./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2282490090 <...> syzkaller syzkaller login: [ 15.604775][ T36] kauditd_printk_skb: 31 callbacks suppressed [ 15.604793][ T36] audit: type=1400 audit(1750579572.060:59): avc: denied { transition } for pid=232 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.609294][ T36] audit: type=1400 audit(1750579572.060:60): avc: denied { noatsecure } for pid=232 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.612308][ T36] audit: type=1400 audit(1750579572.060:61): avc: denied { write } for pid=232 comm="sh" path="pipe:[3008]" dev="pipefs" ino=3008 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 15.615530][ T36] audit: type=1400 audit(1750579572.060:62): avc: denied { rlimitinh } for pid=232 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 15.618276][ T36] audit: type=1400 audit(1750579572.060:63): avc: denied { siginh } for pid=232 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.180' (ED25519) to the list of known hosts. execve("./syz-executor2282490090", ["./syz-executor2282490090"], 0x7fff82db46e0 /* 10 vars */) = 0 brk(NULL) = 0x55557e68a000 brk(0x55557e68ad40) = 0x55557e68ad40 arch_prctl(ARCH_SET_FS, 0x55557e68a3c0) = 0 set_tid_address(0x55557e68a690) = 297 set_robust_list(0x55557e68a6a0, 24) = 0 rseq(0x55557e68ace0, 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-executor2282490090", 4096) = 28 getrandom("\xeb\xe2\x4c\x10\xbd\x00\xdf\x08", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557e68ad40 brk(0x55557e6abd40) = 0x55557e6abd40 brk(0x55557e6ac000) = 0x55557e6ac000 mprotect(0x7fef3b3c1000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 298 attached , child_tidptr=0x55557e68a690) = 298 [pid 298] set_robust_list(0x55557e68a6a0, 24) = 0 [pid 298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 298] setpgid(0, 0) = 0 [pid 298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 298] write(3, "1000", 4) = 4 [pid 298] close(3) = 0 [pid 298] write(1, "executing program\n", 18executing program ) = 18 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] rt_sigaction(SIGRT_1, {sa_handler=0x7fef3b363720, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fef3b354da0}, NULL, 8) = 0 [pid 298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fef3b2ca000 [pid 298] mprotect(0x7fef3b2cb000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fef3b2ea990, parent_tid=0x7fef3b2ea990, exit_signal=0, stack=0x7fef3b2ca000, stack_size=0x20300, tls=0x7fef3b2ea6c0}./strace-static-x86_64: Process 299 attached [pid 299] set_robust_list(0x7fef3b2ea9a0, 24) = 0 [pid 299] rt_sigprocmask(SIG_SETMASK, [], [pid 298] <... clone3 resumed> => {parent_tid=[299]}, 88) = 299 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 299] mknodat(AT_FDCWD, "./file0", 000 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... mknodat resumed>) = 0 [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 299] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 299] setsockopt(-1, SOL_XDP, XDP_TX_RING, [2048], 4 [pid 298] <... futex resumed>) = 0 [pid 299] <... setsockopt resumed>) = -1 EBADF (Bad file descriptor) [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 298] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 299] <... futex resumed>) = 0 [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] pipe2( [pid 298] <... futex resumed>) = 0 [pid 299] <... pipe2 resumed>[3, 4], 0) = 0 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 299] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] <... futex resumed>) = 0 [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = 0 [pid 298] <... futex resumed>) = 1 [pid 299] write(4, "\x15\x00\x00\x00\x65\xff\xff\x01\x7f\x00\x0e\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... write resumed>) = 21 [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 299] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 298] <... futex resumed>) = 0 [pid 299] dup(4 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... dup resumed>) = 5 [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 299] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 299] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 299] write(5, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] <... write resumed>) = 24 [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 299] write(5, "\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 176) = 176 [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 298] <... futex resumed>) = 0 [pid 299] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 299] <... futex resumed>) = 0 [pid 298] <... futex resumed>) = 1 [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [ 39.956617][ T36] audit: type=1400 audit(1750579596.410:64): avc: denied { execmem } for pid=297 comm="syz-executor228" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 299] mount(NULL, "./file0", "9p", 0, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000005,dfltuid=0x0000000000000000," [pid 298] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 298] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 298] futex(0x7fef3b3c73fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fef3b2a9000 [pid 298] mprotect(0x7fef3b2aa000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fef3b2c9990, parent_tid=0x7fef3b2c9990, exit_signal=0, stack=0x7fef3b2a9000, stack_size=0x20300, tls=0x7fef3b2c96c0}./strace-static-x86_64: Process 301 attached => {parent_tid=[301]}, 88) = 301 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] futex(0x7fef3b3c73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 298] futex(0x7fef3b3c73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 301] set_robust_list(0x7fef3b2c99a0, 24) = 0 [pid 301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 301] sync( [pid 299] <... mount resumed>) = -1 EIO (Input/output error) [pid 299] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 39.989720][ T36] audit: type=1400 audit(1750579596.440:65): avc: denied { mounton } for pid=298 comm="syz-executor228" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=file permissive=1 [pid 299] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 298] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 298] futex(0x7fef3b3c73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 298] exit_group(0 [pid 299] <... futex resumed>) = ? [pid 298] <... exit_group resumed>) = ? [pid 299] +++ exited with 0 +++ [pid 301] <... sync resumed>) = ? [pid 301] +++ exited with 0 +++ [pid 298] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=298, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 302 attached , child_tidptr=0x55557e68a690) = 302 [pid 302] set_robust_list(0x55557e68a6a0, 24) = 0 [pid 302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 302] setpgid(0, 0) = 0 [pid 302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 302] write(3, "1000", 4) = 4 [pid 302] close(3) = 0 executing program [pid 302] write(1, "executing program\n", 18) = 18 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] rt_sigaction(SIGRT_1, {sa_handler=0x7fef3b363720, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fef3b354da0}, NULL, 8) = 0 [pid 302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fef3b2ca000 [pid 302] mprotect(0x7fef3b2cb000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fef3b2ea990, parent_tid=0x7fef3b2ea990, exit_signal=0, stack=0x7fef3b2ca000, stack_size=0x20300, tls=0x7fef3b2ea6c0}./strace-static-x86_64: Process 303 attached [pid 303] set_robust_list(0x7fef3b2ea9a0, 24) = 0 [pid 303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 302] <... clone3 resumed> => {parent_tid=[303]}, 88) = 303 [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 303] <... futex resumed>) = 0 [pid 303] mknodat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists) [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 0 [pid 302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... futex resumed>) = 0 [pid 303] setsockopt(-1, SOL_XDP, XDP_TX_RING, [2048], 4 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... setsockopt resumed>) = -1 EBADF (Bad file descriptor) [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 302] <... futex resumed>) = 0 [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] pipe2([3, 4], 0) = 0 [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] <... futex resumed>) = 0 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... futex resumed>) = 0 [pid 302] <... futex resumed>) = 1 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] write(4, "\x15\x00\x00\x00\x65\xff\xff\x01\x7f\x00\x0e\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21 [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 302] <... futex resumed>) = 0 [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] dup(4) = 5 [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 302] <... futex resumed>) = 0 [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] <... futex resumed>) = 0 [pid 303] write(5, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 303] write(5, "\x00\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 176 [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... write resumed>) = 176 [pid 302] <... futex resumed>) = 0 [pid 303] futex(0x7fef3b3c73ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] <... futex resumed>) = 0 [pid 303] futex(0x7fef3b3c73e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 302] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] futex(0x7fef3b3c73e8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 303] <... futex resumed>) = 0 [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] mount(NULL, "./file0", "9p", 0, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000005,dfltuid=0x0000000000000000," [pid 302] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 302] futex(0x7fef3b3c73ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 