audit: type=1400 audit(1663002807.554:8): avc: denied { kernel } for pid=3680 comm="syz-executor.1" 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.1/3681 is trying to acquire lock:
ffffffff853fa878 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88800f164820 (&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
vt_ioctl+0x2822/0x2ca0
tty_ioctl+0x7c4/0x1700
__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.1/3681:
#0: ffff88806ce37cd8 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
#1: ffff88800f164820 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
stack backtrace:
CPU: 0 PID: 3681 Comm: syz-executor.1 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:ffff88801de37c48 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888018a68000 RSI: ffffffff81566027 RDI: 0000000000000005
RBP: ffff888008660000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865aa01b R12: ffff88800f164800
R13: ffff88806ce3d100 R14: ffffffff8547c7c0 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: 0033:0x7fd0ac84ab19
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:00007fd0a9dc0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fd0ac95df68 RCX: 00007fd0ac84ab19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd0ac95df6c
RBP: 00007fd0ac95df60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fd0ac95df6c
R13: 00007ffd47041ebf R14: 00007fd0a9dc0300 R15: 0000000000022000
WARNING: CPU: 0 PID: 3681 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 0 PID: 3681 Comm: syz-executor.1 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:ffff88801de37c48 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888018a68000 RSI: ffffffff81566027 RDI: 0000000000000005
RBP: ffff888008660000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865aa01b R12: ffff88800f164800
R13: ffff88806ce3d100 R14: ffffffff8547c7c0 R15: 0000000000000002
FS: 00007fd0a9dc0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562038a7a4c8 CR3: 000000000d70a000 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
syscall_exit_to_user_mode+0x19/0x40
do_syscall_64+0x48/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd0ac84ab19
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:00007fd0a9dc0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fd0ac95df68 RCX: 00007fd0ac84ab19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd0ac95df6c
RBP: 00007fd0ac95df60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 00007fd0ac95df6c
R13: 00007ffd47041ebf R14: 00007fd0a9dc0300 R15: 0000000000022000
irq event stamp: 594
hardirqs last enabled at (593): [] exit_to_user_mode_prepare+0x109/0x1a0
hardirqs last disabled at (594): [] __schedule+0x1225/0x2470
softirqs last enabled at (342): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (293): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
loop6: detected capacity change from 0 to 264192
hrtimer: interrupt took 18936 ns
loop2: detected capacity change from 0 to 128
loop6: detected capacity change from 0 to 264192
loop2: detected capacity change from 0 to 128
loop2: detected capacity change from 0 to 128
loop2: detected capacity change from 0 to 128
loop6: detected capacity change from 0 to 264192
loop5: detected capacity change from 0 to 264192
loop0: detected capacity change from 0 to 360
loop1: detected capacity change from 0 to 368
loop6: detected capacity change from 0 to 264192
loop2: detected capacity change from 0 to 264192
loop4: detected capacity change from 0 to 130
loop3: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 184
loop0: detected capacity change from 0 to 360
loop4: detected capacity change from 0 to 136
loop3: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 608
loop0: detected capacity change from 0 to 360
loop4: detected capacity change from 0 to 3520
loop3: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 264
ISO 9660 Extensions: RRIP_1991A
loop0: detected capacity change from 0 to 360
loop3: detected capacity change from 0 to 128
loop4: detected capacity change from 0 to 760
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
loop1: detected capacity change from 0 to 264
ISO 9660 Extensions: RRIP_1991A
loop2: detected capacity change from 0 to 264192
loop7: detected capacity change from 0 to 3520
loop5: detected capacity change from 0 to 264192
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
loop4: detected capacity change from 0 to 764
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop4: detected capacity change from 0 to 764
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop1: detected capacity change from 0 to 264
ISO 9660 Extensions: RRIP_1991A
loop7: detected capacity change from 0 to 312
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
