Warning: Permanently added '10.128.1.157' (ED25519) to the list of known hosts. executing program executing program executing program [ 55.087302][ T3559] [ 55.089702][ T3559] ====================================================== [ 55.096739][ T3559] WARNING: possible circular locking dependency detected [ 55.103745][ T3559] 6.1.90-syzkaller #0 Not tainted [ 55.108768][ T3559] ------------------------------------------------------ [ 55.115774][ T3559] syz-executor118/3559 is trying to acquire lock: [ 55.122201][ T3559] ffff88802738dc98 (&sighand->siglock){....}-{2:2}, at: __lock_task_sighand+0x145/0x2d0 [ 55.131957][ T3559] [ 55.131957][ T3559] but task is already holding lock: [ 55.139309][ T3559] ffff8880b9935e90 (lock#9){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 55.149582][ T3559] [ 55.149582][ T3559] which lock already depends on the new lock. [ 55.149582][ T3559] [ 55.159974][ T3559] [ 55.159974][ T3559] the existing dependency chain (in reverse order) is: [ 55.168976][ T3559] [ 55.168976][ T3559] -> #3 (lock#9){+.+.}-{2:2}: [ 55.175839][ T3559] lock_acquire+0x1f8/0x5a0 [ 55.180860][ T3559] __mmap_lock_do_trace_acquire_returned+0x9d/0x670 [ 55.187965][ T3559] stack_map_get_build_id_offset+0x99e/0x9c0 [ 55.194492][ T3559] __bpf_get_stack+0x495/0x570 [ 55.199781][ T3559] bpf_get_stack_raw_tp+0x1b2/0x220 [ 55.205505][ T3559] bpf_prog_ec3b2eefa702d8d3+0x3a/0x3e [ 55.211473][ T3559] bpf_trace_run2+0x1fd/0x410 [ 55.216662][ T3559] trace_tlb_flush+0x151/0x1a0 [ 55.221979][ T3559] switch_mm_irqs_off+0x84a/0xc20 [ 55.227518][ T3559] __schedule+0x1140/0x4550 [ 55.232554][ T3559] preempt_schedule_common+0x83/0xd0 [ 55.238353][ T3559] preempt_schedule+0xd9/0xe0 [ 55.243563][ T3559] preempt_schedule_thunk+0x16/0x18 [ 55.249284][ T3559] _raw_spin_unlock+0x36/0x40 [ 55.254478][ T3559] __text_poke+0x81a/0x9a0 [ 55.259427][ T3559] text_poke_bp_batch+0x153/0x940 [ 55.264974][ T3559] text_poke_finish+0x16/0x30 [ 55.270177][ T3559] arch_jump_label_transform_apply+0x13/0x20 [ 55.276753][ T3559] static_key_enable_cpuslocked+0x12e/0x250 [ 55.283160][ T3559] static_key_enable+0x16/0x20 [ 55.288443][ T3559] tracepoint_add_func+0x947/0x9d0 [ 55.294079][ T3559] tracepoint_probe_register_prio_may_exist+0x11e/0x190 [ 55.301523][ T3559] bpf_raw_tp_link_attach+0x456/0x6b0 [ 55.307405][ T3559] bpf_raw_tracepoint_open+0x196/0x210 [ 55.313388][ T3559] __sys_bpf+0x4a7/0x6c0 [ 55.318147][ T3559] __x64_sys_bpf+0x78/0x90 [ 55.323083][ T3559] do_syscall_64+0x3b/0xb0 [ 55.328019][ T3559] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 55.334438][ T3559] [ 55.334438][ T3559] -> #2 (&rq->__lock){-.-.}-{2:2}: [ 55.341731][ T3559] lock_acquire+0x1f8/0x5a0 [ 55.346762][ T3559] _raw_spin_lock_nested+0x2d/0x40 [ 55.352393][ T3559] raw_spin_rq_lock_nested+0x26/0x140 [ 55.358285][ T3559] task_fork_fair+0x5d/0x350 [ 55.363395][ T3559] sched_cgroup_fork+0x374/0x400 [ 55.368854][ T3559] copy_process+0x2442/0x4060 [ 55.374051][ T3559] kernel_clone+0x222/0x920 [ 55.379068][ T3559] user_mode_thread+0x12e/0x190 [ 55.384435][ T3559] rest_init+0x23/0x300 [ 55.389110][ T3559] start_kernel+0x0/0x53f [ 55.393966][ T3559] start_kernel+0x496/0x53f [ 55.398993][ T3559] secondary_startup_64_no_verify+0xcf/0xdb [ 55.405406][ T3559] [ 55.405406][ T3559] -> #1 (&p->pi_lock){-.