ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor3772556548 <...> [ 87.029655][ T1243] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.107' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor3772556548", ["ci2-upstream-fs/syz-executor3772556548"], 0x7fffcdb20830 /* 10 vars */) = 0 brk(NULL) = 0x55555dd05000 brk(0x55555dd05d80) = 0x55555dd05d80 arch_prctl(ARCH_SET_FS, 0x55555dd05400) = 0 set_tid_address(0x55555dd056d0) = 5603 set_robust_list(0x55555dd056e0, 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-executor3772556548", 4096) = 44 getrandom("\x06\x92\x7c\x41\x1f\xb3\x75\x78", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555dd05d80 brk(0x55555dd26d80) = 0x55555dd26d80 brk(0x55555dd27000) = 0x55555dd27000 mprotect(0x7f807cabf000, 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 5604 attached , child_tidptr=0x55555dd056d0) = 5604 [pid 5604] set_robust_list(0x55555dd056e0, 24) = 0 [pid 5604] rt_sigprocmask(SIG_SETMASK, [] [pid 5603] rt_sigprocmask(SIG_SETMASK, [] [pid 5604] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5603] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "10000000000", 11) = 11 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "20", 2) = 2 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "0", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "0", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "100", 3) = 3 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "0", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "0", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "7 4 1 3", 7) = 7 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "Y", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "0", 1) = 1 [pid 5603] close(3) = 0 [pid 5603] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "5604", 4) = 4 [pid 5603] close(3) = 0 [pid 5603] kill(5604, SIGKILL) = 0 [pid 5604] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5604, 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 5605 attached , child_tidptr=0x55555dd056d0) = 5605 [pid 5605] set_robust_list(0x55555dd056e0, 24) = 0 [pid 5605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5605] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5603] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5605] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5603] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5603] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5606 attached [pid 5606] set_robust_list(0x55555dd056e0, 24 [pid 5605] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5606 [pid 5606] <... set_robust_list resumed>) = 0 [pid 5605] rt_sigprocmask(SIG_SETMASK, [] [pid 5606] rt_sigprocmask(SIG_SETMASK, [] [pid 5605] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5606] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5607 attached [pid 5603] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5607 [pid 5607] set_robust_list(0x55555dd056e0, 24 [pid 5606] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5603] rt_sigprocmask(SIG_SETMASK, [] [pid 5607] <... set_robust_list resumed>) = 0 [pid 5606] <... prctl resumed>) = 0 [pid 5603] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5606] setpgid(0, 0 [pid 5603] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5606] <... setpgid resumed>) = 0 [pid 5603] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5608 attached [pid 5607] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5607] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5608] set_robust_list(0x55555dd056e0, 24) = 0 [pid 5607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5608] rt_sigprocmask(SIG_SETMASK, [] [pid 5603] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5608 [pid 5606] <... openat resumed>) = 3 [pid 5603] rt_sigprocmask(SIG_SETMASK, [] [pid 5608] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5606] write(3, "1000", 4 [pid 5603] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5608] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5606] <... write resumed>) = 4 [pid 