loop4: detected capacity change from 0 to 764
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop6: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 264
ISO 9660 Extensions: RRIP_1991A
loop7: detected capacity change from 0 to 128
loop4: detected capacity change from 0 to 764
loop5: detected capacity change from 0 to 264192
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
nfs4: Bad value for 'port'
loop2: detected capacity change from 0 to 264192
nfs4: Bad value for 'port'
nfs4: Bad value for 'port'
nfs4: Bad value for 'port'
loop1: detected capacity change from 0 to 3504
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
nfs4: Bad value for 'port'
loop4: detected capacity change from 0 to 3520
loop1: detected capacity change from 0 to 4728
loop0: detected capacity change from 0 to 2304
ISO 9660 Extensions: Microsoft Joliet Level 3
loop3: detected capacity change from 0 to 3528
ISO 9660 Extensions: RRIP_1991A
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
ISOFS: changing to secondary root
loop5: detected capacity change from 0 to 2320
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop4: detected capacity change from 0 to 736
ISO 9660 Extensions: RRIP_1991A
loop1: detected capacity change from 0 to 256
loop0: detected capacity change from 0 to 2304
loop5: detected capacity change from 0 to 2320
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
ISO 9660 Extensions: RRIP_1991A
loop1: detected capacity change from 0 to 764
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop6: detected capacity change from 0 to 512
loop3: detected capacity change from 0 to 264
ISO 9660 Extensions: RRIP_1991A
loop0: detected capacity change from 0 to 2304
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir542927860/syzkaller.Mh5vmD/9/file0 supports timestamps until 2038 (0x7fffffff)
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 1
CPU: 1 PID: 4187 Comm: syz-executor.1 Tainted: G W 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
should_fail.cold+0x5/0xa
_copy_from_user+0x2a/0x170
__do_sys_memfd_create+0x103/0x4e0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd0ac84ab19
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:00007fd0a9dbff48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fd0ac84ab19
RDX: 0000000000028000 RSI: 0000000000000000 RDI: 00007fd0ac8a40fb
RBP: 000000000000000f R08: 0000000000014000 R09: ffffffffffffffff
R10: 000000000000000f R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 000000000005f800 R15: 0000000020012200
EXT4-fs (loop6): unmounting filesystem.
loop2: detected capacity change from 0 to 128
loop5: detected capacity change from 0 to 2320
ISO 9660 Extensions: Microsoft Joliet Level 3
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 4198 Comm: syz-executor.3 Tainted: G W 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:
ISO 9660 Extensions:
dump_stack_lvl+0x8b/0xb3
RR
should_fail.cold+0x5/0xa
I
_copy_from_user+0x2a/0x170
P_
__do_sys_memfd_create+0x103/0x4e0
1
do_syscall_64+0x3b/0x90
99
entry_SYSCALL_64_after_hwframe+0x63/0xcd
1
RIP: 0033:0x7f85883fdb19
A
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:00007f8585972f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f85883fdb19
RDX: 0000000000021000 RSI: 0000000000000000 RDI: 00007f85884570fb
RBP: 000000000000000a R08: 0000000000010800 R09: ffffffffffffffff
R10: 000000000000000a R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 0000000000021000 R15: 0000000020011700
loop6: detected capacity change from 0 to 512
loop0: detected capacity change from 0 to 2304
ISO 9660 Extensions: Microsoft Joliet Level 3
ISOFS: changing to secondary root
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir542927860/syzkaller.Mh5vmD/10/file0 supports timestamps until 2038 (0x7fffffff)
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 4205 Comm: syz-executor.2 Tainted: G W 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
should_fail.cold+0x5/0xa
_copy_from_user+0x2a/0x170
__do_sys_memfd_create+0x103/0x4e0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff6dd8afb19
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:00007ff6dae24f48 EFLAGS: 00000246 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007ff6dd8afb19
RDX: 0000000000008800 RSI: 0000000000000000 RDI: 00007ff6dd9090fb
RBP: 0000000000000008 R08: 0000000000004400 R09: ffffffffffffffff
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000008100000
R13: 0000000020000100 R14: 0000000000010000 R15: 0000000020010d00
loop4: detected capacity change from 0 to 512
EXT4-fs (loop6): unmounting filesystem.
loop5: detected capacity change from 0 to 2320
loop6: detected capacity change from 0 to 512
EXT4-fs (loop4): mounted filesystem without journal. Quota mode: none.
