audit: type=1400 audit(1663593808.472:8): avc: denied { kernel } for pid=3850 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
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.0.0-rc6-next-20220919 #1 Not tainted
------------------------------------------------------
syz-executor.0/3851 is trying to acquire lock:
ffffffff853fa838 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88800eaa0c20 (&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
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/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
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
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.0/3851:
#0: ffff88806ce37d18 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
#1: ffff88800eaa0c20 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
stack backtrace:
CPU: 0 PID: 3851 Comm: syz-executor.0 Not tainted 6.0.0-rc6-next-20220919 #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 5b 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:ffff88803de0f8f8 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803caab580 RSI: ffffffff81566077 RDI: 0000000000000005
RBP: ffff8880086605c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ac01b R12: ffff88800eaa0c00
R13: ffff88806ce3d140 R14: ffffffff8547c620 R15: 0000000000000002
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__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
RIP: 0033:0x7f981768cb19
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:00007f9814c02218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f981779ff68 RCX: 00007f981768cb19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f981779ff68
RBP: 00007f981779ff60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f981779ff6c
R13: 00007ffe0b5a1eaf R14: 00007f9814c02300 R15: 0000000000022000
WARNING: CPU: 0 PID: 3851 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 0 PID: 3851 Comm: syz-executor.0 Not tainted 6.0.0-rc6-next-20220919 #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 5b 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:ffff88803de0f8f8 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803caab580 RSI: ffffffff81566077 RDI: 0000000000000005
RBP: ffff8880086605c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ac01b R12: ffff88800eaa0c00
R13: ffff88806ce3d140 R14: ffffffff8547c620 R15: 0000000000000002
FS: 00007f9814c02700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc549506f4 CR3: 000000003d6c0000 CR4: 0000000000350ef0
Call Trace:
ctx_sched_out+0x8f1/0xc10
__perf_event_task_sched_out+0x6d0/0x18d0
__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
RIP: 0033:0x7f981768cb19
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:00007f9814c02218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f981779ff68 RCX: 00007f981768cb19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f981779ff68
RBP: 00007f981779ff60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f981779ff6c
R13: 00007ffe0b5a1eaf R14: 00007f9814c02300 R15: 0000000000022000
irq event stamp: 630
hardirqs last enabled at (629): [] syscall_enter_from_user_mode+0x1d/0x50
hardirqs last disabled at (630): [] __schedule+0x1225/0x2470
softirqs last enabled at (462): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (453): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000033641477741844674407370955161500000000000000000000004" or missing value
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000015446432541844674407370955161500000000000000000000004" or missing value
hrtimer: interrupt took 19577 ns
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000043761534151844674407370955161500000000000000000000004" or missing value
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000072276403511844674407370955161500000000000000000000004" or missing value
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000027662444021844674407370955161500000000000000000000004" or missing value
loop6: detected capacity change from 0 to 264192
FAT-fs (loop6): Unrecognized mount option "000000000000040336460451844674407370955161501777777777777777777777" or missing value
loop2: detected capacity change from 0 to 264192
FAT-fs (loop2): Unrecognized mount option "000000000000057477126271844674407370955161500000000000000000000004" or missing value
loop7: detected capacity change from 0 to 264192
FAT-fs (loop7): Unrecognized mount option "000000000000022332255701844674407370955161500000000000000000000004" or missing value
loop2: detected capacity change from 0 to 264192
FAT-fs (loop2): Unrecognized mount option "000000000000052777540751844674407370955161500000000000000000000004" or missing value
loop5: detected capacity change from 0 to 264192
loop7: detected capacity change from 0 to 264192
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000005330450761844674407370955161500000000000000000000004" or missing value
FAT-fs (loop7): Unrecognized mount option "000000000000065205512201844674407370955161500000000000000000000004" or missing value
