Warning: Permanently added '10.128.0.208' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 429.755581][ T31] INFO: task syz-executor253:8529 blocked for more than 143 seconds. [ 429.763714][ T31] Not tainted 6.15.0-rc2-syzkaller-00258-g750d0ac001e8 #0 [ 429.771706][ T31] Blocked by coredump. [ 429.776535][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.785317][ T31] task:syz-executor253 state:D stack:24424 pid:8529 tgid:8527 ppid:5850 task_flags:0x40054c flags:0x00004002 [ 429.797348][ T31] Call Trace: [ 429.800633][ T31] [ 429.803585][ T31] __schedule+0x1b88/0x5240 [ 429.808189][ T31] ? register_lock_class+0x54/0x330 [ 429.813431][ T31] ? schedule+0x163/0x360 [ 429.817825][ T31] ? __pfx___schedule+0x10/0x10 [ 429.822721][ T31] ? schedule+0x90/0x360 [ 429.827041][ T31] ? schedule+0x90/0x360 [ 429.831318][ T31] schedule+0x163/0x360 [ 429.835571][ T31] schedule_preempt_disabled+0x13/0x30 [ 429.841056][ T31] rwsem_down_write_slowpath+0xedd/0x1420 [ 429.846918][ T31] ? rwsem_down_write_slowpath+0xa17/0x1420 [ 429.852862][ T31] ? __pfx_rwsem_down_write_slowpath+0x10/0x10 [ 429.859075][ T31] ? __lock_acquire+0xad5/0xd80 [ 429.863981][ T31] down_write+0x1da/0x220 [ 429.868376][ T31] ? __pfx_down_write+0x10/0x10 [ 429.873268][ T31] exit_mmap+0x305/0xde0 [ 429.877581][ T31] ? uprobe_clear_state+0x20e/0x290 [ 429.882807][ T31] ? __pfx_exit_mmap+0x10/0x10 [ 429.887673][ T31] ? __pfx_exit_aio+0x10/0x10 [ 429.892421][ T31] ? uprobe_clear_state+0x271/0x290 [ 429.897689][ T31] ? mm_update_next_owner+0xa4/0x810 [ 429.903018][ T31] __mmput+0x115/0x420 [ 429.907192][ T31] exit_mm+0x221/0x310 [ 429.911300][ T31] ? __pfx_exit_mm+0x10/0x10 [ 429.915983][ T31] ? taskstats_exit+0x326/0xa60 [ 429.920871][ T31] do_exit+0x994/0x27f0 [ 429.925102][ T31] ? do_raw_spin_lock+0x151/0x370 [ 429.930159][ T31] ? __pfx_do_exit+0x10/0x10 [ 429.934753][ T31] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 429.940198][ T31] do_group_exit+0x207/0x2c0 [ 429.944812][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 429.950182][ T31] ? lockdep_hardirqs_on+0x9d/0x150 [ 429.955470][ T31] get_signal+0x1696/0x1730 [ 429.960036][ T31] ? __pfx_get_signal+0x10/0x10 [ 429.964990][ T31] arch_do_signal_or_restart+0x98/0x810 [ 429.970586][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 429.976846][ T31] ? syscall_exit_to_user_mode+0xa3/0x340 [ 429.982606][ T31] syscall_exit_to_user_mode+0xce/0x340 [ 429.988234][ T31] do_syscall_64+0x100/0x210 [ 429.992853][ T31] ? clear_bhb_loop+0x45/0xa0 [ 429.997590][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.003517][ T31] RIP: 0033:0x7f0e7faaa6e9 [ 430.008030][ T31] RSP: 002b:00007f0e7fa42218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 430.016514][ T31] RAX: fffffffffffffe00 RBX: 00007f0e7fb34338 RCX: 00007f0e7faaa6e9 [ 430.024517][ T31] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0e7fb34338 [ 430.032569][ T31] RBP: 00007f0e7fb34330 R08: 0000000000000000 R09: 0000000000000000 [ 430.040596][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0e7fb01074 [ 430.048646][ T31] R13: 0000200000000040 R14: 00002000000002c0 R15: 00002000000002c8 [ 430.056708][ T31] [ 430.059758][ T31] [ 430.059758][ T31] Showing all locks held in the system: [ 430.067580][ T31] 1 lock held by khungtaskd/31: [ 430.072447][ T31] #0: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x30/0x180 [ 430.082390][ T31] 2 locks held by dhcpcd/5506: [ 430.087273][ T31] #0: ffffffff8edf61b0 (dup_mmap_sem){.+.+}-{0:0}, at: copy_mm+0x1d6/0x22c0 [ 430.096191][ T31] #1: ffff88805a8a3de0 (&mm->mmap_lock){++++}-{4:4}, at: copy_mm+0x2a8/0x22c0 [ 430.105289][ T31] 2 locks held by getty/5594: [ 430.109967][ T31] #0: ffff8880319c50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.119774][ T31] #1: ffffc9000332e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x5bb/0x1700 [ 430.129984][ T31] 1 lock held by syz-executor253/8529: [ 430.135484][ T31] #0: ffff88807b09bde0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mmap+0x305/0xde0 [ 430.144598][ T31] 1 lock held by dhcpcd/8530: [ 430.149356][ T31] #0: ffff8880253947e0 (&mm->mmap_lock){++++}-{4:4}, at: __vm_munmap+0x213/0x520 [ 430.158671][ T31] [ 430.160996][ T31] ============================================= [ 430.160996][ T31] [ 430.169956][ T31] NMI backtrace for cpu 0 [ 430.169980][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc2-syzkaller-00258-g750d0ac001e8 #0 PREEMPT(full) [ 430.170003][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 430.170015][ T31] Call Trace: [ 430.170023][ T31] [ 430.170030][ T31] dump_stack_lvl+0x241/0x360 [ 430.170065][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.170095][ T31] ? __pfx__printk+0x10/0x10 [ 430.170132][ T31] nmi_cpu_backtrace+0x4ab/0x4e0 [ 430.170177][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.170204][ T31] ? _printk+0xd5/0x120 [ 430.170232][ T31] ? __wake_up_klogd+0xcc/0x110 [ 430.170258][ T31] ? __pfx__printk+0x10/0x10 [ 430.170290][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.170311][ T31] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 430.170339][ T31] watchdog+0x1058/0x10a0 [ 430.170363][ T31] ? watchdog+0x1ea/0x10a0 [ 430.170388][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.170411][ T31] kthread+0x7b7/0x940 [ 430.170431][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.170453][ T31] ? __pfx_kthread+0x10/0x10 [ 430.170470][ T31] ? __pfx_kthread+0x10/0x10 [ 430.170488][ T31] ? __pfx_kthread+0x10/0x10 [ 430.170506][ T31] ? __pfx_kthread+0x10/0x10 [ 430.170524][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.170547][ T31] ? lockdep_hardirqs_on+0x9d/0x150 [ 430.170564][ T31] ? __pfx_kthread+0x10/0x10 [ 430.170583][ T31] ret_from_fork+0x4b/0x80 [ 430.170598][ T31] ? __pfx_kthread+0x10/0x10 [ 430.170617][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.170645][ T31] [ 430.170655][ T31] Sending NMI from CPU 0 to CPUs 1: [ 430.331450][ C1] NMI backtrace for cpu 1 [ 430.331470][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.15.0-rc2-syzkaller-00258-g750d0ac001e8 #0 PREEMPT(full) [ 430.331489][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 430.331499][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 430.331522][ C1] Code: cc cc cc cc cc cc cc 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 73 8f 18 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 430.331535][ C1] RSP: 0018:ffffc90000197dc0 EFLAGS: 000002c2 [ 430.331550][ C1] RAX: 330d1d9510403d00 RBX: ffffffff8197272e RCX: ffffffff8c2fa93c [ 430.331562][ C1] RDX: 0000000000000001 RSI: ffffffff8e6499b7 RDI: ffffffff8ca1b5a0 [ 430.331574][ C1] RBP: ffffc90000197f20 R08: ffff8880b8732b5b R09: 1ffff110170e656b [ 430.331585][ C1] R10: dffffc0000000000 R11: ffffed10170e656c R12: 1ffff92000032fd2 [ 430.331597][ C1] R13: 1ffff11003ad9b40 R14: 0000000000000001 R15: dffffc0000000000 [ 430.331608][ C1] FS: 0000000000000000(0000) GS:ffff88812509a000(0000) knlGS:0000000000000000 [ 430.331621][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.331632][ C1] CR2: 00007f6b30e296c0 CR3: 000000000eb38000 CR4: 00000000003526f0 [ 430.331646][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 430.331655][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 430.331665][ C1] Call Trace: [ 430.331673][ C1] [ 430.331678][ C1] default_idle+0x13/0x20 [ 430.331698][ C1] default_idle_call+0x74/0xb0 [ 430.331718][ C1] do_idle+0x22e/0x5d0 [ 430.331738][ C1] ? __pfx_do_idle+0x10/0x10 [ 430.331762][ C1] cpu_startup_entry+0x42/0x60 [ 430.331777][ C1] start_secondary+0xfe/0x100 [ 430.331792][ C1] common_startup_64+0x13e/0x147 [ 430.331823][ C1] [ 430.341640][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.341663][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc2-syzkaller-00258-g750d0ac001e8 #0 PREEMPT(full) [ 430.341690][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 430.341704][ T31] Call Trace: [ 430.341713][ T31] [ 430.341723][ T31] dump_stack_lvl+0x241/0x360 [ 430.341764][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.341796][ T31] ? __pfx__printk+0x10/0x10 [ 430.341833][ T31] ? vscnprintf+0x5d/0x90 [ 430.341868][ T31] panic+0x349/0x880 [ 430.341897][ T31] ? __pfx_preempt_schedule+0x10/0x10 [ 430.341920][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 430.341953][ T31] ? __pfx_panic+0x10/0x10 [ 430.341987][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 430.342012][ T31] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 430.342042][ T31] ? nmi_trigger_cpumask_backtrace+0x2d4/0x320 [ 430.342083][ T31] ? nmi_trigger_cpumask_backtrace+0x2d9/0x320 [ 430.342119][ T31] watchdog+0x1097/0x10a0 [ 430.342149][ T31] ? watchdog+0x1ea/0x10a0 [ 430.342184][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.342212][ T31] kthread+0x7b7/0x940 [ 430.342241][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.342270][ T31] ? __pfx_kthread+0x10/0x10 [ 430.342293][ T31] ? __pfx_kthread+0x10/0x10 [ 430.342317][ T31] ? __pfx_kthread+0x10/0x10 [ 430.342342][ T31] ? __pfx_kthread+0x10/0x10 [ 430.342366][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.342396][ T31] ? lockdep_hardirqs_on+0x9d/0x150 [ 430.342418][ T31] ? __pfx_kthread+0x10/0x10 [ 430.342444][ T31] ret_from_fork+0x4b/0x80 [ 430.342466][ T31] ? __pfx_kthread+0x10/0x10 [ 430.342491][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.342528][ T31] [ 430.678787][ T31] Kernel Offset: disabled [ 430.683139][ T31] Rebooting in 86400 seconds..