audit: type=1400 audit(1665007983.632:8): avc: denied { kernel } for pid=3796 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-next-20221005 #1 Not tainted
------------------------------------------------------
syz-executor.3/3798 is trying to acquire lock:
ffffffff853faaf8 ((console_sem).lock){....}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88800e0cf820 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0
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
con_install+0x14e/0x5d0
tty_init_dev.part.0+0xa0/0x5e0
tty_open+0xba3/0x1350
chrdev_open+0x268/0x6e0
do_dentry_open+0x6ca/0x12b0
path_openat+0x187f/0x27b0
do_filp_open+0x1b6/0x410
do_sys_openat2+0x171/0x4c0
__x64_sys_openat+0x13f/0x1f0
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
event_filter_match+0x422/0x660
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
prepare_alloc_pages+0x33f/0x500
__alloc_pages+0x145/0x500
vma_alloc_folio+0xde/0x470
wp_page_copy+0xebe/0x2400
do_wp_page+0x199/0x2050
__handle_mm_fault+0x11eb/0x35e0
handle_mm_fault+0x2e6/0xa20
do_user_addr_fault+0x536/0x1300
exc_page_fault+0x98/0x1a0
asm_exc_page_fault+0x22/0x30
__put_user_nocheck_4+0x3/0x11
__sys_sendmmsg+0x1c5/0x460
__x64_sys_sendmmsg+0x99/0x100
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.3/3798:
#0: ffff88801a250f58 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x337/0x1300
#1: ffff88806ce3d2e0 (&cpuctx_lock){....}-{2:2}, at: __perf_event_task_sched_in+0x28f/0x6e0
#2: ffff88800e0cf820 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0
stack backtrace:
CPU: 0 PID: 3798 Comm: syz-executor.3 Not tainted 6.0.0-next-20221005 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 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:event_filter_match+0x422/0x660
Code: 00 00 00 e9 7c fc ff ff e8 7b 33 f1 ff 65 8b 2d 20 8d ad 7e 31 ff 89 ee e8 1b 30 f1 ff 85 ed 0f 84 ef 00 00 00 e8 5e 33 f1 ff <0f> 0b eb 9f e8 25 9f 23 00 e9 17 fc ff ff e8 4b 33 f1 ff 48 8d 7b
RSP: 0018:ffff888040c371f8 EFLAGS: 00010006
RAX: 0000000040000002 RBX: ffff8880404f8000 RCX: 0000000000000000
RDX: ffff88803f065040 RSI: ffffffff8154e8b2 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b601b R12: ffff8880404f8220
R13: 0000000000000000 R14: ffff8880404f80a8 R15: ffff8880404f8220
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
prepare_alloc_pages+0x33f/0x500
__alloc_pages+0x145/0x500
vma_alloc_folio+0xde/0x470
wp_page_copy+0xebe/0x2400
do_wp_page+0x199/0x2050
__handle_mm_fault+0x11eb/0x35e0
handle_mm_fault+0x2e6/0xa20
do_user_addr_fault+0x536/0x1300
exc_page_fault+0x98/0x1a0
asm_exc_page_fault+0x22/0x30
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca e9 11 27 4b 00 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca e9 f2 26 4b 00 66 90 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffff888040c37ce8 EFLAGS: 00050293
RAX: 0000000000000000 RBX: 00007fffffffeffd RCX: 0000000020004038
RDX: 0000000000040000 RSI: ffffffff83340858 RDI: 0000000000000000
RBP: 000000000004ec00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 000000000000005e
R13: 0000000020004000 R14: 0000000000000400 R15: 00000000000003ff
__sys_sendmmsg+0x1c5/0x460
__x64_sys_sendmmsg+0x99/0x100
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa8ea91ab19
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:00007fa8e7e90188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa8eaa2df60 RCX: 00007fa8ea91ab19
RDX: 0000000004000101 RSI: 0000000020002880 RDI: 0000000000000005
RBP: 00007fa8ea974f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ec00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffbda96dff R14: 00007fa8e7e90300 R15: 0000000000022000
WARNING: CPU: 0 PID: 3798 at kernel/events/core.c:2233 event_filter_match+0x422/0x660
Modules linked in:
CPU: 0 PID: 3798 Comm: syz-executor.3 Not tainted 6.0.0-next-20221005 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:event_filter_match+0x422/0x660
Code: 00 00 00 e9 7c fc ff ff e8 7b 33 f1 ff 65 8b 2d 20 8d ad 7e 31 ff 89 ee e8 1b 30 f1 ff 85 ed 0f 84 ef 00 00 00 e8 5e 33 f1 ff <0f> 0b eb 9f e8 25 9f 23 00 e9 17 fc ff ff e8 4b 33 f1 ff 48 8d 7b
RSP: 0018:ffff888040c371f8 EFLAGS: 00010006
RAX: 0000000040000002 RBX: ffff8880404f8000 RCX: 0000000000000000
