ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor130804828 <...> Warning: Permanently added '10.128.0.29' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor130804828", ["ci2-upstream-fs/syz-executor130804828"], 0x7ffc9f6ce360 /* 10 vars */) = 0 brk(NULL) = 0x5555783dc000 brk(0x5555783dcd80) = 0x5555783dcd80 arch_prctl(ARCH_SET_FS, 0x5555783dc400) = 0 set_tid_address(0x5555783dc6d0) = 5647 set_robust_list(0x5555783dc6e0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-upstream-fs/syz-executor130804828", 4096) = 43 getrandom("\x87\x97\x3b\xb7\xa4\xc8\x87\xb2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555783dcd80 brk(0x5555783fdd80) = 0x5555783fdd80 brk(0x5555783fe000) = 0x5555783fe000 mprotect(0x7feaae4c9000, 20480, 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 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5648 attached [pid 5648] set_robust_list(0x5555783dc6e0, 24 [pid 5647] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5648 [pid 5648] <... set_robust_list resumed>) = 0 [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5648] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5648] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "10000000000", 11) = 11 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "20", 2) = 2 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "1", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "0", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "0", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "1", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "100", 3) = 3 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "0", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "0", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "7 4 1 3", 7) = 7 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "1", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "1", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "Y", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "0", 1) = 1 [pid 5647] close(3) = 0 [pid 5647] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5647] write(3, "5648", 4) = 4 [pid 5647] close(3) = 0 [pid 5647] kill(5648, SIGKILL) = 0 [pid 5648] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5648, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5649 attached , child_tidptr=0x5555783dc6d0) = 5649 [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] set_robust_list(0x5555783dc6e0, 24 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] <... set_robust_list resumed>) = 0 [pid 5647] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5649] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5647] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5649] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] rt_sigprocmask(SIG_BLOCK, ~[]ci2-upstream-fs/strace-static-x86_64: Process 5650 attached , [], 8) = 0 [pid 5647] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5650 [pid 5650] set_robust_list(0x5555783dc6e0, 24 [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5650] <... set_robust_list resumed>) = 0 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5650] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5647] <... rt_sigprocmask resumed>, [], 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5651 attached [pid 5647] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5651] set_robust_list(0x5555783dc6e0, 24 [pid 5650] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5649] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5651 ci2-upstream-fs/strace-static-x86_64: Process 5652 attached [pid 5651] <... set_robust_list resumed>) = 0 [pid 5647] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5652 [pid 5652] set_robust_list(0x5555783dc6e0, 24 [pid 5650] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5649] rt_sigprocmask(SIG_SETMASK, [] [pid 5651] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5652] <... set_robust_list resumed>) = 0 [pid 5651] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5649] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5651] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5647] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5653 attached [pid 5647] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5652] rt_sigprocmask(SIG_SETMASK, [] [pid 5651] <... prctl resumed>) = 0 [pid 5653] set_robust_list(0x5555783dc6e0, 24 [pid 5650] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5653 [pid 5653] <... set_robust_list resumed>) = 0 [pid 5652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5651] setpgid(0, 0) = 0 [pid 5650] rt_sigprocmask(SIG_SETMASK, [] [pid 5653] rt_sigprocmask(SIG_SETMASK, [] [pid 5652] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5650] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5653] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5652] <... rt_sigprocmask