./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1804865038 <...> =process permissive=1 [ 47.892032][ T30] audit: type=1400 audit(1751442620.299:61): avc: denied { siginh } for pid=5659 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.7' (ED25519) to the list of known hosts. execve("./syz-executor1804865038", ["./syz-executor1804865038"], 0x7ffd8d258460 /* 10 vars */) = 0 brk(NULL) = 0x55557f6ed000 brk(0x55557f6edd00) = 0x55557f6edd00 arch_prctl(ARCH_SET_FS, 0x55557f6ed380) = 0 set_tid_address(0x55557f6ed650) = 5814 set_robust_list(0x55557f6ed660, 24) = 0 rseq(0x55557f6edca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1804865038", 4096) = 28 getrandom("\x8c\x4b\x6d\x41\xe0\x42\xe5\x8f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557f6edd00 [ 61.663178][ T30] audit: type=1400 audit(1751442634.179:62): avc: denied { write } for pid=5811 comm="strace-static-x" path="pipe:[3773]" dev="pipefs" ino=3773 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 brk(0x55557f70ed00) = 0x55557f70ed00 brk(0x55557f70f000) = 0x55557f70f000 mprotect(0x7f4503a6e000, 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 5815 attached , child_tidptr=0x55557f6ed650) = 5815 [pid 5815] set_robust_list(0x55557f6ed660, 24) = 0 [pid 5815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 61.773846][ T30] audit: type=1400 audit(1751442634.289:63): avc: denied { execmem } for pid=5814 comm="syz-executor180" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 5815] setpgid(0, 0) = 0 [pid 5815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5815] write(3, "1000", 4) = 4 [pid 5815] close(3executing program ) = 0 [pid 5815] write(1, "executing program\n", 18) = 18 [pid 5815] creat("./file0", 000) = 3 [pid 5815] pipe2([4, 5], 0) = 0 [pid 5815] write(5, "\x15\x00\x00\x00\x65\xff\xff\x01\x7f\x00\x0e\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21 [pid 5815] dup(5) = 6 [pid 5815] write(6, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 5815] write(6, "\xb0\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\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\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 176) = 176 [pid 5815] write(6, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 5815] write(6, "\x28\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 40) = 40 [pid 5815] mount(NULL, "./file0", "9p", 0, "trans=fd,rfdno=0x0000000000000004,wfdno=0x0000000000000006,") = 0 [pid 5815] openat(AT_FDCWD, "./file0", O_RDWR|O_CREAT|O_NONBLOCK|O_NOFOLLOW, 000) = 7 [ 61.922621][ T30] audit: type=1400 audit(1751442634.439:64): avc: denied { mounton } for pid=5815 comm="syz-executor180" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=file permissive=1 [ 61.945812][ T30] audit: type=1400 audit(1751442634.439:65): avc: denied { mount } for pid=5815 comm="syz-executor180" name="/" dev="9p" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 61.968271][ T30] audit: type=1400 audit(1751442634.469:66): avc: denied { read write } for pid=5815 comm="syz-executor180" dev="9p" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 61.989997][ T30] audit: type=1400 audit(1751442634.469:67): avc: denied { open } for pid=5815 comm="syz-executor180" path="/root/file0" dev="9p" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [pid 5815] writev(7, [{iov_base="\x14\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\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\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=131072}, {iov_base=NULL, iov_len=0}], 2 [pid 5814] kill(-5815, SIGKILL) = 0 [pid 5814] kill(5815, SIGKILL) = 0 [pid 5814] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5814] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5814] getdents64(3, 0x55557f6ee6f0 /* 2 entries */, 32768) = 48 [pid 5814] getdents64(3, 0x55557f6ee6f0 /* 0 entries */, 32768) = 0 [pid 5814] close(3) = 0 [ 75.981893][ T43] cfg80211: failed to load regulatory.db [ 285.900724][ T31] INFO: task syz-executor180:5815 blocked for more than 143 seconds. [ 285.908795][ T31] Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 [ 