ci-upstream-net-kasan-gce/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-net-kasan-gce/syz-executor4023176051 <...> Warning: Permanently added '10.128.1.106' (ED25519) to the list of known hosts. execve("ci-upstream-net-kasan-gce/syz-executor4023176051", ["ci-upstream-net-kasan-gce/syz-executor4023176051"], 0x7ffcb9e88f60 /* 10 vars */) = 0 brk(NULL) = 0x55556cb8c000 brk(0x55556cb8cd80) = 0x55556cb8cd80 arch_prctl(ARCH_SET_FS, 0x55556cb8c400) = 0 set_tid_address(0x55556cb8c6d0) = 5631 set_robust_list(0x55556cb8c6e0, 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-executor4023176051", 4096) = 54 getrandom("\x8e\x7b\x11\x92\x38\x2d\xf8\x60", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556cb8cd80 brk(0x55556cbadd80) = 0x55556cbadd80 brk(0x55556cbae000) = 0x55556cbae000 mprotect(0x7fea522f8000, 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|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5632 attached [pid 5632] set_robust_list(0x55556cb8c6e0, 24 [pid 5631] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5632 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5632] <... set_robust_list resumed>) = 0 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5632] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5632] rt_sigprocmask(SIG_BLOCK, ~[]ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5633 attached [pid 5633] set_robust_list(0x55556cb8c6e0, 24 [pid 5631] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5633 [pid 5632] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5633] <... set_robust_list resumed>) = 0 [pid 5632] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] rt_sigprocmask(SIG_SETMASK, []ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5634 attached [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] set_robust_list(0x55556cb8c6e0, 24 [pid 5632] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5634 [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] <... set_robust_list resumed>) = 0 [pid 5633] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5633] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5632] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5635 attached [pid 5634] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5633] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5632] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... prctl resumed>) = 0 [pid 5634] setpgid(0, 0ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5636 attached [pid 5631] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5635 [pid 5635] set_robust_list(0x55556cb8c6e0, 24 [pid 5634] <... setpgid resumed>) = 0 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] set_robust_list(0x55556cb8c6e0, 24 [pid 5635] <... set_robust_list resumed>) = 0 [pid 5634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5633] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5636 [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] <... set_robust_list resumed>) = 0 [pid 5635] rt_sigprocmask(SIG_SETMASK, [] [pid 5634] <... openat resumed>) = 3 [pid 5633] rt_sigprocmask(SIG_SETMASK, [] [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] rt_sigprocmask(SIG_SETMASK, [] [pid 5635] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5635] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] write(3, "1000", 4 [pid 5633] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5635] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5634] <... write resumed>) = 4 [pid 5636] <... prctl resumed>) = 0 [pid 5635] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5637 attached [pid 5636] setpgid(0, 0 [pid 5634] close(3 [pid 5637] set_robust_list(0x55556cb8c6e0, 24 [pid 5636] <... setpgid resumed>) = 0 [pid 5634] <... close resumed>) = 0 [pid 5637] <... set_robust_list resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5634] write(1, "executing program\n", 18ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5638 attached [pid 5631] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5637 [pid 5634] <... write resumed>) = 18 [pid 5631] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... openat resumed>) = 3 [pid 5634] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE [pid 5631] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5634] <... socket resumed>) = 3 executing program [pid 5631] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5634] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=40, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388453, nlmsg_pid=635427837}, "\x00\x00\x00\x00\x00\x00\x00\x00\x10\x08\x04\x00\x01\x00\x00\x00\x08\x00\x1b\x00\x00\x00\x00\x00"], iov_len=40}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_PROBE|MSG_DONTWAIT|MSG_EOR|MSG_ERRQUEUE|MSG_BATCH|MSG_ZEROCOPY|MSG_FASTOPEN}, MSG_ZEROCOPY [pid 5631] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] set_robust_list(0x55556cb8c6e0, 24 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5636] write(3, "1000", 4 [pid 5635] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5638 [pid 5638] <... set_robust_list resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5636] <... write resumed>) = 4 [pid 5636] close(3 [pid 5631] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5638] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] <... close resumed>) = 0 [pid 5635] rt_sigprocmask(SIG_SETMASK, []ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5639 attached [pid 5637] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5636] write(1, "executing program\n", 18 [pid 5635] <... rt_sigprocmask resumed>, NULL, 8) = 0 executing program [pid 5639] set_robust_list(0x55556cb8c6e0, 24 [pid 5638] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5637] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5636] <... write resumed>) = 18 [pid 5631] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5639 [pid 5631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5636] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTEci-upstream-net-kasan-gce/strace-static-x86_64: Process 5640 attached [pid 5639] <... set_robust_list resumed>) = 0 [pid 5638] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5637] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5640 [pid 5636] <... socket resumed>) = 3 [pid 5640] set_robust_list(0x55556cb8c6e0, 24 [pid 5639] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] <... prctl resumed>) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [] [pid 5636] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=40, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388453, nlmsg_pid=635427837}, "\x00\x00\x00\x00\x00\x00\x00\x00\x10\x08\x04\x00\x01\x00\x00\x00\x08\x00\x1b\x00\x00\x00\x00\x00"], iov_len=40}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_PROBE|MSG_DONTWAIT|MSG_EOR|MSG_ERRQUEUE|MSG_BATCH|MSG_ZEROCOPY|MSG_FASTOPEN}, MSG_ZEROCOPY [pid 5640] <... set_robust_list resumed>) = 0 [pid 5639] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] setpgid(0, 0 [pid 5637] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] rt_sigprocmask(SIG_BLOCK, ~[] [pid 5638] <... setpgid resumed>) = 0 [pid 5640] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5640] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5639] <... rt_sigprocmask resumed>, [], 8) = 0 [pid 5638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5639] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5640] <... prctl resumed>) = 0 [pid 5640] setpgid(0, 0) = 0 [pid 5640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5638] <... openat resumed>) = 3 ci-upstream-net-kasan-gce/strace-static-x86_64: Process 5642 attached [pid 5642] set_robust_list(0x55556cb8c6e0, 24 [pid 5640] <... openat resumed>) = 3 [pid 5642] <... set_robust_list resumed>) = 0 [pid 5638] write(3, "1000", 4 [pid 5642] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] <... clone resumed>, child_tidptr=0x55556cb8c6d0) = 5642 [pid 5642] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5638] <... write resumed>) = 4 [pid 5639] rt_sigprocmask(SIG_SETMASK, [] [pid 5638] close(3 [pid 5639] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5642] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5640] write(3, "1000", 4 [pid 5638] <... close resumed>) = 0 [pid 5642] <... prctl resumed>) = 0 [pid 5640] <... write resumed>) = 4 [pid 5642] setpgid(0, 0 [pid 5638] write(1, "executing program\n", 18 [pid 5642] <... setpgid resumed>) = 0 executing program [pid 5642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5640] close(3 [pid 5642] <... openat resumed>) = 3 [pid 5640] <... close resumed>) = 0 [pid 5638] <... write resumed>) = 18 [pid 5640] write(1, "executing program\n", 18 [pid 5638] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE [pid 5640] <... write resumed>) = 18 [pid 5638] <... socket resumed>) = 3 executing program [pid 5640] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE [pid 5642] write(3, "1000", 4 [pid 5640] <... socket resumed>) = 3 [pid 5638] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=40, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388453, nlmsg_pid=635427837}, "\x00\x00\x00\x00\x00\x00\x00\x00\x10\x08\x04\x00\x01\x00\x00\x00\x08\x00\x1b\x00\x00\x00\x00\x00"], iov_len=40}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_PROBE|MSG_DONTWAIT|MSG_EOR|MSG_ERRQUEUE|MSG_BATCH|MSG_ZEROCOPY|MSG_FASTOPEN}, MSG_ZEROCOPY [pid 5642] <... write resumed>) = 4 [pid 5640] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base=[{nlmsg_len=40, nlmsg_type=0x10 /* NLMSG_??? */, nlmsg_flags=NLM_F_REQUEST, nlmsg_seq=7388453, nlmsg_pid=635427837}, "\x00\x00\x00\x00\x00\x00\x00\x00\x10\x08\x04\x00\x01\x00\x00\x00\x08\x00\x1b\x00\x00\x00\x00\x00"], iov_len=40}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_PROBE|MSG_DONTWAIT|MSG_EOR|MSG_ERRQUEUE|MSG_BATCH|MSG_ZEROCOPY|MSG_FASTOPEN}, MSG_ZEROCOPY [pid 5642] close(3) = 0 [pid 5642] write(1, "executing program\n", 18) = 18 executing program [pid 5642] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 [ 91.992738][ T24] cfg80211: failed to load regulatory.db [ 286.550260][ T31] INFO: task syz-executor402:5636 blocked for more than 143 seconds. [ 286.558392][ T31] Not tainted syzkaller #0 [ 286.563366][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.572656][ T31] task:syz-executor402 state:D stack:25904 pid:5636 tgid:5636 ppid:5633 task_flags:0x400140 flags:0x00080002 [ 286.584670][ T31] Call Trace: [ 286.587970][ T31] [ 286.590937][ T31] __schedule+0x17d9/0x56c0 [ 286.595476][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.600458][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.605429][ T31] ? __pfx___schedule+0x10/0x10 [ 286.610329][ T31] ? schedule+0x90/0x2b0 [ 286.614581][ T31] schedule+0x164/0x2b0 [ 286.618723][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.624208][ T31] __mutex_lock+0x7bf/0x1550 [ 286.628814][ T31] ? __mutex_lock+0x5d4/0x1550 [ 286.633623][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 286.639526][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 286.644591][ T31] ? __asan_memset+0x22/0x50 [ 286.649191][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 286.654812][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 286.660599][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 286.666339][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.671139][ T31] ? trace_kmalloc+0x2a/0xf0 [ 286.675764][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.681978][ T31] ? __nla_parse+0x40/0x60 [ 286.686453][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 286.692850][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 286.699198][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 286.704810][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 286.711037][ T31] ? bpf_lsm_capable+0x9/0x20 [ 286.715723][ T31] ? security_capable+0x7e/0x2c0 [ 286.720814][ T31] genl_rcv_msg+0x614/0x7a0 [ 286.725326][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.730390][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 286.736556][ T31] netlink_rcv_skb+0x226/0x4a0 [ 286.741362][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 286.746391][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 286.751730][ T31] ? down_read+0x2be/0x330 [ 286.756158][ T31] genl_rcv+0x28/0x40 [ 286.760173][ T31] netlink_unicast+0x7bb/0x940 [ 286.764972][ T31] netlink_sendmsg+0x813/0xb40 [ 286.769764][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.775167][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 286.780299][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 286.785243][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 286.790593][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 286.795653][ T31] ____sys_sendmsg+0x54e/0x850 [ 286.800464][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 286.805776][ T31] ? import_iovec+0x73/0xa0 [ 286.810810][ T31] ___sys_sendmsg+0x2a5/0x360 [ 286.815616][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.820764][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 286.825995][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 286.831304][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 286.836601][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.841853][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 286.847595][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 286.853063][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.859139][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.865339][ T31] do_syscall_64+0x174/0x580 [ 286.869995][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.876119][ T31] ? clear_bhb_loop+0x40/0x90 [ 286.880922][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.886845][ T31] RIP: 0033:0x7fea522656b9 [ 286.891300][ T31] RSP: 002b:00007ffe5a552e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 286.899748][ T31] RAX: ffffffffffffffda RBX: 00002000000023c0 RCX: 00007fea522656b9 [ 286.907856][ T31] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 [ 286.915906][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 286.923930][ T31] R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffe5a552fa8 [ 286.931950][ T31] R13: 0000000000000002 R14: 00007ffe5a552e50 R15: 00007ffe5a552e40 [ 286.940041][ T31] [ 286.943083][ T31] INFO: task syz-executor402:5638 blocked for more than 143 seconds. [ 286.951186][ T31] Not tainted syzkaller #0 [ 286.956122][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.964845][ T31] task:syz-executor402 state:D stack:26752 pid:5638 tgid:5638 ppid:5635 task_flags:0x400140 flags:0x00080002 [ 286.976830][ T31] Call Trace: [ 286.980156][ T31] [ 286.983171][ T31] __schedule+0x17d9/0x56c0 [ 286.987915][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.992935][ T31] ? __lock_acquire+0x683/0x2cf0 [ 286.997896][ T31] ? __pfx___schedule+0x10/0x10 [ 287.002797][ T31] ? schedule+0x90/0x2b0 [ 287.007053][ T31] schedule+0x164/0x2b0 [ 287.011255][ T31] schedule_preempt_disabled+0x13/0x30 [ 287.016722][ T31] __mutex_lock+0x7bf/0x1550 [ 287.021358][ T31] ? __mutex_lock+0x5d4/0x1550 [ 287.026135][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.032080][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 287.037115][ T31] ? __asan_memset+0x22/0x50 [ 287.041741][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 287.047311][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.053084][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 287.058825][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.063625][ T31] ? trace_kmalloc+0x2a/0xf0 [ 287.068230][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.074449][ T31] ? __nla_parse+0x40/0x60 [ 287.078880][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 287.085279][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 287.091664][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 287.097231][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 287.103653][ T31] ? bpf_lsm_capable+0x9/0x20 [ 287.108344][ T31] ? security_capable+0x7e/0x2c0 [ 287.113417][ T31] genl_rcv_msg+0x614/0x7a0 [ 287.117960][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.123017][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.129198][ T31] netlink_rcv_skb+0x226/0x4a0 [ 287.134005][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.139048][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 287.144386][ T31] ? down_read+0x2be/0x330 [ 287.148814][ T31] genl_rcv+0x28/0x40 [ 287.152838][ T31] netlink_unicast+0x7bb/0x940 [ 287.157618][ T31] netlink_sendmsg+0x813/0xb40 [ 287.162466][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.167819][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 287.172908][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 287.177879][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.183213][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 287.188274][ T31] ____sys_sendmsg+0x54e/0x850 [ 287.193096][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 287.198434][ T31] ? import_iovec+0x73/0xa0 [ 287.202986][ T31] ___sys_sendmsg+0x2a5/0x360 [ 287.207669][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.212700][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 287.217938][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 287.223247][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 287.228241][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.233519][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 287.239018][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 287.244365][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.250583][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.256747][ T31] do_syscall_64+0x174/0x580 [ 287.261374][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.267448][ T31] ? clear_bhb_loop+0x40/0x90 [ 287.272194][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.278112][ T31] RIP: 0033:0x7fea522656b9 [ 287.282569][ T31] RSP: 002b:00007ffe5a552e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 287.291078][ T31] RAX: ffffffffffffffda RBX: 00002000000023c0 RCX: 00007fea522656b9 [ 287.299042][ T31] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 [ 287.307045][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 287.315055][ T31] R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffe5a552fa8 [ 287.323103][ T31] R13: 0000000000000002 R14: 00007ffe5a552e50 R15: 00007ffe5a552e40 [ 287.331149][ T31] [ 287.334190][ T31] INFO: task syz-executor402:5640 blocked for more than 144 seconds. [ 