./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3873619705 <...> Warning: Permanently added '10.128.0.46' (ED25519) to the list of known hosts. execve("./syz-executor3873619705", ["./syz-executor3873619705"], 0x7fffd853ba60 /* 10 vars */) = 0 brk(NULL) = 0x555556f94000 brk(0x555556f94d00) = 0x555556f94d00 arch_prctl(ARCH_SET_FS, 0x555556f94380) = 0 set_tid_address(0x555556f94650) = 295 set_robust_list(0x555556f94660, 24) = 0 rseq(0x555556f94ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3873619705", 4096) = 28 getrandom("\xf0\x2c\x11\x92\x6c\xe6\x23\x4f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556f94d00 brk(0x555556fb5d00) = 0x555556fb5d00 brk(0x555556fb6000) = 0x555556fb6000 mprotect(0x7f55e464c000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556f94650) = 296 ./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x555556f94660, 24) = 0 [pid 296] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 296] setsid() = 1 [pid 296] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 296] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 296] unshare(CLONE_NEWNS) = 0 [pid 296] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 296] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 296] unshare(CLONE_NEWCGROUP) = 0 [pid 296] unshare(CLONE_NEWUTS) = 0 [pid 296] unshare(CLONE_SYSVSEM) = 0 [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 296] getpid() = 1 [pid 296] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 12]) = 0 [ 23.751260][ T30] audit: type=1400 audit(1692484607.079:67): avc: denied { mounton } for pid=296 comm="syz-executor387" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [ 23.776591][ T30] audit: type=1400 audit(1692484607.079:68): avc: denied { mount } for pid=296 comm="syz-executor387" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 23.799102][ T30] audit: type=1400 audit(1692484607.079:69): avc: denied { mounton } for pid=296 comm="syz-executor387" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [ 23.820460][ T30] audit: type=1400 audit(1692484607.119:70): avc: denied { mounton } for pid=296 comm="syz-executor387" path="/dev/binderfs" dev="devtmpfs" ino=362 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1 [ 23.843563][ T30] audit: type=1400 audit(1692484607.119:71): avc: denied { mount } for pid=296 comm="syz-executor387" name="/" dev="binder" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [pid 297] sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x80\x00\x00\x00\x24\x00\x0b\x0e\x00\x00\x00\x00\xfd\xff\xff\xff\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x0a\x00\x01\x00\x6e\x65\x74\x65\x6d\x00\x00\x00\x50\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x31\x00\x02\x00\x86\x72\x7a\x9b\x4f\x98\xfc\x66\xd4\xe5\x25\x92\x13\x96\xa8\xc1\x33\x56\x1b\x5b"..., iov_len=128}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 296] kill(-2, SIGKILL) = 0 [pid 296] kill(2, SIGKILL) = 0 [pid 296] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 296] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 296] getdents64(3, 0x555556f956f0 /* 2 entries */, 32768) = 48 [pid 296] getdents64(3, 