./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1293853852 <...> [ 91.954821][ T981] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.104' (ED25519) to the list of known hosts. execve("./syz-executor1293853852", ["./syz-executor1293853852"], 0x7ffc8e7b2340 /* 10 vars */) = 0 brk(NULL) = 0x555562bc6000 brk(0x555562bc6d40) = 0x555562bc6d40 arch_prctl(ARCH_SET_FS, 0x555562bc63c0) = 0 set_tid_address(0x555562bc6690) = 5854 set_robust_list(0x555562bc66a0, 24) = 0 rseq(0x555562bc6ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1293853852", 4096) = 28 getrandom("\xbc\xf7\x0b\x16\x22\x3e\x6d\x99", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555562bc6d40 brk(0x555562be7d40) = 0x555562be7d40 brk(0x555562be8000) = 0x555562be8000 mprotect(0x7f58b3f90000, 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, child_tidptr=0x555562bc6690) = 5855 ./strace-static-x86_64: Process 5855 attached [pid 5855] set_robust_list(0x555562bc66a0, 24) = 0 [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5855] setpgid(0, 0) = 0 [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5855] write(3, "1000", 4) = 4 [pid 5855] close(3) = 0 [pid 5855] write(1, "executing program\n", 18) = 18 executing program [pid 5855] futex(0x7f58b3f9630c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5855] rt_sigaction(SIGRT_1, {sa_handler=0x7f58b3f32220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f58b3f238a0}, NULL, 8) = 0 [pid 5855] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f58b3ea5000 [pid 5855] mprotect(0x7f58b3ea6000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5855] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5855] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58b3ec5990, parent_tid=0x7f58b3ec5990, exit_signal=0, stack=0x7f58b3ea5000, stack_size=0x20300, tls=0x7f58b3ec56c0}./strace-static-x86_64: Process 5856 attached [pid 5856] rseq(0x7f58b3ec5fe0, 0x20, 0, 0x53053053 [pid 5855] <... clone3 resumed> => {parent_tid=[5856]}, 88) = 5856 [pid 5856] <... rseq resumed>) = 0 [pid 5855] rt_sigprocmask(SIG_SETMASK, [], [pid 5856] set_robust_list(0x7f58b3ec59a0, 24 [pid 5855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5856] <... set_robust_list resumed>) = 0 [pid 5855] futex(0x7f58b3f96308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5856] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5855] <... futex resumed>) = 0 [pid 5856] mmap(0x200000000000, 11755520, PROT_READ|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0xb635773f04ebbee0, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS|MAP_POPULATE, -1, 0xf6d0f000 [pid 5855] futex(0x7f58b3f9630c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5855] futex(0x7f58b3f9631c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5856] <... mmap resumed>) = 0x200000000000 [pid 5855] <... mmap resumed>) = 0x7f58b3e84000 [pid 5856] futex(0x7f58b3f9630c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5856] futex(0x7f58b3f96308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5855] mprotect(0x7f58b3e85000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5855] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5855] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f58b3ea4990, parent_tid=0x7f58b3ea4990, exit_signal=0, stack=0x7f58b3e84000, stack_size=0x20300, tls=0x7f58b3ea46c0}./strace-static-x86_64: Process 5857 attached => {parent_tid=[5857]}, 88) = 5857 [pid 5857] rseq(0x7f58b3ea4fe0, 0x20, 0, 0x53053053) = 0 [pid 5857] set_robust_list(0x7f58b3ea49a0, 24 [pid 5855] rt_sigprocmask(SIG_SETMASK, [], [pid 5857] <... set_robust_list resumed>) = 0 [pid 5855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5857] rt_sigprocmask(SIG_SETMASK, [], [pid 5855] futex(0x7f58b3f96318, FUTEX_WAKE_PRIVATE, 1000000 [pid 5857] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5855] <... futex resumed>) = 0 [pid 5857] mremap(0x200000000000, 6291458, 6291458, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000a00000 [pid 5855] futex(0x7f58b3f9631c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5855] exit_group(0 [pid 5856] <... futex resumed>) = ? [pid 5855] <... exit_group resumed>) = ? [pid 5854] kill(-5855, SIGKILL) = 