resumed>, [], 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5654 attached [pid 5653] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5652] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5651] <... openat resumed>) = 3 [pid 5647] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5654 [pid 5654] set_robust_list(0x5555783dc6e0, 24) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5655 attached [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5653] <... prctl resumed>) = 0 [pid 5651] write(3, "1000", 4 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5651] <... write resumed>) = 4 [pid 5655] set_robust_list(0x5555783dc6e0, 24 [pid 5651] close(3 [pid 5647] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5655] <... set_robust_list resumed>) = 0 [pid 5647] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5651] <... close resumed>) = 0 [pid 5655] rt_sigprocmask(SIG_SETMASK, [] [pid 5654] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5653] setpgid(0, 0 [pid 5652] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5655 [pid 5651] write(1, "executing program\n", 18 [pid 5655] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5654] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5653] <... setpgid resumed>) = 0 [pid 5652] rt_sigprocmask(SIG_SETMASK, [] [pid 5653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5651] <... write resumed>) = 18 [pid 5655] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5654] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5653] <... openat resumed>) = 3 executing program [pid 5653] write(3, "1000", 4ci2-upstream-fs/strace-static-x86_64: Process 5656 attached [pid 5655] <... prctl resumed>) = 0 [pid 5654] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5651] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5654] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5656] set_robust_list(0x5555783dc6e0, 24 [pid 5653] <... write resumed>) = 4 [pid 5656] <... set_robust_list resumed>) = 0 [pid 5653] close(3 [pid 5656] rt_sigprocmask(SIG_SETMASK, [] [pid 5653] <... close resumed>) = 0 [pid 5656] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5653] write(1, "executing program\n", 18 [pid 5656] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5653] <... write resumed>) = 18 [pid 5653] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5656] <... rt_sigprocmask resumed>, [], 8) = 0 executing program [pid 5656] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5655] setpgid(0, 0 [pid 5647] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5656 [pid 5655] <... setpgid resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5657 attached ci2-upstream-fs/strace-static-x86_64: Process 5658 attached [pid 5657] set_robust_list(0x5555783dc6e0, 24 [pid 5655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5654] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5657 [pid 5647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5657] <... set_robust_list resumed>) = 0 [pid 5655] <... openat resumed>) = 3 [pid 5654] rt_sigprocmask(SIG_SETMASK, [] [pid 5658] set_robust_list(0x5555783dc6e0, 24 [pid 5657] rt_sigprocmask(SIG_SETMASK, [] [pid 5656] <... clone resumed>, child_tidptr=0x5555783dc6d0) = 5658 [pid 5654] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5657] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5656] rt_sigprocmask(SIG_SETMASK, [] [pid 5655] write(3, "1000", 4 [pid 5658] <... set_robust_list resumed>) = 0 [pid 5657] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5656] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5655] <... write resumed>) = 4 [pid 5658] rt_sigprocmask(SIG_SETMASK, [] [pid 5657] <... prctl resumed>) = 0 [pid 5655] close(3 [pid 5658] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5657] setpgid(0, 0 [pid 5658] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5657] <... setpgid resumed>) = 0 [pid 5655] <... close resumed>) = 0 [pid 5653] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5651] <... mkdirat resumed>) = 0 [pid 5658] <... prctl resumed>) = 0 [pid 5657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5655] write(1, "executing program\n", 18 [pid 5658] setpgid(0, 0 [pid 5657] <... openat resumed>) = 3 executing program [pid 5653] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5651] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5658] <... setpgid resumed>) = 0 [pid 5657] write(3, "1000", 4 [pid 5655] <... write resumed>) = 18 [pid 5658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5657] <... write resumed>) = 4 [pid 5655] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5657] close(3 [pid 5655] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5658] <... openat resumed>) = 3 [pid 5657] <... close resumed>) = 0 [pid 