RDX: ffff88803f065040 RSI: ffffffff8154e8b2 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b601b R12: ffff8880404f8220
R13: 0000000000000000 R14: ffff8880404f80a8 R15: ffff8880404f8220
FS: 00007fa8e7e90700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc5d2d621f0 CR3: 0000000017dd6000 CR4: 0000000000350ef0
Call Trace:
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
prepare_alloc_pages+0x33f/0x500
__alloc_pages+0x145/0x500
vma_alloc_folio+0xde/0x470
wp_page_copy+0xebe/0x2400
do_wp_page+0x199/0x2050
__handle_mm_fault+0x11eb/0x35e0
handle_mm_fault+0x2e6/0xa20
do_user_addr_fault+0x536/0x1300
exc_page_fault+0x98/0x1a0
asm_exc_page_fault+0x22/0x30
RIP: 0010:__put_user_nocheck_4+0x3/0x11
Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca e9 11 27 4b 00 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca e9 f2 26 4b 00 66 90 48 bb f9 ef ff ff ff 7f
RSP: 0018:ffff888040c37ce8 EFLAGS: 00050293
RAX: 0000000000000000 RBX: 00007fffffffeffd RCX: 0000000020004038
RDX: 0000000000040000 RSI: ffffffff83340858 RDI: 0000000000000000
RBP: 000000000004ec00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 000000000000005e
R13: 0000000020004000 R14: 0000000000000400 R15: 00000000000003ff
__sys_sendmmsg+0x1c5/0x460
__x64_sys_sendmmsg+0x99/0x100
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fa8ea91ab19
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:00007fa8e7e90188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fa8eaa2df60 RCX: 00007fa8ea91ab19
RDX: 0000000004000101 RSI: 0000000020002880 RDI: 0000000000000005
RBP: 00007fa8ea974f6d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ec00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffbda96dff R14: 00007fa8e7e90300 R15: 0000000000022000
irq event stamp: 1800
hardirqs last enabled at (1799): [] handle_mm_fault+0x6fd/0xa20
hardirqs last disabled at (1800): [] __schedule+0x1225/0x2470
softirqs last enabled at (1792): [] udp_sendmsg+0x8e9/0x20f0
softirqs last disabled at (1790): [] release_sock+0x1b/0x1b0
---[ end trace 0000000000000000 ]---
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] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current]
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 20 prio class 2
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 1 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 2 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 2, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 3 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 3, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 4 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 4, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 5 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 5, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 6 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 6, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 7 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 7, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev sr0, logical block 0, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Buffer I/O error on dev sr0, logical block 1, async page read
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hrtimer: interrupt took 19006 ns
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s
sr 1:0:0:0: [sr0] tag#0 Sense Key : Not Ready [current]
sr 1:0:0:0: [sr0] tag#0 Add. Sense: Medium not present
sr 1:0:0:0: [sr0] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 40 00
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Process accounting resumed
Process accounting resumed
loop5: detected capacity change from 0 to 264192
ext2: Unknown parameter 'obj_user'
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 48 39 d9 cmp %rbx,%rcx
5: 73 54 jae 0x5b
7: 0f 01 cb stac
a: 66 89 01 mov %ax,(%rcx)
d: 31 c9 xor %ecx,%ecx
f: 0f 01 ca clac
12: e9 11 27 4b 00 jmpq 0x4b2728
17: 90 nop
18: 48 bb fd ef ff ff ff movabs $0x7fffffffeffd,%rbx
1f: 7f 00 00
22: 48 39 d9 cmp %rbx,%rcx
25: 73 34 jae 0x5b
27: 0f 01 cb stac
* 2a: 89 01 mov %eax,(%rcx) <-- trapping instruction
2c: 31 c9 xor %ecx,%ecx
2e: 0f 01 ca clac
31: e9 f2 26 4b 00 jmpq 0x4b2728
36: 66 90 xchg %ax,%ax
38: 48 rex.W
39: bb f9 ef ff ff mov $0xffffeff9,%ebx
3e: ff (bad)
3f: 7f .byte 0x7f