ci-upstream-net-kasan-gce/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-net-kasan-gce/syz-executor523194006 <...> Warning: Permanently added '10.128.0.145' (ED25519) to the list of known hosts. execve("ci-upstream-net-kasan-gce/syz-executor523194006", ["ci-upstream-net-kasan-gce/syz-executor523194006"], 0x7ffd2933c8f0 /* 10 vars */) = 0 brk(NULL) = 0x55557567f000 brk(0x55557567fd80) = 0x55557567fd80 arch_prctl(ARCH_SET_FS, 0x55557567f400) = 0 set_tid_address(0x55557567f6d0) = 5641 set_robust_list(0x55557567f6e0, 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/ci-upstream-net-kasan-gce/syz-executor523194006", 4096) = 53 getrandom("\xa8\x0b\x95\x1a\xd2\x51\xde\x36", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557567fd80 brk(0x5555756a0d80) = 0x5555756a0d80 brk(0x5555756a1000) = 0x5555756a1000 mprotect(0x7fa991c73000, 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|SIGCHLD, child_tidptr=0x55557567f6d0) = 5642 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5642 attached [pid 5641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5641] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5642] set_robust_list(0x55557567f6e0, 24) = 0 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5643 attached [pid 5641] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5643 [pid 5642] rt_sigprocmask(SIG_SETMASK, [] [pid 5643] set_robust_list(0x55557567f6e0, 24) = 0 [pid 5643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [] [pid 5642] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5643] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5643] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5641] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5642] rt_sigprocmask(SIG_BLOCK, ~[]ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5644 attached [pid 5641] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5642] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5641] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5644] set_robust_list(0x55557567f6e0, 24 [pid 5643] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5644 [pid 5644] <... set_robust_list resumed>) = 0 [pid 5643] rt_sigprocmask(SIG_SETMASK, [] [pid 5642] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5641] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5644] rt_sigprocmask(SIG_SETMASK, [] [pid 5643] <... 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", 4ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5646 attached ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5645 attached [pid 5641] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5646 [pid 5646] set_robust_list(0x55557567f6e0, 24 [pid 5645] set_robust_list(0x55557567f6e0, 24 [pid 5644] <... write resumed>) = 4 [pid 5642] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5645 [pid 5641] rt_sigprocmask(SIG_SETMASK, [] [pid 5646] <... set_robust_list resumed>) = 0 [pid 5645] <... set_robust_list resumed>) = 0 [pid 5644] close(3 [pid 5641] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5646] rt_sigprocmask(SIG_SETMASK, [] [pid 5645] rt_sigprocmask(SIG_SETMASK, [] [pid 5644] <... close resumed>) = 0 [pid 5642] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5644] write(1, "executing program\n", 18 [pid 5641] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5645] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] <... write resumed>) = 18 [pid 5642] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 5641] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5645] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5644] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5646] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5644] <... socket resumed>) = 3 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5647 attached [pid 5646] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5645] <... prctl resumed>) = 0 [pid 5644] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ECHO, nlmsg_seq=7388458, nlmsg_pid=635427837}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_PEEK|MSG_ZEROCOPY}, MSG_EOR|MSG_ZEROCOPY [pid 5641] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5647 [pid 5647] set_robust_list(0x55557567f6e0, 24 [pid 5646] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5645] setpgid(0, 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [] [pid 5646] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5645] <... setpgid resumed>) = 0 [pid 5647] <... set_robust_list resumed>) = 0 [pid 