5655] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5658] write(3, "1000", 4 executing program [pid 5657] write(1, "executing program\n", 18 [pid 5658] <... write resumed>) = 4 [pid 5657] <... write resumed>) = 18 [pid 5651] <... mount resumed>) = 0 [pid 5658] close(3 [pid 5657] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5651] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5658] <... close resumed>) = 0 [pid 5658] write(1, "executing program\n", 18 [pid 5657] <... mkdirat resumed>) = -1 EEXIST (File exists) executing program [pid 5658] <... write resumed>) = 18 [pid 5657] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5658] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5655] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5653] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5657] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5651] <... openat resumed>) = 3 [pid 5658] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5653] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5657] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5658] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5657] <... openat resumed>) = 3 [pid 5655] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5653] <... openat resumed>) = 3 [pid 5651] write(3, "- - -", 5 [pid 5658] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5657] write(3, "- - -", 5 [pid 5655] <... openat resumed>) = 3 [pid 5653] write(3, "- - -", 5 [pid 5658] <... openat resumed>) = 3 [pid 5655] write(3, "- - -", 5 [pid 5658] write(3, "- - -", 5 [pid 5649] kill(-5651, SIGKILL) = 0 [pid 5649] kill(5651, SIGKILL) = 0 [pid 5650] kill(-5653, SIGKILL) = 0 [pid 5650] kill(5653, SIGKILL) = 0 [pid 5652] kill(-5655, SIGKILL) = 0 [pid 5652] kill(5655, SIGKILL) = 0 [pid 5656] kill(-5658, SIGKILL) = 0 [pid 5656] kill(5658, SIGKILL [pid 5654] kill(-5657, SIGKILL [pid 5656] <... kill resumed>) = 0 [pid 5654] <... kill resumed>) = 0 [pid 5654] kill(5657, SIGKILL) = 0 [pid 5650] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5650] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5650] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5650] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5650] close(3) = 0 [pid 5649] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5649] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5649] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5649] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5649] close(3) = 0 [pid 5652] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5652] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5652] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5652] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5652] close(3) = 0 [pid 5656] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5656] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5654] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5656] getdents64(3 [pid 5654] <... openat resumed>) = 3 [pid 5656] <... getdents64 resumed>, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5654] fstat(3 [pid 5656] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5654] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5656] close(3 [pid 5654] getdents64(3 [pid 5656] <... close resumed>) = 0 [pid 5654] <... getdents64 resumed>, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5654] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5654] close(3) = 0 [pid 5651] <... write resumed>) = ? [pid 5651] +++ killed by SIGKILL +++ [pid 5649] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5651, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=5 /* 0.05 s */} --- [pid 5649] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5649] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5665 attached , child_tidptr=0x5555783dc6d0) = 5665 [pid 5665] set_robust_list(0x5555783dc6e0, 24) = 0 [pid 5665] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] rt_sigprocmask(SIG_SETMASK, [] [pid 5665] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5665] setpgid(0, 0) = 0 [pid 5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5665] write(3, "1000", 4) = 4 [pid 5665] close(3) = 0 executing program [pid 5665] write(1, "executing program\n", 18) = 18 [pid 5665] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5665] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5665] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5665] write(3, "- - -", 5 [pid 5649] kill(-5665, SIGKILL) = 0 [pid 5649] kill(5665, SIGKILL) = 0 [pid 5649] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5649] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5649] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5649] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5649] close(3) = 0 [pid 5657] <... write resumed>) = ? [pid 5657] +++ killed