audit: type=1400 audit(1663727092.736:8): avc: denied { kernel } for pid=3832 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-20220920 #1 Not tainted
------------------------------------------------------
syz-executor.4/3835 is trying to acquire lock:
ffffffff853faab8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff888038f84820 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0
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+0x53b/0x18d0
__schedule+0xedd/0x2470
schedule+0xda/0x1b0
exit_to_user_mode_prepare+0x114/0x1a0
syscall_exit_to_user_mode+0x19/0x40
do_syscall_64+0x48/0x90
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
do_con_write+0xc05/0x1d50
con_write+0x21/0x40
n_tty_write+0x4d4/0xfe0
file_tty_write.constprop.0+0x49c/0x8f0
vfs_write+0x9c3/0xd90
ksys_write+0x127/0x250
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
event_filter_match+0x422/0x660
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
kmem_cache_alloc+0x2d9/0x3e0
__create_object+0x3d/0xc10
kmem_cache_alloc_lru+0x2ce/0x720
shmem_alloc_inode+0x23/0x50
alloc_inode+0x63/0x240
new_inode+0x21/0x1e0
shmem_get_inode+0x191/0xe30
shmem_fill_super+0x6fc/0xdd0
get_tree_nodev+0xd2/0x1d0
vfs_get_tree+0x8e/0x300
path_mount+0x1310/0x1e20
__x64_sys_mount+0x282/0x300
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 ***
3 locks held by syz-executor.4/3835:
#0: ffff88800cf940e0 (&type->s_umount_key/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb00
#1: ffff88806ce3d160 (&cpuctx_lock){....}-{2:2}, at: __perf_event_task_sched_in+0x28f/0x6e0
#2: ffff888038f84820 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0
stack backtrace:
CPU: 0 PID: 3835 Comm: syz-executor.4 Not tainted 6.0.0-rc6-next-20220920 #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:event_filter_match+0x422/0x660
Code: 00 00 00 e9 7c fc ff ff e8 2b 1b f1 ff 65 8b 2d a0 74 ad 7e 31 ff 89 ee e8 cb 17 f1 ff 85 ed 0f 84 ef 00 00 00 e8 0e 1b f1 ff <0f> 0b eb 9f e8 e5 88 23 00 e9 17 fc ff ff e8 fb 1a f1 ff 48 8d 7b
RSP: 0018:ffff888036607680 EFLAGS: 00010006
RAX: 0000000040000002 RBX: ffff88802dcc0000 RCX: 0000000000000000
RDX: ffff88803f651ac0 RSI: ffffffff81550132 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ae01b R12: ffff88802dcc0220
R13: 0000000000000000 R14: ffff88802dcc00a8 R15: ffff88802dcc0220
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
kmem_cache_alloc+0x2d9/0x3e0
__create_object+0x3d/0xc10
kmem_cache_alloc_lru+0x2ce/0x720
shmem_alloc_inode+0x23/0x50
alloc_inode+0x63/0x240
new_inode+0x21/0x1e0
shmem_get_inode+0x191/0xe30
shmem_fill_super+0x6fc/0xdd0
get_tree_nodev+0xd2/0x1d0
vfs_get_tree+0x8e/0x300
path_mount+0x1310/0x1e20
__x64_sys_mount+0x282/0x300
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc69376c04a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007fc690cdffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc69376c04a
RDX: 0000000020000000 RSI: 0000000020000580 RDI: 0000000000000000
RBP: 00007fc690ce0040 R08: 00007fc690ce0040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000580 R14: 00007fc690ce0000 R15: 0000000020000840
WARNING: CPU: 0 PID: 3835 at kernel/events/core.c:2233 event_filter_match+0x422/0x660
Modules linked in:
CPU: 0 PID: 3835 Comm: syz-executor.4 Not tainted 6.0.0-rc6-next-20220920 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:event_filter_match+0x422/0x660
