R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc339b637f R14: 00007f8791486300 R15: 0000000000022000
 </TASK>
Call Trace:
======================================================
WARNING: possible circular locking dependency detected
5.18.0-rc2-next-20220414 #1 Not tainted
------------------------------------------------------
syz-executor.0/5826 is trying to acquire lock:
ffffffff851f6c58 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0xe/0x60

but task is already holding lock:
ffff888042f7c420 (&ctx->lock){-.-.}-{2:2}, at: __perf_event_task_sched_in+0x29c/0x6e0

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #3 (&ctx->lock){-.-.}-{2:2}:
       _raw_spin_lock+0x2a/0x40
       __perf_event_task_sched_out+0x537/0x1970
       __schedule+0xec4/0x2450
       schedule+0xd2/0x1f0
       exit_to_user_mode_prepare+0x114/0x1a0
       syscall_exit_to_user_mode+0x19/0x40
       do_syscall_64+0x48/0x90
       entry_SYSCALL_64_after_hwframe+0x44/0xae

-> #2 (&rq->__lock){-.-.}-{2:2}:
       _raw_spin_lock_nested+0x30/0x40
       raw_spin_rq_lock_nested+0x1e/0x30
       task_fork_fair+0x63/0x4d0
       sched_cgroup_fork+0x343/0x490
       copy_process+0x4082/0x6db0
       kernel_clone+0xe7/0xa60
       kernel_thread+0xb5/0xf0
       rest_init+0x24/0x3d0
       start_kernel+0x4cd/0x4ee
       secondary_startup_64_no_verify+0xe0/0xeb

-> #1 (&p->pi_lock){-.-.}-{2:2}:
       _raw_spin_lock_irqsave+0x39/0x50
       try_to_wake_up+0xa5/0x1060
       up+0x75/0xb0
       __up_console_sem+0x6e/0x80
       console_unlock+0x603/0xd40
       vprintk_emit+0x1b4/0x550
       vprintk+0x80/0x90
       _printk+0xba/0xed
       kauditd_hold_skb.cold+0x3f/0x4e
       kauditd_send_queue+0x22b/0x290
       kauditd_thread+0x762/0xba0
       kthread+0x2f2/0x3b0
       ret_from_fork+0x22/0x30

-> #0 ((console_sem).lock){-.-.}-{2:2}:
       __lock_acquire+0x2c2f/0x6120
       lock_acquire+0x1a2/0x530
       _raw_spin_lock_irqsave+0x39/0x50
       down_trylock+0xe/0x60
       __down_trylock_console_sem+0x3b/0xd0
       vprintk_emit+0x162/0x550
       vprintk+0x80/0x90
       _printk+0xba/0xed
       show_trace_log_lvl+0x57/0x2bb
       ex_handler_msr+0x311/0x3a0
       fixup_exception+0x307/0xff0
       gp_try_fixup_and_notify.constprop.0+0x1e/0x120
       exc_general_protection+0xe4/0x210
       asm_exc_general_protection+0x1e/0x30
       x86_pmu_enable_event+0x15f/0x2f0
       amd_pmu_enable_all+0x12c/0x1a0
       x86_pmu_enable+0x580/0xd90
       __perf_event_task_sched_in+0x56b/0x6e0
       finish_task_switch.isra.0+0x45c/0x870
       __schedule+0x895/0x2450
       schedule+0xd2/0x1f0
       futex_wait_queue+0x144/0x3b0
       futex_wait+0x2c9/0x660
       do_futex+0x2fb/0x380
       __x64_sys_futex+0x1c6/0x4c0
       do_syscall_64+0x3b/0x90
       entry_SYSCALL_64_after_hwframe+0x44/0xae

other info that might help us debug this:

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

 Possible unsafe locking scenario:

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

 *** DEADLOCK ***

2 locks held by syz-executor.0/5826:
 #0: ffff88806ce3f220 (&cpuctx_lock){-.-.}-{2:2}, at: __perf_event_task_sched_in+0x28b/0x6e0
 #1: ffff888042f7c420 (&ctx->lock){-.-.}-{2:2}, at: __perf_event_task_sched_in+0x29c/0x6e0

stack backtrace:
CPU: 0 PID: 5826 Comm: syz-executor.0 Not tainted 5.18.0-rc2-next-20220414 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 check_noncircular+0x25f/0x2e0
 __lock_acquire+0x2c2f/0x6120
 lock_acquire+0x1a2/0x530
 _raw_spin_lock_irqsave+0x39/0x50
 down_trylock+0xe/0x60
 __down_trylock_console_sem+0x3b/0xd0
 vprintk_emit+0x162/0x550
 vprintk+0x80/0x90
 _printk+0xba/0xed
 show_trace_log_lvl+0x57/0x2bb
 ex_handler_msr+0x311/0x3a0
 fixup_exception+0x307/0xff0
 gp_try_fixup_and_notify.constprop.0+0x1e/0x120
 exc_general_protection+0xe4/0x210
 asm_exc_general_protection+0x1e/0x30
RIP: 0010:x86_pmu_enable_event+0x15f/0x2f0
Code: 81 cc 00 00 40 00 48 c1 ea 03 4d 21 ec 80 3c 02 00 0f 85 79 01 00 00 48 8b 9b 70 01 00 00 4c 89 e2 44 89 e0 48 c1 ea 20 89 d9 <0f> 30 66 90 e8 58 23 43 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 49 23
RSP: 0018:ffff888017657860 EFLAGS: 00010016
RAX: 0000000000530076 RBX: 00000000c0010200 RCX: 00000000c0010200
RDX: 0000000000000100 RSI: ffffffff81010294 RDI: ffff888008201e30
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81010287 R11: 0000000000000000 R12: 0000010000530076
R13: fffffdffffffffff R14: fffffbfff0b1b82d R15: 0000000000000000
 amd_pmu_enable_all+0x12c/0x1a0
 x86_pmu_enable+0x580/0xd90
 __perf_event_task_sched_in+0x56b/0x6e0
 finish_task_switch.isra.0+0x45c/0x870
 __schedule+0x895/0x2450
 schedule+0xd2/0x1f0
 futex_wait_queue+0x144/0x3b0
 futex_wait+0x2c9/0x660
 do_futex+0x2fb/0x380
 __x64_sys_futex+0x1c6/0x4c0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8837d13b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8835289218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8837e26f68 RCX: 00007f8837d13b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8837e26f68
RBP: 00007f8837e26f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8837e26f6c
R13: 00007ffc1f4ae37f R14: 00007f8835289300 R15: 0000000000022000
 </TASK>
 <TASK>
 amd_pmu_enable_all+0x12c/0x1a0
 x86_pmu_enable+0x580/0xd90
 __perf_event_task_sched_in+0x56b/0x6e0
 finish_task_switch.isra.0+0x45c/0x870
 __schedule+0x895/0x2450
 schedule+0xd2/0x1f0
 futex_wait_queue+0x144/0x3b0
 futex_wait+0x2c9/0x660
 do_futex+0x2fb/0x380
 __x64_sys_futex+0x1c6/0x4c0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8837d13b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8835289218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8837e26f68 RCX: 00007f8837d13b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8837e26f68
RBP: 00007f8837e26f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8837e26f6c
R13: 00007ffc1f4ae37f R14: 00007f8835289300 R15: 0000000000022000
 </TASK>
Call Trace:
 <NMI>
 amd_pmu_enable_all+0x12c/0x1a0
 amd_pmu_handle_irq+0x17d/0x1d0
 perf_event_nmi_handler+0x48/0x70
 nmi_handle+0x140/0x390
 default_do_nmi+0x6b/0x170
 exc_nmi+0xf7/0x120
 end_repeat_nmi+0x16/0x55
RIP: 0010:x86_pmu_enable+0x584/0xd90
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 27 06 00 00 41 c7 86 10 02 00 00 01 00 00 00 8b 7c 24 44 e8 70 5a 00 00 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 bd 2c 43 00 4c 8b 34 24 e8 b4 2c
RSP: 0018:ffff888017657930 EFLAGS: 00000096
RAX: 0000000040000002 RBX: ffffffff84f1cca0 RCX: 0000000000000000
RDX: ffff88801ccfb580 RSI: ffffffff8100f990 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff81015553 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806ce21c20 R15: 0000000000000001
