audit: type=1400 audit(1664505427.409:8): avc: denied { kernel } for pid=3827 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-rc7-next-20220929 #1 Not tainted
------------------------------------------------------
syz-executor.3/3830 is trying to acquire lock:
ffffffff853faab8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88800ff48c20 (&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+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
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.3/3830:
#0: ffff88806ce37e98 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x1cf/0x2470
#1: ffff88800ff48c20 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_out+0x53b/0x18d0
stack backtrace:
CPU: 0 PID: 3830 Comm: syz-executor.3 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:
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:ffff88803e6778f8 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888017515040 RSI: ffffffff81565e67 RDI: 0000000000000005
RBP: ffff888008660000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b401b R12: ffff88800ff48c00
R13: ffff88806ce3d2c0 R14: ffffffff8547d040 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: 0033:0x7f07cd458b19
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:00007f07ca9ce218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f07cd56bf68 RCX: 00007f07cd458b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f07cd56bf68
RBP: 00007f07cd56bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f07cd56bf6c
R13: 00007ffcc295446f R14: 00007f07ca9ce300 R15: 0000000000022000
WARNING: CPU: 0 PID: 3830 at kernel/events/core.c:2309 group_sched_out.part.0+0x2c7/0x460
Modules linked in:
CPU: 0 PID: 3830 Comm: syz-executor.3 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:ffff88803e6778f8 EFLAGS: 00010006
RAX: 0000000040000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff888017515040 RSI: ffffffff81565e67 RDI: 0000000000000005
RBP: ffff888008660000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b401b R12: ffff88800ff48c00
R13: ffff88806ce3d2c0 R14: ffffffff8547d040 R15: 0000000000000002
FS: 00007f07ca9ce700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5270cb0028 CR3: 000000000f906000 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: 0033:0x7f07cd458b19
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:00007f07ca9ce218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f07cd56bf68 RCX: 00007f07cd458b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f07cd56bf68
RBP: 00007f07cd56bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f07cd56bf6c
R13: 00007ffcc295446f R14: 00007f07ca9ce300 R15: 0000000000022000
irq event stamp: 878
hardirqs last enabled at (877): [] syscall_enter_from_user_mode+0x1d/0x50
hardirqs last disabled at (878): [] __schedule+0x1225/0x2470
softirqs last enabled at (724): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (715): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
9pnet_fd: p9_fd_create_unix (3834): problem connecting socket: ./file0/file0: -20
9pnet_fd: p9_fd_create_unix (3835): problem connecting socket: ./file0/file0: -20
9pnet_fd: p9_fd_create_unix (3841): problem connecting socket: ./file0/file0: -20
9pnet_fd: p9_fd_create_unix (3845): problem connecting socket: ./file0/file0: -20
9pnet_fd: p9_fd_create_unix (3854): problem connecting socket: ./file0/file0: -20
hrtimer: interrupt took 19055 ns
loop0: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop0): Directory bread(block 64) failed
FAT-fs (loop0): Directory bread(block 65) failed
FAT-fs (loop0): Directory bread(block 66) failed
FAT-fs (loop0): Directory bread(block 67) failed
FAT-fs (loop0): Directory bread(block 68) failed
FAT-fs (loop0): Directory bread(block 69) failed
FAT-fs (loop0): Directory bread(block 70) failed
FAT-fs (loop0): Directory bread(block 71) failed
FAT-fs (loop0): Directory bread(block 72) failed
FAT-fs (loop0): Directory bread(block 73) failed
ISOFS: Unable to identify CD-ROM format.
ISOFS: Unable to identify CD-ROM format.
loop0: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop0): Directory bread(block 64) failed
FAT-fs (loop0): Directory bread(block 65) failed
FAT-fs (loop0): Directory bread(block 66) failed
FAT-fs (loop0): Directory bread(block 67) failed
FAT-fs (loop0): Directory bread(block 68) failed
FAT-fs (loop0): Directory bread(block 69) failed
FAT-fs (loop0): Directory bread(block 70) failed
FAT-fs (loop0): Directory bread(block 71) failed
FAT-fs (loop0): Directory bread(block 72) failed
FAT-fs (loop0): Directory bread(block 73) failed
tmpfs: Bad value for 'mpol'
ISOFS: Unable to identify CD-ROM format.
tmpfs: Bad value for 'mpol'
loop0: detected capacity change from 0 to 256
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
tmpfs: Bad value for 'mpol'
FAT-fs (loop0): Directory bread(block 64) failed
FAT-fs (loop0): Directory bread(block 65) failed
FAT-fs (loop0): Directory bread(block 66) failed
FAT-fs (loop0): Directory bread(block 67) failed
FAT-fs (loop0): Directory bread(block 68) failed
FAT-fs (loop0): Directory bread(block 69) failed
FAT-fs (loop0): Directory bread(block 70) failed
FAT-fs (loop0): Directory bread(block 71) failed
FAT-fs (loop0): Directory bread(block 72) failed
FAT-fs (loop0): Directory bread(block 73) failed
ISOFS: Unable to identify CD-ROM format.
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 256
tmpfs: Bad value for 'mpol'
tmpfs: Bad value for 'mpol'
tmpfs: Bad value for 'mpol'
FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
ISOFS: Unable to identify CD-ROM format.
FAT-fs (loop0): Directory bread(block 64) failed
FAT-fs (loop0): Directory bread(block 65) failed
FAT-fs (loop0): Directory bread(block 66) failed
FAT-fs (loop0): Directory bread(block 67) failed
FAT-fs (loop0): Directory bread(block 68) failed
FAT-fs (loop0): Directory bread(block 69) failed
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
FAT-fs (loop0): Directory bread(block 70) failed
FAT-fs (loop0): Directory bread(block 71) failed
FAT-fs (loop0): Directory bread(block 72) failed
FAT-fs (loop0): Directory bread(block 73) failed
tmpfs: Bad value for 'mpol'
tmpfs: Bad value for 'mpol'
tmpfs: Bad value for 'mpol'
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
tmpfs: Bad value for 'mpol'
tmpfs: Bad value for 'mpol'
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
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
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.
loop2: detected capacity change from 0 to 40
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
loop4: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
loop4: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
loop4: detected capacity change from 0 to 40
loop2: detected capacity change from 0 to 40
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=9 sclass=netlink_xfrm_socket pid=4255 comm=syz-executor.7
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=9 sclass=netlink_xfrm_socket pid=4272 comm=syz-executor.7
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=9 sclass=netlink_xfrm_socket pid=4285 comm=syz-executor.7
SELinux: unrecognized netlink message: protocol=6 nlmsg_type=9 sclass=netlink_xfrm_socket pid=4292 comm=syz-executor.7
Attempt to set a LOCK_MAND lock via flock(2). This support has been removed and the request ignored.
mmap: syz-executor.3 (4296) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst.
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
loop6: detected capacity change from 0 to 180
loop0: detected capacity change from 0 to 1348
loop6: detected capacity change from 0 to 180
EXT4-fs warning (device sda): __ext4_ioctl:1238: Setting inode version is not supported with metadata_csum enabled.
loop0: detected capacity change from 0 to 1348
loop6: detected capacity change from 0 to 180
loop6: detected capacity change from 0 to 180
audit: type=1400 audit(1664505434.119:9): avc: denied { block_suspend } for pid=4502 comm="syz-executor.2" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1
loop0: detected capacity change from 0 to 1348
loop0: detected capacity change from 0 to 1348