./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor231863086 <...> Warning: Permanently added '10.128.1.200' (ED25519) to the list of known hosts. execve("./syz-executor231863086", ["./syz-executor231863086"], 0x7ffcfb22bc50 /* 10 vars */) = 0 brk(NULL) = 0x5555921be000 brk(0x5555921bed00) = 0x5555921bed00 arch_prctl(ARCH_SET_FS, 0x5555921be380) = 0 set_tid_address(0x5555921be650) = 5871 set_robust_list(0x5555921be660, 24) = 0 rseq(0x5555921beca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor231863086", 4096) = 27 getrandom("\x5b\xd7\x50\xef\x43\xad\x35\xff", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555921bed00 brk(0x5555921dfd00) = 0x5555921dfd00 brk(0x5555921e0000) = 0x5555921e0000 mprotect(0x7fa445d97000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5872 attached , child_tidptr=0x5555921be650) = 5872 [pid 5872] set_robust_list(0x5555921be660, 24) = 0 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5872] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5873 attached [pid 5871] <... clone resumed>, child_tidptr=0x5555921be650) = 5873 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5874 attached [pid 5873] set_robust_list(0x5555921be660, 24) = 0 [pid 5874] set_robust_list(0x5555921be660, 24 [pid 5873] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5872] <... clone resumed>, child_tidptr=0x5555921be650) = 5874 ./strace-static-x86_64: Process 5875 attached [pid 5874] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 5876 attached [pid 5874] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5871] <... clone resumed>, child_tidptr=0x5555921be650) = 5875 [pid 5871] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5876] set_robust_list(0x5555921be660, 24 [pid 5875] set_robust_list(0x5555921be660, 24 [pid 5874] <... prctl resumed>) = 0 [pid 5873] <... clone resumed>, child_tidptr=0x5555921be650) = 5876 [pid 5876] <... set_robust_list resumed>) = 0 [pid 5874] setpgid(0, 0 [pid 5876] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5877 attached ) = 0 [pid 5875] <... set_robust_list resumed>) = 0 [pid 5874] <... setpgid resumed>) = 0 [pid 5871] <... clone resumed>, child_tidptr=0x5555921be650) = 5877 [pid 5877] set_robust_list(0x5555921be660, 24 [pid 5876] setpgid(0, 0 [pid 5875] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5877] <... set_robust_list resumed>) = 0 [pid 5876] <... setpgid resumed>) = 0 [pid 5877] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5878 attached [pid 5874] <... openat resumed>) = 3 [pid 5876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5878] set_robust_list(0x5555921be660, 24./strace-static-x86_64: Process 5879 attached ) = 0 [pid 5877] <... clone resumed>, child_tidptr=0x5555921be650) = 5879 [pid 5876] <... openat resumed>) = 3 [pid 5875] <... clone resumed>, child_tidptr=0x5555921be650) = 5878 [pid 5874] write(3, "1000", 4 [pid 5879] set_robust_list(0x5555921be660, 24 [pid 5878] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5876] write(3, "1000", 4 [pid 5874] <... write resumed>) = 4 [pid 5879] <... set_robust_list resumed>) = 0 [pid 5876] <... write resumed>) = 4 [pid 5874] close(3 [pid 5876] close(3 [pid 5879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5878] <... prctl resumed>) = 0 [pid 5876] <... close resumed>) = 0 [pid 5874] <... close resumed>) = 0 [pid 5879] <... prctl resumed>) = 0 [pid 5878] setpgid(0, 0executing program executing program [pid 5876] write(1, "executing program\n", 18 [pid 5874] write(1, "executing program\n", 18 [pid 5879] setpgid(0, 0 [pid 5878] <... setpgid resumed>) = 0 [pid 5876] <... write resumed>) = 18 [pid 5874] <... write resumed>) = 18 [pid 5879] <... setpgid resumed>) = 0 [pid 