Warning: Permanently added '10.128.1.147' (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 [ 79.078480][ T4763] [ 79.080877][ T4763] ====================================================== [ 79.087901][ T4763] WARNING: possible circular locking dependency detected [ 79.095026][ T4763] 6.10.0-rc4-syzkaller-00158-g31392048f55f #0 Not tainted [ 79.102154][ T4763] ------------------------------------------------------ [ 79.109188][ T4763] dhcpcd/4763 is trying to acquire lock: [ 79.114808][ T4763] ffff8880b95387e8 (lock#9){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 79.125104][ T4763] [ 79.125104][ T4763] but task is already holding lock: [ 79.132458][ T4763] ffff8880b953e798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 79.141949][ T4763] [ 79.141949][ T4763] which lock already depends on the new lock. [ 79.141949][ T4763] [ 79.152343][ T4763] [ 79.152343][ T4763] the existing dependency chain (in reverse order) is: [ 79.161345][ T4763] [ 79.161345][ T4763] -> #3 (&rq->__lock){-.-.}-{2:2}: [ 79.168725][ T4763] lock_acquire+0x1ed/0x550 [ 79.173758][ T4763] _raw_spin_lock_nested+0x31/0x40 [ 79.179391][ T4763] raw_spin_rq_lock_nested+0x2a/0x140 [ 79.185286][ T4763] task_fork_fair+0x61/0x1e0 [ 79.190417][ T4763] sched_cgroup_fork+0x37c/0x410 [ 79.195872][ T4763] copy_process+0x2217/0x3dc0 [ 79.201063][ T4763] kernel_clone+0x226/0x8f0 [ 79.206082][ T4763] user_mode_thread+0x132/0x1a0 [ 79.211459][ T4763] rest_init+0x23/0x300 [ 79.216146][ T4763] start_kernel+0x47a/0x500 [ 79.221190][ T4763] x86_64_start_reservations+0x2a/0x30 [ 79.227169][ T4763] x86_64_start_kernel+0x99/0xa0 [ 79.232645][ T4763] common_startup_64+0x13e/0x147 [ 79.238132][ T4763] [ 79.238132][ T4763] -> #2 (&p->pi_lock){-.-.}-{2:2}: [ 79.245425][ T4763] lock_acquire+0x1ed/0x550 [ 79.250460][ T4763] _raw_spin_lock_irqsave+0xd5/0x120 [ 79.256270][ T4763] try_to_wake_up+0xb0/0x1470 [ 79.261476][ T4763] signal_wake_up_state+0xb4/0x120 [ 79.267219][ T4763] complete_signal+0x94a/0xcf0 [ 79.272537][ T4763] __send_signal_locked+0xb1b/0xdc0 [ 79.278300][ T4763] do_notify_parent+0xd96/0x10a0 [ 79.283776][ T4763] do_exit+0x181d/0x27e0 [ 79.288561][ T4763] do_group_exit+0x207/0x2c0 [ 79.293678][ T4763] __x64_sys_exit_group+0x3f/0x40 [ 79.299225][ T4763] do_syscall_64+0xf3/0x230 [ 79.304272][ T4763] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.310718][ T4763] [ 79.310718][ T4763] -> #1 (&sighand->siglock){-...}-{2:2}: [ 79.318552][ T4763] lock_acquire+0x1ed/0x550 [ 79.323618][ T4763] _raw_spin_lock_irqsave+0xd5/0x120 [ 79.329443][ T4763] __lock_task_sighand+0x149/0x2d0 [ 79.335097][ T4763] group_send_sig_info+0x274/0x310 [ 79.340743][ T4763] bpf_send_signal_common+0x2dd/0x430 [ 79.346655][ T4763] bpf_send_signal_thread+0x16/0x20 [ 79.352392][ T4763] bpf_prog_7bb747c56a8bcba8+0x25/0x25 [ 79.358375][ T4763] bpf_trace_run4+0x334/0x590 [ 79.363579][ T4763] __mmap_lock_do_trace_acquire_returned+0x5c8/0x630 [ 79.370803][ T4763] lock_mm_and_find_vma+0x213/0x2f0 [ 79.376536][ T4763] exc_page_fault+0x1bf/0x8c0 [ 79.381746][ T4763] asm_exc_page_fault+0x26/0x30 [ 79.387122][ T4763] __put_user_8+0x11/0x20 [ 79.391988][ T4763] __rseq_handle_notify_resume+0x666/0x14e0 [ 79.398418][ T4763] syscall_exit_to_user_mode+0x114/0x370 [ 79.404579][ T4763] do_syscall_64+0x100/0x230 [ 79.409703][ T4763] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.416122][ T4763] [ 79.416122][ T4763] -> #0 (lock#9){+.