./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor959488609 <...> Warning: Permanently added '10.128.0.94' (ED25519) to the list of known hosts. execve("./syz-executor959488609", ["./syz-executor959488609"], 0x7ffc758b6fb0 /* 10 vars */) = 0 brk(NULL) = 0x5555555c3000 brk(0x5555555c3d40) = 0x5555555c3d40 arch_prctl(ARCH_SET_FS, 0x5555555c33c0) = 0 set_tid_address(0x5555555c3690) = 5852 set_robust_list(0x5555555c36a0, 24) = 0 rseq(0x5555555c3ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor959488609", 4096) = 27 getrandom("\x6c\x5a\x4c\x2a\xcf\x0c\xbe\xf2", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555555c3d40 brk(0x5555555e4d40) = 0x5555555e4d40 brk(0x5555555e5000) = 0x5555555e5000 mprotect(0x7f7d2b84e000, 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 5853 attached [pid 5853] set_robust_list(0x5555555c36a0, 24 [pid 5852] <... clone resumed>, child_tidptr=0x5555555c3690) = 5853 [pid 5853] <... set_robust_list resumed>) = 0 [pid 5853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5853] setpgid(0, 0) = 0 [pid 5853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5853] write(3, "1000", 4) = 4 [pid 5853] close(3) = 0 [pid 5853] write(1, "executing program\n", 18executing program ) = 18 [pid 5853] futex(0x7f7d2b85430c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5853] rt_sigaction(SIGRT_1, {sa_handler=0x7f7d2b7f0220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f7d2b7e18a0}, NULL, 8) = 0 [pid 5853] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5853] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f7d2b763000 [pid 5853] mprotect(0x7f7d2b764000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5853] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5853] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f7d2b783990, parent_tid=0x7f7d2b783990, exit_signal=0, stack=0x7f7d2b763000, stack_size=0x20300, tls=0x7f7d2b7836c0}./strace-static-x86_64: Process 5854 attached => {parent_tid=[5854]}, 88) = 5854 [pid 5854] rseq(0x7f7d2b783fe0, 0x20, 0, 0x53053053) = 0 [pid 5853] rt_sigprocmask(SIG_SETMASK, [], [pid 5854] set_robust_list(0x7f7d2b7839a0, 24 [pid 5853] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5854] <... set_robust_list resumed>) = 0 [pid 5854] rt_sigprocmask(SIG_SETMASK, [], [pid 5853] futex(0x7f7d2b854308, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5853] futex(0x7f7d2b85430c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5854] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5854] mmap(0x200000000000, 11755520, PROT_READ|PROT_EXEC|PROT_SEM|PROT_GROWSUP|0xb635773f04ebbee0, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS|MAP_POPULATE, -1, 0xf6d0f000 [pid 5853] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5853] futex(0x7f7d2b85431c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5853] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5854] <... mmap resumed>) = 0x200000000000 [pid 5853] <... mmap resumed>) = 0x7f7d2b742000 [pid 5853] mprotect(0x7f7d2b743000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5854] futex(0x7f7d2b85430c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5853] rt_sigprocmask(SIG_BLOCK, ~[], [pid 5854] futex(0x7f7d2b854308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5853] <... rt_sigprocmask resumed>[], 8) = 0 [pid 5853] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f7d2b762990, parent_tid=0x7f7d2b762990, exit_signal=0, stack=0x7f7d2b742000, stack_size=0x20300, tls=0x7f7d2b7626c0}./strace-static-x86_64: Process 5855 attached => {parent_tid=[5855]}, 88) = 5855 [pid 5855] rseq(0x7f7d2b762fe0, 0x20, 0, 0x53053053 [pid 5853] rt_sigprocmask(SIG_SETMASK, [], [pid 5855] <... rseq resumed>) = 0 [pid 5853] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5855] set_robust_list(0x7f7d2b7629a0, 24 [pid 5853] futex(0x7f7d2b854318, FUTEX_WAKE_PRIVATE, 1000000 [pid 5855] <... set_robust_list resumed>) = 0 [pid 5855] rt_sigprocmask(SIG_SETMASK, [], [pid 5853] <... futex resumed>) = 0 [pid 5855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5853] futex(0x7f7d2b85431c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5855] mremap(0x200000000000, 