302] futex(0x7fef3b3c73fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fef3b2a9000 [pid 302] mprotect(0x7fef3b2aa000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fef3b2c9990, parent_tid=0x7fef3b2c9990, exit_signal=0, stack=0x7fef3b2a9000, stack_size=0x20300, tls=0x7fef3b2c96c0}./strace-static-x86_64: Process 304 attached [pid 304] set_robust_list(0x7fef3b2c99a0, 24 [pid 302] <... clone3 resumed> => {parent_tid=[304]}, 88) = 304 [pid 304] <... set_robust_list resumed>) = 0 [pid 302] rt_sigprocmask(SIG_SETMASK, [], [pid 304] rt_sigprocmask(SIG_SETMASK, [], [pid 302] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 304] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] futex(0x7fef3b3c73f8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 302] futex(0x7fef3b3c73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] sync( [pid 302] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 302] futex(0x7fef3b3c73fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out) [pid 302] exit_group(0) = ? [pid 297] kill(-302, SIGKILL) = 0 [pid 297] kill(302, SIGKILL) = 0 [pid 297] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 297] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 297] getdents64(3, 0x55557e68b730 /* 2 entries */, 32768) = 48 [pid 297] getdents64(3, 0x55557e68b730 /* 0 entries */, 32768) = 0 [pid 297] close(3) = 0 [ 58.679871][ T31] sched: DL replenish lagged too much [ 244.679840][ T37] INFO: task syz-executor228:304 blocked for more than 122 seconds. [ 244.687924][ T37] Not tainted 6.12.23-syzkaller-gd9fd901baa98 #0 [ 244.694880][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 244.703649][ T37] task:syz-executor228 state:D stack:0 pid:304 tgid:302 ppid:297 flags:0x00004004 [ 244.713919][ T37] Call Trace: [ 244.717220][ T37] [ 244.720224][ T37] __schedule+0x145b/0x1f10 [ 244.724857][ T37] ? __sched_text_start+0x10/0x10 [ 244.729931][ T37] ? _raw_spin_lock_irqsave+0xaf/0x150 [ 244.735419][ T37] ? mutex_unlock+0x8b/0x240 [ 244.740066][ T37] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 244.745908][ T37] schedule+0xc6/0x240 [ 244.750036][ T37] super_lock+0x150/0x300 [ 244.754387][ T37] ? user_get_super+0x350/0x350 [ 244.759246][ T37] ? __cfi_var_wake_function+0x10/0x10 [ 244.764757][ T37] ? __kasan_check_write+0x18/0x20 [ 244.769932][ T37] iterate_supers+0x8a/0x560 [ 244.774542][ T37] ? __cfi_sync_inodes_one_sb+0x10/0x10 [ 244.780169][ T37] ksys_sync+0x95/0x160 [ 244.784356][ T37] ? __cfi_ksys_sync+0x10/0x10 [ 244.789775][ T37] __ia32_sys_sync+0x12/0x20 [ 244.794422][ T37] x64_sys_call+0x2a58/0x2ee0 [ 244.799113][ T37] do_syscall_64+0x58/0xf0 [ 244.803654][ T37] ? clear_bhb_loop+0x35/0x90 [ 244.808480][ T37] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 244.814603][ T37] RIP: 0033:0x7fef3b33d7e9 [ 244.819521][ T37] RSP: 002b:00007fef3b2c9218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 [ 244.829087][ T37] RAX: ffffffffffffffda RBX: 00007fef3b3c73f8 RCX: 00007fef3b33d7e9 [ 244.839780][ T37] RDX: 00007fef3b319e86 RSI: 0000000000000000 RDI: 00007fef3b2c9fb0 [ 244.849229][ T37] RBP: 00007fef3b3c73f0 R08: 00007ffdfc69e627 R09: 0000000000000000 [ 244.858131][ T37] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fef3b39407c [ 244.866287][ T37] R13: 000000000000006e R14: 0030656c69662f2e R15: 00002000000002c0 [ 244.874327][ T37] [ 244.877392][ T37] NMI backtrace for cpu 1 [ 244.877407][ T37] CPU: 1 UID: 0 PID: 37 Comm: khungtaskd Not tainted 6.12.23-syzkaller-gd9fd901baa98 #0 f1acc3ef52b3e732a05c4f7a2560722db90bb473 [ 244.877430][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 244.877439][ T37] Call Trace: [ 244.877444][ T37] [ 244.877451][ T37] __dump_stack+0x21/0x30 [ 244.877473][ T37] dump_stack_lvl+0x10c/0x190 [ 244.877490][ T37] ? __cfi_dump_stack_lvl+0x10/0x10 [ 244.877510][ T37] dump_stack+0x19/0x20 [ 244.877526][ T37] nmi_cpu_backtrace+0x2bf/0x2d0 [ 244.877545][ T37] ? rcu_read_unlock_special+0xab/0x480 [ 244.877560][ T37] ? __cfi_nmi_cpu_backtrace+0x10/0x10 [ 244.877578][ T37] ? sched_show_task+0x379/0x560 [ 244.877594][ T37] ? __rcu_read_unlock+0xc0/0xc0 [ 244.877617][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10 [ 244.877633][ T37] ? __cfi_nmi_raise_cpu_backtrace+0x10/0x10 [ 244.877648][ T37] nmi_trigger_cpumask_backtrace+0x142/0x2c0 [ 244.877668][ T37] arch_trigger_cpumask_backtrace+0x14/0x20 [ 244.877684][ T37] watchdog+0xd8f/0xed0 [ 244.877701][ T37] ? __cfi_watchdog+0x10/0x10 [ 244.877716][ T37] ? __kasan_check_read+0x15/0x20 [ 244.877733][ T37] ? __kthread_parkme+0x138/0x180 [ 244.877753][ T37] ? schedule+0xc6/0x240 [ 244.877774][ T37] kthread+0x2c7/0x370 [ 244.877795][ T37] ? __cfi_watchdog+0x10/0x10 [ 244.877811][ T37] ? __cfi_kthread+0x10/0x10 [ 244.877832][ T37] ret_from_fork+0x64/0xa0 [ 244.877849][ T37] ? __cfi_kthread+0x10/0x10 [ 244.877870][ T37] ret_from_fork_asm+0x1a/0x30 [ 244.877892][ T37] [ 244.877897][ T37] Sending NMI from CPU 1 to CPUs 0: [ 245.038312][ C0] NMI backtrace for cpu 0 skipped: idling at default_idle+0x17/0x20