random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
==================================================================
------------[ cut here ]------------
BUG: KASAN: slab-out-of-bounds in memset include/linux/string.h:330 [inline]
BUG: KASAN: slab-out-of-bounds in vmac_final+0x161/0x26a0 crypto/vmac.c:611
ODEBUG: deactivate not available (active state 0) object type: timer_list hint: process_timeout+0x0/0x40 kernel/time/timer.c:1423
Write of size 18446744073709551516 at addr ffff8801cef677cc by task syz-executor217/6484
WARNING: CPU: 0 PID: 6468 at lib/debugobjects.c:329 debug_print_object+0x16a/0x210 lib/debugobjects.c:326
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 6484 Comm: syz-executor217 Not tainted 4.17.0+ #98
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
print_address_description+0x6c/0x20b mm/kasan/report.c:256
kasan_report_error mm/kasan/report.c:354 [inline]
kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x13e/0x1b0 mm/kasan/kasan.c:267
memset+0x23/0x40 mm/kasan/kasan.c:285
memset include/linux/string.h:330 [inline]
vmac_final+0x161/0x26a0 crypto/vmac.c:611
crypto_shash_final+0x104/0x260 crypto/shash.c:152
shash_async_final+0x35/0x40 crypto/shash.c:252
crypto_ahash_op+0xcf/0x180 crypto/ahash.c:362
crypto_ahash_final+0x57/0x70 crypto/ahash.c:367
hash_sendmsg+0x750/0xac0 crypto/algif_hash.c:126
sock_sendmsg_nosec net/socket.c:645 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:655
___sys_sendmsg+0x805/0x940 net/socket.c:2161
__sys_sendmsg+0x115/0x270 net/socket.c:2199
__do_sys_sendmsg net/socket.c:2208 [inline]
__se_sys_sendmsg net/socket.c:2206 [inline]
__x64_sys_sendmsg+0x78/0xb0 net/socket.c:2206
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x446af9
Code: e8 4c e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 4b 56 00 00 c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4c7cca3ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dcc5c RCX: 0000000000446af9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000008
RBP: 00000000006dcc58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff3230487f R14: 00007f4c7cca49c0 R15: 000000000000000b
CPU: 0 PID: 6468 Comm: syz-executor217 Not tainted 4.17.0+ #98
Allocated by task 6468:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
save_stack+0x43/0xd0 mm/kasan/kasan.c:448
Call Trace:
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
<IRQ>
__do_kmalloc mm/slab.c:3718 [inline]
__kmalloc+0x14e/0x760 mm/slab.c:3727
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
kmalloc include/linux/slab.h:518 [inline]
kzalloc include/linux/slab.h:706 [inline]
crypto_create_tfm+0x87/0x310 crypto/api.c:464
crypto_init_shash_ops_async+0x5d/0x3e4 crypto/shash.c:357
crypto_ahash_init_tfm+0x357/0x430 crypto/ahash.c:458
panic+0x22f/0x4de kernel/panic.c:184
crypto_create_tfm+0xe9/0x310 crypto/api.c:471
crypto_alloc_tfm+0x1b5/0x2d0 crypto/api.c:543
crypto_alloc_ahash+0x2c/0x40 crypto/ahash.c:539
hash_bind+0x25/0x30 crypto/algif_hash.c:408
alg_bind+0x2be/0x560 crypto/af_alg.c:183
__sys_bind+0x331/0x440 net/socket.c:1528
__warn.cold.8+0x163/0x1b3 kernel/panic.c:536
__do_sys_bind net/socket.c:1539 [inline]
__se_sys_bind net/socket.c:1537 [inline]
__x64_sys_bind+0x73/0xb0 net/socket.c:1537
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
