======================================================
WARNING: possible circular locking dependency detected
6.1.94-syzkaller #0 Not tainted
------------------------------------------------------
syz-executor.3/5901 is trying to acquire lock:
ffff88813feec598 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xad/0x12e0 kernel/sched/core.c:4112

but task is already holding lock:
ffff8880b9835e90 (lock#10){+.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
ffff8880b9835e90 (lock#10){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 mm/mmap_lock.c:237

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #2 (lock#10){+.+.}-{2:2}:
       lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
       local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
       __mmap_lock_do_trace_acquire_returned+0x9d/0x670 mm/mmap_lock.c:237
       __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline]
       mmap_read_trylock include/linux/mmap_lock.h:137 [inline]
       stack_map_get_build_id_offset+0x99e/0x9c0 kernel/bpf/stackmap.c:144
       __bpf_get_stack+0x495/0x570 kernel/bpf/stackmap.c:452
       ____bpf_get_stack_raw_tp kernel/trace/bpf_trace.c:1877 [inline]
       bpf_get_stack_raw_tp+0x1b2/0x220 kernel/trace/bpf_trace.c:1867
       0xffffffffa0000906
       bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
       __bpf_prog_run include/linux/filter.h:603 [inline]
       bpf_prog_run include/linux/filter.h:610 [inline]
       __bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
       bpf_trace_run2+0x1fd/0x410 kernel/trace/bpf_trace.c:2312
       trace_tlb_flush+0x151/0x1a0 include/trace/events/tlb.h:38
       switch_mm_irqs_off+0x84a/0xc20
       context_switch kernel/sched/core.c:5230 [inline]
       __schedule+0x1140/0x4550 kernel/sched/core.c:6558
       preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6727
       preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6751
       preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
       __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
       _raw_spin_unlock+0x36/0x40 kernel/locking/spinlock.c:186
       spin_unlock include/linux/spinlock.h:391 [inline]
       __text_poke+0x81a/0x9a0 arch/x86/kernel/alternative.c:1216
       text_poke arch/x86/kernel/alternative.c:1240 [inline]
       text_poke_bp_batch+0x153/0x940 arch/x86/kernel/alternative.c:1531
       text_poke_flush arch/x86/kernel/alternative.c:1725 [inline]
       text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1732
       arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
       static_key_enable_cpuslocked+0x12e/0x250 kernel/jump_label.c:177
       static_key_enable+0x16/0x20 kernel/jump_label.c:190
       tracepoint_add_func+0x947/0x9d0 kernel/tracepoint.c:361
       tracepoint_probe_register_prio_may_exist+0x11e/0x190 kernel/tracepoint.c:482
       bpf_raw_tp_link_attach+0x456/0x6b0 kernel/bpf/syscall.c:3372
       bpf_raw_tracepoint_open+0x196/0x210 kernel/bpf/syscall.c:3399
       __sys_bpf+0x4a7/0x6c0 kernel/bpf/syscall.c:5047
       __do_sys_bpf kernel/bpf/syscall.c:5109 [inline]
       __se_sys_bpf kernel/bpf/syscall.c:5107 [inline]
       __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107
       do_syscall_x64 arch/x86/entry/common.c:51 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

-> #1 (&rq->__lock){-.-.}-{2:2}:
       lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
       _raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:378
       raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
       raw_spin_rq_lock kernel/sched/sched.h:1354 [inline]
       rq_lock kernel/sched/sched.h:1644 [inline]
       task_fork_fair+0x5d/0x350 kernel/sched/fair.c:11884
       sched_cgroup_fork+0x374/0x400 kernel/sched/core.c:4686
       copy_process+0x2442/0x4060 kernel/fork.c:2384
       kernel_clone+0x222/0x920 kernel/fork.c:2682
       user_mode_thread+0x12e/0x190 kernel/fork.c:2758
       rest_init+0x23/0x300 init/main.c:698
       start_kernel+0x0/0x53f init/main.c:893
       start_kernel+0x496/0x53f init/main.c:1140
       secondary_startup_64_no_verify+0xcf/0xdb

