audit: type=1400 audit(1663246616.267:8): avc: denied { kernel } for pid=6474 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-20220915 #1 Not tainted
------------------------------------------------------
syz-executor.1/6475 is trying to acquire lock:
ffffffff853fa878 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff888040d21820 (&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
vprintk_emit+0x1bd/0x560
vprintk+0x84/0xa0
_printk+0xba/0xf1
kauditd_hold_skb.cold+0x3f/0x4e
kauditd_send_queue+0x233/0x290
kauditd_thread+0x5da/0x9a0
kthread+0x2ed/0x3a0
ret_from_fork+0x22/0x30
-> #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
cap_task_prctl+0x2/0xd80
security_task_prctl+0x7a/0x100
__do_sys_prctl+0x96/0x1120
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.1/6475:
#0: ffff88806cf3d120 (&cpuctx_lock){-...}-{2:2}, at: event_function+0x16f/0x3d0
#1: ffff888040d21820 (&ctx->lock){-...}-{2:2}, at: event_function+0x182/0x3d0
stack backtrace:
CPU: 1 PID: 6475 Comm: syz-executor.1 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: 0000000080010002 RBX: ffff88803e9805c8 RCX: 0000000000000000
RDX: ffff88801d221ac0 RSI: ffffffff8157c03e RDI: 0000000000000005
RBP: ffff88803e9805c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ac05b R12: 0000000000000000
R13: ffff88803e980658 R14: ffff888040d21800 R15: ffff88803e9805c8
__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:cap_task_prctl+0x2/0xd80
Code: 89 44 24 2c e8 2f 9f 94 ff 8b 44 24 2c e9 15 f6 ff ff e8 21 9f 94 ff e9 82 f6 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 <41> 56 4d 89 c6 41 55 49 89 d5 41 54 49 89 f4 55 48 89 cd 53 89 fb
RSP: 0018:ffff88803a96fe40 EFLAGS: 00000246
RAX: ffffffff81e3eb60 RBX: ffffffff855d4668 RCX: 0000000000000000
RDX: 0000000020ffd000 RSI: 0000000000000003 RDI: 0000000000000023
RBP: dffffc0000000000 R08: 0000000000000000 R09: 1ffff1100752dff9
R10: fffffbfff0b605ea R11: 0000000000000001 R12: 0000000000000000
R13: 0000000020ffd000 R14: 0000000000000000 R15: 0000000000000000
security_task_prctl+0x7a/0x100
__do_sys_prctl+0x96/0x1120
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd27ddafb19
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:00007fd27b325188 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007fd27dec2f60 RCX: 00007fd27ddafb19
RDX: 0000000020ffd000 RSI: 0000000000000003 RDI: 0000000000000023
RBP: 00007fd27de09f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde9f53dcf R14: 00007fd27b325300 R15: 0000000000022000
WARNING: CPU: 1 PID: 6475 at kernel/events/core.c:2047 perf_group_detach+0x99e/0x12f0
Modules linked in:
CPU: 1 PID: 6475 Comm: syz-executor.1 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: 0000000080010002 RBX: ffff88803e9805c8 RCX: 0000000000000000
RDX: ffff88801d221ac0 RSI: ffffffff8157c03e RDI: 0000000000000005
RBP: ffff88803e9805c8 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865ac05b R12: 0000000000000000
R13: ffff88803e980658 R14: ffff888040d21800 R15: ffff88803e9805c8
FS: 00007fd27b325700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f910a439b90 CR3: 000000001636a000 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:cap_task_prctl+0x2/0xd80
Code: 89 44 24 2c e8 2f 9f 94 ff 8b 44 24 2c e9 15 f6 ff ff e8 21 9f 94 ff e9 82 f6 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 <41> 56 4d 89 c6 41 55 49 89 d5 41 54 49 89 f4 55 48 89 cd 53 89 fb
RSP: 0018:ffff88803a96fe40 EFLAGS: 00000246
RAX: ffffffff81e3eb60 RBX: ffffffff855d4668 RCX: 0000000000000000
RDX: 0000000020ffd000 RSI: 0000000000000003 RDI: 0000000000000023
RBP: dffffc0000000000 R08: 0000000000000000 R09: 1ffff1100752dff9
R10: fffffbfff0b605ea R11: 0000000000000001 R12: 0000000000000000
R13: 0000000020ffd000 R14: 0000000000000000 R15: 0000000000000000
security_task_prctl+0x7a/0x100
__do_sys_prctl+0x96/0x1120
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd27ddafb19
