------------[ cut here ]------------ ================================ WARNING: CPU: 2 PID: 0 at kernel/softirq.c:362 __local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:362 WARNING: inconsistent lock state Modules linked in: 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 Not tainted CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 -------------------------------- inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. swapper/0/0 [HC0[0]:SC0[0]:HE0:SE1] takes: ffff88802c23e718 (&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+0x1b1/0x560 kernel/locking/lockdep.c:5719 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 RIP: 0010:__local_bh_enable_ip+0xc3/0x120 kernel/softirq.c:362 raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 Code: 00 e8 21 56 0b 00 e8 bc 54 42 00 fb 65 8b 05 9c fd b0 7e 85 c0 74 52 5b 5d c3 cc cc cc cc 65 8b 05 9e b1 af 7e 85 c0 75 9e 90 <0f> 0b 90 eb 98 e8 c3 52 42 00 eb 99 48 89 ef e8 09 cf 19 00 eb a2 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 RSP: 0018:ffffc90000477b20 EFLAGS: 00010046 update_process_times+0x199/0x220 kernel/time/timer.c:2491 tick_periodic+0x7e/0x230 kernel/time/tick-common.c:100 RAX: 0000000000000000 RBX: 0000000000000201 RCX: 1ffffffff1f3f383 tick_handle_periodic+0x45/0x120 kernel/time/tick-common.c:112 RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff88ce4ce8 timer_interrupt+0x4e/0x80 arch/x86/kernel/time.c:57 RBP: ffffffff88ce4ce8 R08: 0000000000000000 R09: ffffed1008f71301 R10: ffff888047b8980b R11: 0000000000000002 R12: dffffc0000000000 __handle_irq_event_percpu+0x22c/0x7c0 kernel/irq/handle.c:158 R13: ffff8880259f8c00 R14: 0000000000000000 R15: 0000000000000004 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0xab/0x1e0 kernel/irq/handle.c:210 FS: 0000000000000000(0000) GS:ffff88802c400000(0000) knlGS:0000000000000000 handle_level_irq+0x25d/0x6f0 kernel/irq/chip.c:648 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 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 CR2: 0000000031a23000 CR3: 000000005da20000 CR4: 0000000000350ef0 common_interrupt+0xab/0xd0 arch/x86/kernel/irq.c:247 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] _raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194 Call Trace: __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:1036 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488 common_startup_64+0x13e/0x148 irq event stamp: 622080 hardirqs last enabled at (622077): [] tick_nohz_idle_exit+0x1c1/0x2e0 kernel/time/tick-sched.c:1465 hardirqs last disabled at (622078): [] __schedule+0x290a/0x5d00 kernel/sched/core.c:6634 softirqs last enabled at (622080): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (622080): [] sock_hash_delete_elem+0x2b8/0x360 net/core/sock_map.c:947 softirqs last disabled at (622079): [] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (622079): [] sock_hash_delete_elem+0xd4/0x360 net/core/sock_map.c:939 spin_unlock_bh include/linux/spinlock.h:396 [inline] sock_hash_delete_elem+0x2b8/0x360 net/core/sock_map.c:947 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- bpf_prog_2fe495d516d5c300+0x45/0x49 lock(&rq->__lock); 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 lock(&rq->__lock ); *** DEADLOCK *** 2 locks held by swapper/0/0: #0: ffff88802c23e718 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x252c/0x5d00 kernel/sched/core.c:6743 (&rq->__lock){?.-.}-{2:2} , at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559 #1: ffffffff8d7b4b60 (rcu_read_lock ){....}-{1:2} , at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline] , at: rcu_read_lock include/linux/rcupdate.h:781 [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: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-syzkaller-00005-g928a87efa423 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 schedule_idle+0x59/0x90 kernel/sched/core.c:6864 Call Trace: do_idle+0x287/0x3f0 kernel/sched/idle.c:360 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430 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 start_secondary+0x220/0x2b0 arch/x86/kernel/smpboot.c:313 common_startup_64+0x13e/0x148