by SIGKILL +++ [pid 5654] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5657, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5654] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5654] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555783dc6d0) = 5666 ci2-upstream-fs/strace-static-x86_64: Process 5666 attached [pid 5654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5666] set_robust_list(0x5555783dc6e0, 24) = 0 [pid 5666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5666] setpgid(0, 0) = 0 [pid 5666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5666] write(3, "1000", 4) = 4 [pid 5666] close(3) = 0 [pid 5666] write(1, "executing program\n", 18) = 18 [pid 5666] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5666] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5666] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 executing program [pid 5666] write(3, "- - -", 5 [pid 5654] kill(-5666, SIGKILL) = 0 [pid 5654] kill(5666, SIGKILL) = 0 [pid 5654] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5654] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5654] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5654] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5654] close(3) = 0 [pid 5653] <... write resumed>) = ? [pid 5653] +++ killed by SIGKILL +++ [pid 5650] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5653, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5650] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5674 attached , child_tidptr=0x5555783dc6d0) = 5674 [pid 5674] set_robust_list(0x5555783dc6e0, 24 [pid 5650] rt_sigprocmask(SIG_SETMASK, [] [pid 5674] <... set_robust_list resumed>) = 0 [pid 5650] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5674] setpgid(0, 0) = 0 [pid 5674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5674] write(3, "1000", 4) = 4 [pid 5674] close(3) = 0 [pid 5674] write(1, "executing program\n", 18) = 18 executing program [pid 5674] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5674] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5674] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5674] write(3, "- - -", 5 [pid 5650] kill(-5674, SIGKILL) = 0 [pid 5650] kill(5674, SIGKILL) = 0 [pid 5650] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5650] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5650] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5650] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5650] close(3) = 0 [pid 5655] <... write resumed>) = ? [pid 5655] +++ killed by SIGKILL +++ [pid 5652] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5655, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5652] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5675 attached , child_tidptr=0x5555783dc6d0) = 5675 [pid 5675] set_robust_list(0x5555783dc6e0, 24 [pid 5652] rt_sigprocmask(SIG_SETMASK, [] [pid 5675] <... set_robust_list resumed>) = 0 [pid 5652] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5675] setpgid(0, 0) = 0 [pid 5675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5675] write(3, "1000", 4) = 4 [pid 5675] close(3) = 0 executing program [pid 5675] write(1, "executing program\n", 18) = 18 [pid 5675] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5675] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5675] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5675] write(3, "- - -", 5 [pid 5652] kill(-5675, SIGKILL) = 0 [pid 5652] kill(5675, SIGKILL) = 0 [pid 5652] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5652] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5652] getdents64(3, 0x5555783dd790 /* 2 entries */, 32768) = 48 [pid 5652] getdents64(3, 0x5555783dd790 /* 0 entries */, 32768) = 0 [pid 5652] close(3) = 0 [ 463.878430][ T38] INFO: task syz-executor130:5665 blocked f ** replaying previous printk message ** [ 463.878430][ T38] INFO: task syz-executor130:5665 blocked for more than 143 seconds. [ 463.880794][ T38] Not tainted syzkaller #0 [ 463.880810][ T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 463.880819][ T38] task:syz-executor130 state:D stack:27304 pid:5665 tgid:5665 ppid:5649 task_flags:0x400140 flags:0x00080002 [ 463.880887][ T38] Call Trace: [ 463.880894][ T38] [ 463.880908][ T38] __schedule+0x16d9/0x5700 [ 463.881005][ T38] ? __pfx___schedule+0x10/0x10 [ 463.881039][ T38] rt_mutex_schedule+0x76/0xf0 [ 463.881093][ T38] rt_mutex_slowlock_block+0x55e/0x690 [ 463.881133][ T38] rt_mutex_slowlock+0x2d4/0x780 [ 463.881158][ T38] ? rt_mutex_slowlock+0x1f2/0x780 [ 463.881184][ T38] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 463.881223][ T38] ? scsi_scan_host_selected+0x19f/0x6c0 [ 463.881254][ T38] ? scsi_scan_host_selected+0x19f/0x6c0 [ 463.881272][ T38] mutex_lock_nested+0x168/0x1d0 [ 463.881308][ T38] scsi_scan_host_selected+0x19f/0x6c0 [ 