-.}-{2:2}: [ 55.412694][ T3559] lock_acquire+0x1f8/0x5a0 [ 55.417711][ T3559] _raw_spin_lock_irqsave+0xd1/0x120 [ 55.423508][ T3559] try_to_wake_up+0xad/0x12e0 [ 55.428706][ T3559] complete_signal+0x796/0xbd0 [ 55.433999][ T3559] __send_signal_locked+0xb1a/0xdc0 [ 55.439714][ T3559] do_notify_parent+0xe2b/0x1100 [ 55.445187][ T3559] do_exit+0x172e/0x26a0 [ 55.449949][ T3559] do_group_exit+0x202/0x2b0 [ 55.455054][ T3559] __x64_sys_exit_group+0x3b/0x40 [ 55.460591][ T3559] do_syscall_64+0x3b/0xb0 [ 55.465521][ T3559] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 55.471930][ T3559] [ 55.471930][ T3559] -> #0 (&sighand->siglock){....}-{2:2}: [ 55.479827][ T3559] validate_chain+0x1661/0x5950 [ 55.485222][ T3559] __lock_acquire+0x125b/0x1f80 [ 55.490610][ T3559] lock_acquire+0x1f8/0x5a0 [ 55.495714][ T3559] _raw_spin_lock_irqsave+0xd1/0x120 [ 55.501514][ T3559] __lock_task_sighand+0x145/0x2d0 [ 55.507145][ T3559] group_send_sig_info+0x26c/0x300 [ 55.512771][ T3559] bpf_send_signal_common+0x2d8/0x420 [ 55.518656][ T3559] bpf_send_signal+0x15/0x20 [ 55.523763][ T3559] bpf_prog_da8cbe553dc44a71+0x1a/0x21 [ 55.529754][ T3559] bpf_trace_run4+0x253/0x470 [ 55.534956][ T3559] __mmap_lock_do_trace_acquire_returned+0x5e3/0x670 [ 55.542140][ T3559] lock_mm_and_find_vma+0x219/0x2e0 [ 55.547850][ T3559] exc_page_fault+0x169/0x660 [ 55.553035][ T3559] asm_exc_page_fault+0x22/0x30 [ 55.558399][ T3559] [ 55.558399][ T3559] other info that might help us debug this: [ 55.558399][ T3559] [ 55.568635][ T3559] Chain exists of: [ 55.568635][ T3559] &sighand->siglock --> &rq->__lock --> lock#9 [ 55.568635][ T3559] [ 55.580721][ T3559] Possible unsafe locking scenario: [ 55.580721][ T3559] [ 55.588165][ T3559] CPU0 CPU1 [ 55.593520][ T3559] ---- ---- [ 55.598874][ T3559] lock(lock#9); [ 55.602511][ T3559] lock(&rq->__lock); [ 55.609092][ T3559] lock(lock#9); [ 55.615251][ T3559] lock(&sighand->siglock); [ 55.619843][ T3559] [ 55.619843][ T3559] *** DEADLOCK *** [ 55.619843][ T3559] [ 55.627995][ T3559] 5 locks held by syz-executor118/3559: [ 55.633527][ T3559] #0: ffff88807d5b35d8 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x2e/0x2e0 [ 55.643439][ T3559] #1: ffff8880b9935e90 (lock#9){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 55.654136][ T3559] #2: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: get_mm_memcg_path+0xb1/0x600 [ 55.663705][ T3559] #3: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x16a/0x470 [ 55.673104][ T3559] #4: ffffffff8d12ac80 (rcu_read_lock){....