Warning: Permanently added '10.128.0.153' (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 [ 58.443472][ T3216] [ 58.445813][ T3216] ====================================================== [ 58.452806][ T3216] WARNING: possible circular locking dependency detected [ 58.459798][ T3216] 6.1.87-syzkaller #0 Not tainted [ 58.464794][ T3216] ------------------------------------------------------ [ 58.471792][ T3216] dhcpcd/3216 is trying to acquire lock: [ 58.477425][ T3216] ffff8880b9835e90 (lock#9){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 58.487745][ T3216] [ 58.487745][ T3216] but task is already holding lock: [ 58.495084][ T3216] ffff8880b983aa18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 [ 58.504545][ T3216] [ 58.504545][ T3216] which lock already depends on the new lock. [ 58.504545][ T3216] [ 58.514919][ T3216] [ 58.514919][ T3216] the existing dependency chain (in reverse order) is: [ 58.523909][ T3216] [ 58.523909][ T3216] -> #3 (&rq->__lock){-.-.}-{2:2}: [ 58.531182][ T3216] lock_acquire+0x1f8/0x5a0 [ 58.536188][ T3216] _raw_spin_lock_nested+0x2d/0x40 [ 58.541812][ T3216] raw_spin_rq_lock_nested+0x26/0x140 [ 58.547688][ T3216] task_fork_fair+0x5d/0x350 [ 58.552783][ T3216] sched_cgroup_fork+0x374/0x400 [ 58.558224][ T3216] copy_process+0x2442/0x4060 [ 58.563398][ T3216] kernel_clone+0x222/0x920 [ 58.568397][ T3216] user_mode_thread+0x12e/0x190 [ 58.573744][ T3216] rest_init+0x23/0x300 [ 58.578408][ T3216] start_kernel+0x0/0x53f [ 58.583239][ T3216] start_kernel+0x496/0x53f [ 58.588240][ T3216] secondary_startup_64_no_verify+0xcf/0xdb [ 58.594634][ T3216] [ 58.594634][ T3216] -> #2 (&p->pi_lock){-.-.}-{2:2}: [ 58.601905][ T3216] lock_acquire+0x1f8/0x5a0 [ 58.606911][ T3216] _raw_spin_lock_irqsave+0xd1/0x120 [ 58.612698][ T3216] try_to_wake_up+0xad/0x12e0 [ 58.617876][ T3216] complete_signal+0x796/0xbd0 [ 58.623145][ T3216] __send_signal_locked+0xb1a/0xdc0 [ 58.628853][ T3216] do_notify_parent+0xe2b/0x1100 [ 58.634313][ T3216] do_exit+0x172e/0x26a0 [ 58.639057][ T3216] do_group_exit+0x202/0x2b0 [ 58.644147][ T3216] __x64_sys_exit_group+0x3b/0x40 [ 58.649671][ T3216] do_syscall_64+0x3b/0xb0 [ 58.654589][ T3216] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 58.660985][ T3216] [ 58.660985][ T3216] -> #1 (&sighand->siglock){....}-{2:2}: [ 58.668775][ T3216] lock_acquire+0x1f8/0x5a0 [ 58.673791][ T3216] _raw_spin_lock_irqsave+0xd1/0x120 [ 58.679583][ T3216] __lock_task_sighand+0x145/0x2d0 [ 58.685197][ T3216] group_send_sig_info+0x26c/0x300 [ 58.690809][ T3216] bpf_send_signal_common+0x2d8/0x420 [ 58.696679][ T3216] bpf_send_signal+0x15/0x20 [ 58.701768][ T3216] 0xffffffffa000096e [ 58.706249][ T3216] bpf_trace_run4+0x253/0x470 [ 58.711434][ T3216] __mmap_lock_do_trace_acquire_returned+0x5e3/0x670 [ 58.718609][ T3216] lock_mm_and_find_vma+0x219/0x2e0 [ 58.724312][ T3216] exc_page_fault+0x169/0x660 [ 58.729489][ T3216] asm_exc_page_fault+0x22/0x30 [ 58.734849][ T3216] strncpy_from_user+0x159/0x360 [ 58.740286][ T3216] bpf_prog_load+0x188/0x1bb0 [ 58.745464][ T3216] __sys_bpf+0x382/0x6c0 [ 58.750230][ T3216] __x64_sys_bpf+0x78/0x90 [ 58.755162][ T3216] do_syscall_64+0x3b/0xb0 [ 58.760083][ T3216] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 58.766477][ T3216] [ 58.766477][ T3216] -> #0 (lock#9){+.