5603] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5608] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5606] close(3 [pid 5603] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5603] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5609 attached [pid 5608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5606] <... close resumed>) = 0 executing program [pid 5606] write(1, "executing program\n", 18) = 18 [pid 5607] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5609 [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5606] mkdirat(AT_FDCWD, "./sys", 0777ci2-upstream-fs/strace-static-x86_64: Process 5610 attached [pid 5609] set_robust_list(0x55555dd056e0, 24 [pid 5603] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5610 [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5610] set_robust_list(0x55555dd056e0, 24 [pid 5603] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5610] <... set_robust_list resumed>) = 0 [pid 5609] <... set_robust_list resumed>) = 0 [pid 5603] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5610] rt_sigprocmask(SIG_SETMASK, [] [pid 5609] rt_sigprocmask(SIG_SETMASK, []ci2-upstream-fs/strace-static-x86_64: Process 5611 attached , NULL, 8) = 0 [pid 5606] <... mkdirat resumed>) = 0 [pid 5608] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5611 [pid 5610] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5611] set_robust_list(0x55555dd056e0, 24 [pid 5610] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5608] rt_sigprocmask(SIG_SETMASK, [] [pid 5606] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5609] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5611] <... set_robust_list resumed>) = 0 [pid 5608] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5610] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5612 attached [pid 5611] rt_sigprocmask(SIG_SETMASK, [] [pid 5609] <... prctl resumed>) = 0 [pid 5606] <... mount resumed>) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5613 attached [pid 5603] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5612 [pid 5612] set_robust_list(0x55555dd056e0, 24 [pid 5611] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5609] setpgid(0, 0 [pid 5606] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5613] set_robust_list(0x55555dd056e0, 24 [pid 5611] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5603] rt_sigprocmask(SIG_SETMASK, [] [pid 5612] <... set_robust_list resumed>) = 0 [pid 5610] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5613 [pid 5603] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5613] <... set_robust_list resumed>) = 0 [pid 5612] rt_sigprocmask(SIG_SETMASK, [] [pid 5611] <... prctl resumed>) = 0 [pid 5610] rt_sigprocmask(SIG_SETMASK, [] [pid 5609] <... setpgid resumed>) = 0 [pid 5606] <... openat resumed>) = 3 [pid 5613] rt_sigprocmask(SIG_SETMASK, [] [pid 5612] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5611] setpgid(0, 0 [pid 5610] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5606] write(3, "- - -", 5 [pid 5613] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5612] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5611] <... setpgid resumed>) = 0 [pid 5613] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5612] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5609] <... openat resumed>) = 3 [pid 5612] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5609] write(3, "1000", 4 [pid 5611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5613] <... prctl resumed>) = 0 [pid 5613] setpgid(0, 0 [pid 5609] <... write resumed>) = 4 [pid 5609] close(3) = 0 [pid 5613] <... setpgid resumed>) = 0 [pid 5611] <... openat resumed>) = 3 executing program [pid 5609] write(1, "executing program\n", 18ci2-upstream-fs/strace-static-x86_64: Process 5614 attached [pid 5613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5611] write(3, "1000", 4 [pid 5609] <... write resumed>) = 18 [pid 5614] set_robust_list(0x55555dd056e0, 24 [pid 5613] <... openat resumed>) = 3 [pid 5612] <... clone