285.916452][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 285.925230][ T31] task:syz-executor180 state:D stack:26504 pid:5815 tgid:5815 ppid:5814 task_flags:0x400140 flags:0x00004006 [ 285.937206][ T31] Call Trace: [ 285.940475][ T31] [ 285.943423][ T31] __schedule+0x116a/0x5de0 [ 285.947953][ T31] ? __lock_acquire+0x622/0x1c90 [ 285.952915][ T31] ? __pfx___schedule+0x10/0x10 [ 285.957765][ T31] ? find_held_lock+0x2b/0x80 [ 285.962458][ T31] ? schedule+0x2d7/0x3a0 [ 285.966786][ T31] schedule+0xe7/0x3a0 [ 285.970863][ T31] netfs_wait_for_request+0x161/0x5a0 [ 285.976255][ T31] ? __pfx_netfs_write_collection+0x10/0x10 [ 285.982170][ T31] ? __pfx_netfs_wait_for_request+0x10/0x10 [ 285.988061][ T31] ? netfs_wake_collector+0x114/0x160 [ 285.993455][ T31] ? __pfx_autoremove_wake_function+0x10/0x10 [ 285.999527][ T31] ? netfs_unbuffered_write+0x19c/0x230 [ 286.005094][ T31] netfs_unbuffered_write_iter_locked+0x8c3/0xc80 [ 286.011538][ T31] netfs_unbuffered_write_iter+0x414/0x6d0 [ 286.017353][ T31] v9fs_file_write_iter+0xbf/0x100 [ 286.022474][ T31] do_iter_readv_writev+0x657/0x950 [ 286.027680][ T31] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 286.033451][ T31] vfs_writev+0x35f/0xde0 [ 286.037803][ T31] ? __pfx_vfs_writev+0x10/0x10 [ 286.042694][ T31] ? do_raw_spin_lock+0x12c/0x2b0 [ 286.047745][ T31] ? __pfx_ptrace_do_notify+0x10/0x10 [ 286.053155][ T31] ? do_writev+0x132/0x340 [ 286.057569][ T31] do_writev+0x132/0x340 [ 286.061867][ T31] ? __pfx_do_writev+0x10/0x10 [ 286.066629][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.071840][ T31] ? ptrace_notify+0xf1/0x130 [ 286.076515][ T31] do_syscall_64+0xcd/0x4c0 [ 286.081035][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.086922][ T31] RIP: 0033:0x7f45039faf39 [ 286.091337][ T31] RSP: 002b:00007ffeb04406c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 286.099744][ T31] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007f45039faf39 [ 286.107722][ T31] RDX: 0000000000000002 RSI: 0000200000000000 RDI: 0000000000000007 [ 286.115716][ T31] RBP: 00002000000002c0 R08: 0000000000000006 R09: 0000000000000006 [ 286.123689][ T31] R10: 0000000000000006 R11: 0000000000000246 R12: 0000200000000400 [ 286.131679][ T31] R13: 00007f4503a4404e R14: 0000000000000001 R15: 0000000000000001 [ 286.139632][ T31] [ 286.142719][ T31] [ 286.142719][ T31] Showing all locks held in the system: [ 286.150419][ T31] 1 lock held by khungtaskd/31: [ 286.155327][ T31] #0: ffffffff8e5c4940 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 [ 286.165211][ T31] 7 locks held by kworker/u8:3/49: [ 286.170323][ T31] #0: ffff88801b881148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 [ 286.181489][ T31] #1: ffffc90000b97d10 ((work_completion)(&(&kfence_timer)->work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 [ 286.193600][ T31] #2: ffffffff8e4668f0 (cpu_hotplug_lock){++++}-{0:0}, at: static_key_disable+0x12/0x20 [ 286.203461][ T31] #3: ffffffff9b0654f8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x14c/0x4c0 [ 286.213830][ T31] #4: ffffffff8e482f08 (text_mutex){+.+.}-{4:4}, at: arch_jump_label_transform_apply+0x17/0x30 [ 286.224297][ T31] #5: ffffffff8e5c4940 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x37/0x570 [ 286.233875][ T31] #6: ffff88801b86d078 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0x10f/0x310 [ 286.244560][ T31] 2 locks held by getty/5582: [ 286.249207][ T31] #0: ffff88814c8360a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 286.258947][ T31] #1: ffffc900036bb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 [ 286.269061][ T31] 2 locks held by syz-executor180/5815: [ 286.274601][ T31] #0: ffff88802c3c4428 (sb_writers#9){.+.