audit: type=1400 audit(1663935019.906:8): avc: denied { kernel } for pid=3956 comm="syz-executor.4" 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-rc6-next-20220923 #1 Not tainted
------------------------------------------------------
syz-executor.4/3957 is trying to acquire lock:
ffffffff853faaf8 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88803d065820 (&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+0x4183/0x6e20
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/0x1930
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
prctl_set_mm+0x2/0x1190
__do_sys_prctl+0x35e/0x1120
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.4/3957:
#0: ffff88806cf3d160 (&cpuctx_lock){-...}-{2:2}, at: event_function+0x16f/0x3d0
#1: ffff88803d065820 (&ctx->lock){-...}-{2:2}, at: event_function+0x182/0x3d0
stack backtrace:
CPU: 1 PID: 3957 Comm: syz-executor.4 Not tainted 6.0.0-rc6-next-20220923 #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 72 5b ee ff 65 44 8b 25 36 c6 aa 7e 31 ff 44 89 e6 e8 10 58 ee ff 45 85 e4 0f 84 0a 05 00 00 e8 52 5b ee ff <0f> 0b e9 a9 f8 ff ff e8 46 5b ee ff 65 8b 1d 0b c6 aa 7e 31 ff 89
RSP: 0018:ffff88806cf09e60 EFLAGS: 00010046
RAX: 0000000080010002 RBX: ffff88803eff85c8 RCX: 0000000000000000
RDX: ffff888017f65040 RSI: ffffffff8157af9e RDI: 0000000000000005
RBP: ffff88803eff85c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b005b R12: 0000000000000000
R13: ffff88803eff8658 R14: ffff88803d065800 R15: ffff88803eff85c8
__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:prctl_set_mm+0x2/0x1190
Code: 5d 00 e9 ae fe ff ff e8 8c df 5d 00 e9 c7 fe ff ff e8 82 df 5d 00 e9 50 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 <41> 89 ff 41 56 49 be 00 00 00 00 00 fc ff df 41 55 49 89 d5 41 54
RSP: 0018:ffff88803ef47e88 EFLAGS: 00000216
RAX: 000000000000000a RBX: ffffffffffffffda RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000020ffd000 RDI: 0000000000000003
RBP: 1ffff11007de8fd5 R08: 0000000000000005 R09: 000000000000003b
R10: 0000000000000023 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000020ffd000 R15: 0000000000000023
__do_sys_prctl+0x35e/0x1120
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f43e849fb19
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:00007f43e5a15188 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007f43e85b2f60 RCX: 00007f43e849fb19
RDX: 0000000020ffd000 RSI: 0000000000000003 RDI: 0000000000000023
RBP: 00007f43e84f9f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc3dd0f09f R14: 00007f43e5a15300 R15: 0000000000022000
WARNING: CPU: 1 PID: 3957 at kernel/events/core.c:2047 perf_group_detach+0x99e/0x12f0
Modules linked in:
CPU: 1 PID: 3957 Comm: syz-executor.4 Not tainted 6.0.0-rc6-next-20220923 #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 72 5b ee ff 65 44 8b 25 36 c6 aa 7e 31 ff 44 89 e6 e8 10 58 ee ff 45 85 e4 0f 84 0a 05 00 00 e8 52 5b ee ff <0f> 0b e9 a9 f8 ff ff e8 46 5b ee ff 65 8b 1d 0b c6 aa 7e 31 ff 89
RSP: 0018:ffff88806cf09e60 EFLAGS: 00010046
RAX: 0000000080010002 RBX: ffff88803eff85c8 RCX: 0000000000000000
RDX: ffff888017f65040 RSI: ffffffff8157af9e RDI: 0000000000000005
RBP: ffff88803eff85c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b005b R12: 0000000000000000
R13: ffff88803eff8658 R14: ffff88803d065800 R15: ffff88803eff85c8
FS: 00007f43e5a15700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe477dbd170 CR3: 000000001ad40000 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:prctl_set_mm+0x2/0x1190
Code: 5d 00 e9 ae fe ff ff e8 8c df 5d 00 e9 c7 fe ff ff e8 82 df 5d 00 e9 50 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 57 <41> 89 ff 41 56 49 be 00 00 00 00 00 fc ff df 41 55 49 89 d5 41 54
RSP: 0018:ffff88803ef47e88 EFLAGS: 00000216
RAX: 000000000000000a RBX: ffffffffffffffda RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000020ffd000 RDI: 0000000000000003
RBP: 1ffff11007de8fd5 R08: 0000000000000005 R09: 000000000000003b
R10: 0000000000000023 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000003 R14: 0000000020ffd000 R15: 0000000000000023
__do_sys_prctl+0x35e/0x1120
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f43e849fb19
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:00007f43e5a15188 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007f43e85b2f60 RCX: 00007f43e849fb19
RDX: 0000000020ffd000 RSI: 0000000000000003 RDI: 0000000000000023
RBP: 00007f43e84f9f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc3dd0f09f R14: 00007f43e5a15300 R15: 0000000000022000
irq event stamp: 888
hardirqs last enabled at (887): [] syscall_enter_from_user_mode+0x1d/0x50
hardirqs last disabled at (888): [] sysvec_call_function_single+0xb/0xc0
softirqs last enabled at (752): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (747): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
hrtimer: interrupt took 24416 ns
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun entered promiscuous mode
device syz_tun left promiscuous mode
device syz_tun left promiscuous mode
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4477 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4480 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4491 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4508 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=4518 comm=syz-executor.4
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
----------------
Code disassembly (best guess), 2 bytes skipped:
0: e9 ae fe ff ff jmpq 0xfffffeb3
5: e8 8c df 5d 00 callq 0x5ddf96
a: e9 c7 fe ff ff jmpq 0xfffffed6
f: e8 82 df 5d 00 callq 0x5ddf96
14: e9 50 ff ff ff jmpq 0xffffff69
19: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
20: 00 00 00 00
24: 66 90 xchg %ax,%ax
26: 41 57 push %r15
* 28: 41 89 ff mov %edi,%r15d <-- trapping instruction
2b: 41 56 push %r14
2d: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
34: fc ff df
37: 41 55 push %r13
39: 49 89 d5 mov %rdx,%r13
3c: 41 54 push %r12