Code: 00 00 00 e9 7c fc ff ff e8 2b 1b f1 ff 65 8b 2d a0 74 ad 7e 31 ff 89 ee e8 cb 17 f1 ff 85 ed 0f 84 ef 00 00 00 e8 0e 1b f1 ff <0f> 0b eb 9f e8 e5 88 23 00 e9 17 fc ff ff e8 fb 1a f1 ff 48 8d 7b
RSP: 0018:ffff888036607680 EFLAGS: 00010006
RAX: 0000000040000002 RBX: ffff88802dcc0000 RCX: 0000000000000000
RDX: ffff88803f651ac0 RSI: ffffffff81550132 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ae01b R12: ffff88802dcc0220
R13: 0000000000000000 R14: ffff88802dcc00a8 R15: ffff88802dcc0220
FS: 00007fc690ce0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57e4b22028 CR3: 0000000036706000 CR4: 0000000000350ef0
Call Trace:
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
kmem_cache_alloc+0x2d9/0x3e0
__create_object+0x3d/0xc10
kmem_cache_alloc_lru+0x2ce/0x720
shmem_alloc_inode+0x23/0x50
alloc_inode+0x63/0x240
new_inode+0x21/0x1e0
shmem_get_inode+0x191/0xe30
shmem_fill_super+0x6fc/0xdd0
get_tree_nodev+0xd2/0x1d0
vfs_get_tree+0x8e/0x300
path_mount+0x1310/0x1e20
__x64_sys_mount+0x282/0x300
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc69376c04a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007fc690cdffa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc69376c04a
RDX: 0000000020000000 RSI: 0000000020000580 RDI: 0000000000000000
RBP: 00007fc690ce0040 R08: 00007fc690ce0040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000580 R14: 00007fc690ce0000 R15: 0000000020000840
irq event stamp: 928
hardirqs last enabled at (927): [] obj_cgroup_charge+0x24d/0x870
hardirqs last disabled at (928): [] __schedule+0x1225/0x2470
softirqs last enabled at (916): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (911): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
Bluetooth: hci5: command 0x0409 tx timeout
Bluetooth: hci7: command 0x0409 tx timeout
Bluetooth: hci2: command 0x0409 tx timeout
Bluetooth: hci4: command 0x0409 tx timeout
Bluetooth: hci3: command 0x0409 tx timeout
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3 sclass=netlink_route_socket pid=3855 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3 sclass=netlink_route_socket pid=3859 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3 sclass=netlink_route_socket pid=3869 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3 sclass=netlink_route_socket pid=3878 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3 sclass=netlink_route_socket pid=3887 comm=syz-executor.4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=3 sclass=netlink_route_socket pid=3898 comm=syz-executor.4
Bluetooth: hci0: command 0x041b tx timeout
Bluetooth: hci1: command 0x041b tx timeout
Bluetooth: hci3: command 0x041b tx timeout
Bluetooth: hci4: command 0x041b tx timeout
Bluetooth: hci2: command 0x041b tx timeout
Bluetooth: hci7: command 0x041b tx timeout
Bluetooth: hci5: command 0x041b tx timeout
Bluetooth: hci0: command 0x040f tx timeout
Bluetooth: hci1: command 0x040f tx timeout
Bluetooth: hci5: command 0x040f tx timeout
Bluetooth: hci7: command 0x040f tx timeout
Bluetooth: hci2: command 0x040f tx timeout
Bluetooth: hci4: command 0x040f tx timeout
Bluetooth: hci3: command 0x040f tx timeout
Bluetooth: hci0: command 0x0419 tx timeout
Bluetooth: hci1: command 0x0419 tx timeout
Bluetooth: hci3: command 0x0419 tx timeout
Bluetooth: hci4: command 0x0419 tx timeout
Bluetooth: hci2: command 0x0419 tx timeout
Bluetooth: hci7: command 0x0419 tx timeout
Bluetooth: hci5: command 0x0419 tx timeout