resumed>, child_tidptr=0x55555dd056d0) = 5614 [pid 5611] <... write resumed>) = 4 [pid 5609] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5614] <... set_robust_list resumed>) = 0 [pid 5613] write(3, "1000", 4 [pid 5611] close(3 [pid 5614] rt_sigprocmask(SIG_SETMASK, [] [pid 5613] <... write resumed>) = 4 [pid 5612] rt_sigprocmask(SIG_SETMASK, [] [pid 5611] <... close resumed>) = 0 [pid 5609] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5614] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5613] close(3 [pid 5612] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5611] write(1, "executing program\n", 18 executing program [pid 5609] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5614] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5613] <... close resumed>) = 0 [pid 5611] <... write resumed>) = 18 [pid 5609] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5614] <... prctl resumed>) = 0 [pid 5613] write(1, "executing program\n", 18 [pid 5611] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5609] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5614] setpgid(0, 0 [pid 5613] <... write resumed>) = 18 [pid 5611] <... mkdirat resumed>) = -1 EEXIST (File exists) executing program [pid 5614] <... setpgid resumed>) = 0 [pid 5613] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5611] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5609] <... openat resumed>) = 3 [pid 5614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5609] write(3, "- - -", 5 [pid 5614] <... openat resumed>) = 3 [pid 5613] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5611] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5614] write(3, "1000", 4 [pid 5613] mount(NULL, "./sys", "sysfs", 0, NULL [pid 5611] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5614] <... write resumed>) = 4 [pid 5614] close(3 [pid 5613] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 5614] <... close resumed>) = 0 [pid 5613] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY [pid 5611] <... openat resumed>) = 3 [pid 5614] write(1, "executing program\n", 18) = 18 [pid 5611] write(3, "- - -", 5 [pid 5613] <... openat resumed>) = 3 executing program [pid 5614] mkdirat(AT_FDCWD, "./sys", 0777 [pid 5613] write(3, "- - -", 5 [pid 5614] <... mkdirat resumed>) = -1 EEXIST (File exists) [pid 5614] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5614] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5614] write(3, "- - -", 5 [pid 5605] kill(-5606, SIGKILL) = 0 [pid 5605] kill(5606, SIGKILL) = 0 [pid 5608] kill(-5611, SIGKILL [pid 5607] kill(-5609, SIGKILL [pid 5608] <... kill resumed>) = 0 [pid 5607] <... kill resumed>) = 0 [pid 5608] kill(5611, SIGKILL [pid 5607] kill(5609, SIGKILL [pid 5608] <... kill resumed>) = 0 [pid 5607] <... kill resumed>) = 0 [pid 5610] kill(-5613, SIGKILL) = 0 [pid 5610] kill(5613, SIGKILL) = 0 [pid 5612] kill(-5614, SIGKILL) = 0 [pid 5612] kill(5614, SIGKILL) = 0 [pid 5605] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5605] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5605] getdents64(3 [pid 5608] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5605] <... getdents64 resumed>, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5608] <... openat resumed>) = 3 [pid 5605] getdents64(3 [pid 5608] fstat(3 [pid 5605] <... getdents64 resumed>, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5608] <... fstat resumed>, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5605] close(3 [pid 5608] getdents64(3 [pid 5605] <... close resumed>) = 0 [pid 5608] <... getdents64 resumed>, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5608] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5608] close(3 [pid 5607] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5608] <... close resumed>) = 0 [pid 5607] <... openat resumed>) = 3 [pid 5607] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5607] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5607] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5607] close(3) = 0 [pid 