------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted
------------------------------------------------------
syz-executor.2/5941 is trying to acquire lock:
ffffffff8e00dbb8 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0x20/0xa0 kernel/locking/semaphore.c:139

but task is already holding lock:
ffff8880b943e318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (&rq->__lock){-.-.}-{2:2}:
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
       raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
       raw_spin_rq_lock kernel/sched/sched.h:1385 [inline]
       rq_lock kernel/sched/sched.h:1699 [inline]
       task_fork_fair+0x61/0x1e0 kernel/sched/fair.c:12629
       sched_cgroup_fork+0x37c/0x410 kernel/sched/core.c:4845
       copy_process+0x2217/0x3df0 kernel/fork.c:2498
       kernel_clone+0x223/0x840 kernel/fork.c:2796
       user_mode_thread+0x132/0x1a0 kernel/fork.c:2874
       rest_init+0x27/0x300 init/main.c:695
       arch_call_rest_init+0xe/0x10 init/main.c:831
       start_kernel+0x47a/0x500 init/main.c:1077
       x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:509
       x86_64_start_kernel+0x99/0xa0 arch/x86/kernel/head64.c:490
       common_startup_64+0x13e/0x147

-> #1 (&p->pi_lock){-.-.}-{2:2}:
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline]
       try_to_wake_up+0xb0/0x1470 kernel/sched/core.c:4262
       up+0x72/0x90 kernel/locking/semaphore.c:191
       __up_console_sem kernel/printk/printk.c:340 [inline]
       __console_unlock kernel/printk/printk.c:2725 [inline]
       console_unlock+0x22f/0x4d0 kernel/printk/printk.c:3044
       vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2342
       _printk+0xd5/0x120 kernel/printk/printk.c:2367
       __do_sys_remap_file_pages mm/mmap.c:3024 [inline]
       __se_sys_remap_file_pages+0x86b/0x9c0 mm/mmap.c:3014
       do_syscall_64+0xfb/0x240
       entry_SYSCALL_64_after_hwframe+0x6d/0x75

-> #0 ((console_sem).lock){-.-.}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3134 [inline]
       check_prevs_add kernel/locking/lockdep.c:3253 [inline]
       validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869
       __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
       lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
       down_trylock+0x20/0xa0 kernel/locking/semaphore.c:139
       __down_trylock_console_sem+0x109/0x250 kernel/printk/printk.c:323
       console_trylock kernel/printk/printk.c:2678 [inline]
       console_trylock_spinning kernel/printk/printk.c:1958 [inline]
       vprintk_emit+0x283/0x770 kernel/printk/printk.c:2341
       _printk+0xd5/0x120 kernel/printk/printk.c:2367
       __report_bug lib/bug.c:195 [inline]
       report_bug+0x346/0x500 lib/bug.c:219
       handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239
       exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:260
       asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
       __local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:362
       spin_unlock_bh include/linux/spinlock.h:396 [inline]
       __sock_map_delete net/core/sock_map.c:424 [inline]
       sock_map_delete_elem+0xca/0x140 net/core/sock_map.c:446
       bpf_prog_2c29ac5cdc6b1842+0x42/0x46
       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+0x25a/0x490 kernel/trace/bpf_trace.c:2422
       __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
       trace_sched_switch include/trace/events/sched.h:222 [inline]
       __schedule+0x250b/0x49d0 kernel/sched/core.c:6733
       preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6915
       preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6939
       preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
       unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672
       arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
       stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
       kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
       __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
       __call_rcu_common kernel/rcu/tree.c:2734 [inline]
       call_rcu+0x167/0xa70 kernel/rcu/tree.c:2838
       release_probes kernel/tracepoint.c:164 [inline]
       tracepoint_add_func+0x620/0x9e0 kernel/tracepoint.c:386
       tracepoint_probe_register_prio_may_exist+0x122/0x190 kernel/tracepoint.c:482
       bpf_raw_tp_link_attach+0x470/0x6d0 kernel/bpf/syscall.c:3836
       bpf_raw_tracepoint_open+0x19d/0x210 kernel/bpf/syscall.c:3863
       __sys_bpf+0x3c0/0x810 kernel/bpf/syscall.c:5673
       __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
       __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
       __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
       do_syscall_64+0xfb/0x240
       entry_SYSCALL_64_after_hwframe+0x6d/0x75

other info that might help us debug this:

Chain exists of:
  (console_sem).lock --> &p->pi_lock --> &rq->__lock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&rq->__lock);
                               lock(&p->pi_lock);
                               lock(&rq->__lock);
  lock((console_sem).lock);

