./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4239015348 <...> Warning: Permanently added '10.128.1.31' (ED25519) to the list of known hosts. execve("./syz-executor4239015348", ["./syz-executor4239015348"], 0x7fff48f594b0 /* 10 vars */) = 0 brk(NULL) = 0x555585095000 brk(0x555585095d40) = 0x555585095d40 arch_prctl(ARCH_SET_FS, 0x5555850953c0) = 0 set_tid_address(0x555585095690) = 5850 set_robust_list(0x5555850956a0, 24) = 0 rseq(0x555585095ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4239015348", 4096) = 28 getrandom("\xea\x80\x76\x81\xb3\xfd\x5c\xb5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555585095d40 brk(0x5555850b6d40) = 0x5555850b6d40 brk(0x5555850b7000) = 0x5555850b7000 mprotect(0x7efef5e8a000, 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 5851 attached , child_tidptr=0x555585095690) = 5851 [pid 5851] set_robust_list(0x5555850956a0, 24) = 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5851] setpgid(0, 0) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5851] write(3, "1000", 4) = 4 [pid 5851] close(3) = 0 [pid 5851] write(1, "executing program\n", 18executing program ) = 18 [pid 5851] futex(0x7efef5e9030c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5851] rt_sigaction(SIGRT_1, {sa_handler=0x7efef5e2c220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efef5e1d8a0}, NULL, 8) = 0 [pid 5851] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efef5d9f000 [pid 5851] mprotect(0x7efef5da0000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5851] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efef5dbf990, parent_tid=0x7efef5dbf990, exit_signal=0, stack=0x7efef5d9f000, stack_size=0x20300, tls=0x7efef5dbf6c0}./strace-static-x86_64: Process 5852 attached [pid 5852] rseq(0x7efef5dbffe0, 0x20, 0, 0x53053053) = 0 [pid 5852] set_robust_list(0x7efef5dbf9a0, 24 [pid 5851] <... clone3 resumed> => {parent_tid=[5852]}, 88) = 5852 [pid 5852] <... set_robust_list resumed>) = 0 [pid 5852] rt_sigprocmask(SIG_SETMASK, [], [pid 5851] rt_sigprocmask(SIG_SETMASK, [], [pid 5852] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5851] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5852] futex(0x7efef5e90308, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable) [pid 5851] futex(0x7efef5e90308, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5852] mmap(0x200000000000, 11755520, PROT_READ|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0xb635773f04ebbee0, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS|MAP_POPULATE, -1, 0xf6d0f000 [pid 5851] futex(0x7efef5e9030c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5851] futex(0x7efef5e9031c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5852] <... mmap resumed>) = 0x200000000000 [pid 5851] <... mmap resumed>) = 0x7efef5d7e000 [pid 5852] futex(0x7efef5e9030c, FUTEX_WAKE_PRIVATE, 1000000 [pid 5851] mprotect(0x7efef5d7f000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5851] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5852] <... futex resumed>) = 0 [pid 5852] futex(0x7efef5e90308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5851] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efef5d9e990, parent_tid=0x7efef5d9e990, exit_signal=0, stack=0x7efef5d7e000, stack_size=0x20300, tls=0x7efef5d9e6c0}./strace-static-x86_64: Process 5853 attached => {parent_tid=[5853]}, 88) = 5853 [pid 5851] rt_sigprocmask(SIG_SETMASK, [], [pid 5853] rseq(0x7efef5d9efe0, 0x20, 0, 0x53053053 [pid 5851] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5853] <... rseq resumed>) = 0 [pid 5851] futex(0x7efef5e90318, FUTEX_WAKE_PRIVATE, 1000000 [pid 5853] set_robust_list(0x7efef5d9e9a0, 24 [pid 5851] <... futex resumed>) = 0 [pid 5853] <... set_robust_list resumed>) = 0 [pid 5853] rt_sigprocmask(SIG_SETMASK, [], [pid 5851] futex(0x7efef5e9031c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5853] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5853] mremap(0x200000000000, 6291458, 6291458, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000a00000 [pid 5851] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5851] exit_group(0) = ? [pid 5852] <... futex resumed>) = ? [ 97.467930][ T44] cfg80211: failed to load regulatory.db [pid 5850] kill(-5851, SIGKILL) = 0 [pid 5850] kill(5851, SIGKILL) = 0 [pid 