audit: type=1400 audit(1664255398.873:8): avc: denied { kernel } for pid=3789 comm="syz-executor.3" 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.3/3791 is trying to acquire lock:
ffffffff853faaf8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88800f09c020 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
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
irqentry_exit_to_user_mode+0x5/0x30
asm_sysvec_apic_timer_interrupt+0x16/0x20
-> #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
vprintk_emit+0x1bd/0x560
vprintk+0x84/0xa0
_printk+0xba/0xf1
kauditd_hold_skb.cold+0x3f/0x4e
kauditd_send_queue+0x233/0x290
kauditd_thread+0x5da/0x9a0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
-> #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
group_sched_out.part.0+0x2c7/0x460
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__schedule+0xedd/0x2470
schedule+0xda/0x1b0
exit_to_user_mode_prepare+0x114/0x1a0
irqentry_exit_to_user_mode+0x5/0x30
asm_sysvec_apic_timer_interrupt+0x16/0x20
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.3/3791:
#0: ffff88806ce37d18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
#1: ffff88800f09c020 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
stack backtrace:
CPU: 0 PID: 3791 Comm: syz-executor.3 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:group_sched_out.part.0+0x2c7/0x460
Code: 5e 41 5f e9 5b bb ef ff e8 56 bb ef ff 65 8b 1d 1b 26 ac 7e 31 ff 89 de e8 f6 b7 ef ff 85 db 0f 84 8a 00 00 00 e8 39 bb ef ff <0f> 0b e9 a5 fe ff ff e8 2d bb ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0000:ffff88803a2bfc68 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888018895040 RSI: ffffffff81564fb7 RDI: 0000000000000005
RBP: ffff888008668b90 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f09c000
R13: ffff88806ce3d140 R14: ffffffff8547d1a0 R15: 0000000000000002
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__schedule+0xedd/0x2470
schedule+0xda/0x1b0
exit_to_user_mode_prepare+0x114/0x1a0
irqentry_exit_to_user_mode+0x5/0x30
asm_sysvec_apic_timer_interrupt+0x16/0x20
RIP: 0033:0x7ffcc71b88f1
Code: 48 8d 15 b2 e7 ff ff 81 3d ac b7 ff ff ff ff ff 7f 48 0f 44 c2 48 8b 40 20 48 85 ff 74 03 48 89 07 c3 0f 1f 80 00 00 00 00 55 <48> 89 e5 41 54 53 48 83 ec 10 83 ff 0f 0f 87 b2 00 00 00 b8 01 00
RSP: 002b:00007f4b97ea2170 EFLAGS: 00000206
RAX: 00007ffcc71b88f0 RBX: 0000000000000003 RCX: 00000000000038ca
RDX: 0000000000000000 RSI: 00007f4b97ea21f0 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f4b97ea21f0
R13: 00007ffcc719292f R14: 00007f4b97ea2300 R15: 0000000000022000
loop3: detected capacity change from 0 to 2048
WARNING: CPU: 0 PID: 3791 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 0 PID: 3791 Comm: syz-executor.3 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:group_sched_out.part.0+0x2c7/0x460
Code: 5e 41 5f e9 5b bb ef ff e8 56 bb ef ff 65 8b 1d 1b 26 ac 7e 31 ff 89 de e8 f6 b7 ef ff 85 db 0f 84 8a 00 00 00 e8 39 bb ef ff <0f> 0b e9 a5 fe ff ff e8 2d bb ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0000:ffff88803a2bfc68 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888018895040 RSI: ffffffff81564fb7 RDI: 0000000000000005
RBP: ffff888008668b90 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f09c000
R13: ffff88806ce3d140 R14: ffffffff8547d1a0 R15: 0000000000000002
FS: 00007f4b97ea2700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0249a8ee0 CR3: 000000000dc72000 CR4: 0000000000350ef0
Call Trace:
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__schedule+0xedd/0x2470
schedule+0xda/0x1b0
exit_to_user_mode_prepare+0x114/0x1a0
irqentry_exit_to_user_mode+0x5/0x30
asm_sysvec_apic_timer_interrupt+0x16/0x20
RIP: 0033:0x7ffcc71b88f1
Code: 48 8d 15 b2 e7 ff ff 81 3d ac b7 ff ff ff ff ff 7f 48 0f 44 c2 48 8b 40 20 48 85 ff 74 03 48 89 07 c3 0f 1f 80 00 00 00 00 55 <48> 89 e5 41 54 53 48 83 ec 10 83 ff 0f 0f 87 b2 00 00 00 b8 01 00
RSP: 002b:00007f4b97ea2170 EFLAGS: 00000206
RAX: 00007ffcc71b88f0 RBX: 0000000000000003 RCX: 00000000000038ca
RDX: 0000000000000000 RSI: 00007f4b97ea21f0 RDI: 0000000000000001
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f4b97ea21f0
R13: 00007ffcc719292f R14: 00007f4b97ea2300 R15: 0000000000022000
irq event stamp: 558
hardirqs last enabled at (557): [] asm_sysvec_apic_timer_interrupt+0x16/0x20
hardirqs last disabled at (558): [] __schedule+0x1225/0x2470
softirqs last enabled at (552): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (489): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir439925060/syzkaller.SMDQUe/1/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop3): unmounting filesystem.
loop3: detected capacity change from 0 to 2048
hrtimer: interrupt took 18665 ns
loop5: detected capacity change from 0 to 256
EXT4-fs warning (device loop3): ext4_multi_mount_protect:385: Unable to create kmmpd thread for loop3.
loop5: detected capacity change from 0 to 40
=======================================================
WARNING: The mand mount option has been deprecated and
and is ignored by this kernel. Remove the mand
option from the mount to silence this warning.
=======================================================
loop3: detected capacity change from 0 to 2048
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir439925060/syzkaller.SMDQUe/3/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop3): unmounting filesystem.
loop5: detected capacity change from 0 to 40
syz-executor.5 (3873) used greatest stack depth: 24088 bytes left
Bluetooth: hci0: Opcode 0x c03 failed: -110
Bluetooth: hci1: Opcode 0x c03 failed: -110
Bluetooth: hci6: Opcode 0x c03 failed: -110
Bluetooth: hci3: Opcode 0x c03 failed: -110