audit: type=1400 audit(1662990590.310:8): avc: denied { kernel } for pid=3914 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.0.0-rc5-next-20220912 #1 Not tainted
------------------------------------------------------
syz-executor.2/3915 is trying to acquire lock:
ffffffff853fa878 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff888008c07c20 (&ctx->lock){-...}-{2:2}, at: event_function+0x182/0x3d0
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+0x53b/0x18d0
__schedule+0xedd/0x2470
schedule+0xda/0x1b0
futex_wait_queue+0xf5/0x1e0
futex_wait+0x28e/0x690
do_futex+0x2ff/0x380
__x64_sys_futex+0x1c6/0x4d0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #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+0x3d0/0x540
copy_process+0x3f9e/0x6df0
kernel_clone+0xe7/0x890
user_mode_thread+0xad/0xf0
rest_init+0x24/0x250
arch_call_rest_init+0xf/0x14
start_kernel+0x4c1/0x4e6
secondary_startup_64_no_verify+0xe0/0xeb
-> #1 (&p->pi_lock){-.-.}-{2:2}:
_raw_spin_lock_irqsave+0x39/0x60
try_to_wake_up+0xab/0x1920
up+0x75/0xb0
__up_console_sem+0x6e/0x80
console_unlock+0x46a/0x590
vt_ioctl+0x2822/0x2ca0
tty_ioctl+0x7c4/0x1700
__x64_sys_ioctl+0x19a/0x210
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 ((console_sem).lock){-...}-{2:2}:
__lock_acquire+0x2a02/0x5e70
lock_acquire+0x1a2/0x530
_raw_spin_lock_irqsave+0x39/0x60
down_trylock+0xe/0x70
__down_trylock_console_sem+0x3b/0xd0
vprintk_emit+0x16b/0x560
vprintk+0x84/0xa0
_printk+0xba/0xf1
report_bug.cold+0x72/0xab
handle_bug+0x3c/0x70
exc_invalid_op+0x14/0x50
asm_exc_invalid_op+0x16/0x20
perf_group_detach+0x99e/0x12f0
__perf_remove_from_context+0x71e/0xb20
event_function+0x297/0x3d0
remote_function+0x125/0x1b0
__flush_smp_call_function_queue+0x1df/0x5a0
__sysvec_call_function_single+0x92/0x3a0
sysvec_call_function_single+0x89/0xc0
asm_sysvec_call_function_single+0x16/0x20
_raw_spin_unlock_irqrestore+0x2e/0x60
kmem_cache_alloc+0x23c/0x3e0
prepare_creds+0x2b/0x6f0
copy_creds+0x76/0xb20
copy_process+0xe22/0x6df0
kernel_clone+0xe7/0x890
__do_sys_fork+0x7c/0xb0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
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.2/3915:
#0: ffff88806cf3d120 (&cpuctx_lock){-...}-{2:2}, at: event_function+0x16f/0x3d0
#1: ffff888008c07c20 (&ctx->lock){-...}-{2:2}, at: event_function+0x182/0x3d0
stack backtrace:
CPU: 1 PID: 3915 Comm: syz-executor.2 Not tainted 6.0.0-rc5-next-20220912 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
dump_stack_lvl+0x8b/0xb3
check_noncircular+0x263/0x2e0
__lock_acquire+0x2a02/0x5e70
lock_acquire+0x1a2/0x530
_raw_spin_lock_irqsave+0x39/0x60
down_trylock+0xe/0x70
__down_trylock_console_sem+0x3b/0xd0
vprintk_emit+0x16b/0x560
vprintk+0x84/0xa0
_printk+0xba/0xf1
report_bug.cold+0x72/0xab
handle_bug+0x3c/0x70
exc_invalid_op+0x14/0x50
asm_exc_invalid_op+0x16/0x20
RIP: 0010:perf_group_detach+0x99e/0x12f0
Code: 85 d5 f8 ff ff e8 22 57 ee ff 65 44 8b 25 96 b5 aa 7e 31 ff 44 89 e6 e8 c0 53 ee ff 45 85 e4 0f 84 0a 05 00 00 e8 02 57 ee ff <0f> 0b e9 a9 f8 ff ff e8 f6 56 ee ff 65 8b 1d 6b b5 aa 7e 31 ff 89
RSP: 0018:ffff88806cf09e60 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff88803f2385c8 RCX: 0000000000000000
RDX: ffff88801bcd0000 RSI: ffffffff8157c03e RDI: 0000000000000005
RBP: ffff88803f2385c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865aa05b R12: 0000000000000000
R13: ffff88803f238658 R14: ffff888008c07c00 R15: ffff88803f2385c8
__perf_remove_from_context+0x71e/0xb20
event_function+0x297/0x3d0
remote_function+0x125/0x1b0
__flush_smp_call_function_queue+0x1df/0x5a0
__sysvec_call_function_single+0x92/0x3a0
sysvec_call_function_single+0x89/0xc0
asm_sysvec_call_function_single+0x16/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x60
Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 9a 4d 04 fd 48 89 ef e8 f2 c2 04 fd 80 e7 02 74 06 e8 98 05 27 fd fb bf 01 00 00 00 3d 4e fa fc 65 8b 05 66 84 dc 7b 85 c0 74 07 5b 5d e9 db 50 3a
RSP: 0018:ffff88801bd7faa0 EFLAGS: 00000206
RAX: 0000000000000cdd RBX: 0000000000000246 RCX: 1ffffffff0b5fee1