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:00007fd27b325188 EFLAGS: 00000246 ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007fd27dec2f60 RCX: 00007fd27ddafb19
RDX: 0000000020ffd000 RSI: 0000000000000003 RDI: 0000000000000023
RBP: 00007fd27de09f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde9f53dcf R14: 00007fd27b325300 R15: 0000000000022000
irq event stamp: 1080
hardirqs last enabled at (1079): [] syscall_enter_from_user_mode+0x1d/0x50
hardirqs last disabled at (1080): [] sysvec_call_function_single+0xb/0xc0
softirqs last enabled at (924): [] __irq_exit_rcu+0x11b/0x180
softirqs last disabled at (919): [] __irq_exit_rcu+0x11b/0x180
---[ end trace 0000000000000000 ]---
hrtimer: interrupt took 32671 ns
syz-executor.5 (6701) used greatest stack depth: 24536 bytes left
ieee80211 phy2: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy3: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy4: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy5: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy6: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy7: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy8: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy9: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy10: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy11: Selected rate control algorithm 'minstrel_ht'
ieee80211 phy12: Selected rate control algorithm 'minstrel_ht'
loop7: detected capacity change from 0 to 256
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 21 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
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
Process accounting resumed
Process accounting resumed
loop7: detected capacity change from 0 to 256
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
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 30 prio class 2
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
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
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
Process accounting resumed
loop7: detected capacity change from 0 to 256
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 02 00
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
Process accounting resumed
Process accounting resumed
Process accounting resumed
loop7: detected capacity change from 0 to 256
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
Process accounting resumed
Process accounting resumed
Process accounting resumed
Process accounting resumed
Process accounting resumed
Process accounting resumed
Process accounting resumed
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
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
loop7: detected capacity change from 0 to 40
FAT-fs (loop7): Directory bread(block 24) failed
FAT-fs (loop7): Directory bread(block 25) failed
FAT-fs (loop7): Directory bread(block 26) failed
FAT-fs (loop7): Directory bread(block 27) failed
FAT-fs (loop7): Directory bread(block 28) failed
FAT-fs (loop7): Directory bread(block 29) failed
FAT-fs (loop7): Directory bread(block 30) failed
FAT-fs (loop7): Directory bread(block 31) failed
FAT-fs (loop7): Directory bread(block 32) failed
FAT-fs (loop7): Directory bread(block 33) failed
Zero length message leads to an empty skb
----------------
Code disassembly (best guess):
0: 89 44 24 2c mov %eax,0x2c(%rsp)
4: e8 2f 9f 94 ff callq 0xff949f38
9: 8b 44 24 2c mov 0x2c(%rsp),%eax
d: e9 15 f6 ff ff jmpq 0xfffff627
12: e8 21 9f 94 ff callq 0xff949f38
17: e9 82 f6 ff ff jmpq 0xfffff69e
1c: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
23: 00 00 00 00
27: 90 nop
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 4d 89 c6 mov %r8,%r14
2f: 41 55 push %r13
31: 49 89 d5 mov %rdx,%r13
34: 41 54 push %r12
36: 49 89 f4 mov %rsi,%r12
39: 55 push %rbp
3a: 48 89 cd mov %rcx,%rbp
3d: 53 push %rbx
3e: 89 fb mov %edi,%ebx