0 [pid 5854] kill(5855, SIGKILL) = 0 [pid 5854] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5854] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5854] getdents64(3, 0x555562bc7730 /* 2 entries */, 32768) = 48 [pid 5854] getdents64(3, 0x555562bc7730 /* 0 entries */, 32768) = 0 [pid 5854] close(3) = 0 [ 286.514333][ T31] INFO: task syz-executor129:5855 blocked for more than 143 seconds. [ 286.522521][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.530239][ T31] Blocked by coredump. [ 286.535472][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.544724][ T31] task:syz-executor129 state:D stack:26280 pid:5855 tgid:5855 ppid:5854 task_flags:0x40004c flags:0x00004002 [ 286.557588][ T31] Call Trace: [ 286.560903][ T31] [ 286.564321][ T31] __schedule+0x1737/0x4d30 [ 286.568929][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.574285][ T31] ? schedule+0x165/0x360 [ 286.578742][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.584023][ T31] ? __pfx___schedule+0x10/0x10 [ 286.588934][ T31] ? schedule+0x91/0x360 [ 286.593720][ T31] schedule+0x165/0x360 [ 286.598110][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.604010][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.609590][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.615833][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.621944][ T31] ? exit_mm+0xcc/0x2c0 [ 286.626536][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.631515][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.637256][ T31] down_read+0x98/0x2e0 [ 286.641456][ T31] exit_mm+0xcc/0x2c0 [ 286.645909][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.650553][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.656943][ T31] do_exit+0x648/0x2300 [ 286.661169][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.666214][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.671471][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.677188][ T31] do_group_exit+0x21c/0x2d0 [ 286.681831][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.687281][ T31] x64_sys_call+0x21f7/0x2200 [ 286.691994][ T31] do_syscall_64+0xfa/0x3b0 [ 286.697008][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.702257][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.708848][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.716780][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.722983][ T31] RIP: 0033:0x7f58b3f0a349 [ 286.727449][ T31] RSP: 002b:00007fffd4c9f618 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.736363][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f58b3f0a349 [ 286.744934][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.753339][ T31] RBP: 00007f58b3f962b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.761345][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f58b3f962b0 [ 286.770476][ T31] R13: 0000000000000000 R14: 00007f58b3f96e40 R15: 00007f58b3ed8160 [ 286.778841][ T31] [ 286.781950][ T31] INFO: task syz-executor129:5856 blocked for more than 143 seconds. [ 286.790369][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.798525][ T31] Blocked by coredump. [ 286.803442][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.812138][ T31] task:syz-executor129 state:D stack:25840 pid:5856 tgid:5855 ppid:5854 task_flags:0x40044c flags:0x00004002 [ 286.824572][ T31] Call Trace: [ 286.827882][ T31] [ 286.830851][ T31] __schedule+0x1737/0x4d30 [ 286.835934][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.840874][ T31] ? schedule+0x165/0x360 [ 286.845703][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.850596][ T31] ? __pfx___schedule+0x10/0x10 [ 286.855866][ T31] ? schedule+0x91/0x360 [ 286.860151][ T31] schedule+0x165/0x360 [ 286.864801][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.870301][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.876689][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.882458][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.889009][ T31] ? exit_mm+0xcc/0x2c0 [ 286.893486][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.898376][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.904098][ T31] down_read+0x98/0x2e0 [ 