-> #0 (&p->pi_lock){-.-.}-{2:2}:
       check_prev_add kernel/locking/lockdep.c:3090 [inline]
       check_prevs_add kernel/locking/lockdep.c:3209 [inline]
       validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
       __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
       lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
       try_to_wake_up+0xad/0x12e0 kernel/sched/core.c:4112
       rcu_read_unlock_special+0x3d2/0x540 kernel/rcu/tree_plugin.h:655
       __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426
       rcu_read_unlock include/linux/rcupdate.h:823 [inline]
       put_memcg_path_buf+0xde/0x110 mm/mmap_lock.c:153
       __mmap_lock_do_trace_acquire_returned+0x1f7/0x670 mm/mmap_lock.c:237
       __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline]
       mmap_read_trylock include/linux/mmap_lock.h:137 [inline]
       get_mmap_lock_carefully mm/memory.c:5304 [inline]
       lock_mm_and_find_vma+0x219/0x2e0 mm/memory.c:5366
       do_user_addr_fault arch/x86/mm/fault.c:1312 [inline]
       handle_page_fault arch/x86/mm/fault.c:1431 [inline]
       exc_page_fault+0x169/0x620 arch/x86/mm/fault.c:1487
       asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
       copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:165
       copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
       raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
       copyout+0xd8/0x120 lib/iov_iter.c:170
       _copy_to_iter+0x4a6/0x1000 lib/iov_iter.c:527
       __skb_datagram_iter+0xd4/0x780 net/core/datagram.c:419
       skb_copy_datagram_iter+0xe1/0x2b0 net/core/datagram.c:527
       skb_copy_datagram_msg include/linux/skbuff.h:3956 [inline]
       tipc_recvstream+0x7a4/0xf70 net/tipc/socket.c:2071
       ____sys_recvmsg+0x285/0x530
       ___sys_recvmsg net/socket.c:2775 [inline]
       __sys_recvmsg+0x2e9/0x3d0 net/socket.c:2805
       do_syscall_x64 arch/x86/entry/common.c:51 [inline]
       do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
       entry_SYSCALL_64_after_hwframe+0x68/0xd2

other info that might help us debug this:

Chain exists of:
  &p->pi_lock --> &rq->__lock --> lock#10

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(lock#10);
                               lock(&rq->__lock);
                               lock(lock#10);
  lock(&p->pi_lock);

 *** DEADLOCK ***

4 locks held by syz-executor.3/5901:
 #0: ffff88807c053df0 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1748 [inline]
 #0: ffff88807c053df0 (sk_lock-AF_TIPC){+.+.}-{0:0}, at: tipc_wait_for_rcvmsg+0x382/0x690 net/tipc/socket.c:1852
 #1: ffff8880295aa6d8 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
 #1: ffff8880295aa6d8 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5304 [inline]
 #1: ffff8880295aa6d8 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x2e/0x2e0 mm/memory.c:5366
 #2: ffff8880b9835e90 (lock#10){+.+.}-{2:2}, at: local_lock_acquire include/linux/local_lock_internal.h:29 [inline]
 #2: ffff8880b9835e90 (lock#10){+.+.}-{2:2}, at: __mmap_lock_do_trace_acquire_returned+0x84/0x670 mm/mmap_lock.c:237
 #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
 #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: get_memcg_path_buf mm/mmap_lock.c:139 [inline]
 #3: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: get_mm_memcg_path+0xb1/0x600 mm/mmap_lock.c:209