 </NMI>
 <TASK>
 __perf_event_task_sched_in+0x56b/0x6e0
 finish_task_switch.isra.0+0x45c/0x870
 __schedule+0x895/0x2450
 schedule+0xd2/0x1f0
 futex_wait_queue+0x144/0x3b0
 futex_wait+0x2c9/0x660
 do_futex+0x2fb/0x380
 __x64_sys_futex+0x1c6/0x4c0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8837d13b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8835289218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8837e26f68 RCX: 00007f8837d13b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8837e26f68
RBP: 00007f8837e26f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8837e26f6c
R13: 00007ffc1f4ae37f R14: 00007f8835289300 R15: 0000000000022000
 </TASK>
Call Trace:
 <NMI>
 amd_pmu_enable_all+0x12c/0x1a0
 amd_pmu_handle_irq+0x17d/0x1d0
 perf_event_nmi_handler+0x48/0x70
 nmi_handle+0x140/0x390
 default_do_nmi+0x6b/0x170
 exc_nmi+0xf7/0x120
 end_repeat_nmi+0x16/0x55
RIP: 0010:x86_pmu_enable+0x584/0xd90
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 27 06 00 00 41 c7 86 10 02 00 00 01 00 00 00 8b 7c 24 44 e8 70 5a 00 00 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 bd 2c 43 00 4c 8b 34 24 e8 b4 2c
RSP: 0018:ffff888017657930 EFLAGS: 00000096
RAX: 0000000040000002 RBX: ffffffff84f1cca0 RCX: 0000000000000000
RDX: ffff88801ccfb580 RSI: ffffffff8100f990 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff81015553 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806ce21c20 R15: 0000000000000001
 </NMI>
WARNING: stack recursion on stack type 6
Call Trace:
 <NMI>
 amd_pmu_enable_all+0x12c/0x1a0
 amd_pmu_handle_irq+0x17d/0x1d0
 perf_event_nmi_handler+0x48/0x70
 nmi_handle+0x140/0x390
 default_do_nmi+0x6b/0x170
 exc_nmi+0xf7/0x120
 end_repeat_nmi+0x16/0x55
RIP: 0010:x86_pmu_enable+0x584/0xd90
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 27 06 00 00 41 c7 86 10 02 00 00 01 00 00 00 8b 7c 24 44 e8 70 5a 00 00 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 bd 2c 43 00 4c 8b 34 24 e8 b4 2c
RSP: 0018:ffff888017657930 EFLAGS: 00000096
RAX: 0000000040000002 RBX: ffffffff84f1cca0 RCX: 0000000000000000
RDX: ffff88801ccfb580 RSI: ffffffff8100f990 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff81015553 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806ce21c20 R15: 0000000000000001
 </NMI>
Call Trace:
 <NMI>
 amd_pmu_enable_all+0x12c/0x1a0
 amd_pmu_handle_irq+0x17d/0x1d0
 perf_event_nmi_handler+0x48/0x70
 nmi_handle+0x140/0x390
 default_do_nmi+0x6b/0x170
 exc_nmi+0xf7/0x120
 end_repeat_nmi+0x16/0x55
RIP: 0010:x86_pmu_enable+0x584/0xd90
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 27 06 00 00 41 c7 86 10 02 00 00 01 00 00 00 8b 7c 24 44 e8 70 5a 00 00 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 bd 2c 43 00 4c 8b 34 24 e8 b4 2c
RSP: 0018:ffff888017657930 EFLAGS: 00000096
RAX: 0000000040000002 RBX: ffffffff84f1cca0 RCX: 0000000000000000
RDX: ffff88801ccfb580 RSI: ffffffff8100f990 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff81015553 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806ce21c20 R15: 0000000000000001
 </NMI>
Call Trace:
 <NMI>
 amd_pmu_enable_all+0x12c/0x1a0
 amd_pmu_handle_irq+0x17d/0x1d0
 perf_event_nmi_handler+0x48/0x70
 nmi_handle+0x140/0x390
 default_do_nmi+0x6b/0x170
 exc_nmi+0xf7/0x120
 end_repeat_nmi+0x16/0x55
RIP: 0010:x86_pmu_enable+0x584/0xd90
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 27 06 00 00 41 c7 86 10 02 00 00 01 00 00 00 8b 7c 24 44 e8 70 5a 00 00 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 bd 2c 43 00 4c 8b 34 24 e8 b4 2c
RSP: 0018:ffff888017657930 EFLAGS: 00000096
RAX: 0000000040000002 RBX: ffffffff84f1cca0 RCX: 0000000000000000