5612] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5612] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5612] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5612] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5612] close(3 [pid 5610] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5612] <... close resumed>) = 0 [pid 5610] <... openat resumed>) = 3 [pid 5610] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5610] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5610] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5610] close(3) = 0 [pid 5606] <... write resumed>) = ? [pid 5606] +++ killed by SIGKILL +++ [pid 5605] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5606, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5605] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5636 attached , child_tidptr=0x55555dd056d0) = 5636 [pid 5605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] set_robust_list(0x55555dd056e0, 24) = 0 [pid 5636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5636] setpgid(0, 0) = 0 [pid 5636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5636] write(3, "1000", 4) = 4 [pid 5636] close(3) = 0 executing program [pid 5636] write(1, "executing program\n", 18) = 18 [pid 5636] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5636] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5636] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5636] write(3, "- - -", 5 [pid 5605] kill(-5636, SIGKILL) = 0 [pid 5605] kill(5636, SIGKILL) = 0 [pid 5605] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5605] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5605] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5605] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5605] close(3) = 0 [pid 5609] <... write resumed>) = ? [pid 5609] +++ killed by SIGKILL +++ [pid 5607] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5609, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5607] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5607] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5637 attached , child_tidptr=0x55555dd056d0) = 5637 [pid 5637] set_robust_list(0x55555dd056e0, 24) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5607] rt_sigprocmask(SIG_SETMASK, [] [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5607] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] setpgid(0, 0) = 0 [pid 5637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5637] write(3, "1000", 4) = 4 [pid 5637] close(3) = 0 [pid 5637] write(1, "executing program\n", 18) = 18 executing program [pid 5637] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5637] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5637] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5637] write(3, "- - -", 5 [pid 5607] kill(-5637, SIGKILL) = 0 [pid 5607] kill(5637, SIGKILL) = 0 [pid 5607] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5607] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5607] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5607] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5607] close(3) = 0 [pid 5611] <... write resumed>) = ? [pid 5611] +++ killed by SIGKILL +++ [pid 5608] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5611, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5608] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5644 attached , child_tidptr=0x55555dd056d0) = 5644 [pid 5644] set_robust_list(0x55555dd056e0, 24 [pid 5608] rt_sigprocmask(SIG_SETMASK, [] [pid 5644] <... set_robust_list resumed>) = 0 [pid 5644] rt_sigprocmask(SIG_SETMASK, [] [pid 5608] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5644] setpgid(0, 0) = 0 [pid 5644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5644] write(3, "1000", 4) = 4 [pid 5644] close(3) = 0 [pid 5644] write(1, "executing program\n", 18) = 18 executing program [pid 5644] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5644] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5644] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5644] write(3, "- - -", 