0x555556f956f0 /* 0 entries */, 32768) = 0 [pid 296] close(3) = 0 [ 177.004055][ C1] watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz-executor387:297] [ 177.012483][ C1] Modules linked in: [ 177.016224][ C1] CPU: 1 PID: 297 Comm: syz-executor387 Not tainted 5.15.122-syzkaller-00676-g1463976ddc64 #0 [ 177.026289][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 177.036180][ C1] RIP: 0010:kvm_wait+0x147/0x180 [ 177.040953][ C1] Code: 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 34 41 0f b6 45 00 44 38 f0 75 10 66 90 0f 00 2d 6b ff f2 03 fb f4 24 ff ff ff fb e9 1e ff ff ff 44 89 e9 80 e1 07 38 c1 7c a3 4c [ 177.060913][ C1] RSP: 0018:ffffc90000946b00 EFLAGS: 00000246 [ 177.066815][ C1] RAX: 0000000000000003 RBX: 1ffff92000128d64 RCX: ffffffff8154ce3f [ 177.074626][ C1] RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffffffff86f3c1ec [ 177.082438][ C1] RBP: ffffc90000946bb0 R08: dffffc0000000000 R09: fffffbfff0de783e [ 177.090254][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 177.098063][ C1] R13: ffffffff86f3c1ec R14: 0000000000000003 R15: 1ffff92000128d68 [ 177.105877][ C1] FS: 0000555556f94380(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 177.114659][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 177.121062][ C1] CR2: 0000000000000000 CR3: 000000011e945000 CR4: 00000000003506a0 [ 177.128875][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 177.136683][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 177.144496][ C1] Call Trace: [ 177.147622][ C1] [ 177.150311][ C1] ? show_regs+0x58/0x60 [ 177.154387][ C1] ? watchdog_timer_fn+0x4b1/0x5f0 [ 177.159336][ C1] ? proc_watchdog_cpumask+0xd0/0xd0 [ 177.164455][ C1] ? __hrtimer_run_queues+0x41a/0xad0 [ 177.169667][ C1] ? hrtimer_interrupt+0xaa0/0xaa0 [ 177.174625][ C1] ? clockevents_program_event+0x22f/0x300 [ 177.180273][ C1] ? ktime_get_update_offsets_now+0x2ba/0x2d0 [ 177.186155][ C1] ? hrtimer_interrupt+0x40c/0xaa0 [ 177.191106][ C1] ? __sysvec_apic_timer_interrupt+0xfd/0x3c0 [ 177.197002][ C1] ? sysvec_apic_timer_interrupt+0x95/0xc0 [ 177.202645][ C1] [ 177.205422][ C1] [ 177.208200][ C1] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 177.214188][ C1] ? __pv_queued_spin_lock_slowpath+0x65f/0xc40 [ 177.220268][ C1] ? kvm_wait+0x147/0x180 [ 177.224429][ C1] ? asm_sysvec_call_function_single+0x1b/0x20 [ 177.230422][ C1] ? kvm_arch_para_hints+0x30/0x30 [ 177.235369][ C1] ? __pv_queued_spin_lock_slowpath+0x65f/0xc40 [ 177.241442][ C1] __pv_queued_spin_lock_slowpath+0x6bc/0xc40 [ 177.247348][ C1] ? __pv_queued_spin_unlock_slowpath+0x310/0x310 [ 177.253595][ C1] ? __kmalloc+0x13a/0x270 [ 177.257844][ C1] ? kvmalloc_node+0x1f0/0x4d0 [ 177.262447][ C1] _raw_spin_lock_bh+0x139/0x1b0 [ 177.267219][ C1] ? _raw_spin_lock_irq+0x1b0/0x1b0 [ 177.272363][ C1] ? __kasan_check_read+0x11/0x20 [ 177.277223][ C1] get_dist_table+0x207/0x2e0 [ 177.281735][ C1] netem_change+0xa05/0x20c0 [ 177.286160][ C1] ? __x64_sys_sendmsg+0x7b/0x90 [ 177.290932][ C1] ? do_syscall_64+0x3d/0xb0 [ 177.295363][ C1] ? entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 177.301264][ C1] ? netem_destroy+0xc0/0xc0 [ 177.305694][ C1] ? hrtimer_init+0x30/0x160 [ 177.310118][ C1] netem_init+0x5b/0xb0 [ 177.314112][ C1] ? qdisc_peek_dequeued+0x230/0x230 [ 177.319230][ C1] qdisc_create+0x890/0x12e0 [ 177.323658][ C1] ? qdisc_notify+0x370/0x370 [ 177.328171][ C1] ? __nla_parse+0x43/0x60 [ 177.332423][ C1] tc_modify_qdisc+0x8b4/0x14b0 [ 177.337111][ C1] ? qdisc_offload_graft_helper+0x2a0/0x2a0 [ 177.342840][ C1] ? wait_for_completion_killable_timeout+0x10/0x10 [ 177.349368][ C1] ? ns_capable+0x89/0xe0 [ 177.353535][ C1] ? netlink_net_capable+0x125/0x160 [ 177.358654][ C1] ? qdisc_offload_graft_helper+0x2a0/0x2a0 [ 177.364394][ C1] rtnetlink_rcv_msg+0x951/0xc40 [ 177.369157][ C1] ? rtnetlink_bind+0x80/0x80 [ 177.373669][ C1] ? avc_denied+0x13f/0x1b0 [ 177.378009][ C1] ? avc_has_perm_noaudit+0x2dd/0x430 [ 177.383217][ C1] ? avc_denied+0x1b0/0x1b0 [ 177.387559][ C1] ? avc_has_perm+0x16f/0x260 [ 177.392075][ C1] ? ____kasan_kmalloc+0xed/0x110 [ 177.396929][ C1] ? avc_has_perm_noaudit+0x430/0x430 [ 177.402136][ C1] ? do_syscall_64+0x3d/0xb0 [ 177.406567][ C1] netlink_rcv_skb+0x1cf/0x410 [ 177.411162][ C1] ? rtnetlink_bind+0x80/0x80 [ 177.415680][ C1] ? netlink_ack+0xb10/0xb10 [ 177.420106][ C1] ? __netlink_lookup+0x37b/0x3a0 [ 177.424962][ C1] rtnetlink_rcv+0x1c/0x20 [ 177.429217][ C1] netlink_unicast+0x8df/0xac0 [ 177.433815][ C1] ? netlink_detachskb+0x90/0x90 [ 177.438592][ C1] ? security_netlink_send+0x7b/0xa0 [ 177.443713][ C1] netlink_sendmsg+0xa0a/0xd20 [ 177.448312][ C1] ? netlink_getsockopt+0x560/0x560 [ 177.453434][ C1] ? security_socket_sendmsg+0x82/0xb0 [ 177.458729][ C1] ? netlink_getsockopt+0x560/0x560 [ 177.463761][ C1] ____sys_sendmsg+0x59e/0x8f0 [ 177.468360][ C1] ? __sys_sendmsg_sock+0x40/0x40 [ 177.473220][ C1] ? import_iovec+0xe5/0x120 [ 177.477666][ C1] ___sys_sendmsg+0x252/0x2e0 [ 177.482160][ C1] ? __sys_sendmsg+0x260/0x260 [ 177.486758][ C1] ? finish_task_switch+0x167/0x7b0 [ 177.491796][ C1] ? __schedule+0xcc6/0x1580 [ 177.496222][ C1] ? __kasan_check_write+0x14/0x20 [ 177.501255][ C1] ? _raw_spin_lock_irq+0xa5/0x1b0 [ 177.506204][ C1] ? __kasan_check_read+0x11/0x20 [ 177.511063][ C1] ? __fdget+0x179/0x240 [ 177.515140][ C1] __se_sys_sendmsg+0x19a/0x260 [ 177.519828][ C1] ? _raw_spin_unlock_irq+0x4e/0x70 [ 177.524863][ C1] ? __x64_sys_sendmsg+0x90/0x90 [ 177.529636][ C1] ? __kasan_check_read+0x11/0x20 [ 177.534497][ C1] __x64_sys_sendmsg+0x7b/0x90 [ 177.539095][ C1] do_syscall_64+0x3d/0xb0 [ 177.543349][ C1] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 177.549085][ C1] RIP: 0033:0x7f55e45d8f89 [ 177.553355][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 177.572970][ C1] RSP: 002b:00007ffc0db47a48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 177.581212][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f55e45d8f89 [ 177.589029][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003 [ 177.596837][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000555556f95610 [ 177.604653][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 177.612556][ C1] R13: 0000000000000000 R14: 00007ffc0db47a70 R15: 00007ffc0db47a60 [ 177.620371][ C1]