5645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5641] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5645] <... openat resumed>) = 3 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5647] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5641] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5641] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5645] write(3, "1000", 4 [pid 5647] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5645] <... write resumed>) = 4 [pid 5645] close(3) = 0 [pid 5645] write(1, "executing program\n", 18 [pid 5647] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5645] <... write resumed>) = 18 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5648 attached executing program ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5649 attached [pid 5648] set_robust_list(0x55557567f6e0, 24 [pid 5645] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5649] set_robust_list(0x55557567f6e0, 24 [pid 5648] <... set_robust_list resumed>) = 0 [pid 5646] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5649 [pid 5645] <... socket resumed>) = 3 [pid 5646] rt_sigprocmask(SIG_SETMASK, [] [pid 5645] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ECHO, nlmsg_seq=7388458, nlmsg_pid=635427837}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_PEEK|MSG_ZEROCOPY}, MSG_EOR|MSG_ZEROCOPYci-upstream-net-kasan-gce/strace-static-x86_64: Process 5650 attached [pid 5641] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5648 [pid 5649] <... set_robust_list resumed>) = 0 [pid 5648] rt_sigprocmask(SIG_SETMASK, [] [pid 5646] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5641] rt_sigprocmask(SIG_SETMASK, [] [pid 5647] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5650 [pid 5641] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5647] rt_sigprocmask(SIG_SETMASK, [] [pid 5650] set_robust_list(0x55557567f6e0, 24 [pid 5649] rt_sigprocmask(SIG_SETMASK, [] [pid 5648] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5647] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5648] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5650] <... set_robust_list resumed>) = 0 [pid 5649] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5650] rt_sigprocmask(SIG_SETMASK, [] [pid 5649] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5648] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5650] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5649] <... prctl resumed>) = 0 [pid 5648] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5650] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5649] setpgid(0, 0ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5652 attached [pid 5650] <... prctl resumed>) = 0 [pid 5649] <... setpgid resumed>) = 0 [pid 5648] <... clone resumed>, child_tidptr=0x55557567f6d0) = 5652 [pid 5649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5652] set_robust_list(0x55557567f6e0, 24 [pid 5650] setpgid(0, 0 [pid 5648] rt_sigprocmask(SIG_SETMASK, [] [pid 5650] <... setpgid resumed>) = 0 [pid 5649] <... openat resumed>) = 3 [pid 5648] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5652] <... set_robust_list resumed>) = 0 [pid 5650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5652] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5650] <... openat resumed>) = 3 [pid 5652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5649] write(3, "1000", 4 [pid 5652] <... prctl resumed>) = 0 [pid 5652] setpgid(0, 0 [pid 5649] <... write resumed>) = 4 [pid 5652] <... setpgid resumed>) = 0 [pid 5652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5650] write(3, "1000", 4 [pid 5649] close(3 [pid 5650] <... write resumed>) = 4 [pid 5649] <... close resumed>) = 0 [pid 5652] write(3, "1000", 4 [pid 5650] close(3 [pid 5649] write(1, "executing program\n", 18 [pid 5652] <... write resumed>) = 4 executing program executing program [pid 5649] <... write resumed>) = 18 [pid 5652] close(3 [pid 5650] <... close resumed>) = 0 [pid 5650] write(1, "executing program\n", 18 [pid 5649] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5650] <... write resumed>) = 18 [pid 5652] <... close resumed>) = 0 [pid 5650] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5649] <... socket resumed>) = 3 [pid 5652] write(1, "executing program\n", 18) = 18 executing program [pid 5652] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 5650] <... socket resumed>) = 3 [pid 5649] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ECHO, nlmsg_seq=7388458, nlmsg_pid=635427837}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_PEEK|MSG_ZEROCOPY}, MSG_EOR|MSG_ZEROCOPY [pid 