6291458, 6291458, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000a00000 [pid 5853] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5853] exit_group(0 [pid 5854] <... futex resumed>) = ? [pid 5853] <... exit_group resumed>) = ? [ 91.986498][ T1215] cfg80211: failed to load regulatory.db [pid 5852] kill(-5853, SIGKILL) = 0 [pid 5852] kill(5853, SIGKILL) = 0 [pid 5852] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5852] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5852] getdents64(3, 0x5555555c4730 /* 2 entries */, 32768) = 48 [pid 5852] getdents64(3, 0x5555555c4730 /* 0 entries */, 32768) = 0 [pid 5852] close(3) = 0 [ 286.536106][ T31] INFO: task syz-executor959:5853 blocked for more than 143 seconds. [ 286.544236][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.551889][ T31] Blocked by coredump. [ 286.556779][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.565783][ T31] task:syz-executor959 state:D stack:26920 pid:5853 tgid:5853 ppid:5852 task_flags:0x40004c flags:0x00004002 [ 286.578114][ T31] Call Trace: [ 286.581608][ T31] [ 286.584582][ T31] __schedule+0x1737/0x4d30 [ 286.589851][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.595536][ T31] ? schedule+0x165/0x360 [ 286.599908][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.605270][ T31] ? __pfx___schedule+0x10/0x10 [ 286.610262][ T31] ? schedule+0x91/0x360 [ 286.615053][ T31] schedule+0x165/0x360 [ 286.619247][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.625306][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.630901][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.637074][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.643175][ T31] ? exit_mm+0xcc/0x2c0 [ 286.647847][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.652738][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.658400][ T31] down_read+0x98/0x2e0 [ 286.662676][ T31] exit_mm+0xcc/0x2c0 [ 286.667142][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.671810][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.677024][ T31] do_exit+0x648/0x2300 [ 286.681230][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.686301][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.691657][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.697227][ T31] do_group_exit+0x21c/0x2d0 [ 286.701940][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.708546][ T31] x64_sys_call+0x21f7/0x2200 [ 286.713263][ T31] do_syscall_64+0xfa/0x3b0 [ 286.718193][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.723428][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.729983][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.734963][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.740882][ T31] RIP: 0033:0x7f7d2b7c8349 [ 286.745761][ T31] RSP: 002b:00007ffe3aaacb08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.754213][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7d2b7c8349 [ 286.762644][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.771067][ T31] RBP: 00007f7d2b8542b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.779366][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7d2b8542b0 [ 286.787981][ T31] R13: 0000000000000000 R14: 00007f7d2b854e40 R15: 00007f7d2b796160 [ 286.796246][ T31] [ 286.799349][ T31] INFO: task syz-executor959:5854 blocked for more than 143 seconds. [ 286.807871][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.816022][ T31] Blocked by coredump. [ 286.820630][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.829765][ T31] task:syz-executor959 state:D stack:26024 pid:5854 tgid:5853 ppid:5852 task_flags:0x40044c flags:0x00004002 [ 286.842075][ T31] Call Trace: [ 286.845633][ T31] [ 286.848597][ T31] __schedule+0x1737/0x4d30 [ 286.853154][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.858586][ T31] ? schedule+0x165/0x360 [ 286.862948][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.868235][ T31] ? __pfx___schedule+0x10/0x10 [ 286.873136][ T31] ? schedule+0x91/0x360 [ 286.877778][ T31] schedule+0x165/0x360 [ 