463.881330][ T38] ? __lock_acquire+0x6df/0x2e40 [ 463.881359][ T38] store_scan+0x4aa/0x540 [ 463.881383][ T38] ? __pfx_store_scan+0x10/0x10 [ 463.881407][ T38] ? lock_acquire+0x115/0x350 [ 463.881427][ T38] ? sysfs_file_kobj+0x1a/0x230 [ 463.881452][ T38] ? sysfs_break_active_protection+0x50/0xa0 [ 463.881477][ T38] ? sysfs_file_kobj+0x1a/0x230 [ 463.881492][ T38] ? sysfs_file_kobj+0x1a/0x230 [ 463.881509][ T38] ? sysfs_file_kobj+0x1e4/0x230 [ 463.881527][ T38] ? sysfs_kf_write+0x166/0x260 [ 463.881548][ T38] ? __pfx_sysfs_kf_write+0x10/0x10 [ 463.881564][ T38] kernfs_fop_write_iter+0x3a5/0x540 [ 463.881592][ T38] vfs_write+0x61e/0xbb0 [ 463.881620][ T38] ? __pfx_vfs_write+0x10/0x10 [ 463.881643][ T38] ? rt_spin_unlock+0x159/0x200 [ 463.881670][ T38] ? rt_spin_unlock+0x165/0x200 [ 463.881702][ T38] ksys_write+0x156/0x270 [ 463.881724][ T38] ? __pfx_ksys_write+0x10/0x10 [ 463.881754][ T38] do_syscall_64+0x166/0x520 [ 463.881774][ T38] ? trace_irq_disable+0x3b/0x140 [ 463.881794][ T38] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 463.881812][ T38] ? clear_bhb_loop+0x70/0xc0 [ 463.881835][ T38] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 463.881856][ T38] RIP: 0033:0x7feaae4368b9 [ 463.881876][ T38] RSP: 002b:00007ffc214a4b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 463.881895][ T38] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feaae4368b9 [ 463.881907][ T38] RDX: 0000000000000005 RSI: 0000200000001400 RDI: 0000000000000003 [ 463.881919][ T38] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 463.881929][ T38] R10: 0000000000000009 R11: 0000000000000246 R12: 0000000000044327 [ 463.881940][ T38] R13: 00007ffc214a4b9c R14: 00007ffc214a4bb0 R15: 00007ffc214a4ba0 [ 463.881970][ T38] [ 463.881986][ T38] [ 463.881986][ T38] Showing all locks held in the system: [ 463.881999][ T38] locks held by pr/ttyS0/17: 3, last CPU#0: [ 463.882012][ T38] #0: ffffffff8e09d578 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x30/0x60 [ 463.882063][ T38] #1: ffffffff99e991f8 (&port_lock_key){+.+.}-{3:3}, at: nbcon_kthread_func+0x64c/0x880 [ 463.882109][ T38] #2: ffffffff8e1c3ac0 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e2/0x400 [ 463.882160][ T38] locks held by khungtaskd/38: 1, last CPU#1: [ 463.882172][ T38] #0: ffffffff8e1c3ac0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 463.882242][ T38] locks held by kworker/u8:22/3340: 2, on CPU#1: [ 463.882254][ T38] #0: ffff88813ff64138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 [ 463.882308][ T38] #1: ffffc9000ed87c40 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 [ 463.882357][ T38] locks held by getty/5356: 2, on CPU#0: [ 463.882369][ T38] #0: ffff888036d8b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 463.882418][ T38] #1: ffffc900044bb2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 [ 463.882464][ T38] locks held by syz-executor130/5658: 4, on CPU#0: [ 463.882476][ T38] #0: ffff888035a20510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 463.882523][ T38] #1: ffff88803260dc78 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 463.882577][ T38] #2: ffff8880278dc1e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 463.882628][ T38] #3: ffff888027964110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 463.882672][ T38] locks held by syz-executor130/5665: 4, on CPU#1: [ 463.882684][ T38] #0: ffff888035a20510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 463.882730][ T38] #1: ffff88803260f878 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 463.882777][ T38] #2: ffff8880278dc1e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 463.882826][ T38] #3: ffff888027964110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 463.882870][ T38] locks held by syz-executor130/5666: 4, on CPU#0: [ 463.882883][ T38] #0: ffff888035a20510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 463.882928][ T38] #1: ffff88803b07c478 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 463.882973][ T38] #2: ffff8880278dc1e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 463.883024][ T38] #3: ffff888027964110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 463.883068][ T38] locks held by syz-executor130/5674: 4, on CPU#0: [ 463.883080][ T38] #0: ffff888035a20510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 463.883126][ T38] #1: ffff88803296a878 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 463.883173][ T38] #2: ffff8880278dc1e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 463.883224][ T38] #3: ffff888027964110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 463.883267][ T38] locks held by syz-executor130/5675: 4, on CPU#1: [ 463.883279][ T38] #0: ffff888035a20510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 463.883331][ T38] #1: ffff88803296a478 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 