report_bug+0x252/0x2d0 lib/bug.c:186
entry_SYSCALL_64_after_hwframe+0x49/0xbe
fixup_bug arch/x86/kernel/traps.c:178 [inline]
do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
Freed by task 3238:
(stack is not available)
The buggy address belongs to the object at ffff8801cef675c0
which belongs to the cache kmalloc-512 of size 512
The buggy address is located 12 bytes to the right of
512-byte region [ffff8801cef675c0, ffff8801cef677c0)
The buggy address belongs to the page:
page:ffffea00073bd9c0 count:1 mapcount:0 mapping:ffff8801da800940 index:0x0
do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:992
flags: 0x2fffc0000000100(slab)
RIP: 0010:debug_print_object+0x16a/0x210 lib/debugobjects.c:326
raw: 02fffc0000000100 ffffea00073bd848 ffffea00073a4748 ffff8801da800940
Code:
raw: 0000000000000000 ffff8801cef670c0 0000000100000006 0000000000000000
1a
page dumped because: kasan: bad access detected
88
48
Memory state around the buggy address:
89
ffff8801cef67680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
fa
ffff8801cef67700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
48
>ffff8801cef67780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
c1
^
ea 03
ffff8801cef67800: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
80
ffff8801cef67880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
3c
==================================================================
02 00 0f 85 92 00 00 00 48 8b 14 dd 20 7a 1a 88 4c 89 f6 48 c7 c7 a0 6f 1a 88 e8 a6 4d ec fd <0f> 0b 83 05 19 4c 44 06 01 48 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f
kasan: CONFIG_KASAN_INLINE enabled
RSP: 0018:ffff8801dae07850 EFLAGS: 00010086
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
RAX: 0000000000000068 RBX: 0000000000000005 RCX: ffffffff81854ed8
CPU: 1 PID: 0 Comm: Tainted: G B 4.17.0+ #98
RDX: 0000000000000100 RSI: ffffffff8161f371 RDI: 0000000000000001
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RBP: ffff8801dae07890 R08: ffff8801d2e38280 R09: ffffed003b5c3ec2
R10: ffffed003b5c3ec2 R11: ffff8801dae1f617 R12: 0000000000000001
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:get_running_cputimer include/linux/sched/cputime.h:85 [inline]
RIP: 0010:account_group_system_time include/linux/sched/cputime.h:149 [inline]
RIP: 0010:account_system_index_time+0xea/0x5b0 kernel/sched/cputime.c:168
R13: ffffffff88f9a940 R14: ffffffff881a7380 R15: ffffffff81677180
Code:
63
04
00
debug_object_deactivate+0x2a7/0x400 lib/debugobjects.c:563
00
48 8b
83
b8
debug_timer_deactivate kernel/time/timer.c:714 [inline]
debug_deactivate kernel/time/timer.c:770 [inline]
detach_timer kernel/time/timer.c:815 [inline]
expire_timers kernel/time/timer.c:1353 [inline]
__run_timers+0x569/0xc50 kernel/time/timer.c:1666
06
00
00
48
ba
00
00
00 00
00
fc
ff
run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692
df
__do_softirq+0x2e0/0xaf5 kernel/softirq.c:284
48
8d b8
38
01
00 00
48
8d
88 20
01 00
00
invoke_softirq kernel/softirq.c:364 [inline]
irq_exit+0x1d1/0x200 kernel/softirq.c:404
48 89
exiting_irq arch/x86/include/asm/apic.h:527 [inline]
smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052
fe
48
c1
ee
03 <0f>
b6 14
16
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
48
</IRQ>
89
RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65
fe
Code:
83
c1
e6
e9
07 40
03 40
38
0f
f2
b6
7f 08
f6
84 d2
48
0f
b8
85
01
f6
01
03
01 01
00
01
RSP: 0018:ffff8801daf07980 EFLAGS: 00010006
01 01
01
RAX: 0000000000000000 RBX: ffff8801d0bce680 RCX: 0000000000000120
48
RDX: dffffc0000000000 RSI: 0000000000000027 RDI: 0000000000000138
0f
RBP: ffff8801daf07a68 R08: ffff8801d0bce680 R09: 0000000000000000
af c6
R10: ffffed0043fff009 R11: ffff88021fff8057 R12: ffff8801daf07a40
f3 48
R13: ffff8801d0bce680 R14: 00000000000f4240 R15: 0000000000000002
ab
FS: 00007f4c7cca4700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
89
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
d1 f3
CR2: 0000000020000080 CR3: 00000001adf27000 CR4: 00000000001406e0
aa
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
4c 89 c8
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
c3 90
<IRQ>
49
89
f9
40
88 f0
48
89 d1
account_system_time+0x7f/0xb0 kernel/sched/cputime.c:199
<f3>
account_process_tick+0x76/0x240 kernel/sched/cputime.c:498
aa
4c 89
update_process_times+0x21/0x70 kernel/time/timer.c:1634
c8
tick_sched_handle+0x9f/0x180 kernel/time/tick-sched.c:164
c3 90
tick_sched_timer+0x45/0x130 kernel/time/tick-sched.c:1274
49
__run_hrtimer kernel/time/hrtimer.c:1398 [inline]
__hrtimer_run_queues+0x3e3/0x10a0 kernel/time/hrtimer.c:1460
89
fa 40
0f
b6
ce
48 b8
01
01 01
01 01
01
RSP: 0018:ffff8801d24d77f0 EFLAGS: 00010282
ORIG_RAX: ffffffffffffff13
hrtimer_interrupt+0x2f3/0x750 kernel/time/hrtimer.c:1518
RAX: 0000000000000000 RBX: ffff8801cef677cc RCX: ffffffffffc16593
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1025 [inline]
smp_apic_timer_interrupt+0x15d/0x710 arch/x86/kernel/apic/apic.c:1050
RDX: ffffffffffffff9c RSI: 0000000000000000 RDI: ffff8801cf3511d5
RBP: ffff8801d24d7810 R08: ffffed0039deceed R09: ffff8801cef677cc
R10: ffffed0039deceec R11: ffff8801cef67767 R12: ffffffffffffff9c
R13: 0000000000000000 R14: ffff8801cef675c0 R15: ffff8801cef676e8
memset include/linux/string.h:330 [inline]
vmac_final+0x161/0x26a0 crypto/vmac.c:611
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
</IRQ>
Modules linked in:
crypto_shash_final+0x104/0x260 crypto/shash.c:152
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace 6543079521a07167 ]---
shash_async_final+0x35/0x40 crypto/shash.c:252
RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline]
RIP: 0010:get_running_cputimer include/linux/sched/cputime.h:85 [inline]
RIP: 0010:account_group_system_time include/linux/sched/cputime.h:149 [inline]
RIP: 0010:account_system_index_time+0xea/0x5b0 kernel/sched/cputime.c:168
crypto_ahash_op+0xcf/0x180 crypto/ahash.c:362
Code:
crypto_ahash_final+0x57/0x70 crypto/ahash.c:367
63
hash_sendmsg+0x750/0xac0 crypto/algif_hash.c:126
04
hash_sendmsg_nokey+0x61/0x80 crypto/algif_hash.c:346
00
00
sock_sendmsg_nosec net/socket.c:645 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:655
48
__sys_sendto+0x3d7/0x670 net/socket.c:1833
8b
83 b8
06
00 00
48
ba
00
00 00
00
00
fc
__do_sys_sendto net/socket.c:1845 [inline]
__se_sys_sendto net/socket.c:1841 [inline]
__x64_sys_sendto+0xe1/0x1a0 net/socket.c:1841
ff
df
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
48
8d
b8
38
01
00
entry_SYSCALL_64_after_hwframe+0x49/0xbe
00
RIP: 0033:0x446af9
48 8d
Code:
88 20
e8
01
4c
00
e7 ff