286.881977][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.887847][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.893419][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.899693][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.906058][ T31] ? exit_mm+0xcc/0x2c0 [ 286.910251][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.915520][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.920760][ T31] down_read+0x98/0x2e0 [ 286.925838][ T31] exit_mm+0xcc/0x2c0 [ 286.929860][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.934486][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.939846][ T31] do_exit+0x648/0x2300 [ 286.944135][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.949875][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.954946][ T31] do_group_exit+0x21c/0x2d0 [ 286.959565][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.965603][ T31] get_signal+0x1286/0x1340 [ 286.970312][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 286.976457][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.981708][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.987459][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 286.995277][ T31] ? exit_to_user_mode_loop+0x40/0x110 [ 287.000820][ T31] exit_to_user_mode_loop+0x75/0x110 [ 287.006599][ T31] do_syscall_64+0x2bd/0x3b0 [ 287.011233][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.018021][ T31] ? __switch_to_asm+0x39/0x70 [ 287.022816][ T31] ? clear_bhb_loop+0x60/0xb0 [ 287.028000][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.033932][ T31] RIP: 0033:0x7f7d2b7ca2e9 [ 287.039565][ T31] RSP: 002b:00007f7d2b783228 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 287.048430][ T31] RAX: fffffffffffffe00 RBX: 00007f7d2b854308 RCX: 00007f7d2b7ca2e9 [ 287.056807][ T31] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f7d2b854308 [ 287.065071][ T31] RBP: 00007f7d2b854300 R08: 00007f7d2b7836c0 R09: 00007f7d2b7836c0 [ 287.073247][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7d2b85430c [ 287.081710][ T31] R13: 0000200000000000 R14: b635773f06ebbeed R15: 00007ffe3aaaca88 [ 287.090003][ T31] [ 287.093090][ T31] [ 287.093090][ T31] Showing all locks held in the system: [ 287.101361][ T31] 2 locks held by ksoftirqd/0/15: [ 287.106692][ T31] 1 lock held by khungtaskd/31: [ 287.111557][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 287.121936][ T31] 2 locks held by getty/5610: [ 287.126904][ T31] #0: ffff8880338460a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.137020][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 287.150834][ T31] 1 lock held by syz-executor959/5853: [ 287.156630][ T31] #0: ffff888078fab7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.165774][ T31] 1 lock held by syz-executor959/5854: [ 287.171249][ T31] #0: ffff888078fab7a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 287.180558][ T31] 1 lock held by syz-executor959/5855: [ 287.186352][ T31] [ 287.188696][ T31] ============================================= [ 287.188696][ T31] [ 287.206106][ T31] NMI backtrace for cpu 1 [ 287.206122][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.206143][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.206154][ T31] Call Trace: [ 287.206161][ T31] [ 287.206169][ T31] dump_stack_lvl+0x189/0x250 [ 287.206204][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.206231][ T31] ? __pfx__printk+0x10/0x10 [ 287.206271][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.206299][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.206325][ T31] ? __pfx__printk+0x10/0x10 [ 287.206356][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.206381][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.206408][ T31] watchdog+0xf93/0xfe0 [ 287.206434][ T31] ? watchdog+0x1de/0xfe0 [ 287.206460][ T31] kthread+0x70e/0x8a0 [ 287.206503][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.206522][ T31] ? __pfx_kthread+0x10/0x10 [ 287.206551][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.206576][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.206600][ T31] ? __pfx_kthread+0x10/0x10 [ 287.206629][ T31] ret_from_fork+0x3f9/0x770 [ 287.206655][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.206685][ T31] ? __switch_to_asm+0x39/0x70 [ 