Warning: Permanently added '10.128.1.234' (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 [ 65.072190][ T4762] [ 65.074575][ T4762] ====================================================== [ 65.081578][ T4762] WARNING: possible circular locking dependency detected [ 65.088584][ T4762] 6.10.0-rc2-syzkaller-00758-gf6afdaf72af7 #0 Not tainted [ 65.095679][ T4762] ------------------------------------------------------ [ 65.102689][ T4762] dhcpcd/4762 is trying to acquire lock: [ 65.108307][ T4762] ffff8880b94387e8 (lock#9){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 65.118584][ T4762] [ 65.118584][ T4762] but task is already holding lock: [ 65.125933][ T4762] ffff8880b943e798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 65.135478][ T4762] [ 65.135478][ T4762] which lock already depends on the new lock. [ 65.135478][ T4762] [ 65.145858][ T4762] [ 65.145858][ T4762] the existing dependency chain (in reverse order) is: [ 65.154861][ T4762] [ 65.154861][ T4762] -> #3 (&rq->__lock){-.-.}-{2:2}: [ 65.162154][ T4762] lock_acquire+0x1ed/0x550 [ 65.167178][ T4762] _raw_spin_lock_nested+0x31/0x40 [ 65.172800][ T4762] raw_spin_rq_lock_nested+0x2a/0x140 [ 65.178674][ T4762] task_fork_fair+0x61/0x1e0 [ 65.183780][ T4762] sched_cgroup_fork+0x37c/0x410 [ 65.189219][ T4762] copy_process+0x2217/0x3dc0 [ 65.194415][ T4762] kernel_clone+0x226/0x8f0 [ 65.199441][ T4762] user_mode_thread+0x132/0x1a0 [ 65.204826][ T4762] rest_init+0x23/0x300 [ 65.209570][ T4762] start_kernel+0x47a/0x500 [ 65.214582][ T4762] x86_64_start_reservations+0x2a/0x30 [ 65.220556][ T4762] x86_64_start_kernel+0x99/0xa0 [ 65.225996][ T4762] common_startup_64+0x13e/0x147 [ 65.231437][ T4762] [ 65.231437][ T4762] -> #2 (&p->pi_lock){-.-.}-{2:2}: [ 65.238709][ T4762] lock_acquire+0x1ed/0x550 [ 65.243713][ T4762] _raw_spin_lock_irqsave+0xd5/0x120 [ 65.249510][ T4762] try_to_wake_up+0xb0/0x1470 [ 65.254712][ T4762] signal_wake_up_state+0xb4/0x120 [ 65.260325][ T4762] complete_signal+0x94a/0xcf0 [ 65.265593][ T4762] __send_signal_locked+0xb1b/0xdc0 [ 65.271294][ T4762] do_notify_parent+0xd96/0x10a0 [ 65.276753][ T4762] do_exit+0x181d/0x27e0 [ 65.281519][ T4762] do_group_exit+0x207/0x2c0 [ 65.286625][ T4762] __x64_sys_exit_group+0x3f/0x40 [ 65.292153][ T4762] do_syscall_64+0xf3/0x230 [ 65.297157][ T4762] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 65.303547][ T4762] [ 65.303547][ T4762] -> #1 (&sighand->siglock){-...}-{2:2}: [ 65.311341][ T4762] lock_acquire+0x1ed/0x550 [ 65.316344][ T4762] _raw_spin_lock_irqsave+0xd5/0x120 [ 65.322131][ T4762] __lock_task_sighand+0x149/0x2d0 [ 65.327769][ T4762] group_send_sig_info+0x274/0x310 [ 65.333400][ T4762] bpf_send_signal_common+0x2dd/0x430 [ 65.339271][ T4762] bpf_send_signal_thread+0x16/0x20 [ 65.344973][ T4762] 0xffffffffa000071a [ 65.349464][ T4762] bpf_trace_run4+0x334/0x590 [ 65.354640][ T4762] __mmap_lock_do_trace_acquire_returned+0x5c8/0x630 [ 65.361916][ T4762] lock_mm_and_find_vma+0x213/0x2f0 [ 65.367627][ T4762] exc_page_fault+0x1bf/0x8c0 [ 65.372807][ T4762] asm_exc_page_fault+0x26/0x30 [ 65.378160][ T4762] __put_user_8+0x11/0x20 [ 65.382992][ T4762] __rseq_handle_notify_resume+0x666/0x14e0 [ 65.389387][ T4762] syscall_exit_to_user_mode+0x114/0x370 [ 65.395516][ T4762] do_syscall_64+0x100/0x230 [ 65.400622][ T4762] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 65.407015][ T4762] [ 65.407015][ T4762] -> #0 (lock#9){+.