+}-{0:0}, at: do_writev+0x132/0x340 [ 286.283506][ T31] #1: ffff88807da28148 (&sb->s_type->i_mutex_key#15){++++}-{4:4}, at: netfs_start_io_direct+0x116/0x260 [ 286.294745][ T31] [ 286.297057][ T31] ============================================= [ 286.297057][ T31] [ 286.305482][ T31] NMI backtrace for cpu 0 [ 286.305493][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) [ 286.305513][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.305522][ T31] Call Trace: [ 286.305529][ T31] [ 286.305535][ T31] dump_stack_lvl+0x116/0x1f0 [ 286.305563][ T31] nmi_cpu_backtrace+0x27b/0x390 [ 286.305584][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.305607][ T31] nmi_trigger_cpumask_backtrace+0x29c/0x300 [ 286.305629][ T31] watchdog+0xf70/0x12c0 [ 286.305653][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.305670][ T31] ? lockdep_hardirqs_on+0x7c/0x110 [ 286.305695][ T31] ? __kthread_parkme+0x19e/0x250 [ 286.305720][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.305738][ T31] kthread+0x3c2/0x780 [ 286.305755][ T31] ? __pfx_kthread+0x10/0x10 [ 286.305772][ T31] ? rcu_is_watching+0x12/0xc0 [ 286.305793][ T31] ? __pfx_kthread+0x10/0x10 [ 286.305809][ T31] ret_from_fork+0x5d4/0x6f0 [ 286.305832][ T31] ? __pfx_kthread+0x10/0x10 [ 286.305847][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.305876][ T31] [ 286.305882][ T31] Sending NMI from CPU 0 to CPUs 1: [ 286.423342][ C1] NMI backtrace for cpu 1 [ 286.423355][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) [ 286.423372][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.423379][ C1] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 286.423402][ C1] Code: ab 71 02 c3 cc cc cc cc 0f 1f 00 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 53 30 29 00 fb f4 0c fb 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 [ 286.423414][ C1] RSP: 0018:ffffc90000197df8 EFLAGS: 000002c6 [ 286.423426][ C1] RAX: 0000000000097f7b RBX: 0000000000000001 RCX: ffffffff8b80dc69 [ 286.423434][ C1] RDX: 0000000000000000 RSI: ffffffff8de1a0ee RDI: ffffffff8c157ca0 [ 286.423443][ C1] RBP: ffffed1003c56488 R08: 0000000000000001 R09: ffffed10170a6645 [ 286.423451][ C1] R10: ffff8880b853322b R11: 0000000000000001 R12: 0000000000000001 [ 286.423459][ C1] R13: ffff88801e2b2440 R14: ffffffff90a80d50 R15: 0000000000000000 [ 286.423467][ C1] FS: 0000000000000000(0000) GS:ffff888124852000(0000) knlGS:0000000000000000 [ 286.423481][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.423489][ C1] CR2: 00005642af159660 CR3: 000000000e382000 CR4: 00000000003526f0 [ 286.423498][ C1] Call Trace: [ 286.423503][ C1] [ 286.423508][ C1] default_idle+0x13/0x20 [ 286.423519][ C1] default_idle_call+0x6d/0xb0 [ 286.423531][ C1] do_idle+0x391/0x510 [ 286.423548][ C1] ? __pfx_do_idle+0x10/0x10 [ 286.423563][ C1] ? rcu_is_watching+0x12/0xc0 [ 286.423578][ C1] ? _raw_spin_unlock_irqrestore+0x52/0x80 [ 286.423595][ C1] ? lockdep_hardirqs_on+0x7c/0x110 [ 286.423613][ C1] cpu_startup_entry+0x4f/0x60 [ 286.423629][ C1] start_secondary+0x21d/0x2b0 [ 286.423646][ C1] ? __pfx_start_secondary+0x10/0x10 [ 286.423663][ C1] common_startup_64+0x13e/0x148 [ 286.423687][ C1] [ 286.424448][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 286.424459][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) [ 286.424477][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.424486][ T31] Call Trace: [ 286.424491][ T31] [ 286.424498][ T31] dump_stack_lvl+0x3d/0x1f0 [ 286.424521][ T31] panic+0x71c/0x800 [ 286.424543][ T31] ? __pfx_panic+0x10/0x10 [ 286.424563][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 286.424585][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.424605][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 286.424624][ T31] ? watchdog+0xdda/0x12c0 [ 286.424640][ T31] ? watchdog+0xdcd/0x12c0 [ 286.424658][ T31] watchdog+0xdeb/0x12c0 [ 286.424678][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.424693][ T31] ? lockdep_hardirqs_on+0x7c/0x110 [ 286.424714][ T31] ? __kthread_parkme+0x19e/0x250 [ 286.424735][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.424750][ T31] kthread+0x3c2/0x780 [ 286.424765][ T31] ? __pfx_kthread+0x10/0x10 [ 286.424780][ T31] ? rcu_is_watching+0x12/0xc0 [ 286.424797][ T31] ? __pfx_kthread+0x10/0x10 [ 286.424811][ T31] ret_from_fork+0x5d4/0x6f0 [ 286.424832][ T31] ? __pfx_kthread+0x10/0x10 [ 286.424846][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.424870][ T31] [ 286.737395][ T31] Kernel Offset: disabled [ 286.741712][ T31] Rebooting in 86400 seconds..