FAT-fs (loop5): Unrecognized mount option "000000000000042363776221844674407370955161500000000000000000000004" or missing value
loop6: detected capacity change from 0 to 264192
FAT-fs (loop6): Unrecognized mount option "000000000000032512142371844674407370955161500000000000000000000004" or missing value
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000075325056261844674407370955161500000000000000000000004" or missing value
loop2: detected capacity change from 0 to 264192
loop3: detected capacity change from 0 to 264192
loop7: detected capacity change from 0 to 264192
loop4: detected capacity change from 0 to 264192
loop6: detected capacity change from 0 to 264192
FAT-fs (loop2): Unrecognized mount option "000000000000061271611351844674407370955161500000000000000000000004" or missing value
FAT-fs (loop3): Unrecognized mount option "000000000000074434370671844674407370955161500000000000000000000004" or missing value
FAT-fs (loop7): Unrecognized mount option "000000000000040177730601844674407370955161500000000000000000000004" or missing value
FAT-fs (loop6): Unrecognized mount option "000000000000055162235021844674407370955161500000000000000000000004" or missing value
FAT-fs (loop4): Unrecognized mount option "000000000000074674252731844674407370955161500000000000000000000004" or missing value
loop0: detected capacity change from 0 to 264192
FAT-fs (loop0): Unrecognized mount option "000000000000075124626131844674407370955161500000000000000000000004" or missing value
loop5: detected capacity change from 0 to 264192
FAT-fs (loop5): Unrecognized mount option "000000000000073070620401844674407370955161500000000000000000000004" or missing value
loop4: detected capacity change from 0 to 264192
loop3: detected capacity change from 0 to 264192
FAT-fs (loop4): Unrecognized mount option "000000000000002214466531844674407370955161500000000000000000000004" or missing value
loop5: detected capacity change from 0 to 264192
FAT-fs (loop5): Unrecognized mount option "000000000000007753454471844674407370955161500000000000000000000004" or missing value
FAT-fs (loop3): Unrecognized mount option "000000000000050175317771844674407370955161500000000000000000000004" or missing value
loop4: detected capacity change from 0 to 264192
FAT-fs (loop4): Unrecognized mount option "000000000000052332337301844674407370955161500000000000000000000004" or missing value
loop3: detected capacity change from 0 to 264192
FAT-fs (loop3): Unrecognized mount option "000000000000054560742051844674407370955161500000000000000000000004" or missing value
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
device lo entered promiscuous mode
loop0: detected capacity change from 0 to 16155
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
SELinux: Context is not valid (left unmapped).
loop0: detected capacity change from 0 to 16155
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
device lo left promiscuous mode
device lo entered promiscuous mode
loop0: detected capacity change from 0 to 16155
device lo entered promiscuous mode
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
loop0: detected capacity change from 0 to 16155
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
device lo left promiscuous mode
device lo entered promiscuous mode
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
loop0: detected capacity change from 0 to 16155
device lo left promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
blktrace: Concurrent blktraces are not allowed on sg0
device lo left promiscuous mode
device lo entered 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 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 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 entered promiscuous mode
device lo entered promiscuous mode
device lo left promiscuous mode
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
device lo entered promiscuous mode
device lo left promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
loop0: detected capacity change from 0 to 16155
device lo left promiscuous mode
device lo entered promiscuous mode
device lo entered promiscuous mode
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
device lo left promiscuous mode
device lo left promiscuous mode
device lo entered promiscuous mode
loop0: detected capacity change from 0 to 16155
device lo entered promiscuous mode
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
loop0: detected capacity change from 0 to 16155
device lo left promiscuous mode
device lo entered promiscuous mode
netlink: 'syz-executor.4': attribute type 3 has an invalid length.
netlink: 'syz-executor.4': attribute type 3 has an invalid length.
netlink: 'syz-executor.3': attribute type 3 has an invalid length.
netlink: 'syz-executor.4': attribute type 3 has an invalid length.
netlink: 'syz-executor.3': attribute type 3 has an invalid length.
netlink: 'syz-executor.4': attribute type 3 has an invalid length.
netlink: 'syz-executor.3': attribute type 3 has an invalid length.