286.908292][ T31] exit_mm+0xcc/0x2c0 [ 286.912314][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.917476][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.922286][ T31] do_exit+0x648/0x2300 [ 286.926915][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.931985][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.937027][ T31] do_group_exit+0x21c/0x2d0 [ 286.941654][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.947355][ T31] get_signal+0x1286/0x1340 [ 286.951919][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 286.957969][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.963518][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.968761][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 286.975348][ T31] ? exit_to_user_mode_loop+0x40/0x110 [ 286.980844][ T31] exit_to_user_mode_loop+0x75/0x110 [ 286.987425][ T31] do_syscall_64+0x2bd/0x3b0 [ 286.992078][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.998982][ T31] ? __switch_to_asm+0x39/0x70 [ 287.004131][ T31] ? clear_bhb_loop+0x60/0xb0 [ 287.008946][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.015286][ T31] RIP: 0033:0x7f58b3f0c2e9 [ 287.019740][ T31] RSP: 002b:00007f58b3ec5228 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 287.028664][ T31] RAX: fffffffffffffe00 RBX: 00007f58b3f96308 RCX: 00007f58b3f0c2e9 [ 287.036930][ T31] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f58b3f96308 [ 287.045258][ T31] RBP: 00007f58b3f96300 R08: 00007f58b3ec56c0 R09: 00007f58b3ec56c0 [ 287.053560][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f58b3f9630c [ 287.061566][ T31] R13: 0000200000000000 R14: b635773f06ebbeed R15: 00007fffd4c9f598 [ 287.070040][ T31] [ 287.073590][ T31] [ 287.073590][ T31] Showing all locks held in the system: [ 287.081329][ T31] 1 lock held by khungtaskd/31: [ 287.086706][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 287.097759][ T31] 2 locks held by getty/5604: [ 287.102466][ T31] #0: ffff88814e1260a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.112793][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 287.123298][ T31] 1 lock held by syz-executor129/5855: [ 287.128790][ T31] #0: ffff88807da98ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.138041][ T31] 1 lock held by syz-executor129/5856: [ 287.143818][ T31] #0: ffff88807da98ca0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.152930][ T31] 2 locks held by syz-executor129/5857: [ 287.158552][ T31] [ 287.160891][ T31] ============================================= [ 287.160891][ T31] [ 287.170071][ T31] NMI backtrace for cpu 0 [ 287.170095][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.170117][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.170129][ T31] Call Trace: [ 287.170136][ T31] [ 287.170188][ T31] dump_stack_lvl+0x189/0x250 [ 287.170232][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.170266][ T31] ? __pfx__printk+0x10/0x10 [ 287.170314][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.170342][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.170376][ T31] ? __pfx__printk+0x10/0x10 [ 287.170426][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.170456][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.170501][ T31] watchdog+0xf93/0xfe0 [ 287.170538][ T31] ? watchdog+0x1de/0xfe0 [ 287.170566][ T31] kthread+0x70e/0x8a0 [ 287.170604][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.170625][ T31] ? __pfx_kthread+0x10/0x10 [ 287.170664][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.170696][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.170723][ T31] ? __pfx_kthread+0x10/0x10 [ 287.170753][ T31] ret_from_fork+0x3f9/0x770 [ 287.170781][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.170813][ T31] ? __switch_to_asm+0x39/0x70 [ 287.170830][ T31] ? __switch_to_asm+0x33/0x70 [ 287.170846][ T31] ? __pfx_kthread+0x10/0x10 [ 287.170877][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.170912][ T31] [ 287.170919][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.318971][ C1] NMI backtrace for cpu 1 [ 287.318988][ C1] CPU: 1 UID: 0 PID: 5857 Comm: syz-executor129 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.319008][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.319019][ C1] RIP: 0010:kasan_byte_accessible+0x16/0x30 [ 287.319044][ C1] Code: 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 07 <3c> 08 0f 92 c0 c3 cc cc cc cc cc 66 66 66 66 66 66 2e 0f 1f 84 00 [ 287.319057][ C1] RSP: 0018:ffffc900041b6698 EFLAGS: 00000a06 [ 287.319072][ C1] RAX: 0000000000000000 RBX: ffffffff817301b2 RCX: 95ecc8325a86ba00 [ 287.319084][ C1] RDX: 0000000000000000 RSI: ffffffff817301b2 RDI: 1ffffffff1ca7b14 [ 287.319095][ C1] RBP: ffffffff81730195 R08: 0000000000000000 R09: 0000000000000000 [ 287.319105][ C1] R10: ffffc900041b6878 R11: ffffffff81ac9660 R12: 0000000000000002 [ 287.319116][ C1] R13: ffffffff8e53d8a0 R14: ffffffff8e53d8a0 R15: 0000000000000000 [ 287.319127][ C1] FS: 00007f58b3ea46c0(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000 [ 287.319140][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.319151][ C1] CR2: 00007f2021af2700 CR3: 0000000076834000 CR4: 00000000003526f0 [ 287.319171][ C1] Call Trace: [ 287.319177][ C1] [ 287.319183][ C1] __kasan_check_byte+0x12/0x40 [ 287.319202][ C1] lock_acquire+0x8d/0x360 [ 287.319224][ C1] ? unwind_next_frame+0xa5/0x2390 [ 287.319245][ C1] ? do_syscall_64+0xfa/0x3b0 [ 287.319270][ C1] ? unwind_next_frame+0xa5/0x2390 [ 287.319291][ C1] unwind_next_frame+0xc2/0x2390 [ 287.319311][ C1] ? unwind_next_frame+0xa5/0x2390 [ 287.319335][ C1] ? unwind_next_frame+0xa5/0x2390 [ 287.319356][ C1] ? __se_sys_mremap+0xa0b/0xef0 [ 287.319381][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 287.319406][ C1] arch_stack_walk+0x11c/0x150 [ 287.319432][ C1] ? do_syscall_64+0xfa/0x3b0 [ 287.319458][ C1] stack_trace_save+0x9c/0xe0 [ 287.319481][ C1] ? __pfx_stack_trace_save+0x10/0x10 [ 287.319506][ C1] ? stack_trace_save+0x9c/0xe0 [ 287.319532][ C1] kasan_save_stack+0x3e/0x60 [ 287.319546][ C1] ? kasan_save_stack+0x3e/0x60 [ 287.319560][ C1] ? kasan_record_aux_stack+0xbd/0xd0 [ 287.319581][ C1] ? call_rcu+0x157/0x9c0 [ 287.319601][ C1] ? mas_wr_store_entry+0x1f1b/0x25b0 [ 287.319621][ C1] ? mas_store_prealloc+0xb00/0xf60 [ 287.319640][ C1] ? vma_complete+0x224/0xae0 [ 287.319662][ C1] ? __split_vma+0x8a6/0xa00 [ 287.319675][ C1] ? vms_gather_munmap_vmas+0x4ab/0x12b0 [ 287.319697][ C1] ? do_vmi_align_munmap+0x25d/0x420 [ 287.319719][ C1] ? do_vmi_munmap+0x253/0x2e0 [ 287.319758][ C1] ? do_munmap+0xe1/0x140 [ 287.319774][ C1] ? mremap_to+0x2df/0x7a0 [ 287.319808][ C1] ? __se_sys_mremap+0xa0b/0xef0 [ 287.319829][ C1] ? do_syscall_64+0xfa/0x3b0 [ 287.319874][ C1] kasan_record_aux_stack+0xbd/0xd0 [ 287.319896][ C1] ? __pfx_mt_free_rcu+0x10/0x10 [ 287.319910][ C1] call_rcu+0x157/0x9c0 [ 287.319947][ C1] ? call_rcu+0x6ff/0x9c0 [ 287.319968][ C1] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.319995][ C1] ? __pfx_call_rcu+0x10/0x10 [ 287.320017][ C1] ? mas_replace_node+0x472/0x7b0 [ 287.320037][ C1] mas_wr_store_entry+0x1f1b/0x25b0 [ 287.320083][ C1] ? __pfx_mas_wr_store_entry+0x10/0x10 [ 287.320103][ C1] ? is_bpf_text_address+0x292/0x2b0 [ 287.320123][ C1] ? is_bpf_text_address+0x26/0x2b0 [ 287.320144][ C1] ? kernel_text_address+0xa5/0xe0 [ 287.320166][ C1] ? __kernel_text_address+0xd/0x40 [ 287.320181][ C1] ? unwind_get_return_address+0x4d/0x90 [ 287.320202][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 287.320242][ C1] ? arch_stack_walk+0xfc/0x150 [ 287.320271][ C1] ? stack_trace_save+0x9c/0xe0 [ 287.320297][ C1] ? stack_depot_save_flags+0x40/0x900 [ 287.320319][ C1] ? is_bpf_text_address+0x26/0x2b0 [ 287.320342][ C1] ? kasan_save_track+0x4f/0x80 [ 287.320356][ C1] ? kasan_save_track+0x3e/0x80 [ 287.320370][ C1] ? __kasan_slab_alloc+0x6c/0x80 [ 287.320386][ C1] ? kmem_cache_alloc_noprof+0x1c1/0x3c0 [ 287.320402][ C1] ? mas_alloc_nodes+0x2e9/0x8e0 [ 287.320425][ C1] ? mas_preallocate+0x3ad/0x6f0 [ 287.320444][ C1] ? __split_vma+0x2fa/0xa00 [ 287.320458][ C1] ? vms_gather_munmap_vmas+0x4ab/0x12b0 [ 287.320481][ C1] ? do_vmi_align_munmap+0x25d/0x420 [ 287.320503][ C1] ? do_vmi_munmap+0x253/0x2e0 [ 287.320525][ C1] ? do_munmap+0xe1/0x140 [ 287.320541][ C1] ? mremap_to+0x2df/0x7a0 [ 287.320563][ C1] ? __se_sys_mremap+0xa0b/0xef0 [ 287.320585][ C1] ? do_syscall_64+0xfa/0x3b0 [ 