5 [pid 5608] kill(-5644, SIGKILL) = 0 [pid 5608] kill(5644, SIGKILL) = 0 [pid 5608] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5608] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5608] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5608] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5608] close(3) = 0 [pid 5613] <... write resumed>) = ? [pid 5613] +++ killed by SIGKILL +++ [pid 5610] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5613, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5610] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5610] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5645 attached , child_tidptr=0x55555dd056d0) = 5645 [pid 5645] set_robust_list(0x55555dd056e0, 24) = 0 [pid 5610] rt_sigprocmask(SIG_SETMASK, [] [pid 5645] rt_sigprocmask(SIG_SETMASK, [] [pid 5610] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5645] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5645] setpgid(0, 0) = 0 [pid 5645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5645] write(3, "1000", 4) = 4 [pid 5645] close(3) = 0 [pid 5645] write(1, "executing program\n", 18) = 18 executing program [pid 5645] mkdirat(AT_FDCWD, "./sys", 0777) = -1 EEXIST (File exists) [pid 5645] mount(NULL, "./sys", "sysfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5645] openat(AT_FDCWD, "./sys/class/scsi_host/host0/scan", O_WRONLY) = 3 [pid 5645] write(3, "- - -", 5 [pid 5610] kill(-5645, SIGKILL) = 0 [pid 5610] kill(5645, SIGKILL) = 0 [pid 5610] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5610] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 5610] getdents64(3, 0x55555dd06790 /* 2 entries */, 32768) = 48 [pid 5610] getdents64(3, 0x55555dd06790 /* 0 entries */, 32768) = 0 [pid 5610] close(3) = 0 [ 275.819443][ T38] INFO: task syz-executor377:5636 blocked f ** replaying previous printk message ** [ 275.819443][ T38] INFO: task syz-executor377:5636 blocked for more than 143 seconds. [ 275.821539][ T38] Not tainted syzkaller #0 [ 275.821555][ T38] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 275.821564][ T38] task:syz-executor377 state:D stack:27360 pid:5636 tgid:5636 ppid:5605 task_flags:0x400140 flags:0x00080002 [ 275.821624][ T38] Call Trace: [ 275.821633][ T38] [ 275.821646][ T38] __schedule+0x16d9/0x5700 [ 275.821737][ T38] ? __pfx___schedule+0x10/0x10 [ 275.821775][ T38] rt_mutex_schedule+0x76/0xf0 [ 275.821800][ T38] rt_mutex_slowlock_block+0x55e/0x690 [ 275.821866][ T38] rt_mutex_slowlock+0x2d4/0x780 [ 275.821900][ T38] ? rt_mutex_slowlock+0x1f2/0x780 [ 275.821930][ T38] ? __pfx_rt_mutex_slowlock+0x10/0x10 [ 275.821976][ T38] ? scsi_scan_host_selected+0x19f/0x6c0 [ 275.822013][ T38] ? scsi_scan_host_selected+0x19f/0x6c0 [ 275.822034][ T38] mutex_lock_nested+0x168/0x1d0 [ 275.822069][ T38] scsi_scan_host_selected+0x19f/0x6c0 [ 275.822105][ T38] store_scan+0x4aa/0x540 [ 275.822133][ T38] ? __pfx_store_scan+0x10/0x10 [ 275.822162][ T38] ? lock_acquire+0x115/0x350 [ 275.822186][ T38] ? sysfs_file_kobj+0x1a/0x230 [ 275.822213][ T38] ? sysfs_break_active_protection+0x90/0xa0 [ 275.822243][ T38] ? sysfs_file_kobj+0x1a/0x230 [ 275.822261][ T38] ? sysfs_file_kobj+0x1a/0x230 [ 275.822281][ T38] ? sysfs_file_kobj+0x1e4/0x230 [ 275.822302][ T38] ? sysfs_kf_write+0x166/0x260 [ 275.822326][ T38] ? __pfx_sysfs_kf_write+0x10/0x10 [ 275.822345][ T38] kernfs_fop_write_iter+0x3a5/0x540 [ 275.822380][ T38] vfs_write+0x61e/0xbb0 [ 275.822413][ T38] ? __pfx_vfs_write+0x10/0x10 [ 275.822465][ T38] ? rt_spin_unlock+0x159/0x200 [ 275.822489][ T38] ? rt_spin_unlock+0x165/0x200 [ 275.822517][ T38] ksys_write+0x156/0x270 [ 275.822543][ T38] ? __pfx_ksys_write+0x10/0x10 [ 275.822578][ T38] do_syscall_64+0x166/0x520 [ 275.822600][ T38] ? trace_irq_disable+0x3b/0x140 [ 275.822624][ T38] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 275.822644][ T38] ? clear_bhb_loop+0x70/0xc0 [ 275.822668][ T38] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 275.822688][ T38] RIP: 0033:0x7f807ca2c8b9 [ 275.822706][ T38] RSP: 