audit: type=1400 audit(1663243813.295:8): avc: denied { kernel } for pid=3705 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-rc5-next-20220915 #1 Not tainted
------------------------------------------------------
syz-executor.3/3708 is trying to acquire lock:
ffffffff853fa878 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88801d7e5820 (&ctx->lock){-...}-{2:2}, at: event_function+0x182/0x3d0
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
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
perf_group_detach+0x99e/0x12f0
__perf_remove_from_context+0x71e/0xb20
event_function+0x297/0x3d0
remote_function+0x125/0x1b0
__flush_smp_call_function_queue+0x1df/0x5a0
__sysvec_call_function_single+0x92/0x3a0
sysvec_call_function_single+0x89/0xc0
asm_sysvec_call_function_single+0x16/0x20
perf_trace_lock+0x34e/0x560
lock_release+0x4ae/0x750
avc_has_perm_noaudit+0x1ea/0x3a0
avc_has_perm+0xb1/0x1b0
selinux_socket_create+0x20f/0x5c0
security_socket_create+0x62/0xc0
__sock_create+0x87/0x760
__sys_socket+0x133/0x250
__x64_sys_socket+0x6f/0xb0
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 ***
3 locks held by syz-executor.3/3708:
#0: ffffffff85406fa0 (rcu_read_lock){....}-{1:2}, at: avc_has_perm_noaudit+0xa2/0x3a0
#1: ffff88806cf3d120 (&cpuctx_lock){-...}-{2:2}, at: event_function+0x16f/0x3d0
#2: ffff88801d7e5820 (&ctx->lock){-...}-{2:2}, at: event_function+0x182/0x3d0
stack backtrace:
CPU: 1 PID: 3708 Comm: syz-executor.3 Not tainted 6.0.0-rc5-next-20220915 #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:perf_group_detach+0x99e/0x12f0
Code: 85 d5 f8 ff ff e8 22 57 ee ff 65 44 8b 25 96 b5 aa 7e 31 ff 44 89 e6 e8 c0 53 ee ff 45 85 e4 0f 84 0a 05 00 00 e8 02 57 ee ff <0f> 0b e9 a9 f8 ff ff e8 f6 56 ee ff 65 8b 1d 6b b5 aa 7e 31 ff 89
RSP: 0018:ffff88806cf09e60 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff8880403a85c8 RCX: 0000000000000000
RDX: ffff888017ef0000 RSI: ffffffff8157c03e RDI: 0000000000000005
RBP: ffff8880403a85c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ac05b R12: 0000000000000000
R13: ffff8880403a8658 R14: ffff88801d7e5800 R15: ffff8880403a85c8
__perf_remove_from_context+0x71e/0xb20
event_function+0x297/0x3d0
remote_function+0x125/0x1b0
__flush_smp_call_function_queue+0x1df/0x5a0
__sysvec_call_function_single+0x92/0x3a0
sysvec_call_function_single+0x89/0xc0
asm_sysvec_call_function_single+0x16/0x20
RIP: 0010:perf_trace_lock+0x34e/0x560
Code: 00 00 00 00 48 8b 45 d0 65 48 2b 04 25 28 00 00 00 0f 85 01 02 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 52 a0 37 03 <48> b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f
RSP: 0018:ffff8880403979c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffe8ffffd28680 RCX: 0000000000000005
RDX: 1ffffffff0a615e4 RSI: 1ffffffff0a2b715 RDI: ffffffff8530af20
RBP: ffff888040397a98 R08: 0000000000000000 R09: ffffffff85b02f57
R10: 000000000000000d R11: 0000000000000001 R12: 1ffff11008072f3e
R13: ffffffff85406fa0 R14: ffff888040397a70 R15: ffffffff8530aea0
lock_release+0x4ae/0x750
avc_has_perm_noaudit+0x1ea/0x3a0
avc_has_perm+0xb1/0x1b0
selinux_socket_create+0x20f/0x5c0
security_socket_create+0x62/0xc0
__sock_create+0x87/0x760
__sys_socket+0x133/0x250
__x64_sys_socket+0x6f/0xb0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f95981dab19
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:00007f9595750188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f95982edf60 RCX: 00007f95981dab19
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f9598234f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffded1abfaf R14: 00007f9595750300 R15: 0000000000022000
WARNING: CPU: 1 PID: 3708 at kernel/events/core.c:2047 perf_group_detach+0x99e/0x12f0
Modules linked in:
CPU: 1 PID: 3708 Comm: syz-executor.3 Not tainted 6.0.0-rc5-next-20220915 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:perf_group_detach+0x99e/0x12f0
Code: 85 d5 f8 ff ff e8 22 57 ee ff 65 44 8b 25 96 b5 aa 7e 31 ff 44 89 e6 e8 c0 53 ee ff 45 85 e4 0f 84 0a 05 00 00 e8 02 57 ee ff <0f> 0b e9 a9 f8 ff ff e8 f6 56 ee ff 65 8b 1d 6b b5 aa 7e 31 ff 89
RSP: 0018:ffff88806cf09e60 EFLAGS: 00010046
RAX: 0000000080010003 RBX: ffff8880403a85c8 RCX: 0000000000000000
RDX: ffff888017ef0000 RSI: ffffffff8157c03e RDI: 0000000000000005
RBP: ffff8880403a85c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ac05b R12: 0000000000000000
R13: ffff8880403a8658 R14: ffff88801d7e5800 R15: ffff8880403a85c8