5652] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ECHO, nlmsg_seq=7388458, nlmsg_pid=635427837}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_PEEK|MSG_ZEROCOPY}, MSG_EOR|MSG_ZEROCOPY [pid 5650] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=20, nlmsg_type=0x27 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST|NLM_F_ECHO, nlmsg_seq=7388458, nlmsg_pid=635427837}, "\x06\x00\x00\x00"], iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_PEEK|MSG_ZEROCOPY}, MSG_EOR|MSG_ZEROCOPY [pid 5644] <... sendmsg resumed>) = 20 [pid 5644] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [ 286.513579][ T31] INFO: task syz-executor523:5649 blocked for more than 143 seconds. [ 286.513630][ T31] Not tainted syzkaller #0 [ 286.513639][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.513648][ T31] task:syz-executor523 state:D stack:27472 pid:5649 tgid:5649 ppid:5646 task_flags:0x400140 flags:0x00080002 [ 286.513713][ T31] Call Trace: [ 286.513722][ T31] [ 286.513737][ T31] __schedule+0x17db/0x58f0 [ 286.513809][ T31] ? __pfx___schedule+0x10/0x10 [ 286.513863][ T31] ? schedule+0x90/0x2b0 [ 286.513881][ T31] schedule+0x164/0x2b0 [ 286.513897][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.513913][ T31] __mutex_lock+0x7c1/0x1550 [ 286.513935][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.513954][ T31] ? nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.513981][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.513997][ T31] ? __kasan_kmalloc+0x93/0xb0 [ 286.514021][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.514041][ T31] ? do_syscall_64+0x166/0x520 [ 286.514057][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.514080][ T31] nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.514105][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.514137][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.514157][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.514185][ T31] ? __kmalloc_noprof+0x38c/0x720 [ 286.514202][ T31] ? __nla_parse+0x40/0x60 [ 286.514224][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 286.514243][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 286.514267][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 286.514291][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 286.514327][ T31] ? bpf_lsm_capable+0x9/0x20 [ 286.514341][ T31] ? security_capable+0x7e/0x2c0 [ 286.514364][ T31] genl_rcv_msg+0x614/0x7a0 [ 286.514387][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.514404][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.514435][ T31] netlink_rcv_skb+0x226/0x4a0 [ 286.514459][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.514478][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 286.514512][ T31] ? down_read+0x2be/0x330 [ 286.514534][ T31] genl_rcv+0x28/0x40 [ 286.514550][ T31] netlink_unicast+0x7bd/0x940 [ 286.514579][ T31] netlink_sendmsg+0x813/0xb40 [ 286.514609][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.514639][ T31] ? apparmor_socket_sendmsg+0x98/0x360 [ 286.514655][ T31] ? rcu_is_watching+0x16/0xb0 [ 286.514675][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.514697][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 286.514725][ T31] ____sys_sendmsg+0x54e/0x850 [ 286.514750][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 286.514778][ T31] ? import_iovec+0x73/0xa0 [ 286.514803][ T31] ___sys_sendmsg+0x2a5/0x360 [ 286.514824][ T31] ? __lock_acquire+0x747/0x2de0 [ 286.514844][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 286.514900][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 286.514920][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.514946][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 286.514973][ T31] ? do_user_addr_fault+0xc4c/0x1340 [ 286.514997][ T31] do_syscall_64+0x166/0x520 [ 286.515013][ T31] ? trace_irq_disable+0x3b/0x140 [ 286.515029][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.515045][ T31] ? clear_bhb_loop+0x70/0xc0 [ 286.515065][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.515081][ T31] RIP: 0033:0x7fa991be06f9 [ 286.515100][ T31] RSP: 002b:00007ffc9d2276f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 286.515117][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa991be06f9 [ 286.515128][ T31] RDX: 0000000004000080 RSI: 0000200000000100 RDI: 0000000000000003 [ 286.515138][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 286.515148][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa991c781e0 [ 286.515158][ T31] R13: 0000000000000002 R14: 00007ffc9d227720 