287.342425][ T31] Not tainted syzkaller #0 [ 287.347363][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.356158][ T31] task:syz-executor402 state:D stack:26744 pid:5640 tgid:5640 ppid:5637 task_flags:0x400140 flags:0x00080002 [ 287.368235][ T31] Call Trace: [ 287.371551][ T31] [ 287.374484][ T31] __schedule+0x17d9/0x56c0 [ 287.378974][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.383964][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.388917][ T31] ? ktime_get+0x45/0x220 [ 287.393377][ T31] ? __pfx___schedule+0x10/0x10 [ 287.398265][ T31] ? schedule+0x90/0x2b0 [ 287.402609][ T31] schedule+0x164/0x2b0 [ 287.406786][ T31] schedule_preempt_disabled+0x13/0x30 [ 287.412368][ T31] __mutex_lock+0x7bf/0x1550 [ 287.417035][ T31] ? __mutex_lock+0x5d4/0x1550 [ 287.421839][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.427843][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 287.432992][ T31] ? __nla_validate_parse+0x2389/0x2d50 [ 287.438561][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 287.444198][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.449981][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 287.455818][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.460769][ T31] ? trace_kmalloc+0x2a/0xf0 [ 287.465375][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.471591][ T31] ? __nla_parse+0x40/0x60 [ 287.476063][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 287.482444][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 287.488785][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 287.494421][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 287.500568][ T31] ? bpf_lsm_capable+0x9/0x20 [ 287.505263][ T31] ? security_capable+0x7e/0x2c0 [ 287.510255][ T31] genl_rcv_msg+0x614/0x7a0 [ 287.514785][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.519799][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.526008][ T31] netlink_rcv_skb+0x226/0x4a0 [ 287.530814][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.535825][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 287.541170][ T31] ? down_read+0x2be/0x330 [ 287.545613][ T31] genl_rcv+0x28/0x40 [ 287.549588][ T31] netlink_unicast+0x7bb/0x940 [ 287.554421][ T31] netlink_sendmsg+0x813/0xb40 [ 287.559204][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.564547][ T31] ? do_raw_spin_lock+0x12b/0x2f0 [ 287.569586][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 287.574596][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.579995][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 287.585050][ T31] ____sys_sendmsg+0x54e/0x850 [ 287.589804][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 287.595165][ T31] ? import_iovec+0x73/0xa0 [ 287.599687][ T31] ___sys_sendmsg+0x2a5/0x360 [ 287.604523][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.609496][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 287.614794][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 287.620190][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 287.625135][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.630397][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 287.635870][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 287.641203][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.647273][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.653414][ T31] do_syscall_64+0x174/0x580 [ 287.658018][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.664122][ T31] ? clear_bhb_loop+0x40/0x90 [ 287.668807][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.674739][ T31] RIP: 0033:0x7fea522656b9 [ 287.679162][ T31] RSP: 002b:00007ffe5a552e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 287.687621][ T31] RAX: ffffffffffffffda RBX: 00002000000023c0 RCX: 00007fea522656b9 [ 287.695666][ T31] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 [ 287.703666][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 287.711681][ T31] R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffe5a552fa8 [ 287.719646][ T31] R13: 0000000000000002 R14: 00007ffe5a552e50 R15: 00007ffe5a552e40 [ 287.727713][ T31] [ 287.730773][ T31] INFO: task syz-executor402:5642 blocked for more than 144 seconds. [ 287.738843][ T31] Not tainted syzkaller #0 [ 287.743838][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.752563][ T31] task:syz-executor402 state:D stack:26752 pid:5642 tgid:5642 ppid:5639 task_flags:0x400140 flags:0x00080002 [ 287.764543][ T31] Call Trace: [ 287.767838][ T31] [ 287.770808][ T31] __schedule+0x17d9/0x56c0 [ 287.775323][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.780311][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.785267][ T31] ? __pfx___schedule+0x10/0x10 [ 287.790160][ T31] ? schedule+0x90/0x2b0 [ 287.794412][ T31] schedule+0x164/0x2b0 [ 287.798562][ T31] schedule_preempt_disabled+0x13/0x30 [ 287.804068][ T31] __mutex_lock+0x7bf/0x1550 [ 287.808690][ T31] ? __mutex_lock+0x5d4/0x1550 [ 287.813509][ T31] ? nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.819412][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 287.824484][ T31] ? __asan_memset+0x22/0x50 [ 287.829084][ T31] ? __nla_validate_parse+0x2429/0x2d50 [ 287.834699][ T31] nfsd_nl_listener_set_doit+0x135/0x1750 [ 287.840465][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 287.846199][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.851061][ T31] ? trace_kmalloc+0x2a/0xf0 [ 287.855756][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.861970][ T31] ? __nla_parse+0x40/0x60 [ 287.866469][ T31] ? genl_family_rcv_msg_attrs_parse+0x20b/0x2f0 [ 287.872891][ T31] ? genl_family_rcv_msg_attrs_parse+0x265/0x2f0 [ 287.879234][ T31] genl_family_rcv_msg_doit+0x233/0x340 [ 287.884833][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 287.890983][ T31] ? bpf_lsm_capable+0x9/0x20 [ 287.895680][ T31] ? security_capable+0x7e/0x2c0 [ 287.900788][ T31] genl_rcv_msg+0x614/0x7a0 [ 287.905332][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.910413][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 287.916586][ T31] netlink_rcv_skb+0x226/0x4a0 [ 287.921458][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 287.926506][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 287.931844][ T31] ? down_read+0x2be/0x330 [ 287.936307][ T31] genl_rcv+0x28/0x40 [ 287.940332][ T31] netlink_unicast+0x7bb/0x940 [ 287.945110][ T31] netlink_sendmsg+0x813/0xb40 [ 287.949866][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.955232][ T31] ? aa_sock_msg_perm+0xf1/0x1b0 [ 287.960231][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 287.965560][ T31] sock_sendmsg_nosec+0x13a/0x180 [ 287.970665][ T31] ____sys_sendmsg+0x54e/0x850 [ 287.975442][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 287.980818][ T31] ? import_iovec+0x73/0xa0 [ 287.985343][ T31] ___sys_sendmsg+0x2a5/0x360 [ 287.990087][ T31] ? __lock_acquire+0x683/0x2cf0 [ 287.995035][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 288.000275][ T31] ? lockdep_hardirqs_on+0x7a/0x110 [ 288.005534][ T31] __x64_sys_sendmsg+0x1b1/0x290 [ 288.010508][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 288.015718][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 288.021228][ T31] ? do_user_addr_fault+0xc4a/0x1340 [ 288.026527][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 288.032629][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 288.038699][ T31] do_syscall_64+0x174/0x580 [ 288.043321][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 288.049410][ T31] ? clear_bhb_loop+0x40/0x90 [ 288.054138][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 288.060094][ T31] RIP: 0033:0x7fea522656b9 [ 288.064526][ T31] RSP: 002b:00007ffe5a552e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 288.072985][ T31] RAX: ffffffffffffffda RBX: 00002000000023c0 RCX: 00007fea522656b9 [ 288.081001][ T31] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004 [ 288.088958][ T31] RBP: 00000000000f4240 R08: 0000000000000009 R09: 0000000000000009 [ 288.096971][ T31] R10: 0000000000000009 R11: 0000000000000246 R12: 00007ffe5a552fa8 [ 288.104993][ T31] R13: 0000000000000002 R14: 00007ffe5a552e50 R15: 00007ffe5a552e40 [ 288.113055][ T31] [ 288.116091][ T31] [ 288.116091][ T31] Showing all locks held in the system: [ 288.123858][ T31] 1 lock held by khungtaskd/31: [ 288.128708][ T31] #0: ffffffff8eb59c60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 288.138615][ T31] 2 locks held by getty/5378: [ 288.143344][ T31] #0: ffff8880368660a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 288.153167][ T31] #1: ffffc9000322b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360 [ 288.163328][ T31] 2 locks held by syz-executor402/5634: [ 288.168861][ T31] #0: ffffffff9009eb68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.177076][ T31] #1: ffffffff8ee8e620 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.187326][ T31] 2 locks held by syz-executor402/5636: [ 288.192925][ T31] #0: ffffffff9009eb68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.201188][ T31] #1: ffffffff8ee8e620 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.211406][ T31] 2 locks held by syz-executor402/5638: [ 288.216947][ T31] #0: ffffffff9009eb68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.225173][ T31] #1: ffffffff8ee8e620 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.235415][ T31] 2 locks held by syz-executor402/5640: [ 288.241006][ T31] #0: ffffffff9009eb68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.249214][ T31] #1: ffffffff8ee8e620 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.259463][ T31] 2 locks held by syz-executor402/5642: [ 288.265059][ T31] #0: ffffffff9009eb68 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 288.273298][ T31] #1: ffffffff8ee8e620 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x135/0x1750 [ 288.283516][ T31] [ 288.285840][ T31] ============================================= [ 288.285840][ T31] [ 288.294323][ T31] NMI backtrace for cpu 1 [ 288.294358][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 288.294376][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.294385][ T31] Call Trace: [ 288.294390][ T31] [ 288.294397][ T31] dump_stack_lvl+0xe8/0x150 [ 288.294423][ T31] nmi_cpu_backtrace+0x274/0x2d0 [ 288.294445][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 288.294470][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x380 [ 288.294492][ T31] sys_info+0x135/0x170 [ 288.294508][ T31] watchdog+0xfd7/0x1030 [ 288.294536][ T31] ? watchdog+0x1c7/0x1030 [ 288.294559][ T31] kthread+0x388/0x470 [ 288.294584][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.294604][ T31] ? __pfx_kthread+0x10/0x10 [ 288.294630][ T31] ret_from_fork+0x514/0xb70 [ 288.294659][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.294684][ T31] ? __switch_to+0xc89/0x1420 [ 288.294710][ T31] ? __pfx_kthread+0x10/0x10 [ 288.294736][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.294767][ T31] [ 288.294774][ T31] Sending NMI from CPU 1 to CPUs 0: [ 288.403898][ C0] NMI backtrace for cpu 0 [ 288.403923][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 288.403942][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.403968][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 288.404003][ C0] Code: dc 7d 02 e9 93 06 03 00 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 d3 4e 17 00 fb f4 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 288.404017][ C0] RSP: 0018:ffffffff8e807de0 EFLAGS: 00000242 [ 288.404032][ C0] RAX: 00000000000d0373 RBX: ffffffff819b533c RCX: 0000000080000001 [ 288.404044][ C0] RDX: 0000000000000001 RSI: ffffffff8e231215 RDI: ffffffff8c4bdd80 [ 288.404056][ C0] RBP: ffffffff8e807eb8 R08: ffff8880b86338db R09: 1ffff110170c671b [ 288.404072][ C0] R10: dffffc0000000000 R11: ffffed10170c671c R12: 0000000000000000 [ 288.404084][ C0] R13: 1ffffffff1d11de8 R14: 1ffffffff1d00fc4 R15: dffffc0000000000 [ 288.404101][ C0] FS: 0000000000000000(0000) GS:ffff888124f4f000(0000) knlGS:0000000000000000 [ 288.404114][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 288.404126][ C0] CR2: 000056140d478340 CR3: 000000000e946000 CR4: 00000000003526f0 [ 288.404141][ C0] Call Trace: [ 288.404149][ C0] [ 288.404155][ C0] default_idle+0x9/0x20 [ 288.404185][ C0] default_idle_call+0x72/0xb0 [ 288.404201][ C0] do_idle+0x1cc/0x540 [ 288.404226][ C0] ? __pfx_do_idle+0x10/0x10 [ 288.404252][ C0] cpu_startup_entry+0x43/0x60 [ 288.404274][ C0] rest_init+0x2de/0x300 [ 288.404292][ C0] start_kernel+0x392/0x3e0 [ 288.404326][ C0] x86_64_start_reservations+0x24/0x30 [ 288.404352][ C0] x86_64_start_kernel+0x137/0x1b0 [ 288.404378][ C0] common_startup_64+0x13e/0x157 [ 288.404426][ C0] [ 288.404891][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 288.404905][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) [ 288.404925][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 288.404936][ T31] Call Trace: [ 288.404943][ T31] [ 288.404951][ T31] vpanic+0x56c/0xa60 [ 288.404984][ T31] ? __pfx_vpanic+0x10/0x10 [ 288.405012][ T31] ? __down_trylock_console_sem+0x6b/0x110 [ 288.405038][ T31] panic+0xc5/0xd0 [ 288.405064][ T31] ? __pfx_panic+0x10/0x10 [ 288.405093][ T31] ? wq_watchdog_touch+0xf9/0x160 [ 288.405116][ T31] ? nmi_trigger_cpumask_backtrace+0x247/0x380 [ 288.405141][ T31] watchdog+0x1030/0x1030 [ 288.405171][ T31] ? watchdog+0x1c7/0x1030 [ 288.405200][ T31] kthread+0x388/0x470 [ 288.405226][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.405246][ T31] ? __pfx_kthread+0x10/0x10 [ 288.405273][ T31] ret_from_fork+0x514/0xb70 [ 288.405303][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.405328][ T31] ? __switch_to+0xc89/0x1420 [ 288.405354][ T31] ? __pfx_kthread+0x10/0x10 [ 288.405381][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.405412][ T31] [ 288.691788][ T31] Kernel Offset: disabled [ 288.696106][ T31] Rebooting in 86400 seconds..