002b:00007fff0ccdc3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 275.822727][ T38] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f807ca2c8b9 [ 275.822741][ T38] RDX: 0000000000000005 RSI: 0000200000001400 RDI: 0000000000000003 [ 275.822754][ T38] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 275.822766][ T38] R10: 0000000000000009 R11: 0000000000000246 R12: 00000000000165e2 [ 275.822778][ T38] R13: 00007fff0ccdc3fc R14: 00007fff0ccdc410 R15: 00007fff0ccdc400 [ 275.822810][ T38] [ 275.822824][ T38] [ 275.822824][ T38] Showing all locks held in the system: [ 275.822833][ T38] locks held by pr/ttyS0/17: 3, last CPU#1: [ 275.822847][ T38] #0: ffffffff8e09d5f8 (console_srcu){....}-{0:0}, at: console_srcu_read_lock+0x30/0x60 [ 275.822905][ T38] #1: ffffffff99e9c1f8 (&port_lock_key){+.+.}-{3:3}, at: nbcon_kthread_func+0x64c/0x880 [ 275.822957][ T38] #2: ffffffff8e1c3b40 (rcu_read_lock){....}-{1:3}, at: rt_spin_lock+0x1e2/0x400 [ 275.823003][ T38] locks held by khungtaskd/38: 1, last CPU#0: [ 275.823016][ T38] #0: ffffffff8e1c3b40 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 275.823091][ T38] locks held by getty/5342: 2, on CPU#1: [ 275.823105][ T38] #0: ffff88803329a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 275.823160][ T38] #1: ffffc900044c32e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 [ 275.823212][ T38] locks held by syz-executor377/5614: 4, last CPU#1: [ 275.823234][ T38] #0: ffff888035832510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 275.823287][ T38] #1: ffff888033372478 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 275.823343][ T38] #2: ffff8880273f1c38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 275.823402][ T38] #3: ffff88801fae0110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 275.823453][ T38] locks held by syz-executor377/5636: 4, on CPU#0: [ 275.823466][ T38] #0: ffff888035832510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 275.823518][ T38] #1: ffff888033373878 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 275.823571][ T38] #2: ffff8880273f1c38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 275.823630][ T38] #3: ffff88801fae0110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 275.823679][ T38] locks held by syz-executor377/5637: 4, on CPU#0: [ 275.823692][ T38] #0: ffff888035832510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 275.823745][ T38] #1: ffff888034221c78 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 275.823799][ T38] #2: ffff8880273f1c38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 275.823858][ T38] #3: ffff88801fae0110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 275.823907][ T38] locks held by syz-executor377/5644: 4, on CPU#0: [ 275.823920][ T38] #0: ffff888035832510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 275.823973][ T38] #1: ffff888034221078 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 275.824027][ T38] #2: ffff8880273f1c38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 275.824086][ T38] #3: ffff88801fae0110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 275.824137][ T38] locks held by syz-executor377/5645: 4, on CPU#1: [ 275.824150][ T38] #0: ffff888035832510 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x231/0xbb0 [ 275.824202][ T38] #1: ffff888034221478 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d9/0x540 [ 275.824263][ T38] #2: ffff8880273f1c38 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22c/0x540 [ 275.824322][ T38] #3: ffff88801fae0110 (&shost->scan_mutex){+.+.