stack backtrace:
CPU: 0 PID: 5901 Comm: syz-executor.3 Not tainted 6.1.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170
 check_prev_add kernel/locking/lockdep.c:3090 [inline]
 check_prevs_add kernel/locking/lockdep.c:3209 [inline]
 validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
 __lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 try_to_wake_up+0xad/0x12e0 kernel/sched/core.c:4112
 rcu_read_unlock_special+0x3d2/0x540 kernel/rcu/tree_plugin.h:655
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 put_memcg_path_buf+0xde/0x110 mm/mmap_lock.c:153
 __mmap_lock_do_trace_acquire_returned+0x1f7/0x670 mm/mmap_lock.c:237
 __mmap_lock_trace_acquire_returned include/linux/mmap_lock.h:36 [inline]
 mmap_read_trylock include/linux/mmap_lock.h:137 [inline]
 get_mmap_lock_carefully mm/memory.c:5304 [inline]
 lock_mm_and_find_vma+0x219/0x2e0 mm/memory.c:5366
 do_user_addr_fault arch/x86/mm/fault.c:1312 [inline]
 handle_page_fault arch/x86/mm/fault.c:1431 [inline]
 exc_page_fault+0x169/0x620 arch/x86/mm/fault.c:1487
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166
Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 <f3> a4 31 c0 0f 01 ca c3 89 ca eb 0a 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc9000ad4f790 EFLAGS: 00050206
RAX: ffffffff84362c01 RBX: 00007ffffffeee30 RCX: 000000000000b3c0
RDX: 00000000000101d0 RSI: ffff888053484ef8 RDI: 00000000202ba000
RBP: ffffc9000ad4f918 R08: dffffc0000000000 R09: ffffed100a692057
R10: 0000000000000007 R11: dffffc0000000001 R12: 00000000000101d0
R13: 0000000000000000 R14: 00000000202b51f0 R15: ffff8880534800e8
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
 copyout+0xd8/0x120 lib/iov_iter.c:170
 _copy_to_iter+0x4a6/0x1000 lib/iov_iter.c:527
 __skb_datagram_iter+0xd4/0x780 net/core/datagram.c:419
 skb_copy_datagram_iter+0xe1/0x2b0 net/core/datagram.c:527
 skb_copy_datagram_msg include/linux/skbuff.h:3956 [inline]
 tipc_recvstream+0x7a4/0xf70 net/tipc/socket.c:2071
 ____sys_recvmsg+0x285/0x530
 ___sys_recvmsg net/socket.c:2775 [inline]
 __sys_recvmsg+0x2e9/0x3d0 net/socket.c:2805
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f708127cea9
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:00007f7081fc80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00007f70813b3f80 RCX: 00007f708127cea9
RDX: 0000000000001f00 RSI: 0000000020000500 RDI: 0000000000000004
RBP: 00007f70812ebff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f70813b3f80 R15: 00007fffd41d8cb8
 </TASK>
----------------
Code disassembly (best guess):
   0:	ff c9                	dec    %ecx
   2:	75 f2                	jne    0xfffffff6
   4:	89 d1                	mov    %edx,%ecx
   6:	c1 e9 03             	shr    $0x3,%ecx
   9:	83 e2 07             	and    $0x7,%edx
   c:	f3 48 a5             	rep movsq %ds:(%rsi),%es:(%rdi)
   f:	89 d1                	mov    %edx,%ecx
  11:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi)
  13:	31 c0                	xor    %eax,%eax
  15:	0f 01 ca             	clac
  18:	c3                   	ret
  19:	8d 0c ca             	lea    (%rdx,%rcx,8),%ecx
  1c:	89 ca                	mov    %ecx,%edx
  1e:	eb 20                	jmp    0x40
  20:	0f 01 cb             	stac
  23:	83 fa 40             	cmp    $0x40,%edx
  26:	72 38                	jb     0x60
  28:	89 d1                	mov    %edx,%ecx
* 2a:	f3 a4                	rep movsb %ds:(%rsi),%es:(%rdi) <-- trapping instruction
  2c:	31 c0                	xor    %eax,%eax
  2e:	0f 01 ca             	clac
  31:	c3                   	ret
  32:	89 ca                	mov    %ecx,%edx
  34:	eb 0a                	jmp    0x40
  36:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  3d:	00 00 00