audit: type=1400 audit(1662991743.039:8): avc: denied { kernel } for pid=3730 comm="syz-executor.5" 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.5/3732 is trying to acquire lock:
ffffffff853fa878 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff8880101c7820 (&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
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+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
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
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
__mutex_lock+0xa3/0x14d0
__do_sys_perf_event_open+0x1eec/0x32c0
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.5/3732:
#0: ffff88806cf37cd8 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
#1: ffff8880101c7820 (&ctx->lock){-.-.}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
stack backtrace:
CPU: 1 PID: 3732 Comm: syz-executor.5 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:group_sched_out.part.0+0x2c7/0x460
Code: 5e 41 5f e9 3b b7 ef ff e8 36 b7 ef ff 65 8b 1d ab 15 ac 7e 31 ff 89 de e8 d6 b3 ef ff 85 db 0f 84 8a 00 00 00 e8 19 b7 ef ff <0f> 0b e9 a5 fe ff ff e8 0d b7 ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0018:ffff88803e417978 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88800d6c3580 RSI: ffffffff81566027 RDI: 0000000000000005
RBP: ffff88803e4185c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880101c7800
R13: ffff88806cf3d100 R14: ffffffff8547c7c0 R15: 0000000000000002
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__schedule+0xedd/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
__mutex_lock+0xa3/0x14d0
__do_sys_perf_event_open+0x1eec/0x32c0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcd6a664b19
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:00007fcd67bda188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fcd6a777f60 RCX: 00007fcd6a664b19
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007fcd6a6bef6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff2f2ab1cf R14: 00007fcd67bda300 R15: 0000000000022000
WARNING: CPU: 1 PID: 3732 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 1 PID: 3732 Comm: syz-executor.5 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:group_sched_out.part.0+0x2c7/0x460
Code: 5e 41 5f e9 3b b7 ef ff e8 36 b7 ef ff 65 8b 1d ab 15 ac 7e 31 ff 89 de e8 d6 b3 ef ff 85 db 0f 84 8a 00 00 00 e8 19 b7 ef ff <0f> 0b e9 a5 fe ff ff e8 0d b7 ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0018:ffff88803e417978 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88800d6c3580 RSI: ffffffff81566027 RDI: 0000000000000005
RBP: ffff88803e4185c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880101c7800
R13: ffff88806cf3d100 R14: ffffffff8547c7c0 R15: 0000000000000002
FS: 00007fcd67bda700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd6a774000 CR3: 0000000030e90000 CR4: 0000000000350ee0
Call Trace:
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__schedule+0xedd/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
__mutex_lock+0xa3/0x14d0
__do_sys_perf_event_open+0x1eec/0x32c0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcd6a664b19
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:00007fcd67bda188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fcd6a777f60 RCX: 00007fcd6a664b19
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007fcd6a6bef6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff2f2ab1cf R14: 00007fcd67bda300 R15: 0000000000022000
irq event stamp: 2738
hardirqs last enabled at (2737): [] asm_sysvec_apic_timer_interrupt+0x16/0x20
hardirqs last disabled at (2738): [] __schedule+0x1225/0x2470
softirqs last enabled at (2722): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (1153): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
hrtimer: interrupt took 18385 ns
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'.
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
loop1: detected capacity change from 0 to 8
FAT-fs (loop1): Invalid FSINFO signature: 0x41615252, 0x00000000 (sector = 1)
FAT-fs (loop1): FAT read failed (blocknr 32)
loop1: detected capacity change from 0 to 8
FAT-fs (loop1): Invalid FSINFO signature: 0x41615252, 0x00000000 (sector = 1)
FAT-fs (loop1): FAT read failed (blocknr 32)
loop1: detected capacity change from 0 to 8
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
FAT-fs (loop1): Invalid FSINFO signature: 0x41615252, 0x00000000 (sector = 1)
misc raw-gadget: fail, usb_gadget_register_driver returned -16
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'.
FAT-fs (loop1): FAT read failed (blocknr 32)
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'.
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
loop1: detected capacity change from 0 to 8
misc raw-gadget: fail, usb_gadget_register_driver returned -16
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.7'.
FAT-fs (loop1): Invalid FSINFO signature: 0x41615252, 0x00000000 (sector = 1)
FAT-fs (loop1): FAT read failed (blocknr 32)
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.0'.
loop1: detected capacity change from 0 to 8
FAT-fs (loop1): Invalid FSINFO signature: 0x41615252, 0x00000000 (sector = 1)
FAT-fs (loop1): FAT read failed (blocknr 32)
loop0: detected capacity change from 0 to 352
loop0: detected capacity change from 0 to 352
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16
loop0: detected capacity change from 0 to 352
loop1: detected capacity change from 0 to 2560
loop0: detected capacity change from 0 to 352
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir194034251/syzkaller.Lv5c1z/7/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): unmounting filesystem.
loop1: detected capacity change from 0 to 2560
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir194034251/syzkaller.Lv5c1z/8/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): unmounting filesystem.
loop1: detected capacity change from 0 to 2560
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir194034251/syzkaller.Lv5c1z/9/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): unmounting filesystem.
EXT4-fs warning (device sda): ext4_group_extend:1850: can't shrink FS - resize aborted
loop1: detected capacity change from 0 to 2560
EXT4-fs (loop1): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir194034251/syzkaller.Lv5c1z/10/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop1): unmounting filesystem.
EXT4-fs warning (device sda): ext4_group_extend:1850: can't shrink FS - resize aborted
EXT4-fs warning (device sda): ext4_group_extend:1850: can't shrink FS - resize aborted
=======================================================
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.
=======================================================
EXT4-fs warning (device sda): ext4_group_extend:1850: can't shrink FS - resize aborted
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
device lo entered promiscuous mode
loop6: detected capacity change from 0 to 136
isofs_fill_super: get root inode failed
loop6: detected capacity change from 0 to 136
isofs_fill_super: get root inode failed
loop6: detected capacity change from 0 to 136
isofs_fill_super: get root inode failed
loop6: detected capacity change from 0 to 136
isofs_fill_super: get root inode failed
loop6: detected capacity change from 0 to 136
isofs_fill_super: get root inode failed
audit: type=1400 audit(1662991753.051:9): avc: denied { write } for pid=4360 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1