0}, NULL, 8) = 0 [pid 357] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f767b615000 [pid 357] mprotect(0x7f767b616000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 357] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 357] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f767b635990, parent_tid=0x7f767b635990, exit_signal=0, stack=0x7f767b615000, stack_size=0x20300, tls=0x7f767b6356c0}./strace-static-x86_64: Process 358 attached [pid 358] set_robust_list(0x7f767b6359a0, 24) = 0 [pid 358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 358] futex(0x7f767b711608, FUTEX_WAIT_PRIVATE, 0, NULL [pid 357] <... clone3 resumed> => {parent_tid=[51]}, 88) = 51 [pid 357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 357] futex(0x7f767b711608, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 357] futex(0x7f767b71160c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 358] <... futex resumed>) = 0 [pid 358] memfd_create("syzkaller", 0) = 3 [pid 358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7673215000 [pid 358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 67108864) = 67108864 [pid 358] munmap(0x7f7673215000, 138412032) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 358] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 358] ioctl(4, LOOP_CLR_FD) = 0 [pid 358] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 358] close(4) = 0