R15: 00007ffc9d227710 [ 286.515181][ T31] [ 286.515194][ T31] INFO: task syz-executor523:5650 blocked for more than 143 seconds. [ 286.515206][ T31] Not tainted syzkaller #0 [ 286.515213][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.515220][ T31] task:syz-executor523 state:D stack:27472 pid:5650 tgid:5650 ppid:5647 task_flags:0x400140 flags:0x00080002 [ 286.515265][ T31] Call Trace: [ 286.515270][ T31] [ 286.515279][ T31] __schedule+0x17db/0x58f0 [ 286.515330][ T31] ? __pfx___schedule+0x10/0x10 [ 286.515361][ T31] ? schedule+0x90/0x2b0 [ 286.515378][ T31] schedule+0x164/0x2b0 [ 286.515395][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.515427][ T31] __mutex_lock+0x7c1/0x1550 [ 286.515448][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.515468][ T31] ? nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.515490][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.515506][ T31] ? __kasan_kmalloc+0x93/0xb0 [ 286.515529][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.515548][ T31] ? do_syscall_64+0x166/0x520 [ 286.515564][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.515587][ T31] nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.515611][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.515643][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.515664][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.515691][ T31] ? __kmalloc_noprof+0x38c/0x720 [ 286.515708][ T31] ? __nla_parse+0x40/0x60 [ 286.515730][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 286.515749][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 286.515773][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 286.515799][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 286.515827][ T31] ? bpf_lsm_capable+0x9/0x20 [ 286.515840][ T31] ? security_capable+0x7e/0x2c0 [ 286.515863][ T31] genl_rcv_msg+0x614/0x7a0 [ 286.515885][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.515902][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.515932][ T31] netlink_rcv_skb+0x226/0x4a0 [ 286.515956][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.515975][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 286.516009][ T31] ? down_read+0x2be/0x330 [ 286.516030][ T31] genl_rcv+0x28/0x40 [ 286.516046][ T31] netlink_unicast+0x7bd/0x940 [ 286.516075][ T31] netlink_sendmsg+0x813/0xb40 [ 286.516105][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.516135][ T31] ? apparmor_socket_sendmsg+0x98/0x360 [ 286.516151][ T31] ? rcu_is_watching+0x16/0xb0 [ 286.516170][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.516193][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 286.516220][ T31] ____sys_sendmsg+0x54e/0x850 [ 286.516245][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 286.516272][ T31] ? import_iovec+0x73/0xa0 [ 286.516299][ T31] ___sys_sendmsg+0x2a5/0x360 [ 286.516320][ T31] ? __lock_acquire+0x747/0x2de0 [ 286.516338][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 286.516395][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 286.516415][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.516440][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 286.516467][ T31] ? do_user_addr_fault+0xc4c/0x1340 [ 286.516494][ T31] do_syscall_64+0x166/0x520 [ 286.516510][ T31] ? trace_irq_disable+0x3b/0x140 [ 286.516526][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.516542][ T31] ? clear_bhb_loop+0x70/0xc0 [ 286.516561][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.516577][ T31] RIP: 0033:0x7fa991be06f9 [ 286.516590][ T31] RSP: 002b:00007ffc9d2276f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 286.516605][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa991be06f9 [ 286.516616][ T31] RDX: 0000000004000080 RSI: 0000200000000100 RDI: 0000000000000003 [ 286.516626][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 286.516636][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa991c781e0 [ 286.516646][ T31] R13: 0000000000000002 R14: 00007ffc9d227720 R15: 00007ffc9d227710 [ 286.516669][ T31] [ 286.516676][ T31] INFO: task syz-executor523:5652 blocked for more than 143 seconds. [ 286.516687][ T31] Not tainted syzkaller #0 [ 286.516694][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.516701][ T31] task:syz-executor523 state:D stack:27432 pid:5652 tgid:5652 ppid:5648 task_flags:0x400140 flags:0x00080002 [ 286.516744][ T31] Call Trace: [ 286.516749][ T31] [ 286.516758][ T31] __schedule+0x17db/0x58f0 [ 286.516794][ T31] ? trace_irq_disable+0x3b/0x140 [ 286.516818][ T31] ? __pfx___schedule+0x10/0x10 [ 286.516849][ T31] ? schedule+0x90/0x2b0 [ 286.516866][ T31] schedule+0x164/0x2b0 [ 286.516883][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.516897][ T31] __mutex_lock+0x7c1/0x1550 [ 286.516918][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.516938][ T31] ? nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.516960][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.516976][ T31] ? __kasan_kmalloc+0x93/0xb0 [ 286.516998][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.517017][ T31] ? do_syscall_64+0x166/0x520 [ 286.517033][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.517056][ T31] nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.517081][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.517113][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.517133][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.517160][ T31] ? __kmalloc_noprof+0x38c/0x720 [ 286.517177][ T31] ? __nla_parse+0x40/0x60 [ 286.517200][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 286.517225][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 286.517250][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 286.517273][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 286.517305][ T31] ? bpf_lsm_capable+0x9/0x20 [ 286.517318][ T31] ? security_capable+0x7e/0x2c0 [ 286.517341][ T31] genl_rcv_msg+0x614/0x7a0 [ 286.517363][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.517380][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.517411][ T31] netlink_rcv_skb+0x226/0x4a0 [ 286.517434][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.517453][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 286.517487][ T31] ? down_read+0x2be/0x330 [ 286.517508][ T31] genl_rcv+0x28/0x40 [ 286.517524][ T31] netlink_unicast+0x7bd/0x940 [ 286.517553][ T31] netlink_sendmsg+0x813/0xb40 [ 286.517583][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.517612][ T31] ? apparmor_socket_sendmsg+0x98/0x360 [ 286.517631][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.517654][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 286.517681][ T31] ____sys_sendmsg+0x54e/0x850 [ 286.517705][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 286.517732][ T31] ? import_iovec+0x73/0xa0 [ 286.517754][ T31] ___sys_sendmsg+0x2a5/0x360 [ 286.517774][ T31] ? __lock_acquire+0x747/0x2de0 [ 286.517793][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 286.517849][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 286.517869][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.517895][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 286.517922][ T31] ? do_user_addr_fault+0xc4c/0x1340 [ 286.517945][ T31] do_syscall_64+0x166/0x520 [ 286.517961][ T31] ? trace_irq_disable+0x3b/0x140 [ 286.517976][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.517992][ T31] ? clear_bhb_loop+0x70/0xc0 [ 286.518012][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.518035][ T31] RIP: 0033:0x7fa991be06f9 [ 286.518051][ T31] RSP: 002b:00007ffc9d2276f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 286.518072][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa991be06f9 [ 286.518083][ T31] RDX: 0000000004000080 RSI: 0000200000000100 RDI: 0000000000000003 [ 286.518093][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 286.518103][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa991c781e0 [ 286.518113][ T31] R13: 0000000000000002 R14: 00007ffc9d227720 R15: 00007ffc9d227710 [ 286.518141][ T31] [ 286.518147][ T31] INFO: task syz-executor523:5658 blocked for more than 143 seconds. [ 286.518158][ T31] Not tainted syzkaller #0 [ 286.518165][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.518172][ T31] task:syz-executor523 state:D stack:27368 pid:5658 tgid:5658 ppid:5643 task_flags:0x400140 flags:0x00080002 [ 286.518216][ T31] Call Trace: [ 286.518221][ T31] [ 286.518230][ T31] __schedule+0x17db/0x58f0 [ 286.518275][ T31] ? __pfx___schedule+0x10/0x10 [ 286.518311][ T31] ? schedule+0x90/0x2b0 [ 286.518328][ T31] schedule+0x164/0x2b0 [ 286.518345][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.518360][ T31] __mutex_lock+0x7c1/0x1550 [ 286.518380][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.518400][ T31] ? nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.518422][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.518438][ T31] ? __kasan_kmalloc+0x93/0xb0 [ 286.518460][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.518480][ T31] ? do_syscall_64+0x166/0x520 [ 286.518496][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.518518][ T31] nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.518543][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.518575][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.518595][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.518622][ T31] ? __kmalloc_noprof+0x38c/0x720 [ 286.518639][ T31] ? __nla_parse+0x40/0x60 [ 286.518662][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 286.518680][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 286.518704][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 286.518728][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 286.518755][ T31] ? bpf_lsm_capable+0x9/0x20 [ 286.518768][ T31] ? security_capable+0x7e/0x2c0 [ 286.518791][ T31] genl_rcv_msg+0x614/0x7a0 [ 286.518813][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.518830][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.518860][ T31] netlink_rcv_skb+0x226/0x4a0 [ 286.518884][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.518903][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 286.518937][ T31] ? down_read+0x2be/0x330 [ 286.518958][ T31] genl_rcv+0x28/0x40 [ 286.518974][ T31] netlink_unicast+0x7bd/0x940 [ 286.519002][ T31] netlink_sendmsg+0x813/0xb40 [ 286.519033][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.519062][ T31] ? apparmor_socket_sendmsg+0x98/0x360 [ 286.519078][ T31] ? rcu_is_watching+0x16/0xb0 [ 286.519098][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.519120][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 286.519147][ T31] ____sys_sendmsg+0x54e/0x850 [ 286.519172][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 286.519199][ T31] ? import_iovec+0x73/0xa0 [ 286.519221][ T31] ___sys_sendmsg+0x2a5/0x360 [ 286.519241][ T31] ? __lock_acquire+0x747/0x2de0 [ 286.519259][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 286.519321][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 286.519346][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.519372][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 286.519399][ T31] ? do_user_addr_fault+0xc4c/0x1340 [ 286.519422][ T31] do_syscall_64+0x166/0x520 [ 286.519438][ T31] ? trace_irq_disable+0x3b/0x140 [ 286.519454][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.519470][ T31] ? clear_bhb_loop+0x70/0xc0 [ 286.519489][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.519505][ T31] RIP: 0033:0x7fa991be06f9 [ 286.519517][ T31] RSP: 002b:00007ffc9d2276f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 286.519532][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa991be06f9 [ 286.519543][ T31] RDX: 0000000004000080 RSI: 0000200000000100 RDI: 0000000000000003 [ 286.519553][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 286.519563][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000018429 [ 286.519572][ T31] R13: 00007ffc9d22770c R14: 00007ffc9d227720 R15: 00007ffc9d227710 [ 286.519596][ T31] [ 286.519607][ T31] [ 286.519607][ T31] Showing all locks held in the system: [ 286.519618][ T31] locks held by khungtaskd/31: 1, last CPU#1: [ 286.519630][ T31] #0: ffffffff8ed5c8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.519690][ T31] locks held by kworker/u8:10/3349: 2, on CPU#1: [ 286.519702][ T31] #0: ffff88801b0ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 [ 286.519745][ T31] #1: ffffc9000f3a7c40 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630 [ 286.519791][ T31] locks held by getty/5376: 2, on CPU#1: [ 286.519802][ T31] #0: ffff8880366950a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.519848][ T31] #1: ffffc900032332e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 [ 286.519889][ T31] locks held by syz-executor523/5645: 2, on CPU#1: [ 286.519905][ T31] #0: ffffffff902c34e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 286.519943][ T31] #1: ffffffff8f09f500 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.519985][ T31] locks held by syz-executor523/5649: 2, on CPU#0: [ 286.519996][ T31] #0: ffffffff902c34e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 286.520038][ T31] #1: ffffffff8f09f500 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.520079][ T31] locks held by syz-executor523/5650: 2, on CPU#0: [ 286.520090][ T31] #0: ffffffff902c34e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 286.520127][ T31] #1: ffffffff8f09f500 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.520169][ T31] locks held by syz-executor523/5652: 2, on CPU#1: [ 286.520180][ T31] #0: ffffffff902c34e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 