5878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5876] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5874] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5878] <... openat resumed>) = 3 [pid 5874] <... socket resumed>) = 3 [pid 5876] <... socket resumed>) = 3 [pid 5879] <... openat resumed>) = 3 [pid 5878] write(3, "1000", 4 [pid 5876] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x25\x00\x01\x00\x2c\xbd\x70\x00\xfb\xdb\xdf\x25\x06\x00\x00\x00", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_EOR}, MSG_PROBE [pid 5879] write(3, "1000", 4 [pid 5878] <... write resumed>) = 4 [pid 5874] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x25\x00\x01\x00\x2c\xbd\x70\x00\xfb\xdb\xdf\x25\x06\x00\x00\x00", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_EOR}, MSG_PROBE [pid 5879] <... write resumed>) = 4 [pid 5878] close(3 [pid 5879] close(3 [pid 5878] <... close resumed>) = 0 [pid 5879] <... close resumed>) = 0 executing program executing program [pid 5878] write(1, "executing program\n", 18 [pid 5879] write(1, "executing program\n", 18 [pid 5878] <... write resumed>) = 18 [pid 5879] <... write resumed>) = 18 [pid 5878] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC [pid 5879] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 5878] <... socket resumed>) = 3 [pid 5879] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x25\x00\x01\x00\x2c\xbd\x70\x00\xfb\xdb\xdf\x25\x06\x00\x00\x00", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_EOR}, MSG_PROBE [pid 5878] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x25\x00\x01\x00\x2c\xbd\x70\x00\xfb\xdb\xdf\x25\x06\x00\x00\x00", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_EOR}, MSG_PROBE [pid 5876] <... sendmsg resumed>) = 20 [pid 5876] socket(AF_NETLINK, SOCK_DGRAM, 0) = 4 [pid 5876] write(4, "\xfc\x00\x00\x00\x1c\x00\x07\x04\xab\x5b\x25\x09\xb8\x68\x03\x00\x02\xab\x08\x7a\x01\x00\x00\x00\x01\x48\x10\x93\x21\x00\x01\xc0\xf0\x03\x05\x84\x05\x00\x60\x10\x00\x00\x00\x00\x00\x03\x98\x15\xfa\x2c\x53\xc2\x86\x48\x00\x00\x00\xb9\xd9\x56\x62\x53\x7a\x00\xbc\x00\x0c\x00\xf0\xff\x7f\x00\x00\xb4\x00\x60\x00\x33\xd4\x40\x00\x04\x05\x60\x91\x6a\x00\x33\xf4\x36\x31\x30\x12\xda\xfd\x5a\x32\xe2\x73\xfc"..., 252) = 252 [pid 5876] exit_group(0) = ? [pid 5876] +++ exited with 0 +++ [pid 5873] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5876, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- [pid 5873] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5873] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555921be650) = 5884 ./strace-static-x86_64: Process 5884 attached [pid 5884] set_robust_list(0x5555921be660, 24) = 0 [pid 5884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5884] setpgid(0, 0) = 0 [pid 5884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5884] write(3, "1000", 4) = 4 [ 161.782613][ T5876] netlink: 'syz-executor231': attribute type 12 has an invalid length. [pid 5884] close(3) = 0 [pid 5884] write(1, "executing program\n", 18executing program ) = 18 [pid 5884] socket(AF_NETLINK, SOCK_RAW, NETLINK_GENERIC) = 3 [pid 5884] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x14\x00\x00\x00\x25\x00\x01\x00\x2c\xbd\x70\x00\xfb\xdb\xdf\x25\x06\x00\x00\x00", iov_len=20}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_OOB|MSG_EOR}, MSG_PROBE [pid 5872] kill(-5874, SIGKILL) = 0 [pid 5872] kill(5874, SIGKILL) = 0 [pid 5875] kill(-5878, SIGKILL) = 0 [pid 5875] kill(5878, SIGKILL) = 0 [pid 5877] kill(-5879, SIGKILL) = 0 [pid 5877] kill(5879, SIGKILL) = 0 [pid 5873] kill(-5884, SIGKILL) = 0 [pid 5873] kill(5884, SIGKILL) = 0 [pid 5877] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5877] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5877] getdents64(3, 0x5555921bf6f0 /* 2 entries */, 32768) = 48 [pid 5877] getdents64(3, 0x5555921bf6f0 /* 0 entries */, 32768) = 0 [pid 5877] close(3) = 