287.206701][ T31] ? __switch_to_asm+0x33/0x70 [ 287.206716][ T31] ? __pfx_kthread+0x10/0x10 [ 287.206743][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.206777][ T31] [ 287.206784][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.357618][ C0] NMI backtrace for cpu 0 [ 287.357637][ C0] CPU: 0 UID: 0 PID: 5855 Comm: syz-executor959 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.357655][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.357663][ C0] RIP: 0010:mark_lock+0x2d/0x190 [ 287.357687][ C0] Code: 41 56 41 55 41 54 53 8b 46 20 89 c1 81 e1 00 00 03 00 83 f9 01 bb 09 00 00 00 83 db 00 83 fa 08 0f 45 da bd 01 00 00 00 89 d9 e5 25 ff 1f 00 00 48 0f a3 05 74 30 51 12 73 10 48 69 c0 c8 00 [ 287.357699][ C0] RSP: 0018:ffffc90003f96650 EFLAGS: 00000046 [ 287.357714][ C0] RAX: 0000000000020007 RBX: 0000000000000009 RCX: 0000000000000009 [ 287.357724][ C0] RDX: 0000000000000008 RSI: ffff88802aa94740 RDI: ffff88802aa93c00 [ 287.357734][ C0] RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff81730195 [ 287.357751][ C0] R10: ffffc90003f968d8 R11: ffffffff81ac9660 R12: 0000000000000004 [ 287.357761][ C0] R13: 0000000000000001 R14: ffff88802aa94740 R15: ffff88802aa94760 [ 287.357771][ C0] FS: 00007f7d2b7626c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 287.357784][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.357795][ C0] CR2: 000056545f3ab168 CR3: 0000000074782000 CR4: 00000000003526f0 [ 287.357810][ C0] Call Trace: [ 287.357816][ C0] [ 287.357824][ C0] __lock_acquire+0x6a8/0xd20 [ 287.357843][ C0] ? unwind_next_frame+0xa5/0x2390 [ 287.357862][ C0] lock_acquire+0x120/0x360 [ 287.357877][ C0] ? unwind_next_frame+0xa5/0x2390 [ 287.357897][ C0] ? unwind_next_frame+0xa5/0x2390 [ 287.357914][ C0] ? commit_merge+0x5fc/0x700 [ 287.357933][ C0] ? unwind_next_frame+0xa5/0x2390 [ 287.357950][ C0] unwind_next_frame+0xc2/0x2390 [ 287.357968][ C0] ? unwind_next_frame+0xa5/0x2390 [ 287.357987][ C0] ? unwind_next_frame+0xa5/0x2390 [ 287.358004][ C0] ? mas_store_prealloc+0xb00/0xf60 [ 287.358024][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 287.358045][ C0] arch_stack_walk+0x11c/0x150 [ 287.358066][ C0] ? commit_merge+0x5fc/0x700 [ 287.358086][ C0] stack_trace_save+0x9c/0xe0 [ 287.358105][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 287.358125][ C0] ? kasan_save_stack+0x4d/0x60 [ 287.358139][ C0] ? kasan_save_stack+0x3e/0x60 [ 287.358152][ C0] ? kasan_record_aux_stack+0xbd/0xd0 [ 287.358169][ C0] ? call_rcu+0x157/0x9c0 [ 287.358186][ C0] ? mas_wr_store_entry+0x1f1b/0x25b0 [ 287.358205][ C0] kasan_save_stack+0x3e/0x60 [ 287.358218][ C0] ? kasan_save_stack+0x3e/0x60 [ 287.358231][ C0] ? kasan_record_aux_stack+0xbd/0xd0 [ 287.358249][ C0] ? call_rcu+0x157/0x9c0 [ 287.358265][ C0] ? mas_wr_store_entry+0x1f1b/0x25b0 [ 287.358282][ C0] ? mas_store_prealloc+0xb00/0xf60 [ 287.358298][ C0] ? commit_merge+0x5fc/0x700 [ 287.358333][ C0] kasan_record_aux_stack+0xbd/0xd0 [ 287.358351][ C0] ? __pfx_mt_free_rcu+0x10/0x10 [ 287.358364][ C0] call_rcu+0x157/0x9c0 [ 287.358382][ C0] ? __lock_acquire+0xab9/0xd20 [ 287.358400][ C0] ? __pfx_call_rcu+0x10/0x10 [ 287.358418][ C0] ? mas_replace_node+0x472/0x7b0 [ 287.358435][ C0] mas_wr_store_entry+0x1f1b/0x25b0 [ 287.358462][ C0] ? __pfx_mas_wr_store_entry+0x10/0x10 [ 287.358479][ C0] ? unwind_get_return_address+0x4d/0x90 [ 287.358496][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 287.358516][ C0] ? arch_stack_walk+0xfc/0x150 [ 287.358539][ C0] ? stack_trace_save+0x9c/0xe0 [ 287.358559][ C0] ? stack_depot_save_flags+0x40/0x900 [ 287.358580][ C0] ? kasan_save_track+0x4f/0x80 [ 287.358593][ C0] ? kasan_save_track+0x3e/0x80 [ 287.358606][ C0] ? __kasan_slab_alloc+0x6c/0x80 [ 287.358620][ C0] ? kmem_cache_alloc_noprof+0x1c1/0x3c0 [ 287.358634][ C0] ? mas_alloc_nodes+0x2e9/0x8e0 [ 287.358652][ C0] ? mas_preallocate+0x3ad/0x6f0 [ 287.358668][ C0] ? commit_merge+0x1fd/0x700 [ 287.358685][ C0] ? vma_expand+0x40c/0x7e0 [ 287.358702][ C0] ? vma_merge_new_range+0x6a3/0x860 [ 287.358720][ C0] ? copy_vma+0x489/0x940 [ 287.358738][ C0] ? move_vma+0x81f/0x1840 [ 287.358763][ C0] ? mremap_to+0x6d6/0x7a0 [ 287.358780][ C0] ? __se_sys_mremap+0xa0b/0xef0 [ 287.358798][ C0] ? do_syscall_64+0xfa/0x3b0 [ 287.358817][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.358853][ C0] ? trace_ma_write+0x87/0x1f0 [ 287.358870][ C0] mas_store_prealloc+0xb00/0xf60 [ 287.358891][ C0] ? __pfx_mas_store_prealloc+0x10/0x10 [ 287.358908][ C0] ? down_write+0x162/0x1f0 [ 287.358926][ C0] ? vma_prepare+0x485/0x4b0 [ 287.358945][ C0] commit_merge+0x5fc/0x700 [ 287.358967][ C0] ? __pfx_commit_merge+0x10/0x10 [ 287.358992][ C0] vma_expand+0x40c/0x7e0 [ 287.359012][ C0] vma_merge_new_range+0x6a3/0x860 [ 287.359036][ C0] copy_vma+0x489/0x940 [ 287.359058][ C0] ? __pfx_copy_vma+0x10/0x10 [ 287.359080][ C0] ? do_vmi_align_munmap+0x358/0x420 [ 287.359108][ C0] move_vma+0x81f/0x1840 [ 287.359129][ C0] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 287.359151][ C0] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 287.359170][ C0] ? __pfx_move_vma+0x10/0x10 [ 287.359191][ C0] ? mm_get_unmapped_area+0xa7/0xd0 [ 287.359210][ C0] ? cap_mmap_addr+0xb0/0x100 [ 287.359227][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.359241][ C0] ? security_mmap_addr+0x71/0x270 [ 287.359261][ C0] mremap_to+0x6d6/0x7a0 [ 287.359283][ C0] ? __pfx_mremap_to+0x10/0x10 [ 287.359304][ C0] ? check_prep_vma+0x740/0xae0 [ 287.359327][ C0] __se_sys_mremap+0xa0b/0xef0 [ 287.359353][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.359375][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 287.359397][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 287.359416][ C0] do_syscall_64+0xfa/0x3b0 [ 287.359436][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.359449][ C0] ? __switch_to_asm+0x39/0x70 [ 287.359462][ C0] ? clear_bhb_loop+0x60/0xb0 [ 287.359479][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.359492][ C0] RIP: 0033:0x7f7d2b7ca2e9 [ 287.359505][ 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 [ 287.359516][ C0] RSP: 002b:00007f7d2b762228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.359532][ C0] RAX: ffffffffffffffda RBX: 00007f7d2b854318 RCX: 00007f7d2b7ca2e9 [ 287.359542][ C0] RDX: 0000000000600002 RSI: 0000000000600002 RDI: 0000200000000000 [ 287.359566][ C0] RBP: 00007f7d2b854310 R08: 0000200000a00000 R09: 00007f7d2b7626c0 [ 287.359576][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00007f7d2b85431c [ 287.359586][ C0] R13: 0000200000000000 R14: b635773f06ebbeed R15: 00007ffe3aaaca88 [ 287.359603][ C0] [ 287.359609][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.992 msecs [ 287.361437][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 288.019330][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 288.030619][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 288.040700][ T31] Call Trace: [ 288.044007][ T31] [ 288.046951][ T31] dump_stack_lvl+0x99/0x250 [ 288.051553][ T31] ? __asan_memcpy+0x40/0x70 [ 288.056241][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 288.061444][ T31] ? __pfx__printk+0x10/0x10 [ 288.066051][ T31] vpanic+0x281/0x750 [ 288.070046][ T31] ? __pfx_vpanic+0x10/0x10 [ 288.074548][ T31] ? preempt_schedule+0xae/0xc0 [ 288.079495][ T31] ? preempt_schedule_common+0x83/0xd0 [ 288.084965][ T31] panic+0xb9/0xc0 [ 288.088770][ T31] ? __pfx_panic+0x10/0x10 [ 288.093190][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 288.098572][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 288.104730][ T31] watchdog+0xfd2/0xfe0 [ 288.108890][ T31] ? watchdog+0x1de/0xfe0 [ 288.113224][ T31] kthread+0x70e/0x8a0 [ 288.117307][ T31] ? __pfx_watchdog+0x10/0x10 [ 288.121986][ T31] ? __pfx_kthread+0x10/0x10 [ 288.126583][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 288.131788][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 288.136996][ T31] ? __pfx_kthread+0x10/0x10 [ 288.141591][ T31] ret_from_fork+0x3f9/0x770 [ 288.146187][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 288.151308][ T31] ? __switch_to_asm+0x39/0x70 [ 288.156067][ T31] ? __switch_to_asm+0x33/0x70 [ 288.160827][ T31] ? __pfx_kthread+0x10/0x10 [ 288.165422][ T31] ret_from_fork_asm+0x1a/0x30 [ 288.170199][ T31] [ 288.173361][ T31] Kernel Offset: disabled [ 288.177677][ T31] Rebooting in 86400 seconds..