+.}-{2:2}: [ 58.773316][ T3216] validate_chain+0x1661/0x5950 [ 58.778669][ T3216] __lock_acquire+0x125b/0x1f80 [ 58.784024][ T3216] lock_acquire+0x1f8/0x5a0 [ 58.789038][ T3216] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 [ 58.796125][ T3216] stack_map_get_build_id_offset+0x99e/0x9c0 [ 58.802620][ T3216] __bpf_get_stack+0x495/0x570 [ 58.807927][ T3216] bpf_get_stack_raw_tp+0x1b2/0x220 [ 58.813623][ T3216] bpf_prog_e6cf5f9c69743609+0x3a/0x3e [ 58.819582][ T3216] bpf_trace_run4+0x253/0x470 [ 58.824772][ T3216] __schedule+0x2116/0x4550 [ 58.829783][ T3216] schedule+0xbf/0x180 [ 58.834354][ T3216] schedule_hrtimeout_range_clock+0x2a4/0x480 [ 58.840920][ T3216] do_sys_poll+0xe1c/0x1330 [ 58.845929][ T3216] __se_sys_ppoll+0x29c/0x330 [ 58.851132][ T3216] do_syscall_64+0x3b/0xb0 [ 58.856053][ T3216] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 58.862446][ T3216] [ 58.862446][ T3216] other info that might help us debug this: [ 58.862446][ T3216] [ 58.872647][ T3216] Chain exists of: [ 58.872647][ T3216] lock#9 --> &p->pi_lock --> &rq->__lock [ 58.872647][ T3216] [ 58.884178][ T3216] Possible unsafe locking scenario: [ 58.884178][ T3216] [ 58.891603][ T3216] CPU0 CPU1 [ 58.896943][ T3216] ---- ---- [ 58.902284][ T3216] lock(&rq->__lock); [ 58.906331][ T3216] lock(&p->pi_lock); [ 58.912897][ T3216] lock(&rq->__lock); [ 58.919462][ T3216] lock(lock#9); [ 58.923079][ T3216] [ 58.923079][ T3216] *** DEADLOCK *** [ 58.923079][ T3216] [ 58.931199][ T3216] 3 locks held by dhcpcd/3216: [ 58.935956][ T3216] #0: ffff8880b983aa18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 [ 58.945870][ T3216] #1: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x16a/0x470 [ 58.955236][ T3216] #2: ffff88801874a6d8 (&mm->mmap_lock){++++}-{3:3}, at: stack_map_get_build_id_offset+0x232/0x9c0 [ 58.965993][ T3216] [ 58.965993][ T3216] stack backtrace: [ 58.971875][ T3216] CPU: 0 PID: 3216 Comm: dhcpcd Not tainted 6.1.87-syzkaller #0 [ 58.979481][ T3216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 58.989517][ T3216] Call Trace: [ 58.992777][ T3216] [ 58.995688][ T3216] dump_stack_lvl+0x1e3/0x2cb [ 59.000356][ T3216] ? nf_tcp_handle_invalid+0x642/0x642 [ 59.005806][ T3216] ? print_circular_bug+0x12b/0x1a0 [ 59.010994][ T3216] check_noncircular+0x2fa/0x3b0 [ 59.015917][ T3216] ? add_chain_block+0x850/0x850 [ 59.020831][ T3216] ? lockdep_lock+0x11f/0x2a0 [ 59.025490][ T3216] ? deref_stack_reg+0x17c/0x210 [ 59.030409][ T3216] validate_chain+0x1661/0x5950 [ 59.035248][ T3216] ? reacquire_held_locks+0x660/0x660 [ 59.040616][ T3216] ? reacquire_held_locks+0x660/0x660 [ 59.045972][ T3216] ? mark_lock+0x9a/0x340 [ 59.050287][ T3216] ? mark_lock+0x9a/0x340 [ 59.054603][ T3216] __lock_acquire+0x125b/0x1f80 [ 59.059440][ T3216] lock_acquire+0x1f8/0x5a0 [ 59.063933][ T3216] ? __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 59.070676][ T3216] ? read_lock_is_recursive+0x10/0x10 [ 59.076045][ T3216] ? down_read_trylock+0x24a/0x3b0 [ 59.081135][ T3216] ? stack_map_get_build_id_offset+0x232/0x9c0 [ 59.087269][ T3216] ? __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 59.094011][ T3216] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 [ 59.100574][ T3216] ? __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 59.107314][ T3216] stack_map_get_build_id_offset+0x99e/0x9c0 [ 59.113277][ T3216] ? __lock_acquire+0x125b/0x1f80 [ 59.118284][ T3216] ? __bpf_get_stackid+0x910/0x910 [ 59.123375][ T3216] __bpf_get_stack+0x495/0x570 [ 59.128119][ T3216] ? stack_map_get_build_id_offset+0x9c0/0x9c0 [ 59.134252][ T3216] ? __cant_sleep+0x270/0x270 [ 59.138908][ T3216] bpf_get_stack_raw_tp+0x1b2/0x220 [ 59.144085][ T3216] bpf_prog_e6cf5f9c69743609+0x3a/0x3e [ 59.149521][ T3216] ? bpf_trace_run4+0x16a/0x470 [ 59.154367][ T3216] bpf_trace_run4+0x253/0x470 [ 59.159025][ T3216] ? bpf_trace_run3+0x440/0x440 [ 59.163853][ T3216] ? psi_task_switch+0x43d/0x770 [ 59.168769][ T3216] __schedule+0x2116/0x4550 [ 59.173257][ T3216] ? schedule_hrtimeout_range_clock+0x272/0x480 [ 59.179481][ T3216] ? __sched_text_start+0x8/0x8 [ 59.184316][ T3216] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 59.190275][ T3216] ? _raw_spin_unlock+0x40/0x40 [ 59.195105][ T3216] schedule+0xbf/0x180 [ 59.199162][ T3216] schedule_hrtimeout_range_clock+0x2a4/0x480 [ 59.205217][ T3216] ? hrtimer_nanosleep_restart+0x420/0x420 [ 59.211004][ T3216] ? poll_initwait+0x150/0x150 [ 59.215747][ T3216] ? __remove_hrtimer+0x4b0/0x4b0 [ 59.220751][ T3216] ? sock_poll+0x34a/0x410 [ 59.225146][ T3216] ? do_sys_poll+0xd95/0x1330 [ 59.229800][ T3216] do_sys_poll+0xe1c/0x1330 [ 59.234289][ T3216] ? poll_select_finish+0x7b0/0x7b0 [ 59.239467][ T3216] ? __x64_compat_sys_ppoll_time64+0xc0/0xc0 [ 59.245426][ T3216] ? __x64_compat_sys_ppoll_time64+0xc0/0xc0 [ 59.251394][ T3216] ? __x64_compat_sys_ppoll_time64+0xc0/0xc0 [ 59.257364][ T3216] ? __x64_compat_sys_ppoll_time64+0xc0/0xc0 [ 59.263328][ T3216] ? do_raw_spin_unlock+0x137/0x8a0 [ 59.268515][ T3216] ? _raw_spin_unlock_irq+0x1f/0x40 [ 59.273692][ T3216] ? lockdep_hardirqs_on+0x94/0x130 [ 59.278868][ T3216] ? _raw_spin_unlock_irq+0x2a/0x40 [ 59.284061][ T3216] ? sigprocmask+0x280/0x280 [ 59.288645][ T3216] __se_sys_ppoll+0x29c/0x330 [ 59.293306][ T3216] ? __x64_sys_ppoll+0xc0/0xc0 [ 59.298049][ T3216] ? __x64_sys_ppoll+0x1c/0xc0 [ 59.302821][ T3216] do_syscall_64+0x3b/0xb0 [ 59.307223][ T3216] ? clear_bhb_loop+0x45/0xa0 [ 59.311898][ T3216] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 59.317785][ T3216] RIP: 0033:0x7f391315bad5 [ 59.322181][ T3216] Code: 85 d2 74 0d 0f 10 02 48 8d 54 24 20 0f 11 44 24 20 64 8b 04 25 18 00 00 00 85 c0 75 27 41 b8 08 00 00 00 b8 0f 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 75 48 8b 15 24 73 0d 00 f7 d8 64 89 02 48 83 executing program executing program [ 59.341781][ T3216] RSP: 002b:00007ffe794f2ea0 EFLAGS: 00000246 ORIG_RAX: 000000000000010f [ 59.350186][ T3216] RAX: ffffffffffffffda RBX: 000055cffd8eee20 RCX: 00007f391315bad5 [ 59.358146][ T3216] RDX: 00007ffe794f2ec0 RSI: 0000000000000004 RDI: 000055cffd8f9b60 [ 59.366105][ T3216] RBP: 00007ffe794f31f0 R08: 0000000000000008 R09: 0000000000000010 [ 59.374054][ T3216] R10: 00007ffe794f31f0 R11: 0000000000000246 R12: 00007ffe794f2ee8 [ 59.382006][ T3216] R13: 000055cffd3b9610 R14: 0000000000000000 R15: 0000000000000000 [ 59.389976][ T3216] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program