0 [pid 5875] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5872] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5875] <... openat resumed>) = 3 [pid 5875] newfstatat(3, "", [pid 5872] newfstatat(3, "", [pid 5875] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5872] <... newfstatat resumed>{st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5875] getdents64(3, 0x5555921bf6f0 /* 2 entries */, 32768) = 48 [pid 5872] getdents64(3, 0x5555921bf6f0 /* 2 entries */, 32768) = 48 [pid 5875] getdents64(3, 0x5555921bf6f0 /* 0 entries */, 32768) = 0 [pid 5872] getdents64(3, [pid 5875] close(3 [pid 5872] <... getdents64 resumed>0x5555921bf6f0 /* 0 entries */, 32768) = 0 [pid 5875] <... close resumed>) = 0 [pid 5872] close(3) = 0 [pid 5873] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5873] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5873] getdents64(3, 0x5555921bf6f0 /* 2 entries */, 32768) = 48 [pid 5873] getdents64(3, 0x5555921bf6f0 /* 0 entries */, 32768) = 0 [pid 5873] close(3) = 0 [ 180.000037][ T1099] sched: DL replenish lagged too much [ 429.999721][ T31] INFO: task syz-executor231:5878 blocked for more than 143 seconds. [ 430.007970][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 430.015381][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.024294][ T31] task:syz-executor231 state:D stack:27144 pid:5878 tgid:5878 ppid:5875 task_flags:0x400140 flags:0x00004006 [ 430.036412][ T31] Call Trace: [ 430.039883][ T31] [ 430.042879][ T31] __schedule+0x1737/0x4d30 [ 430.047456][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.052378][ T31] ? schedule+0x165/0x360 [ 430.056735][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.061732][ T31] ? __pfx___schedule+0x10/0x10 [ 430.066617][ T31] ? schedule+0x91/0x360 [ 430.070915][ T31] schedule+0x165/0x360 [ 430.075180][ T31] schedule_preempt_disabled+0x13/0x30 [ 430.080793][ T31] __mutex_lock+0x7e6/0x1360 [ 430.085410][ T31] ? __mutex_lock+0x5b6/0x1360 [ 430.090274][ T31] ? nfsd_nl_listener_set_doit+0x137/0x1690 [ 430.096452][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 430.102044][ T31] ? __asan_memset+0x22/0x50 [ 430.106659][ T31] ? ____sys_sendmsg+0x505/0x830 [ 430.111676][ T31] ? ___sys_sendmsg+0x21f/0x2a0 [ 430.116626][ T31] ? __x64_sys_sendmsg+0x19b/0x260 [ 430.121873][ T31] nfsd_nl_listener_set_doit+0x137/0x1690 [ 430.127630][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 430.133987][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 430.140363][ T31] ? __nla_parse+0x40/0x60 [ 430.144826][ T31] ? genl_family_rcv_msg_attrs_parse+0x1c9/0x2a0 [ 430.151245][ T31] genl_family_rcv_msg_doit+0x212/0x300 [ 430.156831][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 430.163420][ T31] ? bpf_lsm_capable+0x9/0x20 [ 430.168204][ T31] ? security_capable+0x7e/0x2e0 [ 430.173221][ T31] genl_rcv_msg+0x60e/0x790 [ 430.177768][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 430.182852][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 430.189118][ T31] netlink_rcv_skb+0x205/0x470 [ 430.194031][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 430.199081][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 430.204463][ T31] ? down_read+0x1ad/0x2e0 [ 430.209091][ T31] genl_rcv+0x28/0x40 [ 430.213125][ T31] netlink_unicast+0x759/0x8e0 [ 430.218091][ T31] netlink_sendmsg+0x805/0xb30 [ 430.223049][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 430.228394][ T31] ? aa_sock_msg_perm+0xf1/0x1d0 [ 430.233455][ T31] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 430.238795][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 430.244204][ T31] __sock_sendmsg+0x219/0x270 [ 430.248912][ T31] ____sys_sendmsg+0x505/0x830 [ 430.253745][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 430.259057][ T31] ? import_iovec+0x74/0xa0 [ 430.263676][ T31] ___sys_sendmsg+0x21f/0x2a0 [ 430.268388][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 430.273698][ T31] ? do_raw_spin_lock+0x121/0x290 [ 430.278898][ T31] __x64_sys_sendmsg+0x19b/0x260 [ 430.284016][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 430.289239][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 430.294881][ T31] do_syscall_64+0xfa/0x3b0 [ 430.299479][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.304681][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.310788][ T31] ? clear_bhb_loop+0x60/0xb0 [ 430.315570][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.321622][ T31] RIP: 0033:0x7fa445d24ba9 [ 430.326052][ T31] RSP: 002b:00007ffe8a9af748 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 430.334550][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa445d24ba9 [ 430.342672][ T31] RDX: 0000000000000010 RSI: 0000200000001540 RDI: 0000000000000003 [ 430.350779][ T31] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 430.358934][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 430.367329][ T31] R13: 00007ffe8a9af968 R14: 00007ffe8a9af770 R15: 00007ffe8a9af760 [ 430.375578][ T31] [ 430.378731][ T31] INFO: task syz-executor231:5879 blocked for more than 143 seconds. [ 430.386956][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 430.394159][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.403006][ T31] task:syz-executor231 state:D stack:25448 pid:5879 tgid:5879 ppid:5877 task_flags:0x400140 flags:0x00004006 [ 430.415276][ T31] Call Trace: [ 430.418632][ T31] [ 430.421690][ T31] __schedule+0x1737/0x4d30 [ 430.426501][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.431452][ T31] ? schedule+0x165/0x360 [ 430.435908][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.440950][ T31] ? __pfx___schedule+0x10/0x10 [ 430.445845][ T31] ? schedule+0x91/0x360 [ 430.450500][ T31] schedule+0x165/0x360 [ 430.454677][ T31] schedule_preempt_disabled+0x13/0x30 [ 430.460301][ T31] __mutex_lock+0x7e6/0x1360 [ 430.464916][ T31] ? __mutex_lock+0x5b6/0x1360 [ 430.469848][ T31] ? nfsd_nl_listener_set_doit+0x137/0x1690 [ 430.475872][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 430.481037][ T31] ? __asan_memset+0x22/0x50 [ 430.485658][ T31] ? ____sys_sendmsg+0x505/0x830 [ 430.490694][ T31] ? ___sys_sendmsg+0x21f/0x2a0 [ 430.495561][ T31] ? __x64_sys_sendmsg+0x19b/0x260 [ 430.500798][ T31] nfsd_nl_listener_set_doit+0x137/0x1690 [ 430.506581][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 430.512492][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 430.518704][ T31] ? __nla_parse+0x40/0x60 [ 430.523382][ T31] ? genl_family_rcv_msg_attrs_parse+0x1c9/0x2a0 [ 430.529799][ T31] genl_family_rcv_msg_doit+0x212/0x300 [ 430.535389][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 430.541683][ T31] ? bpf_lsm_capable+0x9/0x20 [ 430.546390][ T31] ? security_capable+0x7e/0x2e0 [ 430.551598][ T31] genl_rcv_msg+0x60e/0x790 [ 430.556141][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 430.561245][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 430.567465][ T31] netlink_rcv_skb+0x205/0x470 [ 430.572348][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 430.577517][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 430.582915][ T31] ? down_read+0x1ad/0x2e0 [ 430.587350][ T31] genl_rcv+0x28/0x40 [ 430.591380][ T31] netlink_unicast+0x759/0x8e0 [ 430.596166][ T31] netlink_sendmsg+0x805/0xb30 [ 430.601009][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 430.606328][ T31] ? aa_sock_msg_perm+0xf1/0x1d0 [ 430.611331][ T31] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 430.616727][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 430.622185][ T31] __sock_sendmsg+0x219/0x270 [ 430.626975][ T31] ____sys_sendmsg+0x505/0x830 [ 430.631800][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 430.637107][ T31] ? import_iovec+0x74/0xa0 [ 430.641758][ T31] ___sys_sendmsg+0x21f/0x2a0 [ 430.646566][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 430.651882][ T31] ? do_raw_spin_lock+0x121/0x290 [ 430.656987][ T31] __x64_sys_sendmsg+0x19b/0x260 [ 430.662054][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 430.667337][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 430.672938][ T31] do_syscall_64+0xfa/0x3b0 [ 430.677745][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.683075][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.689260][ T31] ? clear_bhb_loop+0x60/0xb0 [ 430.694003][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.700328][ T31] RIP: 0033:0x7fa445d24ba9 [ 430.704754][ T31] RSP: 002b:00007ffe8a9af748 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 430.713245][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa445d24ba9 [ 430.721276][ T31] RDX: 0000000000000010 RSI: 0000200000001540 RDI: 0000000000000003 [ 430.729332][ T31] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 430.737443][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 430.745561][ T31] R13: 00007ffe8a9af968 R14: 00007ffe8a9af770 R15: 00007ffe8a9af760 [ 430.753705][ T31] [ 430.756765][ T31] INFO: task syz-executor231:5884 blocked for more than 144 seconds. [ 430.764947][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 430.772107][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.781068][ T31] task:syz-executor231 state:D stack:27144 pid:5884 tgid:5884 ppid:5873 task_flags:0x400140 flags:0x00004006 [ 430.793155][ T31] Call Trace: [ 430.796462][ T31] [ 430.799505][ T31] __schedule+0x1737/0x4d30 [ 430.804069][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.808955][ T31] ? schedule+0x165/0x360 [ 430.813414][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.818285][ T31] ? __pfx___schedule+0x10/0x10 [ 430.823266][ T31] ? schedule+0x91/0x360 [ 430.827531][ T31] schedule+0x165/0x360 [ 430.831750][ T31] schedule_preempt_disabled+0x13/0x30 [ 430.837228][ T31] __mutex_lock+0x7e6/0x1360 [ 430.841884][ T31] ? __mutex_lock+0x5b6/0x1360 [ 430.846669][ T31] ? nfsd_nl_listener_set_doit+0x137/0x1690 [ 430.852721][ T31] ? __pfx___mutex_lock+0x10/0x10 [ 430.857796][ T31] ? __asan_memset+0x22/0x50 [ 430.862499][ T31] ? ____sys_sendmsg+0x505/0x830 [ 430.867466][ T31] ? ___sys_sendmsg+0x21f/0x2a0 [ 430.872435][ T31] ? __x64_sys_sendmsg+0x19b/0x260 [ 430.877594][ T31] nfsd_nl_listener_set_doit+0x137/0x1690 [ 430.883427][ T31] ? __pfx___nla_validate_parse+0x10/0x10 [ 430.889221][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 430.895436][ T31] ? __nla_parse+0x40/0x60 [ 430.900023][ T31] ? genl_family_rcv_msg_attrs_parse+0x1c9/0x2a0 [ 430.906416][ T31] genl_family_rcv_msg_doit+0x212/0x300 [ 430.912120][ T31] ? __pfx_genl_family_rcv_msg_doit+0x10/0x10 [ 430.918402][ T31] ? bpf_lsm_capable+0x9/0x20 [ 430.923183][ T31] ? security_capable+0x7e/0x2e0 [ 430.928250][ T31] genl_rcv_msg+0x60e/0x790 [ 430.932849][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 430.937890][ T31] ? __pfx_nfsd_nl_listener_set_doit+0x10/0x10 [ 430.944139][ T31] netlink_rcv_skb+0x205/0x470 [ 430.949022][ T31] ? __pfx_genl_rcv_msg+0x10/0x10 [ 430.954102][ T31] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 430.959477][ T31] ? down_read+0x1ad/0x2e0 [ 430.963976][ T31] genl_rcv+0x28/0x40 [ 430.967945][ T31] netlink_unicast+0x759/0x8e0 [ 430.972861][ T31] netlink_sendmsg+0x805/0xb30 [ 430.977672][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 430.983024][ T31] ? aa_sock_msg_perm+0xf1/0x1d0 [ 430.988072][ T31] ? bpf_lsm_socket_sendmsg+0x9/0x20 [ 430.993440][ T31] ? __pfx_netlink_sendmsg+0x10/0x10 [ 430.998750][ T31] __sock_sendmsg+0x219/0x270 [ 431.003503][ T31] ____sys_sendmsg+0x505/0x830 [ 431.008289][ T31] ? __pfx_____sys_sendmsg+0x10/0x10 [ 431.013735][ T31] ? import_iovec+0x74/0xa0 [ 431.018291][ T31] ___sys_sendmsg+0x21f/0x2a0 [ 431.023156][ T31] ? __pfx____sys_sendmsg+0x10/0x10 [ 431.028440][ T31] ? do_raw_spin_lock+0x121/0x290 [ 431.033645][ T31] __x64_sys_sendmsg+0x19b/0x260 [ 431.038632][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 431.044794][ T31] ? __pfx___x64_sys_sendmsg+0x10/0x10 [ 431.050544][ T31] do_syscall_64+0xfa/0x3b0 [ 431.055103][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 431.060434][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 431.069141][ T31] ? clear_bhb_loop+0x60/0xb0 [ 431.073917][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 431.079935][ T31] RIP: 0033:0x7fa445d24ba9 [ 431.084389][ T31] RSP: 002b:00007ffe8a9af748 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 431.092898][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa445d24ba9 [ 431.100947][ T31] RDX: 0000000000000010 RSI: 0000200000001540 RDI: 0000000000000003 [ 431.108934][ T31] RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0 [ 431.117039][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000027765 [ 431.125367][ T31] R13: 00007ffe8a9af75c R14: 00007ffe8a9af770 R15: 00007ffe8a9af760 [ 431.133438][ T31] [ 431.136481][ T31] [ 431.136481][ T31] Showing all locks held in the system: [ 431.144327][ T31] 1 lock held by khungtaskd/31: [ 431.149206][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 431.159178][ T31] 2 locks held by getty/5611: [ 431.163945][ T31] #0: ffff88814d9160a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 431.174264][ T31] #1: ffffc900036c32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 431.184655][ T31] 2 locks held by syz-executor231/5874: [ 431.190272][ T31] #0: ffffffff8f99d770 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 431.198556][ T31] #1: ffffffff8e824528 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x137/0x1690 [ 431.208914][ T31] 2 locks held by syz-executor231/5878: [ 431.214505][ T31] #0: ffffffff8f99d770 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 431.222877][ T31] #1: ffffffff8e824528 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x137/0x1690 [ 431.233225][ T31] 2 locks held by syz-executor231/5879: [ 431.238762][ T31] #0: ffffffff8f99d770 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 431.246993][ T31] #1: ffffffff8e824528 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x137/0x1690 [ 431.257495][ T31] 2 locks held by syz-executor231/5884: [ 431.263086][ T31] #0: ffffffff8f99d770 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 [ 431.271588][ T31] #1: ffffffff8e824528 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0x137/0x1690 [ 431.281917][ T31] [ 431.284250][ T31] ============================================= [ 431.284250][ T31] [ 431.292715][ T31] NMI backtrace for cpu 0 [ 431.292731][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 431.292751][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 431.292761][ T31] Call Trace: [ 431.292768][ T31] [ 431.292775][ T31] dump_stack_lvl+0x189/0x250 [ 431.292809][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.292833][ T31] ? __pfx__printk+0x10/0x10 [ 431.292871][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 431.292895][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 431.292919][ T31] ? __pfx__printk+0x10/0x10 [ 431.292947][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 431.292968][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 431.292989][ T31] watchdog+0xf93/0xfe0 [ 431.293009][ T31] ? watchdog+0x1de/0xfe0 [ 431.293031][ T31] kthread+0x70e/0x8a0 [ 431.293058][ T31] ? __pfx_watchdog+0x10/0x10 [ 431.293076][ T31] ? __pfx_kthread+0x10/0x10 [ 431.293103][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 431.293126][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 431.293148][ T31] ? __pfx_kthread+0x10/0x10 [ 431.293175][ T31] ret_from_fork+0x3f9/0x770 [ 431.293200][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 431.293228][ T31] ? __switch_to_asm+0x39/0x70 [ 431.293244][ T31] ? __switch_to_asm+0x33/0x70 [ 431.293259][ T31] ? __pfx_kthread+0x10/0x10 [ 431.293286][ T31] ret_from_fork_asm+0x1a/0x30 [ 431.293319][ T31] [ 431.293326][ T31] Sending NMI from CPU 0 to CPUs 1: [ 431.442549][ C1] NMI backtrace for cpu 1 [ 431.442567][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 431.442585][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 431.442593][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 431.442619][ C1] Code: d3 e8 02 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 13 ba 28 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 431.442631][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c2 [ 431.442646][ C1] RAX: 269a2a78293c2f00 RBX: ffffffff8196da38 RCX: 269a2a78293c2f00 [ 431.442657][ C1] RDX: 0000000000000001 RSI: ffffffff8dc6a0fe RDI: ffffffff8c04d400 [ 431.442668][ C1] RBP: ffffc90000197f20 R08: ffff8880b8732f5b R09: 1ffff110170e65eb [ 431.442678][ C1] R10: dffffc0000000000 R11: ffffed10170e65ec R12: ffffffff8fe3cf30 [ 431.442689][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003ad8b40 [ 431.442699][ C1] FS: 0000000000000000(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000 [ 431.442711][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 431.442722][ C1] CR2: 000055e9e73cc168 CR3: 000000000e338000 CR4: 00000000003526f0 [ 431.442738][ C1] Call Trace: [ 431.442746][ C1] [ 431.442752][ C1] default_idle+0x13/0x20 [ 431.442767][ C1] default_idle_call+0x74/0xb0 [ 431.442783][ C1] do_idle+0x1e8/0x510 [ 431.442804][ C1] ? __pfx_do_idle+0x10/0x10 [ 431.442830][ C1] cpu_startup_entry+0x44/0x60 [ 431.442847][ C1] start_secondary+0x101/0x110 [ 431.442863][ C1] common_startup_64+0x13e/0x147 [ 431.442884][ C1] [ 431.443531][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 431.443546][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 431.443566][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 431.443576][ T31] Call Trace: [ 431.443585][ T31] [ 431.443593][ T31] dump_stack_lvl+0x99/0x250 [ 431.443619][ T31] ? __asan_memcpy+0x40/0x70 [ 431.443645][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 431.443668][ T31] ? __pfx__printk+0x10/0x10 [ 431.443703][ T31] vpanic+0x281/0x750 [ 431.443726][ T31] ? __pfx_vpanic+0x10/0x10 [ 431.443743][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 431.443768][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 431.443801][ T31] panic+0xb9/0xc0 [ 431.443820][ T31] ? __pfx_panic+0x10/0x10 [ 431.443842][ T31] ? irq_work_queue+0xc3/0x140 [ 431.443865][ T31] ? nmi_trigger_cpumask_backtrace+0x234/0x300 [ 431.443889][ T31] watchdog+0xfd2/0xfe0 [ 431.443912][ T31] ? watchdog+0x1de/0xfe0 [ 431.443936][ T31] kthread+0x70e/0x8a0 [ 431.443963][ T31] ? __pfx_watchdog+0x10/0x10 [ 431.443980][ T31] ? __pfx_kthread+0x10/0x10 [ 431.444006][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 431.444028][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 431.444048][ T31] ? __pfx_kthread+0x10/0x10 [ 431.444073][ T31] ret_from_fork+0x3f9/0x770 [ 431.444097][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 431.444123][ T31] ? __switch_to_asm+0x39/0x70 [ 431.444138][ T31] ? __switch_to_asm+0x33/0x70 [ 431.444152][ T31] ? __pfx_kthread+0x10/0x10 [ 431.444186][ T31] ret_from_fork_asm+0x1a/0x30 [ 431.444218][ T31] [ 431.767057][ T31] Kernel Offset: disabled [ 431.771392][ T31] Rebooting in 86400 seconds..