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop1: detected capacity change from 0 to 764
EXT4-fs (loop4): unmounting filesystem.
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir542927860/syzkaller.Mh5vmD/11/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop6): unmounting filesystem.
loop4: detected capacity change from 0 to 640
loop6: detected capacity change from 0 to 512
loop3: detected capacity change from 0 to 264
EXT4-fs (loop4): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir895711194/syzkaller.wnMLcS/19/file0 supports timestamps until 2038 (0x7fffffff)
ISO 9660 Extensions: RRIP_1991A
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir542927860/syzkaller.Mh5vmD/12/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop4): unmounting filesystem.
loop2: detected capacity change from 0 to 128
loop1: detected capacity change from 0 to 764
EXT4-fs (loop6): unmounting filesystem.
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop4: detected capacity change from 0 to 640
loop7: detected capacity change from 0 to 4096
EXT4-fs (loop4): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir895711194/syzkaller.wnMLcS/20/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop7): mounted filesystem without journal. Quota mode: writeback.
EXT4-fs (loop7): unmounting filesystem.
loop2: detected capacity change from 0 to 128
loop3: detected capacity change from 0 to 264
loop0: detected capacity change from 0 to 2560
EXT4-fs (loop4): unmounting filesystem.
ISO 9660 Extensions: RRIP_1991A
loop7: detected capacity change from 0 to 4096
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir890918083/syzkaller.cewRQH/16/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop7): mounted filesystem without journal. Quota mode: writeback.
loop1: detected capacity change from 0 to 764
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
loop4: detected capacity change from 0 to 640
EXT4-fs (loop0): unmounting filesystem.
EXT4-fs (loop7): unmounting filesystem.
loop5: detected capacity change from 0 to 512
EXT4-fs (loop4): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir895711194/syzkaller.wnMLcS/21/file0 supports timestamps until 2038 (0x7fffffff)
loop0: detected capacity change from 0 to 2560
loop7: detected capacity change from 0 to 4096
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir890918083/syzkaller.cewRQH/17/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop4): unmounting filesystem.
EXT4-fs (loop0): unmounting filesystem.
EXT4-fs (loop7): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop5): unmounting filesystem.
loop2: detected capacity change from 0 to 128
loop0: detected capacity change from 0 to 2560
EXT4-fs (loop7): unmounting filesystem.
loop5: detected capacity change from 0 to 512
EXT4-fs (loop5): mounted filesystem without journal. Quota mode: none.
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
ext4 filesystem being mounted at /syzkaller-testdir890918083/syzkaller.cewRQH/18/file0 supports timestamps until 2038 (0x7fffffff)
loop4: detected capacity change from 0 to 640
EXT4-fs (loop5): unmounting filesystem.
EXT4-fs (loop0): unmounting filesystem.
loop1: detected capacity change from 0 to 764
ISO 9660 Extensions: Microsoft Joliet Level 3
ISO 9660 Extensions: RRIP_1991A
EXT4-fs (loop4): mounted filesystem without journal. Quota mode: writeback.
ext4 filesystem being mounted at /syzkaller-testdir895711194/syzkaller.wnMLcS/22/file0 supports timestamps until 2038 (0x7fffffff)
EXT4-fs (loop4): unmounting filesystem.
loop6: detected capacity change from 0 to 512
loop3: detected capacity change from 0 to 264
ISO 9660 Extensions: RRIP_1991A
EXT4-fs (loop6): mounted filesystem without journal. Quota mode: none.
----------------
Code disassembly (best guess), 1 bytes skipped:
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 40 00 nopl 0x0(%rax)
10: 48 89 f8 mov %rdi,%rax
13: 48 89 f7 mov %rsi,%rdi
16: 48 89 d6 mov %rdx,%rsi
19: 48 89 ca mov %rcx,%rdx
1c: 4d 89 c2 mov %r8,%r10
1f: 4d 89 c8 mov %r9,%r8
22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
27: 0f 05 syscall
* 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
2f: 73 01 jae 0x32
31: c3 retq
32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx
39: f7 d8 neg %eax
3b: 64 89 01 mov %eax,%fs:(%rcx)
3e: 48 rex.W