}-{1:2}, at: __lock_task_sighand+0x25/0x2d0 [ 55.682857][ T3559] [ 55.682857][ T3559] stack backtrace: [ 55.688741][ T3559] CPU: 1 PID: 3559 Comm: syz-executor118 Not tainted 6.1.90-syzkaller #0 [ 55.697154][ T3559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 55.707213][ T3559] Call Trace: [ 55.710497][ T3559] [ 55.713465][ T3559] dump_stack_lvl+0x1e3/0x2cb [ 55.718167][ T3559] ? nf_tcp_handle_invalid+0x642/0x642 [ 55.723636][ T3559] ? print_circular_bug+0x12b/0x1a0 [ 55.728833][ T3559] check_noncircular+0x2fa/0x3b0 [ 55.733771][ T3559] ? add_chain_block+0x850/0x850 [ 55.738715][ T3559] ? lockdep_lock+0x11f/0x2a0 [ 55.743406][ T3559] ? noop_count+0x30/0x30 [ 55.747747][ T3559] ? mark_lock+0x9a/0x340 [ 55.752078][ T3559] ? _find_first_zero_bit+0xd0/0x100 [ 55.757361][ T3559] validate_chain+0x1661/0x5950 [ 55.762224][ T3559] ? lockdep_unlock+0x165/0x300 [ 55.767087][ T3559] ? reacquire_held_locks+0x660/0x660 [ 55.772460][ T3559] ? __bfs+0x359/0x6e0 [ 55.776526][ T3559] ? validate_chain+0x13ce/0x5950 [ 55.781546][ T3559] ? reacquire_held_locks+0x660/0x660 [ 55.786917][ T3559] ? reacquire_held_locks+0x660/0x660 [ 55.792292][ T3559] ? mark_lock+0x9a/0x340 [ 55.796618][ T3559] __lock_acquire+0x125b/0x1f80 [ 55.801473][ T3559] lock_acquire+0x1f8/0x5a0 [ 55.805980][ T3559] ? __lock_task_sighand+0x145/0x2d0 [ 55.811264][ T3559] ? read_lock_is_recursive+0x10/0x10 [ 55.816638][ T3559] ? read_lock_is_recursive+0x10/0x10 [ 55.822006][ T3559] ? _raw_spin_lock_irqsave+0xac/0x120 [ 55.827460][ T3559] _raw_spin_lock_irqsave+0xd1/0x120 [ 55.832742][ T3559] ? __lock_task_sighand+0x145/0x2d0 [ 55.838111][ T3559] ? _raw_spin_lock+0x40/0x40 [ 55.842784][ T3559] __lock_task_sighand+0x145/0x2d0 [ 55.847893][ T3559] ? __lock_task_sighand+0x25/0x2d0 [ 55.853120][ T3559] group_send_sig_info+0x26c/0x300 [ 55.858229][ T3559] ? lockdep_assert_task_sighand_held+0x2b0/0x2b0 [ 55.864640][ T3559] bpf_send_signal_common+0x2d8/0x420 [ 55.870005][ T3559] ? trace_bpf_trace_printk+0x250/0x250 [ 55.875551][ T3559] ? kernfs_path_from_node+0x234/0xb00 [ 55.881008][ T3559] ? bpf_trace_run4+0x16a/0x470 [ 55.885852][ T3559] bpf_send_signal+0x15/0x20 [ 55.890433][ T3559] bpf_prog_da8cbe553dc44a71+0x1a/0x21 [ 55.895880][ T3559] bpf_trace_run4+0x253/0x470 [ 55.900562][ T3559] ? asm_exc_int3+0x35/0x40 [ 55.905074][ T3559] ? bpf_trace_run3+0x440/0x440 [ 55.909924][ T3559] ? __mmap_lock_do_trace_acquire_returned+0x501/0x670 [ 55.916773][ T3559] __mmap_lock_do_trace_acquire_returned+0x5e3/0x670 [ 55.923449][ T3559] ? __mmap_lock_do_trace_acquire_returned+0x84/0x670 [ 55.930212][ T3559] lock_mm_and_find_vma+0x219/0x2e0 [ 55.935412][ T3559] exc_page_fault+0x169/0x660 [ 55.940091][ T3559] asm_exc_page_fault+0x22/0x30 [ 55.944950][ T3559] RIP: 0033:0x7f76614e879a [ 55.949363][ T3559] Code: 48 8d 3d ab a8 07 00 31 c0 e8 82 07 00 00 ba 12 00 00 00 bf 01 00 00 00 48 8d 35 ac a8 07 00 e8 3c 0a 03 00 31 c0 31 c9 31 d2 <89> 04 25 c4 00 00 20 31 f6 66 0f ef c0 bf 41 01 00 00 89 04 25 c8 [ 55.968986][ T3559] RSP: 002b:00007ffdf5765c70 EFLAGS: 00010246 [ 55.975058][ T3559] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 55.983022][ T3559] RDX: 0000000000000000 RSI: 00007f766156303b RDI: 0000000000000001 executing program executing program [ 55.991005][ T3559] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000 [ 55.998978][ T3559] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 [ 56.006947][ T3559] R13: 00007ffdf5765e88 R14: 00007ffdf5765c90 R15: 00007ffdf5765c80 [ 56.014935][ T3559] executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program