================================ WARNING: inconsistent lock state 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted -------------------------------- inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. syz-executor.4/6952 [HC0[0]:SC0[0]:HE0:SE1] takes: ffff8880b943e698 (&rq->__lock){?.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 {IN-HARDIRQ-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 raw_spin_rq_lock kernel/sched/sched.h:1385 [inline] rq_lock kernel/sched/sched.h:1699 [inline] scheduler_tick+0xa2/0x650 kernel/sched/core.c:5679 update_process_times+0x199/0x220 kernel/time/timer.c:2481 tick_periodic+0x7e/0x230 kernel/time/tick-common.c:100 tick_handle_periodic+0x45/0x120 kernel/time/tick-common.c:112 timer_interrupt+0x4e/0x80 arch/x86/kernel/time.c:57 __handle_irq_event_percpu+0x22c/0x750 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 handle_level_irq+0x25d/0x6f0 kernel/irq/chip.c:648 generic_handle_irq_desc include/linux/irqdesc.h:161 [inline] handle_irq arch/x86/kernel/irq.c:238 [inline] __common_interrupt+0xe1/0x250 arch/x86/kernel/irq.c:257 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 __setup_irq+0x1069/0x1e80 kernel/irq/manage.c:1818 request_threaded_irq+0x2b4/0x3e0 kernel/irq/manage.c:2202 request_irq include/linux/interrupt.h:168 [inline] setup_default_timer_irq arch/x86/kernel/time.c:70 [inline] hpet_time_init+0x5b/0x90 arch/x86/kernel/time.c:82 x86_late_time_init+0x51/0xc0 arch/x86/kernel/time.c:94 start_kernel+0x317/0x490 init/main.c:1039 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:509 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:490 common_startup_64+0x13e/0x148 irq event stamp: 1586 hardirqs last enabled at (1583): [] syscall_enter_from_user_mode include/linux/entry-common.h:197 [inline] hardirqs last enabled at (1583): [] do_syscall_64+0x91/0x260 arch/x86/entry/common.c:79 hardirqs last disabled at (1584): [] __schedule+0x2644/0x5c70 kernel/sched/core.c:6634 softirqs last enabled at (1586): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (1586): [] __sock_map_delete net/core/sock_map.c:424 [inline] softirqs last enabled at (1586): [] sock_map_delete_elem+0xfd/0x150 net/core/sock_map.c:446 softirqs last disabled at (1585): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (1585): [] __sock_map_delete net/core/sock_map.c:414 [inline] softirqs last disabled at (1585): [] sock_map_delete_elem+0xc8/0x150 net/core/sock_map.c:446 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock( &rq->__lock ); lock(&rq->__lock ); *** DEADLOCK *** 2 locks held by syz-executor.4/6952: #0: ffff8880b943e698 (&rq->__lock ){?.-.}-{2:2} , at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 #1: ffffffff8d7b08e0 (rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] , at: rcu_read_lock include/linux/rcupdate.h:750 [inline] , at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline] , at: bpf_trace_run4+0x107/0x460 kernel/trace/bpf_trace.c:2422 stack backtrace: CPU: 0 PID: 6952 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_usage_bug kernel/locking/lockdep.c:3971 [inline] valid_state kernel/locking/lockdep.c:4013 [inline] mark_lock_irq kernel/locking/lockdep.c:4216 [inline] mark_lock+0x923/0xc60 kernel/locking/lockdep.c:4678 mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4274 __trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline] lockdep_hardirqs_on_prepare+0x137/0x420 kernel/locking/lockdep.c:4359 trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61 __local_bh_enable_ip+0xa4/0x120 kernel/softirq.c:387 spin_unlock_bh include/linux/spinlock.h:396 [inline] __sock_map_delete net/core/sock_map.c:424 [inline] sock_map_delete_elem+0xfd/0x150 net/core/sock_map.c:446 ___bpf_prog_run+0x3e51/0xae80 kernel/bpf/core.c:1997 __bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline] __bpf_prog_run include/linux/filter.h:657 [inline] bpf_prog_run include/linux/filter.h:664 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline] bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422 __bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222 __traceiter_sched_switch+0x6c/0xc0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x2266/0x5c70 kernel/sched/core.c:6733 __schedule_loop kernel/sched/core.c:6813 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6828 futex_wait_queue+0xfc/0x1f0 kernel/futex/waitwake.c:370 __futex_wait+0x291/0x3c0 kernel/futex/waitwake.c:669 futex_wait+0xe9/0x380 kernel/futex/waitwake.c:697 do_futex+0x22b/0x350 kernel/futex/syscalls.c:102 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex kernel/futex/syscalls.c:160 [inline] __x64_sys_futex+0x1e1/0x4c0 kernel/futex/syscalls.c:160 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f53bac7de69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f53bba69178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f53badabf88 RCX: 00007f53bac7de69 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f53badabf88 RBP: 00007f53badabf80 R08: 00007f53bba696c0 R09: 00007f53bba696c0 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f53badabf8c R13: 000000000000000b R14: 00007ffe5f6dcbd0 R15: 00007ffe5f6dccb8