}-{4:4}, at: scsi_scan_host_selected+0x19f/0x6c0 [ 275.824372][ T38] [ 275.824377][ T38] ============================================= [ 275.824377][ T38] [ 275.824386][ T38] NMI backtrace for cpu 0 [ 275.824400][ T38] CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 275.824421][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 275.824431][ T38] Call Trace: [ 275.824439][ T38] [ 275.824447][ T38] dump_stack_lvl+0xe8/0x150 [ 275.824475][ T38] nmi_cpu_backtrace+0x274/0x2d0 [ 275.824495][ T38] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 275.824527][ T38] nmi_trigger_cpumask_backtrace+0x17d/0x390 [ 275.824549][ T38] sys_info+0x135/0x170 [ 275.824575][ T38] watchdog+0xfd7/0x1030 [ 275.824606][ T38] ? watchdog+0x1c7/0x1030 [ 275.824636][ T38] kthread+0x38b/0x470 [ 275.824657][ T38] ? __pfx_watchdog+0x10/0x10 [ 275.824678][ T38] ? __pfx_kthread+0x10/0x10 [ 275.824718][ T38] ret_from_fork+0x514/0xb70 [ 275.824742][ T38] ? __pfx_ret_from_fork+0x10/0x10 [ 275.824761][ T38] ? __switch_to+0xc89/0x1420 [ 275.824790][ T38] ? __pfx_kthread+0x10/0x10 [ 275.824811][ T38] ret_from_fork_asm+0x1a/0x30 [ 275.824845][ T38] [ 275.824852][ T38] Sending NMI from CPU 0 to CPUs 1: [ 275.824882][ C1] NMI backtrace for cpu 1 [ 275.824897][ C1] CPU: 1 UID: 0 PID: 17 Comm: pr/ttyS0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 275.824916][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 275.824925][ C1] RIP: 0010:io_serial_in+0x77/0xc0 [ 275.824950][ C1] Code: e8 4e 81 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 [ 275.824964][ C1] RSP: 0018:ffffc900001678b8 EFLAGS: 00000202 [ 275.824980][ C1] RAX: 1ffffffff33d3800 RBX: 00000000000003fd RCX: 0000000000000000 [ 275.824992][ C1] RDX: 00000000000003fd RSI: 0000000000000000 RDI: 0000000000000000 [ 275.825003][ C1] RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 [ 275.825013][ C1] R10: dffffc0000000000 R11: ffffffff85610c70 R12: dffffc0000000000 [ 275.825025][ C1] R13: 0000000000000000 R14: ffffffff99e9c220 R15: 0000000000000000 [ 275.825036][ C1] FS: 0000000000000000(0000) GS:ffff888125cd1000(0000) knlGS:0000000000000000 [ 275.825050][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 275.825062][ C1] CR2: 0000563d89738168 CR3: 0000000047852000 CR4: 00000000003526f0 [ 275.825078][ C1] Call Trace: [ 275.825085][ C1] [ 275.825093][ C1] wait_for_lsr+0x190/0x300 [ 275.825114][ C1] __serial8250_console_fifo_write+0xd0/0x3f0 [ 275.825142][ C1] serial8250_console_write+0xac5/0x1230 [ 275.825165][ C1] ? __pfx_serial8250_console_write+0x10/0x10 [ 275.825190][ C1] nbcon_emit_next_record+0xef5/0x1a90 [ 275.825219][ C1] ? __pfx_nbcon_emit_next_record+0x10/0x10 [ 275.825244][ C1] ? nbcon_context_try_acquire+0x819/0xbd0 [ 275.825274][ C1] nbcon_kthread_func+0x679/0x880 [ 275.825298][ C1] ? nbcon_kthread_func+0x163/0x880 [ 275.825317][ C1] ? __pfx_nbcon_kthread_func+0x10/0x10 [ 275.825341][ C1] ? __kthread_parkme+0x71/0x1f0 [ 275.825365][ C1] ? __kthread_parkme+0x199/0x1f0 [ 275.825390][ C1] kthread+0x38b/0x470 [ 275.825406][ C1] ? __pfx_nbcon_kthread_func+0x10/0x10 [ 275.825425][ C1] ? __pfx_kthread+0x10/0x10 [ 275.825442][ C1] ret_from_fork+0x514/0xb70 [ 275.825459][ C1] ? __pfx_ret_from_fork+0x10/0x10 [ 275.825474][ C1] ? __switch_to+0xc89/0x1420 [ 275.825497][ C1] ? __pfx_kthread+0x10/0x10 [ 275.825514][ C1] ret_from_fork_asm+0x1a/0x30 [ 275.825536][ C1] [ 275.825875][ T38] Kernel panic - not syncing: hung_task: blocked tasks [ 276.760291][ T38] CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 276.769913][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 276.779967][ T38] Call Trace: [ 276.783258][ T38] [ 276.786208][ T38] vpanic+0x56d/0xa60 [ 276.790209][ T38] ? __pfx_vpanic+0x10/0x10 [ 276.794729][ T38] ? console_srcu_read_unlock+0x3a/0x60 [ 276.800294][ T38] panic+0xc5/0xd0 [ 276.804014][ T38] ? __pfx_panic+0x10/0x10 [ 276.808421][ T38] ? wq_watchdog_touch+0xf9/0x160 [ 276.813452][ T38] ? nmi_trigger_cpumask_backtrace+0x24d/0x390 [ 276.819615][ T38] watchdog+0x1030/0x1030 [ 276.823952][ T38] ? watchdog+0x1c7/0x1030 [ 276.828368][ T38] kthread+0x38b/0x470 [ 276.832439][ T38] ? __pfx_watchdog+0x10/0x10 [ 276.837116][ T38] ? __pfx_kthread+0x10/0x10 [ 276.841697][ T38] ret_from_fork+0x514/0xb70 [ 276.846297][ T38] ? __pfx_ret_from_fork+0x10/0x10 [ 276.851400][ T38] ? __switch_to+0xc89/0x1420 [ 276.856088][ T38] ? __pfx_kthread+0x10/0x10 [ 276.860700][ T38] ret_from_fork_asm+0x1a/0x30 [ 276.865488][ T38] [ 276.868840][ T38] Kernel Offset: disabled [ 276.873205][ T38] Rebooting in 86400 seconds..