5850] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5850] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5850] getdents64(3, 0x555585096730 /* 2 entries */, 32768) = 48 [pid 5850] getdents64(3, 0x555585096730 /* 0 entries */, 32768) = 0 [pid 5850] close(3) = 0 [ 286.896487][ T31] INFO: task syz-executor423:5851 blocked for more than 143 seconds. [ 286.904915][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.912066][ T31] Blocked by coredump. [ 286.917168][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.926730][ T31] task:syz-executor423 state:D stack:26472 pid:5851 tgid:5851 ppid:5850 task_flags:0x40004c flags:0x00004002 [ 286.940491][ T31] Call Trace: [ 286.943834][ T31] [ 286.947115][ T31] __schedule+0x1737/0x4d30 [ 286.951823][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.957127][ T31] ? schedule+0x165/0x360 [ 286.961611][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.966840][ T31] ? __pfx___schedule+0x10/0x10 [ 286.971772][ T31] ? schedule+0x91/0x360 [ 286.976447][ T31] schedule+0x165/0x360 [ 286.980668][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.986500][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.992106][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.998358][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 287.004506][ T31] ? exit_mm+0xcc/0x2c0 [ 287.009084][ T31] ? __pfx_mm_release+0x10/0x10 [ 287.014091][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.019762][ T31] down_read+0x98/0x2e0 [ 287.023979][ T31] exit_mm+0xcc/0x2c0 [ 287.028343][ T31] ? __pfx_exit_mm+0x10/0x10 [ 287.033005][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.038639][ T31] do_exit+0x648/0x2300 [ 287.042890][ T31] ? __pfx_do_exit+0x10/0x10 [ 287.047943][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.053221][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.058953][ T31] do_group_exit+0x21c/0x2d0 [ 287.063620][ T31] __x64_sys_exit_group+0x3f/0x40 [ 287.069016][ T31] x64_sys_call+0x21f7/0x2200 [ 287.073755][ T31] do_syscall_64+0xfa/0x3b0 [ 287.078708][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.084042][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.090738][ T31] ? clear_bhb_loop+0x60/0xb0 [ 287.095781][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.101774][ T31] RIP: 0033:0x7efef5e04349 [ 287.106553][ T31] RSP: 002b:00007ffc537856f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 287.115367][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efef5e04349 [ 287.123387][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 287.132011][ T31] RBP: 00007efef5e902b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 287.140393][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007efef5e902b0 [ 287.149158][ T31] R13: 0000000000000000 R14: 00007efef5e90e40 R15: 00007efef5dd2160 [ 287.157525][ T31] [ 287.160653][ T31] INFO: task syz-executor423:5852 blocked for more than 143 seconds. [ 287.169096][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 287.176535][ T31] Blocked by coredump. [ 287.181248][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.190445][ T31] task:syz-executor423 state:D stack:26024 pid:5852 tgid:5851 ppid:5850 task_flags:0x40044c flags:0x00004002 [ 287.202754][ T31] Call Trace: [ 287.206358][ T31] [ 287.209337][ T31] __schedule+0x1737/0x4d30 [ 287.213994][ T31] ? __lock_acquire+0xab9/0xd20 [ 287.219330][ T31] ? schedule+0x165/0x360 [ 287.223721][ T31] ? __lock_acquire+0xab9/0xd20 [ 287.228980][ T31] ? __pfx___schedule+0x10/0x10 [ 287.233922][ T31] ? schedule+0x91/0x360 [ 287.238623][ T31] schedule+0x165/0x360 [ 287.242852][ T31] schedule_preempt_disabled+0x13/0x30 [ 287.248736][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 287.254344][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 287.260896][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 287.267521][ T31] ? exit_mm+0xcc/0x2c0 [ 287.271854][ T31] ? __pfx_mm_release+0x10/0x10 [ 287.277300][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.282667][ T31] down_read+0x98/0x2e0 [ 287.287285][ T31] exit_mm+0xcc/0x2c0 [ 287.291432][ T31] ? __pfx_exit_mm+0x10/0x10 [ 287.296638][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.301511][ T31] do_exit+0x648/0x2300 [ 287.306137][ T31] ? do_raw_spin_lock+0x121/0x290 [ 287.311272][ T31] ? __pfx_do_exit+0x10/0x10 [ 287.316282][ T31] do_group_exit+0x21c/0x2d0 [ 287.320928][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.326726][ T31] get_signal+0x1286/0x1340 [ 287.331352][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 287.337398][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.342673][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 287.348652][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 287.355188][ T31] ? exit_to_user_mode_loop+0x40/0x110 [ 287.360706][ T31] exit_to_user_mode_loop+0x75/0x110 [ 287.366831][ T31] do_syscall_64+0x2bd/0x3b0 [ 287.371506][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.377942][ T31] ? __switch_to_asm+0x39/0x70 [ 287.382759][ T31] ? clear_bhb_loop+0x60/0xb0 [ 287.387831][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.393786][ T31] RIP: 0033:0x7efef5e062e9 [ 287.398617][ T31] RSP: 002b:00007efef5dbf228 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 287.407515][ T31] RAX: fffffffffffffe00 RBX: 00007efef5e90308 RCX: 00007efef5e062e9 [ 287.415842][ T31] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007efef5e90308 [ 287.424392][ T31] RBP: 00007efef5e90300 R08: 00007efef5dbf6c0 R09: 00007efef5dbf6c0 [ 287.432961][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007efef5e9030c [ 287.441385][ T31] R13: 0000200000000000 R14: b635773f06ebbeed R15: 00007ffc53785678 [ 287.449743][ T31] [ 287.453012][ T31] [ 287.453012][ T31] Showing all locks held in the system: [ 287.464331][ T31] 1 lock held by khungtaskd/31: [ 287.469565][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 287.480309][ T31] 2 locks held by getty/5608: [ 287.485514][ T31] #0: ffff8880336860a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.495732][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 287.506274][ T31] 1 lock held by syz-executor423/5851: [ 287.512482][ T31] #0: ffff88807ceccd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.522054][ T31] 1 lock held by syz-executor423/5852: [ 287.527860][ T31] #0: ffff88807ceccd20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.537005][ T31] 2 locks held by syz-executor423/5853: [ 287.542673][ T31] [ 287.546152][ T31] ============================================= [ 287.546152][ T31] [ 287.555197][ T31] NMI backtrace for cpu 1 [ 287.555224][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.555256][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.555269][ T31] Call Trace: [ 287.555277][ T31] [ 287.555285][ T31] dump_stack_lvl+0x189/0x250 [ 287.555322][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.555351][ T31] ? __pfx__printk+0x10/0x10 [ 287.555395][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.555424][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.555446][ T31] ? irqentry_exit+0x74/0x90 [ 287.555474][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.555513][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.555540][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.555568][ T31] watchdog+0xf93/0xfe0 [ 287.555596][ T31] ? watchdog+0x1de/0xfe0 [ 287.555623][ T31] kthread+0x70e/0x8a0 [ 287.555657][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.555678][ T31] ? __pfx_kthread+0x10/0x10 [ 287.555717][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.555744][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.555770][ T31] ? __pfx_kthread+0x10/0x10 [ 287.555800][ T31] ret_from_fork+0x3f9/0x770 [ 287.555829][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.555861][ T31] ? __switch_to_asm+0x39/0x70 [ 287.555878][ T31] ? __switch_to_asm+0x33/0x70 [ 287.555895][ T31] ? __pfx_kthread+0x10/0x10 [ 287.555926][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.555960][ T31] [ 287.555968][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.709851][ C0] NMI backtrace for cpu 0 [ 287.709871][ C0] CPU: 0 UID: 0 PID: 5853 Comm: syz-executor423 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.709893][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.709903][ C0] RIP: 0010:__split_vma+0x2ea/0xa00 [ 287.709926][ C0] Code: 03 42 80 3c 28 00 74 05 e8 53 3e 0e 00 4c 8b 64 24 18 49 8b 54 24 08 48 ff ca 4c 8b 74 24 28 4c 89 f7 48 89 de e8 f6 f3 ff ff <4c> 89 f7 4c 89 e6 ba c0 0c 00 00 e8 c6 1d 62 09 89 c3 31 ff 89 c6 [ 287.709940][ C0] RSP: 0018:ffffc90004057480 EFLAGS: 00000286 [ 287.709956][ C0] RAX: 1ffff9200080af4e RBX: 0000200000198000 RCX: ffffffff8215080f [ 287.709969][ C0] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90004057a68 [ 287.709980][ C0] RBP: ffffc900040575d0 R08: 0000000000000003 R09: 0000000000000004 [ 287.709990][ C0] R10: dffffc0000000000 R11: fffffbfff34924ec R12: ffff888032215280 [ 287.710003][ C0] R13: dffffc0000000000 R14: ffffc90004057a60 R15: 1ffff9200080ae9c [ 287.710016][ C0] FS: 00007efef5d9e6c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 287.710030][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.710041][ C0] CR2: 00005599249785a0 CR3: 0000000071e9e000 CR4: 00000000003526f0 [ 287.710057][ C0] Call Trace: [ 287.710063][ C0] [ 287.710075][ C0] ? __pfx___split_vma+0x10/0x10 [ 287.710098][ C0] ? mas_find+0xb0e/0xd30 [ 287.710125][ C0] vms_gather_munmap_vmas+0x4ab/0x12b0 [ 287.710160][ C0] ? __pfx_vms_gather_munmap_vmas+0x10/0x10 [ 287.710188][ C0] ? move_page_tables+0x57a/0x1f50 [ 287.710213][ C0] ? __pfx_copy_vma+0x10/0x10 [ 287.710247][ C0] do_vmi_align_munmap+0x25d/0x420 [ 287.710282][ C0] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 287.710322][ C0] do_vmi_munmap+0x253/0x2e0 [ 287.710350][ C0] do_munmap+0xe1/0x140 [ 287.710369][ C0] ? __pfx_do_munmap+0x10/0x10 [ 287.710390][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.710407][ C0] ? security_mmap_addr+0x71/0x270 [ 287.710434][ C0] mremap_to+0x2df/0x7a0 [ 287.710462][ C0] ? __pfx_mremap_to+0x10/0x10 [ 287.710488][ C0] ? check_prep_vma+0x740/0xae0 [ 287.710518][ C0] __se_sys_mremap+0xa0b/0xef0 [ 287.710553][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.710581][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 287.710609][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 287.710633][ C0] do_syscall_64+0xfa/0x3b0 [ 287.710659][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.710676][ C0] ? __switch_to_asm+0x39/0x70 [ 287.710691][ C0] ? clear_bhb_loop+0x60/0xb0 [ 287.710710][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.710726][ C0] RIP: 0033:0x7efef5e062e9 [ 287.710741][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 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 b0 ff ff ff f7 d8 64 89 01 48 [ 287.710754][ C0] RSP: 002b:00007efef5d9e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.710770][ C0] RAX: ffffffffffffffda RBX: 00007efef5e90318 RCX: 00007efef5e062e9 [ 287.710782][ C0] RDX: 0000000000600002 RSI: 0000000000600002 RDI: 0000200000000000 [ 287.710793][ C0] RBP: 00007efef5e90310 R08: 0000200000a00000 R09: 00007efef5d9e6c0 [ 287.710805][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00007efef5e9031c [ 287.710815][ C0] R13: 0000200000000000 R14: b635773f06ebbeed R15: 00007ffc53785678 [ 287.710836][ C0] [ 287.711873][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 288.047374][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 288.058689][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 288.068773][ T31] Call Trace: [ 288.072173][ T31] [ 288.075157][ T31] dump_stack_lvl+0x99/0x250 [ 288.079801][ T31] ? __asan_memcpy+0x40/0x70 [ 288.084965][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 288.090287][ T31] ? __pfx__printk+0x10/0x10 [ 288.095191][ T31] vpanic+0x281/0x750 [ 288.099312][ T31] ? __pfx_vpanic+0x10/0x10 [ 288.104033][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 288.109736][ T31] ? preempt_schedule+0xae/0xc0 [ 288.114843][ T31] ? preempt_schedule_common+0x83/0xd0 [ 288.120447][ T31] panic+0xb9/0xc0 [ 288.124201][ T31] ? __pfx_panic+0x10/0x10 [ 288.128729][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 288.134157][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 288.141512][ T31] watchdog+0xfd2/0xfe0 [ 288.146061][ T31] ? watchdog+0x1de/0xfe0 [ 288.150434][ T31] kthread+0x70e/0x8a0 [ 288.154559][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.159342][ T31] ? __pfx_kthread+0x10/0x10 [ 288.164008][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 288.169248][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 288.174478][ T31] ? __pfx_kthread+0x10/0x10 [ 288.179099][ T31] ret_from_fork+0x3f9/0x770 [ 288.183731][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.188876][ T31] ? __switch_to_asm+0x39/0x70 [ 288.193658][ T31] ? __switch_to_asm+0x33/0x70 [ 288.198440][ T31] ? __pfx_kthread+0x10/0x10 [ 288.203785][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.208795][ T31] [ 288.212383][ T31] Kernel Offset: disabled [ 288.216774][ T31] Rebooting in 86400 seconds..