463.883382][ T38] #2: ffff8880278dc1e8 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 463.883433][ T38] #3: ffff888027964110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 463.883476][ T38] [ 463.883482][ T38] ============================================= [ 463.883482][ T38] [ 463.883495][ T38] NMI backtrace for cpu 1 [ 463.883515][ T38] CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 463.883534][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 463.883543][ T38] Call Trace: [ 463.883550][ T38] [ 463.883557][ T38] dump_stack_lvl+0xe8/0x150 [ 463.883583][ T38] nmi_cpu_backtrace+0x274/0x2d0 [ 463.883608][ T38] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 463.883636][ T38] nmi_trigger_cpumask_backtrace+0x17d/0x390 [ 463.883662][ T38] sys_info+0x135/0x170 [ 463.883683][ T38] watchdog+0xfd7/0x1030 [ 463.883711][ T38] ? watchdog+0x1c7/0x1030 [ 463.883737][ T38] kthread+0x38b/0x470 [ 463.883755][ T38] ? __pfx_watchdog+0x10/0x10 [ 463.883773][ T38] ? __pfx_kthread+0x10/0x10 [ 463.883791][ T38] ret_from_fork+0x514/0xb70 [ 463.883811][ T38] ? __pfx_ret_from_fork+0x10/0x10 [ 463.883828][ T38] ? __switch_to+0xc89/0x1420 [ 463.883853][ T38] ? __pfx_kthread+0x10/0x10 [ 463.883870][ T38] ret_from_fork_asm+0x1a/0x30 [ 463.883901][ T38] [ 463.883908][ T38] Sending NMI from CPU 1 to CPUs 0: [ 463.883937][ C0] NMI backtrace for cpu 0 [ 463.883951][ C0] CPU: 0 UID: 0 PID: 17 Comm: pr/ttyS0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 463.883968][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 463.883976][ C0] RIP: 0010:io_serial_in+0x77/0xc0 [ 463.883996][ C0] Code: e8 be aa 65 fc 44 89 f9 d3 e3 49 83 ee 80 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 af 67 d1 fc 41 03 1e 89 da ec <0f> b6 c0 5b 41 5c 41 5e 41 5f c3 cc cc cc cc cc 44 89 f9 80 e1 07 [ 463.884009][ C0] RSP: 0018:ffffc900001678b8 EFLAGS: 00000202 [ 463.884023][ C0] RAX: 1ffffffff33d3200 RBX: 00000000000003fd RCX: 0000000000000000 [ 463.884033][ C0] RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000000 [ 463.884043][ C0] RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 [ 463.884053][ C0] R10: dffffc0000000000 R11: ffffffff8560ceb0 R12: dffffc0000000000 [ 463.884064][ C0] R13: 0000000000000000 R14: ffffffff99e99220 R15: 0000000000000000 [ 463.884074][ C0] FS: 0000000000000000(0000) GS:ffff888125bd4000(0000) knlGS:0000000000000000 [ 463.884087][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 463.884098][ C0] CR2: 0000557ee77ea660 CR3: 0000000046976000 CR4: 00000000003526f0 [ 463.884112][ C0] Call Trace: [ 463.884118][ C0] [ 463.884125][ C0] wait_for_lsr+0x190/0x300 [ 463.884144][ C0] __serial8250_console_fifo_write+0xd0/0x3f0 [ 463.884168][ C0] serial8250_console_write+0xac5/0x1230 [ 463.884189][ C0] ? __pfx_serial8250_console_write+0x10/0x10 [ 463.884212][ C0] nbcon_emit_next_record+0xef5/0x1a90 [ 463.884239][ C0] ? __pfx_nbcon_emit_next_record+0x10/0x10 [ 463.884261][ C0] ? nbcon_context_try_acquire+0x819/0xbd0 [ 463.884289][ C0] nbcon_kthread_func+0x679/0x880 [ 463.884311][ C0] ? nbcon_kthread_func+0x163/0x880 [ 463.884328][ C0] ? __pfx_nbcon_kthread_func+0x10/0x10 [ 463.884350][ C0] ? __kthread_parkme+0x71/0x1f0 [ 463.884372][ C0] ? __kthread_parkme+0x199/0x1f0 [ 463.884395][ C0] kthread+0x38b/0x470 [ 463.884410][ C0] ? __pfx_nbcon_kthread_func+0x10/0x10 [ 463.884427][ C0] ? __pfx_kthread+0x10/0x10 [ 463.884442][ C0] ret_from_fork+0x514/0xb70 [ 463.884458][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 463.884472][ C0] ? __switch_to+0xc89/0x1420 [ 463.884493][ C0] ? __pfx_kthread+0x10/0x10 [ 463.884508][ C0] ret_from_fork_asm+0x1a/0x30 [ 463.884529][ C0] [ 463.884939][ T38] Kernel panic - not syncing: hung_task: blocked tasks [ 464.862700][ T38] CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 464.872316][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 464.882377][ T38] Call Trace: [ 464.885650][ T38] [ 464.888565][ T38] vpanic+0x56d/0xa60 [ 464.892540][ T38] ? __pfx_vpanic+0x10/0x10 [ 464.897204][ T38] ? console_srcu_read_unlock+0x3a/0x60 [ 464.902765][ T38] panic+0xc5/0xd0 [ 464.906490][ T38] ? __pfx_panic+0x10/0x10 [ 464.910979][ T38] ? wq_watchdog_touch+0xf9/0x160 [ 464.915993][ T38] ? nmi_trigger_cpumask_backtrace+0x24d/0x390 [ 464.922146][ T38] watchdog+0x1030/0x1030 [ 464.926496][ T38] ? watchdog+0x1c7/0x1030 [ 464.930990][ T38] kthread+0x38b/0x470 [ 464.935046][ T38] ? __pfx_watchdog+0x10/0x10 [ 464.939719][ T38] ? __pfx_kthread+0x10/0x10 [ 464.944302][ T38] ret_from_fork+0x514/0xb70 [ 464.948883][ T38] ? __pfx_ret_from_fork+0x10/0x10 [ 464.953999][ T38] ? __switch_to+0xc89/0x1420 [ 464.958683][ T38] ? __pfx_kthread+0x10/0x10 [ 464.963446][ T38] ret_from_fork_asm+0x1a/0x30 [ 464.968324][ T38] [ 464.971577][ T38] Kernel Offset: disabled [ 464.975905][ T38] Rebooting in 86400 seconds..