FS: 00007f9595750700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fd1a231f0 CR3: 000000001f1d0000 CR4: 0000000000350ee0
Call Trace:
__perf_remove_from_context+0x71e/0xb20
event_function+0x297/0x3d0
remote_function+0x125/0x1b0
__flush_smp_call_function_queue+0x1df/0x5a0
__sysvec_call_function_single+0x92/0x3a0
sysvec_call_function_single+0x89/0xc0
asm_sysvec_call_function_single+0x16/0x20
RIP: 0010:perf_trace_lock+0x34e/0x560
Code: 00 00 00 00 48 8b 45 d0 65 48 2b 04 25 28 00 00 00 0f 85 01 02 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 52 a0 37 03 <48> b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f
RSP: 0018:ffff8880403979c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffe8ffffd28680 RCX: 0000000000000005
RDX: 1ffffffff0a615e4 RSI: 1ffffffff0a2b715 RDI: ffffffff8530af20
RBP: ffff888040397a98 R08: 0000000000000000 R09: ffffffff85b02f57
R10: 000000000000000d R11: 0000000000000001 R12: 1ffff11008072f3e
R13: ffffffff85406fa0 R14: ffff888040397a70 R15: ffffffff8530aea0
lock_release+0x4ae/0x750
avc_has_perm_noaudit+0x1ea/0x3a0
avc_has_perm+0xb1/0x1b0
selinux_socket_create+0x20f/0x5c0
security_socket_create+0x62/0xc0
__sock_create+0x87/0x760
__sys_socket+0x133/0x250
__x64_sys_socket+0x6f/0xb0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f95981dab19
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:00007f9595750188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f95982edf60 RCX: 00007f95981dab19
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: 00007f9598234f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffded1abfaf R14: 00007f9595750300 R15: 0000000000022000
irq event stamp: 1152
hardirqs last enabled at (1151): [] syscall_enter_from_user_mode+0x1d/0x50
hardirqs last disabled at (1152): [] sysvec_call_function_single+0xb/0xc0
softirqs last enabled at (984): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (723): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
capability: warning: `syz-executor.5' uses 32-bit capabilities (legacy support in use)
blktrace: Concurrent blktraces are not allowed on sg0
hrtimer: interrupt took 38052 ns
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
blktrace: Concurrent blktraces are not allowed on sg0
EXT4-fs: Cannot specify journal on remount
EXT4-fs: Cannot specify journal on remount
EXT4-fs: Cannot specify journal on remount
EXT4-fs: Cannot specify journal on remount
EXT4-fs: Cannot specify journal on remount
loop3: detected capacity change from 0 to 128
syz-executor.1 (4256) used greatest stack depth: 24728 bytes left
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 'syz-executor.4': attribute type 58 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
ieee80211 phy2: Selected rate control algorithm 'minstrel_ht'
netlink: 'syz-executor.4': attribute type 58 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
ieee80211 phy3: Selected rate control algorithm 'minstrel_ht'
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
ieee80211 phy4: Selected rate control algorithm 'minstrel_ht'
netlink: 'syz-executor.4': attribute type 58 has an invalid length.
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
netlink: 'syz-executor.4': attribute type 58 has an invalid length.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
ieee80211 phy5: Selected rate control algorithm 'minstrel_ht'
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.4'.
ieee80211 phy6: Selected rate control algorithm 'minstrel_ht'
netlink: 8 bytes leftover after parsing attributes in process `syz-executor.1'.
ieee80211 phy7: Selected rate control algorithm 'minstrel_ht'
sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive.
ieee80211 phy8: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy9: Selected rate control algorithm 'minstrel_ht'
audit: type=1400 audit(1663243822.685:9): avc: denied { write } for pid=4535 comm="syz-executor.2" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 48 8b 45 d0 mov -0x30(%rbp),%rax
8: 65 48 2b 04 25 28 00 sub %gs:0x28,%rax
f: 00 00
11: 0f 85 01 02 00 00 jne 0x218
17: 48 8d 65 d8 lea -0x28(%rbp),%rsp
1b: 5b pop %rbx
1c: 41 5c pop %r12
1e: 41 5d pop %r13
20: 41 5e pop %r14
22: 41 5f pop %r15
24: 5d pop %rbp
25: e9 52 a0 37 03 jmpq 0x337a07c
* 2a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
31: fc ff df
34: 48 89 da mov %rbx,%rdx
37: 48 c1 ea 03 shr $0x3,%rdx
3b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
3f: 0f .byte 0xf