286.520217][ T31] #1: ffffffff8f09f500 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.520258][ T31] locks held by syz-executor523/5658: 2, on CPU#1: [ 286.520269][ T31] #0: ffffffff902c34e8 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 286.520310][ T31] #1: ffffffff8f09f500 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x53d/0x1ab0 [ 286.520351][ T31] [ 286.520356][ T31] ============================================= [ 286.520356][ T31] [ 286.520372][ T31] NMI backtrace for cpu 1 [ 286.520387][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 286.520404][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 286.520412][ T31] Call Trace: [ 286.520419][ T31] [ 286.520425][ T31] dump_stack_lvl+0xe8/0x150 [ 286.520448][ T31] nmi_cpu_backtrace+0x274/0x2d0 [ 286.520471][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.520498][ T31] nmi_trigger_cpumask_backtrace+0x17d/0x390 [ 286.520522][ T31] sys_info+0x135/0x170 [ 286.520542][ T31] watchdog+0xfd7/0x1030 [ 286.520563][ T31] ? watchdog+0x1c7/0x1030 [ 286.520583][ T31] kthread+0x38b/0x480 [ 286.520598][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.520612][ T31] ? __pfx_kthread+0x10/0x10 [ 286.520628][ T31] ret_from_fork+0x514/0xb70 [ 286.520645][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.520670][ T31] ? __switch_to+0xc89/0x1420 [ 286.520694][ T31] ? __pfx_kthread+0x10/0x10 [ 286.520709][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.520745][ T31] [ 286.520750][ T31] Sending NMI from CPU 1 to CPUs 0: [ 286.520822][ C0] NMI backtrace for cpu 0 [ 286.520837][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 286.520857][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 286.520868][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 286.520891][ C0] Code: 5c 8f 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 51 24 00 fb f4 8c 08 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 286.520906][ C0] RSP: 0018:ffffffff8ea07ca0 EFLAGS: 00000242 [ 286.520923][ C0] RAX: 00000000000d490b RBX: ffffffff819badbc RCX: 8000000000000001 [ 286.520937][ C0] RDX: 0000000000000001 RSI: ffffffff8e4776a5 RDI: ffffffff8c6d9c80 [ 286.520950][ C0] RBP: ffffffff8ea07d78 R08: ffff8880b8633a1b R09: 1ffff110170c6743 [ 286.520965][ C0] R10: dffffc0000000000 R11: ffffed10170c6744 R12: 0000000000000000 [ 286.520978][ C0] R13: 1ffffffff1d51df8 R14: 1ffffffff1d40f9c R15: dffffc0000000000 [ 286.520992][ C0] FS: 0000000000000000(0000) GS:ffff888124cd1000(0000) knlGS:0000000000000000 [ 286.521007][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.521021][ C0] CR2: 000055e946336a38 CR3: 0000000077ed6000 CR4: 00000000003526f0 [ 286.521039][ C0] Call Trace: [ 286.521046][ C0] [ 286.521052][ C0] default_idle+0x9/0x20 [ 286.521074][ C0] default_idle_call+0x72/0xb0 [ 286.521096][ C0] do_idle+0x1cc/0x540 [ 286.521127][ C0] ? __pfx_do_idle+0x10/0x10 [ 286.521160][ C0] cpu_startup_entry+0x43/0x60 [ 286.521177][ C0] rest_init+0x378/0x3a0 [ 286.521201][ C0] ? __pfx_rest_init+0x10/0x10 [ 286.521228][ C0] ? __pfx_kernel_init+0x10/0x10 [ 286.521253][ C0] ? __pfx_acpi_hw_get_mode+0x10/0x10 [ 286.521281][ C0] ? acpi_ut_status_exit+0x120/0x1f0 [ 286.521305][ C0] ? acpi_ut_status_exit+0x120/0x1f0 [ 286.521327][ C0] ? acpi_enable_subsystem+0x286/0x3c0 [ 286.521365][ C0] start_kernel+0x392/0x3e0 [ 286.521385][ C0] x86_64_start_reservations+0x24/0x30 [ 286.521410][ C0] x86_64_start_kernel+0x137/0x1b0 [ 286.521434][ C0] common_startup_64+0x13e/0x157 [ 286.521466][ C0] [ 286.522117][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 288.566796][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 288.576005][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.586072][ T31] Call Trace: [ 288.589387][ T31] [ 288.592364][ T31] vpanic+0x56d/0xa60 [ 288.596413][ T31] ? __pfx_vpanic+0x10/0x10 [ 288.601029][ T31] ? irqentry_exit+0x218/0x910 [ 288.605804][ T31] panic+0xc5/0xd0 [ 288.609656][ T31] ? __pfx_panic+0x10/0x10 [ 288.614103][ T31] watchdog+0x1030/0x1030 [ 288.618466][ T31] ? watchdog+0x1c7/0x1030 [ 288.622965][ T31] kthread+0x38b/0x480 [ 288.627046][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.631734][ T31] ? __pfx_kthread+0x10/0x10 [ 288.636357][ T31] ret_from_fork+0x514/0xb70 [ 288.640962][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.646092][ T31] ? __switch_to+0xc89/0x1420 [ 288.650790][ T31] ? __pfx_kthread+0x10/0x10 [ 288.655400][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.660205][ T31] [ 288.663903][ T31] Kernel Offset: disabled [ 288.668253][ T31] Rebooting in 86400 seconds..