 *** DEADLOCK ***

3 locks held by syz-executor.2/5941:
 #0: ffffffff8e17d688 (tracepoints_mutex){+.+.}-{3:3}, at: tracepoint_probe_register_prio_may_exist+0xbb/0x190 kernel/tracepoint.c:478
 #1: ffff8880b943e318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
 #2: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #2: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #2: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline]
 #2: ffffffff8e132020 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x16e/0x490 kernel/trace/bpf_trace.c:2422

stack backtrace:
CPU: 0 PID: 5941 Comm: syz-executor.2 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:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 check_noncircular+0x36a/0x4a0 kernel/locking/lockdep.c:2187
 check_prev_add kernel/locking/lockdep.c:3134 [inline]
 check_prevs_add kernel/locking/lockdep.c:3253 [inline]
 validate_chain+0x18cb/0x58e0 kernel/locking/lockdep.c:3869
 __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
 lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 down_trylock+0x20/0xa0 kernel/locking/semaphore.c:139
 __down_trylock_console_sem+0x109/0x250 kernel/printk/printk.c:323
 console_trylock kernel/printk/printk.c:2678 [inline]
 console_trylock_spinning kernel/printk/printk.c:1958 [inline]
 vprintk_emit+0x283/0x770 kernel/printk/printk.c:2341
 _printk+0xd5/0x120 kernel/printk/printk.c:2367
 __report_bug lib/bug.c:195 [inline]
 report_bug+0x346/0x500 lib/bug.c:219
 handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239
 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:260
 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621
RIP: 0010:__local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:362
Code: 3b 44 24 60 75 52 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 0f 0b 90 e9 ca fe ff ff e8 55 00 00 00 eb 9c 90 <0f> 0b 90 e9 fa fe ff ff 48 c7 c1 0c 41 86 8f 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000494ef00 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92000929de4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff895b48fa
RBP: ffffc9000494efc0 R08: ffff88805fb0d9eb R09: 1ffff1100bf61b3d
R10: dffffc0000000000 R11: ffffed100bf61b3e R12: dffffc0000000000
R13: ffff88802de8da80 R14: ffffc9000494ef40 R15: 0000000000000201
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 __sock_map_delete net/core/sock_map.c:424 [inline]
 sock_map_delete_elem+0xca/0x140 net/core/sock_map.c:446
 bpf_prog_2c29ac5cdc6b1842+0x42/0x46
 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+0x25a/0x490 kernel/trace/bpf_trace.c:2422
 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
 trace_sched_switch include/trace/events/sched.h:222 [inline]
 __schedule+0x250b/0x49d0 kernel/sched/core.c:6733
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6915
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6939
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
 unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:2734 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2838
 release_probes kernel/tracepoint.c:164 [inline]
 tracepoint_add_func+0x620/0x9e0 kernel/tracepoint.c:386
 tracepoint_probe_register_prio_may_exist+0x122/0x190 kernel/tracepoint.c:482
 bpf_raw_tp_link_attach+0x470/0x6d0 kernel/bpf/syscall.c:3836
 bpf_raw_tracepoint_open+0x19d/0x210 kernel/bpf/syscall.c:3863
 __sys_bpf+0x3c0/0x810 kernel/bpf/syscall.c:5673
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f9c0d67de69
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:00007f9c0e3eb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9c0d7abf80 RCX: 00007f9c0d67de69
RDX: 0000000000000010 RSI: 0000000020000080 RDI: 0000000000000011
RBP: 00007f9c0d6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9c0d7abf80 R15: 00007ffc824ac538
 </TASK>
WARNING: CPU: 0 PID: 5941 at kernel/softirq.c:362 __local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:362
Modules linked in:
CPU: 0 PID: 5941 Comm: syz-executor.2 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:362
Code: 3b 44 24 60 75 52 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 0f 0b 90 e9 ca fe ff ff e8 55 00 00 00 eb 9c 90 <0f> 0b 90 e9 fa fe ff ff 48 c7 c1 0c 41 86 8f 80 e1 07 80 c1 03 38
RSP: 0018:ffffc9000494ef00 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92000929de4 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff895b48fa
RBP: ffffc9000494efc0 R08: ffff88805fb0d9eb R09: 1ffff1100bf61b3d
R10: dffffc0000000000 R11: ffffed100bf61b3e R12: dffffc0000000000
R13: ffff88802de8da80 R14: ffffc9000494ef40 R15: 0000000000000201
FS:  00007f9c0e3eb6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f321000 CR3: 00000000616fa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 __sock_map_delete net/core/sock_map.c:424 [inline]
 sock_map_delete_elem+0xca/0x140 net/core/sock_map.c:446
 bpf_prog_2c29ac5cdc6b1842+0x42/0x46
 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+0x25a/0x490 kernel/trace/bpf_trace.c:2422
 __traceiter_sched_switch+0x98/0xd0 include/trace/events/sched.h:222
 trace_sched_switch include/trace/events/sched.h:222 [inline]
 __schedule+0x250b/0x49d0 kernel/sched/core.c:6733
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6915
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6939
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
 unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:2734 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:2838
 release_probes kernel/tracepoint.c:164 [inline]
 tracepoint_add_func+0x620/0x9e0 kernel/tracepoint.c:386
 tracepoint_probe_register_prio_may_exist+0x122/0x190 kernel/tracepoint.c:482
 bpf_raw_tp_link_attach+0x470/0x6d0 kernel/bpf/syscall.c:3836
 bpf_raw_tracepoint_open+0x19d/0x210 kernel/bpf/syscall.c:3863
 __sys_bpf+0x3c0/0x810 kernel/bpf/syscall.c:5673
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5736
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7f9c0d67de69
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:00007f9c0e3eb0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9c0d7abf80 RCX: 00007f9c0d67de69
RDX: 0000000000000010 RSI: 0000000020000080 RDI: 0000000000000011
RBP: 00007f9c0d6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9c0d7abf80 R15: 00007ffc824ac538
 </TASK>