+.}-{2:2}: [ 65.413861][ T4762] validate_chain+0x18e0/0x5900 [ 65.419217][ T4762] __lock_acquire+0x1346/0x1fd0 [ 65.424599][ T4762] lock_acquire+0x1ed/0x550 [ 65.429605][ T4762] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 [ 65.436777][ T4762] stack_map_get_build_id_offset+0x9af/0x9d0 [ 65.443276][ T4762] __bpf_get_stack+0x4ad/0x5a0 [ 65.448557][ T4762] bpf_get_stack_raw_tp+0x1a3/0x240 [ 65.454260][ T4762] bpf_prog_ec3b2eefa702d8d3+0x42/0x46 [ 65.460218][ T4762] bpf_trace_run2+0x2ec/0x540 [ 65.465414][ T4762] trace_tlb_flush+0x118/0x140 [ 65.470704][ T4762] switch_mm_irqs_off+0x7cb/0xae0 [ 65.476230][ T4762] __schedule+0x1066/0x4a20 [ 65.481238][ T4762] schedule+0x14b/0x320 [ 65.485898][ T4762] schedule_hrtimeout_range_clock+0x2a9/0x480 [ 65.492465][ T4762] do_sys_poll+0xe1d/0x1300 [ 65.497480][ T4762] __se_sys_ppoll+0x2a0/0x330 [ 65.502660][ T4762] do_syscall_64+0xf3/0x230 [ 65.507661][ T4762] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 65.514076][ T4762] [ 65.514076][ T4762] other info that might help us debug this: [ 65.514076][ T4762] [ 65.524282][ T4762] Chain exists of: [ 65.524282][ T4762] lock#9 --> &p->pi_lock --> &rq->__lock [ 65.524282][ T4762] [ 65.535836][ T4762] Possible unsafe locking scenario: [ 65.535836][ T4762] [ 65.543278][ T4762] CPU0 CPU1 [ 65.548626][ T4762] ---- ---- [ 65.554091][ T4762] lock(&rq->__lock); [ 65.558151][ T4762] lock(&p->pi_lock); [ 65.564724][ T4762] lock(&rq->__lock); [ 65.571294][ T4762] lock(lock#9); [ 65.574912][ T4762] [ 65.574912][ T4762] *** DEADLOCK *** [ 65.574912][ T4762] [ 65.583055][ T4762] 3 locks held by dhcpcd/4762: [ 65.587791][ T4762] #0: ffff8880b943e798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 65.597784][ T4762] #1: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 [ 65.607169][ T4762] #2: ffff88801bac8b18 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x237/0x9d0 [ 65.617947][ T4762] [ 65.617947][ T4762] stack backtrace: [ 65.623821][ T4762] CPU: 0 PID: 4762 Comm: dhcpcd Not tainted 6.10.0-rc2-syzkaller-00758-gf6afdaf72af7 #0 [ 65.633598][ T4762] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 65.643818][ T4762] Call Trace: [ 65.647081][ T4762] [ 65.649996][ T4762] dump_stack_lvl+0x241/0x360 [ 65.654684][ T4762] ? __pfx_dump_stack_lvl+0x10/0x10 [ 65.659886][ T4762] ? print_circular_bug+0x130/0x1a0 [ 65.665083][ T4762] check_noncircular+0x36a/0x4a0 [ 65.670048][ T4762] ? __pfx_check_noncircular+0x10/0x10 [ 65.675488][ T4762] ? lockdep_lock+0x123/0x2b0 [ 65.680147][ T4762] validate_chain+0x18e0/0x5900 [ 65.684982][ T4762] ? __pfx_validate_chain+0x10/0x10 [ 65.690179][ T4762] ? validate_chain+0x11e/0x5900 [ 65.695108][ T4762] ? __pfx_validate_chain+0x10/0x10 [ 65.700290][ T4762] ? validate_chain+0x11e/0x5900 [ 65.705216][ T4762] ? mark_lock+0x9a/0x350 [ 65.709545][ T4762] ? mark_lock+0x9a/0x350 [ 65.713859][ T4762] __lock_acquire+0x1346/0x1fd0 [ 65.718712][ T4762] lock_acquire+0x1ed/0x550 [ 65.723195][ T4762] ? __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 65.729940][ T4762] ? __pfx_lock_acquire+0x10/0x10 [ 65.734945][ T4762] ? validate_chain+0x11e/0x5900 [ 65.739943][ T4762] ? validate_chain+0x11e/0x5900 [ 65.744878][ T4762] ? down_read_trylock+0x24f/0x3c0 [ 65.749974][ T4762] ? stack_map_get_build_id_offset+0x237/0x9d0 [ 65.756113][ T4762] ? __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 65.762859][ T4762] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 [ 65.769430][ T4762] ? __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 65.776173][ T4762] stack_map_get_build_id_offset+0x9af/0x9d0 [ 65.782138][ T4762] ? __pfx_stack_map_get_build_id_offset+0x10/0x10 [ 65.788636][ T4762] __bpf_get_stack+0x4ad/0x5a0 [ 65.793400][ T4762] ? __pfx___bpf_get_stack+0x10/0x10 [ 65.798669][ T4762] ? __pfx___cant_migrate+0x10/0x10 [ 65.803864][ T4762] bpf_get_stack_raw_tp+0x1a3/0x240 [ 65.809053][ T4762] ? bpf_trace_run2+0x1fc/0x540 [ 65.813902][ T4762] bpf_prog_ec3b2eefa702d8d3+0x42/0x46 [ 65.819344][ T4762] bpf_trace_run2+0x2ec/0x540 [ 65.824034][ T4762] ? __pfx_bpf_trace_run2+0x10/0x10 [ 65.829220][ T4762] trace_tlb_flush+0x118/0x140 [ 65.833967][ T4762] switch_mm_irqs_off+0x7cb/0xae0 [ 65.839018][ T4762] ? __pfx_switch_mm_irqs_off+0x10/0x10 [ 65.844554][ T4762] __schedule+0x1066/0x4a20 [ 65.849048][ T4762] ? __pfx___schedule+0x10/0x10 [ 65.853882][ T4762] ? __pfx_lock_release+0x10/0x10 [ 65.859002][ T4762] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 65.864889][ T4762] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 65.870763][ T4762] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 65.877074][ T4762] ? schedule+0x90/0x320 [ 65.881297][ T4762] schedule+0x14b/0x320 [ 65.885437][ T4762] schedule_hrtimeout_range_clock+0x2a9/0x480 [ 65.891486][ T4762] ? __pfx_schedule_hrtimeout_range_clock+0x10/0x10 [ 65.898059][ T4762] ? __pfx_hrtimer_wakeup+0x10/0x10 [ 65.903240][ T4762] ? sock_poll+0x350/0x410 [ 65.907638][ T4762] ? __might_fault+0xc6/0x120 [ 65.912303][ T4762] ? do_sys_poll+0xd83/0x1300 [ 65.916964][ T4762] do_sys_poll+0xe1d/0x1300 [ 65.921560][ T4762] ? __pfx_do_sys_poll+0x10/0x10 [ 65.926480][ T4762] ? __pfx_pollwake+0x10/0x10 [ 65.931139][ T4762] ? __pfx_pollwake+0x10/0x10 [ 65.935801][ T4762] ? __pfx_pollwake+0x10/0x10 [ 65.940549][ T4762] ? __pfx_pollwake+0x10/0x10 [ 65.945217][ T4762] ? _raw_spin_unlock_irq+0x23/0x50 [ 65.950400][ T4762] ? lockdep_hardirqs_on+0x99/0x150 [ 65.955586][ T4762] ? _raw_spin_unlock_irq+0x2e/0x50 [ 65.960771][ T4762] ? __pfx_set_user_sigmask+0x10/0x10 [ 65.966139][ T4762] __se_sys_ppoll+0x2a0/0x330 [ 65.970818][ T4762] ? __pfx___se_sys_ppoll+0x10/0x10 [ 65.976020][ T4762] ? __x64_sys_ppoll+0x20/0xc0 [ 65.980851][ T4762] do_syscall_64+0xf3/0x230 [ 65.985354][ T4762] ? clear_bhb_loop+0x35/0x90 [ 65.990100][ T4762] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 65.995986][ T4762] RIP: 0033:0x7f9f40d43ad5 [ 66.000398][ T4762] Code: Unable to access opcode bytes at 0x7f9f40d43aab. [ 66.007411][ T4762] RSP: 002b:00007ffeaaed92a0 EFLAGS: 00000246 ORIG_RAX: 000000000000010f [ 66.015890][ T4762] RAX: ffffffffffffffda RBX: 000055e29b896e20 RCX: 00007f9f40d43ad5 executing program executing program [ 66.023861][ T4762] RDX: 00007ffeaaed92c0 RSI: 0000000000000004 RDI: 000055e29b8a1b60 [ 66.031852][ T4762] RBP: 00007ffeaaed95f0 R08: 0000000000000008 R09: 7fffffffffffffff [ 66.039807][ T4762] R10: 00007ffeaaed95f0 R11: 0000000000000246 R12: 00007ffeaaed92e8 [ 66.047762][ T4762] R13: 000055e2671f2610 R14: 0000000000000000 R15: 0000000000000000 [ 66.055723][ T4762] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program