00
ff
48
48
89
83
fe
c4 18
48
c3 0f
c1
1f
ee
80
03 <0f>
00
b6
00
14
00
16
00
48
48
89 fe
89 f8
83
48
e6
89
07
f7
40
48 89
38
d6
f2
48 89
7f 08
ca
84
4d
d2
89 c2
0f 85
4d
f6
89
03 00
c8
4c 8b
RSP: 0018:ffff8801daf07980 EFLAGS: 00010006
4c 24
08
RAX: 0000000000000000 RBX: ffff8801d0bce680 RCX: 0000000000000120
0f 05
RDX: dffffc0000000000 RSI: 0000000000000027 RDI: 0000000000000138
RBP: ffff8801daf07a68 R08: ffff8801d0bce680 R09: 0000000000000000
<48>
R10: ffffed0043fff009 R11: ffff88021fff8057 R12: ffff8801daf07a40
3d
R13: ffff8801d0bce680 R14: 00000000000f4240 R15: 0000000000000002
01 f0
FS: 00007f4c7cca4700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
ff ff
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
0f 83
CR2: 0000000020000080 CR3: 00000001adf27000 CR4: 00000000001406e0
4b
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
56
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
00 00 c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f4c7ccc4cd8 EFLAGS: 00000216 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000006dcc44 RCX: 0000000000446af9
RDX: 00000000000000f9 RSI: 0000000020000380 RDI: 0000000000000007
RBP: 00000000006dcc40 R08: 0000000020000480 R09: 0000000000000010
R10: 0000000000000804 R11: 0000000000000216 R12: 0000000000000000
R13: 00007fff3230487f R14: 00007f4c7ccc59c0 R15: 000000000000000b
======================================================
WARNING: possible circular locking dependency detected
4.17.0+ #98 Not tainted
------------------------------------------------------
syz-executor217/6468 is trying to acquire lock:
(____ptrval____) ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 kernel/locking/semaphore.c:136
but task is already holding lock:
(____ptrval____) (&obj_hash[i].lock){-.-.}, at: debug_object_deactivate+0xe1/0x400 lib/debugobjects.c:538
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&obj_hash[i].lock){-.-.}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
__debug_object_init+0x11f/0x12c0 lib/debugobjects.c:381
debug_object_init+0x16/0x20 lib/debugobjects.c:429
debug_hrtimer_init kernel/time/hrtimer.c:410 [inline]
debug_init kernel/time/hrtimer.c:458 [inline]
hrtimer_init+0x8f/0x460 kernel/time/hrtimer.c:1308
init_dl_task_timer+0x1b/0x50 kernel/sched/deadline.c:1056
__sched_fork+0x2a8/0x570 kernel/sched/core.c:2184
init_idle+0x75/0x7a0 kernel/sched/core.c:5404
sched_init+0xbeb/0xd10 kernel/sched/core.c:6102
start_kernel+0x475/0x92d init/main.c:602
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:452
x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:433
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242
-> #2 (&rq->lock){-.-.}:
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
rq_lock kernel/sched/sched.h:1805 [inline]
task_fork_fair+0x8a/0x660 kernel/sched/fair.c:9953
sched_fork+0x43e/0xb30 kernel/sched/core.c:2380
copy_process.part.38+0x1bf1/0x7180 kernel/fork.c:1765
copy_process kernel/fork.c:1608 [inline]
_do_fork+0x291/0x12a0 kernel/fork.c:2091
kernel_thread+0x34/0x40 kernel/fork.c:2150
rest_init+0x22/0xe4 init/main.c:408
start_kernel+0x906/0x92d init/main.c:738
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:452
x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:433
secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242