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff854ced60 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff0a99dac R11: 0000000000000001 R12: ffff8880084783c0
R13: 0000000000000cc0 R14: 0000000000000cc0 R15: 0000000000000cc0
kmem_cache_alloc+0x23c/0x3e0
prepare_creds+0x2b/0x6f0
copy_creds+0x76/0xb20
copy_process+0xe22/0x6df0
kernel_clone+0xe7/0x890
__do_sys_fork+0x7c/0xb0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd478c52b19
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:00007fd4761c8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039
RAX: ffffffffffffffda RBX: 00007fd478d65f60 RCX: 00007fd478c52b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd478cacf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd6bb1e8cf R14: 00007fd4761c8300 R15: 0000000000022000
WARNING: CPU: 1 PID: 3915 at kernel/events/core.c:2047 perf_group_detach+0x99e/0x12f0
Modules linked in:
CPU: 1 PID: 3915 Comm: syz-executor.2 Not tainted 6.0.0-rc5-next-20220912 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:perf_group_detach+0x99e/0x12f0
Code: 85 d5 f8 ff ff e8 22 57 ee ff 65 44 8b 25 96 b5 aa 7e 31 ff 44 89 e6 e8 c0 53 ee ff 45 85 e4 0f 84 0a 05 00 00 e8 02 57 ee ff <0f> 0b e9 a9 f8 ff ff e8 f6 56 ee ff 65 8b 1d 6b b5 aa 7e 31 ff 89
RSP: 0018:ffff88806cf09e60 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff88803f2385c8 RCX: 0000000000000000
RDX: ffff88801bcd0000 RSI: ffffffff8157c03e RDI: 0000000000000005
RBP: ffff88803f2385c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865aa05b R12: 0000000000000000
R13: ffff88803f238658 R14: ffff888008c07c00 R15: ffff88803f2385c8
FS: 00007fd4761c8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5c297c76f4 CR3: 000000003e490000 CR4: 0000000000350ee0
Call Trace:
__perf_remove_from_context+0x71e/0xb20
event_function+0x297/0x3d0
remote_function+0x125/0x1b0
__flush_smp_call_function_queue+0x1df/0x5a0
__sysvec_call_function_single+0x92/0x3a0
sysvec_call_function_single+0x89/0xc0
asm_sysvec_call_function_single+0x16/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x2e/0x60
Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 9a 4d 04 fd 48 89 ef e8 f2 c2 04 fd 80 e7 02 74 06 e8 98 05 27 fd fb bf 01 00 00 00 3d 4e fa fc 65 8b 05 66 84 dc 7b 85 c0 74 07 5b 5d e9 db 50 3a
RSP: 0018:ffff88801bd7faa0 EFLAGS: 00000206
RAX: 0000000000000cdd RBX: 0000000000000246 RCX: 1ffffffff0b5fee1
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffffff854ced60 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff0a99dac R11: 0000000000000001 R12: ffff8880084783c0
R13: 0000000000000cc0 R14: 0000000000000cc0 R15: 0000000000000cc0
kmem_cache_alloc+0x23c/0x3e0
prepare_creds+0x2b/0x6f0
copy_creds+0x76/0xb20
copy_process+0xe22/0x6df0
kernel_clone+0xe7/0x890
__do_sys_fork+0x7c/0xb0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd478c52b19
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:00007fd4761c8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039
RAX: ffffffffffffffda RBX: 00007fd478d65f60 RCX: 00007fd478c52b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd478cacf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd6bb1e8cf R14: 00007fd4761c8300 R15: 0000000000022000
irq event stamp: 3294
hardirqs last enabled at (3293): [] _raw_spin_unlock_irqrestore+0x28/0x60
hardirqs last disabled at (3294): [] sysvec_call_function_single+0xb/0xc0
softirqs last enabled at (3128): [] fpu_clone+0x3c2/0xb00
softirqs last disabled at (3126): [] fpu_clone+0x335/0xb00
---[ end trace 0000000000000000 ]---
Bluetooth: hci0: Opcode 0x c03 failed: -110
----------------
Code disassembly (best guess):
0: 48 83 c7 18 add $0x18,%rdi
4: 53 push %rbx
5: 48 89 f3 mov %rsi,%rbx
8: 48 8b 74 24 10 mov 0x10(%rsp),%rsi
d: e8 9a 4d 04 fd callq 0xfd044dac
12: 48 89 ef mov %rbp,%rdi
15: e8 f2 c2 04 fd callq 0xfd04c30c
1a: 80 e7 02 and $0x2,%bh
1d: 74 06 je 0x25
1f: e8 98 05 27 fd callq 0xfd2705bc
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 3d 4e fa fc callq 0xfcfa4e6c <-- trapping instruction
2f: 65 8b 05 66 84 dc 7b mov %gs:0x7bdc8466(%rip),%eax # 0x7bdc849c
36: 85 c0 test %eax,%eax
38: 74 07 je 0x41
3a: 5b pop %rbx
3b: 5d pop %rbp
3c: e9 .byte 0xe9
3d: db 50 3a fistl 0x3a(%rax)