audit: type=1400 audit(1664504972.499:8): avc: denied { kernel } for pid=6865 comm="syz-executor.7" 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-rc7-next-20220929 #1 Not tainted
------------------------------------------------------
syz-executor.7/6870 is trying to acquire lock:
ffffffff853faab8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88800fe32820 (&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+0x4183/0x6e20
kernel_clone+0xe7/0x890
user_mode_thread+0xad/0xf0
rest_init+0x24/0x250
arch_call_rest_init+0xf/0x14
start_kernel+0x4c6/0x4eb
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+0x785/0x16b0
__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
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
syscall_exit_to_user_mode+0x19/0x40
do_syscall_64+0x48/0x90
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.7/6870:
#0: ffff88806cf37e98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
#1: ffff88800fe32820 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
stack backtrace:
CPU: 1 PID: 6870 Comm: syz-executor.7 Not tainted 6.0.0-rc7-next-20220929 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
<TASK>
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 8b ae ef ff e8 86 ae ef ff 65 8b 1d 6b 17 ac 7e 31 ff 89 de e8 26 ab ef ff 85 db 0f 84 8a 00 00 00 e8 69 ae ef ff <0f> 0b e9 a5 fe ff ff e8 5d ae ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0018:ffff88803f41fc48 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803f410000 RSI: ffffffff81565e67 RDI: 0000000000000005
RBP: ffff88803f420000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b405b R12: ffff88800fe32800
R13: ffff88806cf3d2c0 R14: ffffffff8547d040 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
syscall_exit_to_user_mode+0x19/0x40
do_syscall_64+0x48/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd8f64acb19
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:00007fd8f3a22218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fd8f65bff68 RCX: 00007fd8f64acb19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd8f65bff6c
RBP: 00007fd8f65bff60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fd8f65bff6c
R13: 00007ffe11c1487f R14: 00007fd8f3a22300 R15: 0000000000022000
</TASK>
WARNING: CPU: 1 PID: 6870 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 1 PID: 6870 Comm: syz-executor.7 Not tainted 6.0.0-rc7-next-20220929 #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 8b ae ef ff e8 86 ae ef ff 65 8b 1d 6b 17 ac 7e 31 ff 89 de e8 26 ab ef ff 85 db 0f 84 8a 00 00 00 e8 69 ae ef ff <0f> 0b e9 a5 fe ff ff e8 5d ae ef ff 48 8d 7d 10 48 b8 00 00 00 00
RSP: 0018:ffff88803f41fc48 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88803f410000 RSI: ffffffff81565e67 RDI: 0000000000000005
RBP: ffff88803f420000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b405b R12: ffff88800fe32800
R13: ffff88806cf3d2c0 R14: ffffffff8547d040 R15: 0000000000000002
FS: 00007fd8f3a22700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d21000 CR3: 0000000039ab6000 CR4: 0000000000350ee0
Call Trace:
<TASK>
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
syscall_exit_to_user_mode+0x19/0x40
do_syscall_64+0x48/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd8f64acb19
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:00007fd8f3a22218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fd8f65bff68 RCX: 00007fd8f64acb19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd8f65bff6c
RBP: 00007fd8f65bff60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fd8f65bff6c
R13: 00007ffe11c1487f R14: 00007fd8f3a22300 R15: 0000000000022000
</TASK>
irq event stamp: 642
hardirqs last enabled at (641): [<ffffffff8133e8c9>] exit_to_user_mode_prepare+0x109/0x1a0
hardirqs last disabled at (642): [<ffffffff8425a985>] __schedule+0x1225/0x2470
softirqs last enabled at (500): [<ffffffff8116fa0b>] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (495): [<ffffffff8116fa0b>] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
hrtimer: interrupt took 14127 ns
loop7: detected capacity change from 0 to 256
loop3: detected capacity change from 0 to 4096
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
audit: type=1400 audit(1664504974.374:9): avc: denied { write } for pid=7019 comm="syz-executor.7" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop3): unmounting filesystem.
loop7: detected capacity change from 0 to 256
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop3: detected capacity change from 0 to 4096
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
loop7: detected capacity change from 0 to 256
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
EXT4-fs (loop3): unmounting filesystem.
loop3: detected capacity change from 0 to 4096
loop7: detected capacity change from 0 to 256
loop4: detected capacity change from 0 to 256
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop0: detected capacity change from 0 to 256
EXT4-fs (loop3): unmounting filesystem.
loop1: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop4: detected capacity change from 0 to 256
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop7: detected capacity change from 0 to 256
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop3: detected capacity change from 0 to 4096
EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop3): unmounting filesystem.
loop0: detected capacity change from 0 to 256
loop6: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop7: detected capacity change from 0 to 256
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop4: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 256
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop1: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 256
loop0: detected capacity change from 0 to 256
loop7: detected capacity change from 0 to 256
loop6: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop2: detected capacity change from 0 to 256
loop3: detected capacity change from 0 to 256
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop4: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 256
loop0: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop1: detected capacity change from 0 to 256
loop6: detected capacity change from 0 to 256
FAT-fs (loop6): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop3: detected capacity change from 0 to 256
FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop0: detected capacity change from 0 to 256
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop2: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop5: detected capacity change from 0 to 256
loop4: detected capacity change from 0 to 256
loop3: detected capacity change from 0 to 256
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop0: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop2: detected capacity change from 0 to 256
FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
loop4: detected capacity change from 0 to 256
loop5: detected capacity change from 0 to 256
FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
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
INFO: task rcu_gp:3 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:rcu_gp state:I stack:30328 pid:3 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task rcu_par_gp:4 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:rcu_par_gp state:I stack:30944 pid:4 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task slub_flushwq:5 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:slub_flushwq state:I stack:30944 pid:5 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task netns:6 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:netns state:I stack:30944 pid:6 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task kworker/0:0H:8 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0H state:I stack:29760 pid:8 ppid:2 flags:0x00004000
Workqueue: 0x0 (events_highpri)
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
worker_thread+0x15f/0x1260
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task mm_percpu_wq:10 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:mm_percpu_wq state:I stack:30944 pid:10 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task rcu_tasks_kthre:11 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:rcu_tasks_kthre state:I stack:29272 pid:11 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rcu_tasks_one_gp+0x3db/0xc10
rcu_tasks_kthread+0x80/0xa0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task kworker/1:0H:21 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0H state:I stack:29376 pid:21 ppid:2 flags:0x00004000
Workqueue: 0x0 (kblockd)
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
worker_thread+0x15f/0x1260
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task inet_frag_wq:23 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:inet_frag_wq state:I stack:30704 pid:23 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: task writeback:28 blocked for more than 143 seconds.
Tainted: G W 6.0.0-rc7-next-20220929 #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:writeback state:I stack:30176 pid:28 ppid:2 flags:0x00004000
Call Trace:
<TASK>
__schedule+0x893/0x2470
schedule+0xda/0x1b0
rescuer_thread+0x851/0xdb0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
</TASK>
INFO: lockdep is turned off.
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
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
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
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
loop6: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop6): unmounting filesystem.
loop6: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop6): unmounting filesystem.
loop6: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop6): unmounting filesystem.
loop6: detected capacity change from 0 to 512
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
EXT4-fs (loop6): unmounting filesystem.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.