287.320620][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.320660][ C1] ? trace_ma_write+0x87/0x1f0 [ 287.320680][ C1] mas_store_prealloc+0xb00/0xf60 [ 287.320706][ C1] ? __pfx_mas_store_prealloc+0x10/0x10 [ 287.320733][ C1] ? vma_iter_store_overwrite+0x340/0x8e0 [ 287.320752][ C1] vma_complete+0x224/0xae0 [ 287.320775][ C1] ? vma_prepare+0x485/0x4b0 [ 287.320796][ C1] ? vma_adjust_trans_huge+0x286/0x370 [ 287.320819][ C1] __split_vma+0x8a6/0xa00 [ 287.320838][ C1] ? __pfx___split_vma+0x10/0x10 [ 287.320858][ C1] ? mas_find+0xb0e/0xd30 [ 287.320882][ C1] vms_gather_munmap_vmas+0x4ab/0x12b0 [ 287.320915][ C1] ? __pfx_vms_gather_munmap_vmas+0x10/0x10 [ 287.320942][ C1] ? move_page_tables+0x57a/0x1f50 [ 287.320965][ C1] ? __pfx_copy_vma+0x10/0x10 [ 287.320992][ C1] do_vmi_align_munmap+0x25d/0x420 [ 287.321024][ C1] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 287.321062][ C1] do_vmi_munmap+0x253/0x2e0 [ 287.321088][ C1] do_munmap+0xe1/0x140 [ 287.321106][ C1] ? __pfx_do_munmap+0x10/0x10 [ 287.321127][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.321142][ C1] ? security_mmap_addr+0x71/0x270 [ 287.321172][ C1] mremap_to+0x2df/0x7a0 [ 287.321216][ C1] ? __pfx_mremap_to+0x10/0x10 [ 287.321242][ C1] ? check_prep_vma+0x740/0xae0 [ 287.321272][ C1] __se_sys_mremap+0xa0b/0xef0 [ 287.321306][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.321344][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 287.321370][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 287.321394][ C1] do_syscall_64+0xfa/0x3b0 [ 287.321419][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.321435][ C1] ? __switch_to_asm+0x39/0x70 [ 287.321449][ C1] ? clear_bhb_loop+0x60/0xb0 [ 287.321467][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.321483][ C1] RIP: 0033:0x7f58b3f0c2e9 [ 287.321496][ C1] 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 [ 287.321509][ C1] RSP: 002b:00007f58b3ea4228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.321525][ C1] RAX: ffffffffffffffda RBX: 00007f58b3f96318 RCX: 00007f58b3f0c2e9 [ 287.321536][ C1] RDX: 0000000000600002 RSI: 0000000000600002 RDI: 0000200000000000 [ 287.321547][ C1] RBP: 00007f58b3f96310 R08: 0000200000a00000 R09: 00007f58b3ea46c0 [ 287.321558][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 00007f58b3f9631c [ 287.321568][ C1] R13: 0000200000000000 R14: b635773f06ebbeed R15: 00007fffd4c9f598 [ 287.321588][ C1] [ 287.321596][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.625 msecs [ 288.018599][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 288.025469][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 288.036771][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 288.046854][ T31] Call Trace: [ 288.050149][ T31] [ 288.053103][ T31] dump_stack_lvl+0x99/0x250 [ 288.057735][ T31] ? __asan_memcpy+0x40/0x70 [ 288.062358][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 288.067589][ T31] ? __pfx__printk+0x10/0x10 [ 288.072223][ T31] vpanic+0x281/0x750 [ 288.076237][ T31] ? __pfx_vpanic+0x10/0x10 [ 288.080771][ T31] ? preempt_schedule+0xae/0xc0 [ 288.085652][ T31] ? preempt_schedule_common+0x83/0xd0 [ 288.091149][ T31] panic+0xb9/0xc0 [ 288.094898][ T31] ? __pfx_panic+0x10/0x10 [ 288.099352][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 288.104843][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 288.111028][ T31] watchdog+0xfd2/0xfe0 [ 288.115242][ T31] ? watchdog+0x1de/0xfe0 [ 288.119604][ T31] kthread+0x70e/0x8a0 [ 288.123711][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.128408][ T31] ? __pfx_kthread+0x10/0x10 [ 288.133028][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 288.138255][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 288.143486][ T31] ? __pfx_kthread+0x10/0x10 [ 288.148111][ T31] ret_from_fork+0x3f9/0x770 [ 288.152735][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.157876][ T31] ? __switch_to_asm+0x39/0x70 [ 288.162659][ T31] ? __switch_to_asm+0x33/0x70 [ 288.167438][ T31] ? __pfx_kthread+0x10/0x10 [ 288.172064][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.176866][ T31] [ 288.180240][ T31] Kernel Offset: disabled [ 288.184605][ T31] Rebooting in 86400 seconds..