+.}-{2:2}: [ 79.422993][ T4763] validate_chain+0x18e0/0x5900 [ 79.428371][ T4763] __lock_acquire+0x1346/0x1fd0 [ 79.433742][ T4763] lock_acquire+0x1ed/0x550 [ 79.438772][ T4763] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 [ 79.445907][ T4763] stack_map_get_build_id_offset+0x9af/0x9d0 [ 79.452418][ T4763] __bpf_get_stack+0x4ad/0x5a0 [ 79.457702][ T4763] bpf_get_stack_raw_tp+0x1a3/0x240 [ 79.463419][ T4763] bpf_prog_ec3b2eefa702d8d3+0x42/0x46 [ 79.469392][ T4763] bpf_trace_run2+0x2ec/0x540 [ 79.474592][ T4763] trace_tlb_flush+0x118/0x140 [ 79.479892][ T4763] switch_mm_irqs_off+0x7cb/0xae0 [ 79.485437][ T4763] __schedule+0x1066/0x4a20 [ 79.490464][ T4763] schedule+0x14b/0x320 [ 79.495132][ T4763] schedule_hrtimeout_range_clock+0x2a9/0x480 [ 79.501729][ T4763] do_sys_poll+0xe1d/0x1300 [ 79.506751][ T4763] __se_sys_ppoll+0x2a0/0x330 [ 79.511957][ T4763] do_syscall_64+0xf3/0x230 [ 79.516975][ T4763] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.523386][ T4763] [ 79.523386][ T4763] other info that might help us debug this: [ 79.523386][ T4763] [ 79.533613][ T4763] Chain exists of: [ 79.533613][ T4763] lock#9 --> &p->pi_lock --> &rq->__lock [ 79.533613][ T4763] [ 79.545174][ T4763] Possible unsafe locking scenario: [ 79.545174][ T4763] [ 79.552643][ T4763] CPU0 CPU1 [ 79.557994][ T4763] ---- ---- [ 79.563366][ T4763] lock(&rq->__lock); [ 79.567435][ T4763] lock(&p->pi_lock); [ 79.574034][ T4763] lock(&rq->__lock); [ 79.580633][ T4763] lock(lock#9); [ 79.584293][ T4763] [ 79.584293][ T4763] *** DEADLOCK *** [ 79.584293][ T4763] [ 79.592457][ T4763] 3 locks held by dhcpcd/4763: [ 79.597209][ T4763] #0: ffff8880b953e798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 79.607146][ T4763] #1: ffffffff8e333fa0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 [ 79.616544][ T4763] #2: ffff88801cec0198 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x237/0x9d0 [ 79.627348][ T4763] [ 79.627348][ T4763] stack backtrace: [ 79.633235][ T4763] CPU: 1 PID: 4763 Comm: dhcpcd Not tainted 6.10.0-rc4-syzkaller-00158-g31392048f55f #0 [ 79.643026][ T4763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 79.653090][ T4763] Call Trace: [ 79.656390][ T4763] [ 79.659339][ T4763] dump_stack_lvl+0x241/0x360 [ 79.664027][ T4763] ? __pfx_dump_stack_lvl+0x10/0x10 [ 79.669242][ T4763] ? print_circular_bug+0x130/0x1a0 [ 79.674448][ T4763] check_noncircular+0x36a/0x4a0 [ 79.679394][ T4763] ? __pfx_check_noncircular+0x10/0x10 [ 79.684947][ T4763] ? lockdep_lock+0x123/0x2b0 [ 79.689622][ T4763] ? rcu_is_watching+0x15/0xb0 [ 79.694387][ T4763] validate_chain+0x18e0/0x5900 [ 79.699247][ T4763] ? __pfx_validate_chain+0x10/0x10 [ 79.704439][ T4763] ? __pfx_validate_chain+0x10/0x10 [ 79.709651][ T4763] ? do_raw_spin_unlock+0x13c/0x8b0 [ 79.714856][ T4763] ? mark_lock+0x9a/0x350 [ 79.719183][ T4763] ? mark_lock+0x9a/0x350 [ 79.723525][ T4763] __lock_acquire+0x1346/0x1fd0 [ 79.728377][ T4763] lock_acquire+0x1ed/0x550 [ 79.732871][ T4763] ? __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 79.739635][ T4763] ? __pfx_lock_acquire+0x10/0x10 [ 79.744650][ T4763] ? validate_chain+0x11e/0x5900 [ 79.749596][ T4763] ? validate_chain+0x11e/0x5900 [ 79.754529][ T4763] ? down_read_trylock+0x24f/0x3c0 [ 79.759642][ T4763] ? stack_map_get_build_id_offset+0x237/0x9d0 [ 79.765793][ T4763] ? __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 79.772554][ T4763] __mmap_lock_do_trace_acquire_returned+0xa8/0x630 [ 79.779134][ T4763] ? __mmap_lock_do_trace_acquire_returned+0x8f/0x630 [ 79.785898][ T4763] stack_map_get_build_id_offset+0x9af/0x9d0 [ 79.791896][ T4763] ? __pfx_stack_map_get_build_id_offset+0x10/0x10 [ 79.798396][ T4763] __bpf_get_stack+0x4ad/0x5a0 [ 79.803173][ T4763] ? __pfx___bpf_get_stack+0x10/0x10 [ 79.808455][ T4763] ? __pfx___cant_migrate+0x10/0x10 [ 79.813652][ T4763] bpf_get_stack_raw_tp+0x1a3/0x240 [ 79.818848][ T4763] ? bpf_trace_run2+0x1fc/0x540 [ 79.823697][ T4763] bpf_prog_ec3b2eefa702d8d3+0x42/0x46 [ 79.829144][ T4763] bpf_trace_run2+0x2ec/0x540 [ 79.833824][ T4763] ? __pfx_bpf_trace_run2+0x10/0x10 [ 79.839027][ T4763] trace_tlb_flush+0x118/0x140 [ 79.843803][ T4763] switch_mm_irqs_off+0x7cb/0xae0 [ 79.848829][ T4763] ? __pfx_switch_mm_irqs_off+0x10/0x10 [ 79.854374][ T4763] __schedule+0x1066/0x4a20 [ 79.858882][ T4763] ? __pfx___schedule+0x10/0x10 [ 79.863722][ T4763] ? __pfx_lock_release+0x10/0x10 [ 79.868755][ T4763] ? _raw_spin_unlock_irqrestore+0x8f/0x140 [ 79.874666][ T4763] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 79.880593][ T4763] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 79.886921][ T4763] ? schedule+0x90/0x320 [ 79.891163][ T4763] schedule+0x14b/0x320 [ 79.895335][ T4763] schedule_hrtimeout_range_clock+0x2a9/0x480 [ 79.901419][ T4763] ? __pfx_schedule_hrtimeout_range_clock+0x10/0x10 [ 79.908021][ T4763] ? __pfx_hrtimer_wakeup+0x10/0x10 [ 79.913326][ T4763] ? sock_poll+0x350/0x410 [ 79.917753][ T4763] ? __might_fault+0xc6/0x120 [ 79.922427][ T4763] ? do_sys_poll+0xd83/0x1300 [ 79.927101][ T4763] do_sys_poll+0xe1d/0x1300 [ 79.931615][ T4763] ? __pfx_do_sys_poll+0x10/0x10 [ 79.936568][ T4763] ? __pfx_pollwake+0x10/0x10 [ 79.941262][ T4763] ? __pfx_pollwake+0x10/0x10 [ 79.945972][ T4763] ? __pfx_pollwake+0x10/0x10 [ 79.950655][ T4763] ? __pfx_pollwake+0x10/0x10 [ 79.955354][ T4763] ? _raw_spin_unlock_irq+0x23/0x50 [ 79.960555][ T4763] ? lockdep_hardirqs_on+0x99/0x150 [ 79.965838][ T4763] ? _raw_spin_unlock_irq+0x2e/0x50 [ 79.971076][ T4763] ? __pfx_set_user_sigmask+0x10/0x10 [ 79.976446][ T4763] __se_sys_ppoll+0x2a0/0x330 [ 79.981138][ T4763] ? __pfx___se_sys_ppoll+0x10/0x10 [ 79.986356][ T4763] ? __x64_sys_ppoll+0x20/0xc0 [ 79.991117][ T4763] do_syscall_64+0xf3/0x230 [ 79.995621][ T4763] ? clear_bhb_loop+0x35/0x90 [ 80.000588][ T4763] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 80.006554][ T4763] RIP: 0033:0x7f230c089ad5 [ 80.010991][ T4763] Code: Unable to access opcode bytes at 0x7f230c089aab. [ 80.018034][ T4763] RSP: 002b:00007ffe912a2990 EFLAGS: 00000246 ORIG_RAX: 000000000000010f executing program executing program [ 80.026446][ T4763] RAX: ffffffffffffffda RBX: 0000559800b6ee20 RCX: 00007f230c089ad5 [ 80.034426][ T4763] RDX: 00007ffe912a29b0 RSI: 0000000000000004 RDI: 0000559800b79b60 [ 80.042409][ T4763] RBP: 00007ffe912a2ce0 R08: 0000000000000008 R09: 7fffffffffffffff [ 80.050382][ T4763] R10: 00007ffe912a2ce0 R11: 0000000000000246 R12: 00007ffe912a29d8 [ 80.058365][ T4763] R13: 00005597c249f610 R14: 0000000000000000 R15: 0000000000000000 [ 80.066370][ T4763] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program