RDX: ffff88801ccfb580 RSI: ffffffff8100f990 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff81015553 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806ce21c20 R15: 0000000000000001
 </NMI>
Call Trace:
 <NMI>
 amd_pmu_enable_all+0x12c/0x1a0
 amd_pmu_handle_irq+0x17d/0x1d0
 perf_event_nmi_handler+0x48/0x70
 nmi_handle+0x140/0x390
 default_do_nmi+0x6b/0x170
 exc_nmi+0xf7/0x120
 end_repeat_nmi+0x16/0x55
RIP: 0010:x86_pmu_enable+0x584/0xd90
Code: ea 03 0f b6 04 02 84 c0 74 08 3c 03 0f 8e 27 06 00 00 41 c7 86 10 02 00 00 01 00 00 00 8b 7c 24 44 e8 70 5a 00 00 48 83 c4 58 <5b> 5d 41 5c 41 5d 41 5e 41 5f e9 bd 2c 43 00 4c 8b 34 24 e8 b4 2c
RSP: 0018:ffff888017657930 EFLAGS: 00000096
RAX: 0000000040000002 RBX: ffffffff84f1cca0 RCX: 0000000000000000
RDX: ffff88801ccfb580 RSI: ffffffff8100f990 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000006 R09: 0000000000000000
R10: ffffffff81015553 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88806ce21c20 R15: 0000000000000001
 </NMI>
perf: interrupt took too long (38290 > 36590), lowering kernel.perf_event_max_sample_rate to 5000
Call Trace:
 <IRQ>
 x86_pmu_stop+0x149/0x330
 x86_pmu_del+0x1be/0x610
 event_sched_out+0x2ed/0xe10
 __perf_remove_from_context+0x87/0xbe0
 event_function+0x297/0x3d0
 remote_function+0x125/0x1b0
 flush_smp_call_function_queue+0x1df/0x610
 __sysvec_call_function_single+0x92/0x3a0
 sysvec_call_function_single+0x89/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x12/0x20
RIP: 0010:finish_task_switch.isra.0+0x230/0x870
Code: 89 f7 48 c7 03 00 00 00 00 e8 ec 93 20 03 4d 85 e4 75 ba 4c 89 f7 e8 7f af f5 02 e8 fa 3f 2b 00 fb 65 48 8b 1c 25 40 6f 02 00 <48> 8d bb 40 14 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffff888017657a68 EFLAGS: 00000246
RAX: 0000000000000007 RBX: ffff88801ccfb580 RCX: 1ffffffff0b1beb9
RDX: 0000000000000000 RSI: ffffffff814ae4b1 RDI: ffffffff811fa466
RBP: ffff888017657aa8 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff814ae498 R11: 0000000000000001 R12: ffffffff858df5cc
R13: ffff888043c10000 R14: ffff88806ce37e00 R15: ffff88806ce37e18
 __schedule+0x895/0x2450
 schedule+0xd2/0x1f0
 futex_wait_queue+0x144/0x3b0
 futex_wait+0x2c9/0x660
 do_futex+0x2fb/0x380
 __x64_sys_futex+0x1c6/0x4c0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f8837d13b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8835289218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8837e26f68 RCX: 00007f8837d13b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8837e26f68
RBP: 00007f8837e26f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8837e26f6c
R13: 00007ffc1f4ae37f R14: 00007f8835289300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	81 cc 00 00 40 00    	or     $0x400000,%esp
   6:	48 c1 ea 03          	shr    $0x3,%rdx
   a:	4d 21 ec             	and    %r13,%r12
   d:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  11:	0f 85 79 01 00 00    	jne    0x190
  17:	48 8b 9b 70 01 00 00 	mov    0x170(%rbx),%rbx
  1e:	4c 89 e2             	mov    %r12,%rdx
  21:	44 89 e0             	mov    %r12d,%eax
  24:	48 c1 ea 20          	shr    $0x20,%rdx
  28:	89 d9                	mov    %ebx,%ecx
* 2a:	0f 30                	wrmsr <-- trapping instruction
  2c:	66 90                	xchg   %ax,%ax
  2e:	e8 58 23 43 00       	callq  0x43238b
  33:	5b                   	pop    %rbx
  34:	5d                   	pop    %rbp
  35:	41 5c                	pop    %r12
  37:	41 5d                	pop    %r13
  39:	41 5e                	pop    %r14
  3b:	41 5f                	pop    %r15
  3d:	e9                   	.byte 0xe9
  3e:	49                   	rex.WB
  3f:	23                   	.byte 0x23