-> #1 (&p->pi_lock){-.-.}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
try_to_wake_up+0xca/0x1280 kernel/sched/core.c:1984
wake_up_process+0x10/0x20 kernel/sched/core.c:2147
__up.isra.1+0x1b8/0x290 kernel/locking/semaphore.c:262
up+0x12f/0x1b0 kernel/locking/semaphore.c:187
__up_console_sem+0xbe/0x1b0 kernel/printk/printk.c:242
console_unlock+0x79a/0x10a0 kernel/printk/printk.c:2411
vprintk_emit+0x6b2/0xde0 kernel/printk/printk.c:1907
vprintk_default+0x28/0x30 kernel/printk/printk.c:1948
vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382
printk+0x9e/0xba kernel/printk/printk.c:1981
load_umh+0x51/0xbd net/bpfilter/bpfilter_kern.c:99
do_one_initcall+0x127/0x913 init/main.c:884
do_initcall_level init/main.c:952 [inline]
do_initcalls init/main.c:960 [inline]
do_basic_setup init/main.c:978 [inline]
kernel_init_freeable+0x49b/0x58e init/main.c:1135
kernel_init+0x11/0x1b3 init/main.c:1061
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
-> #0 ((console_sem).lock){-.-.}:
lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3924
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
down_trylock+0x13/0x70 kernel/locking/semaphore.c:136
__down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:225
console_trylock+0x15/0xa0 kernel/printk/printk.c:2230
console_trylock_spinning kernel/printk/printk.c:1643 [inline]
vprintk_emit+0x699/0xde0 kernel/printk/printk.c:1906
vprintk_default+0x28/0x30 kernel/printk/printk.c:1948
vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382
printk+0x9e/0xba kernel/printk/printk.c:1981
__warn_printk+0x83/0xd0 kernel/panic.c:590
debug_print_object+0x16a/0x210 lib/debugobjects.c:326
debug_object_deactivate+0x2a7/0x400 lib/debugobjects.c:563
debug_timer_deactivate kernel/time/timer.c:714 [inline]
debug_deactivate kernel/time/timer.c:770 [inline]
detach_timer kernel/time/timer.c:815 [inline]
expire_timers kernel/time/timer.c:1353 [inline]
__run_timers+0x569/0xc50 kernel/time/timer.c:1666
run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692
__do_softirq+0x2e0/0xaf5 kernel/softirq.c:284
invoke_softirq kernel/softirq.c:364 [inline]
irq_exit+0x1d1/0x200 kernel/softirq.c:404
exiting_irq arch/x86/include/asm/apic.h:527 [inline]
smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65
memset include/linux/string.h:330 [inline]
vmac_final+0x161/0x26a0 crypto/vmac.c:611
crypto_shash_final+0x104/0x260 crypto/shash.c:152
shash_async_final+0x35/0x40 crypto/shash.c:252
crypto_ahash_op+0xcf/0x180 crypto/ahash.c:362
crypto_ahash_final+0x57/0x70 crypto/ahash.c:367
hash_sendmsg+0x750/0xac0 crypto/algif_hash.c:126
hash_sendmsg_nokey+0x61/0x80 crypto/algif_hash.c:346
sock_sendmsg_nosec net/socket.c:645 [inline]
sock_sendmsg+0xd5/0x120 net/socket.c:655
__sys_sendto+0x3d7/0x670 net/socket.c:1833
__do_sys_sendto net/socket.c:1845 [inline]
__se_sys_sendto net/socket.c:1841 [inline]
__x64_sys_sendto+0xe1/0x1a0 net/socket.c:1841
do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
other info that might help us debug this:
Chain exists of:
(console_sem).lock --> &rq->lock --> &obj_hash[i].lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&obj_hash[i].lock);
lock(&rq->lock);
lock(&obj_hash[i].lock);
lock((console_sem).lock);
*** DEADLOCK ***
3 locks held by syz-executor217/6468:
#0: (____ptrval____) (sk_lock-AF_ALG){+.+.}, at: lock_sock include/net/sock.h:1474 [inline]
#0: (____ptrval____) (sk_lock-AF_ALG){+.+.}, at: hash_sendmsg+0xd9/0xac0 crypto/algif_hash.c:81
#1: (____ptrval____) (&base->lock){-.-.}, at: __run_timers+0x16e/0xc50 kernel/time/timer.c:1658
#2: (____ptrval____) (&obj_hash[i].lock){-.-.}, at: debug_object_deactivate+0xe1/0x400 lib/debugobjects.c:538
stack backtrace:
CPU: 0 PID: 6468 Comm: syz-executor217 Not tainted 4.17.0+ #98
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1b9/0x294 lib/dump_stack.c:113
print_circular_bug.isra.36.cold.56+0x1bd/0x27d kernel/locking/lockdep.c:1227
check_prev_add kernel/locking/lockdep.c:1867 [inline]
check_prevs_add kernel/locking/lockdep.c:1980 [inline]
validate_chain kernel/locking/lockdep.c:2421 [inline]
__lock_acquire+0x343e/0x5140 kernel/locking/lockdep.c:3435
lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3924
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
down_trylock+0x13/0x70 kernel/locking/semaphore.c:136
__down_trylock_console_sem+0xae/0x200 kernel/printk/printk.c:225
console_trylock+0x15/0xa0 kernel/printk/printk.c:2230
console_trylock_spinning kernel/printk/printk.c:1643 [inline]
vprintk_emit+0x699/0xde0 kernel/printk/printk.c:1906
vprintk_default+0x28/0x30 kernel/printk/printk.c:1948
vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382
printk+0x9e/0xba kernel/printk/printk.c:1981
__warn_printk+0x83/0xd0 kernel/panic.c:590
debug_print_object+0x16a/0x210 lib/debugobjects.c:326
debug_object_deactivate+0x2a7/0x400 lib/debugobjects.c:563
debug_timer_deactivate kernel/time/timer.c:714 [inline]
debug_deactivate kernel/time/timer.c:770 [inline]
detach_timer kernel/time/timer.c:815 [inline]
expire_timers kernel/time/timer.c:1353 [inline]
__run_timers+0x569/0xc50 kernel/time/timer.c:1666
run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692
__do_softirq+0x2e0/0xaf5 kernel/softirq.c:284
invoke_softirq kernel/softirq.c:364 [inline]
irq_exit+0x1d1/0x200 kernel/softirq.c:404
exiting_irq arch/x86/include/asm/apic.h:527 [inline]
smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
</IRQ>
RIP: 0010:memset_erms+0x9/0x10 arch/x86/lib/memset_64.S:65
Code: c1 e9 03 40 0f b6 f6 48 b8 01 01 01 01 01 01 01 01 48 0f af c6 f3 48 ab 89 d1 f3 aa 4c 89 c8 c3 90 49 89 f9 40 88 f0 48 89 d1 <f3> aa 4c 89 c8 c3 90 49 89 fa 40 0f b6 ce 48 b8 01 01 01 01 01 01
RSP: 0018:ffff8801d24d77f0 EFLAGS: 00010282 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff8801cef677cc RCX: ffffffffffc16593
RDX: ffffffffffffff9c RSI: 0000000000000000 RDI: ffff8801cf3511d5
RBP: ffff8801d24d7810 R08: ffffed0039deceed R09: ffff8801cef677cc
R10: ffffed0039deceec R11: ffff8801cef67767 R12: ffffffffffffff9c
R13: 0000000000000000 R14: ffff8801cef675c0 R15: ffff8801cef676e8
memset include/linux/string.h:330 [inline]
vmac_final+0x161/0x26a0 crypto/vmac.c:611
crypto_shash_final+0x104/0x260 crypto/shash.c:152
shash_async_final+0x35/0x40 crypto/shash.c:252
crypto_ahash_op+0xcf/0x180 crypto/ahash.c:362
crypto_ahash_final+0x57/0x70 crypto/ahash.c:367
hash_sendmsg+0x750/0xac0 crypto/algif_hash.c:126
hash_sendmsg_nokey+0x61/0x80 crypto/algif_hash.c:346
Lost 95 message(s)!
Shutting down cpus with NMI
Dumping ftrace buffer:
(ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..