[v5.15] WARNING in dev_watchdog

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: abddfcf701a5 Linux 5.15.99
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=164a6f5cc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=e8038112e99511e7
dashboard link: https://syzkaller.appspot.com/bug?extid=2c8f0024310bcf69a3af
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5d41fec63ff8/disk-abddfcf7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/69db433dc01f/vmlinux-abddfcf7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a00e1270bd95/bzImage-abddfcf7.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2c8f00...@syzkaller.appspotmail.com

------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out
WARNING: CPU: 0 PID: 10598 at net/sched/sch_generic.c:478 dev_watchdog+0xa24/0xc00 net/sched/sch_generic.c:477
Modules linked in:
CPU: 0 PID: 10598 Comm: syz-executor.2 Not tainted 5.15.99-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:dev_watchdog+0xa24/0xc00 net/sched/sch_generic.c:477
Code: 05 e7 a7 78 05 01 48 8b 5c 24 28 48 89 df e8 33 cd e2 ff 48 c7 c7 60 f8 7b 8b 48 89 de 48 89 c2 48 8b 4c 24 10 e8 fc 69 f4 f8 <0f> 0b e9 a4 fc ff ff e8 80 d5 28 f9 0f 0b e9 9b fb ff ff 44 89 e1
RSP: 0018:ffffc90000007b10 EFLAGS: 00010246
RAX: 52caed8c2d8a8200 RBX: ffff8880429a2000 RCX: ffff88806c5f9d00
RDX: 0000000080000101 RSI: 0000000080000101 RDI: 0000000000000000
RBP: 000000010002cb00 R08: ffffffff8166a76c R09: fffff52000000ea5
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880429a2448
R13: ffff8880429a2440 R14: ffff8880429a2540 R15: ffff8880429a2460
FS: 00007f8f1828e700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201d0030 CR3: 0000000048507000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000006
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<IRQ>
call_timer_fn+0x1d7/0x6f0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1737
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1750
__do_softirq+0x3da/0xa10 kernel/softirq.c:558
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0xa0/0x570 kernel/locking/lockdep.c:5593
Code: f1 f1 00 f2 f2 f2 4b 89 04 2c 43 c7 44 2c 09 f2 f2 f2 00 43 c7 44 2c 11 f3 f3 f3 f3 66 43 c7 44 2c 15 f3 f3 43 c6 44 2c 17 f3 <0f> 1f 44 00 00 65 8b 1d b4 50 9f 7e 83 fb 08 0f 83 50 03 00 00 89
RSP: 0018:ffffc90000cc7ae0 EFLAGS: 00000a02
RAX: f2f2f200f1f1f1f1 RBX: ffff88806c5fa1d0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807e54f828
RBP: ffffc90000cc7c38 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000198f64
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8b7820e0
__might_fault+0xb4/0x110 mm/memory.c:5297
do_recvmmsg+0x39d/0x8f0 net/socket.c:2773
__sys_recvmmsg net/socket.c:2846 [inline]
__do_sys_recvmmsg net/socket.c:2869 [inline]
__se_sys_recvmmsg net/socket.c:2862 [inline]
__x64_sys_recvmmsg+0x195/0x240 net/socket.c:2862
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f8f19d3d0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8f1828e168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f8f19e5d050 RCX: 00007f8f19d3d0f9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f8f19d98ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7e2b1d5f R14: 00007f8f1828e300 R15: 0000000000022000
</TASK>
----------------
Code disassembly (best guess):
0: f1 icebp
1: f1 icebp
2: 00 f2 add %dh,%dl
4: f2 f2 4b 89 04 2c repnz repnz mov %rax,(%r12,%r13,1)
a: 43 c7 44 2c 09 f2 f2 movl $0xf2f2f2,0x9(%r12,%r13,1)
11: f2 00
13: 43 c7 44 2c 11 f3 f3 movl $0xf3f3f3f3,0x11(%r12,%r13,1)
1a: f3 f3
1c: 66 43 c7 44 2c 15 f3 movw $0xf3f3,0x15(%r12,%r13,1)
23: f3
24: 43 c6 44 2c 17 f3 movb $0xf3,0x17(%r12,%r13,1)
* 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction
2f: 65 8b 1d b4 50 9f 7e mov %gs:0x7e9f50b4(%rip),%ebx # 0x7e9f50ea
36: 83 fb 08 cmp $0x8,%ebx
39: 0f 83 50 03 00 00 jae 0x38f
3f: 89 .byte 0x89


---
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See https://goo.gl/tpsmEJ for more information about syzbot.
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syzbot will keep track of this issue. See:
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[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 11585e2f8b9d Linux 6.1.17
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15199a70c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=740051f61d5ba775
dashboard link: https://syzkaller.appspot.com/bug?extid=494347f8e04565361f94

compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:

disk image: https://storage.googleapis.com/syzbot-assets/344bdc1161a0/disk-11585e2f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fbb847890efd/vmlinux-11585e2f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/3a06888da390/Image-11585e2f.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:

Reported-by: syzbot+494347...@syzkaller.appspotmail.com

------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out

WARNING: CPU: 1 PID: 4341 at net/sched/sch_generic.c:526 dev_watchdog+0x53c/0x5bc net/sched/sch_generic.c:525
Modules linked in:
CPU: 1 PID: 4341 Comm: syz-fuzzer Not tainted 6.1.17-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023

pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dev_watchdog+0x53c/0x5bc net/sched/sch_generic.c:525
lr : dev_watchdog+0x53c/0x5bc net/sched/sch_generic.c:525
sp : ffff800008017bc0
x29: ffff800008017be0 x28: ffff0000d65e1d10 x27: dfff800000000000
x26: fffffffffffff990 x25: ffff0000d65e1d08 x24: ffff0000d65e1c70
x23: 0000000000000000 x22: 0000000000000000 x21: ffff00015de80000
x20: ffff800018053000 x19: ffff00015de80548 x18: ffff800008016fc0
x17: 0000000000000000 x16: ffff80001224fddc x15: 0000000000000100
x14: 0000000000000000 x13: 00000000000c7608 x12: 0000000000000001
x11: ff808000081b28cc x10: 0000000000000000 x9 : a6c45960d1654d00
x8 : a6c45960d1654d00 x7 : 00000000000c7608 x6 : 00000000000c75e0
x5 : ffff8000080174b8 x4 : ffff800015810780 x3 : ffff80000858f314
x2 : 0000000000000001 x1 : 0000000100000101 x0 : 0000000000000000
Call trace:
dev_watchdog+0x53c/0x5bc net/sched/sch_generic.c:525
call_timer_fn+0x270/0xcf4 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x554/0x718 kernel/time/timer.c:1790
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1803
__do_softirq+0x37c/0xff4 kernel/softirq.c:571
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
call_on_irq_stack+0x2c/0x54 arch/arm64/kernel/entry.S:889
do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650
irq_exit_rcu+0x14/0x84 kernel/softirq.c:662
el0_interrupt+0x80/0x260 arch/arm64/kernel/entry-common.c:717
__el0_irq_handler_common+0x18/0x24 arch/arm64/kernel/entry-common.c:724
el0t_64_irq_handler+0x10/0x1c arch/arm64/kernel/entry-common.c:729
el0t_64_irq+0x18c/0x190 arch/arm64/kernel/entry.S:582
irq event stamp: 3480217
hardirqs last enabled at (3480216): [<ffff80000834aa64>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (3480217): [<ffff80001224ba94>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (3480178): [<ffff8000080337c4>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (3480183): [<ffff80000802b598>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
---[ end trace 0000000000000000 ]---
sl0: transmit timed out, driver error?

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: a343b0dd87b4 Linux 6.1.30
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11f7ebb9280000
kernel config: https://syzkaller.appspot.com/x/.config?x=8ec86bd749598dca

dashboard link: https://syzkaller.appspot.com/bug?extid=494347f8e04565361f94
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16f88815280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1708e999280000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/aebc00d6f042/disk-a343b0dd.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7ff0321ebb5a/vmlinux-a343b0dd.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c928974a56d6/Image-a343b0dd.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+494347...@syzkaller.appspotmail.com

------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out

WARNING: CPU: 0 PID: 0 at net/sched/sch_generic.c:526 dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023

pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
lr : dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
sp : ffff800008007bb0
x29: ffff800008007be0 x28: dfff800000000000 x27: fffffffffffff910
x26: ffff0000d86ddc00 x25: 0000000000000000 x24: 0000000000000110
x23: ffff0000d802a000 x22: ffff0000d86ddc70 x21: ffff0000d802a460
x20: ffff800017ec5000 x19: ffff0000d802a548 x18: ffff800008006fa0
x17: 0000000000000000 x16: ffff8000120fc834 x15: 0000000000000100
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001
x11: ff808000081af018 x10: 0000000000000000 x9 : 601454a117722800
x8 : 601454a117722800 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800008007498 x4 : ffff800015692ac0 x3 : ffff8000085879f4
x2 : 0000000000000001 x1 : 0000000000000102 x0 : 0000000000000000
Call trace:
dev_watchdog+0x5ac/0x62c net/sched/sch_generic.c:525
call_timer_fn+0x1c0/0xa1c kernel/time/timer.c:1474

expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x554/0x718 kernel/time/timer.c:1790
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1803

__do_softirq+0x30c/0xea0 kernel/softirq.c:571
____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:889

do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:84
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0x28c/0x534 kernel/softirq.c:650
irq_exit_rcu+0x14/0x84 kernel/softirq.c:662

__el1_irq arch/arm64/kernel/entry-common.c:472 [inline]
el1_interrupt+0x38/0x68 arch/arm64/kernel/entry-common.c:486
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491
el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:577
arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35
default_idle_call+0x68/0xdc kernel/sched/idle.c:109
cpuidle_idle_call kernel/sched/idle.c:191 [inline]
do_idle+0x1e0/0x514 kernel/sched/idle.c:303
cpu_startup_entry+0x24/0x28 kernel/sched/idle.c:400
rest_init+0x2d8/0x2f0 init/main.c:729
start_kernel+0x0/0x60c init/main.c:890
start_kernel+0x44c/0x60c init/main.c:1145
__primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468
irq event stamp: 1035085
hardirqs last enabled at (1035084): [<ffff8000083435a8>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (1035085): [<ffff8000120f84ec>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last enabled at (1035012): [<ffff800008020d74>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last enabled at (1035012): [<ffff800008020d74>] __do_softirq+0xc14/0xea0 kernel/softirq.c:600
softirqs last disabled at (1035059): [<ffff80000802a994>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79

---[ end trace 0000000000000000 ]---
sl0: transmit timed out, driver error?


---

If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 1fe619a7d252 Linux 5.15.113
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1533a385280000
kernel config: https://syzkaller.appspot.com/x/.config?x=8f10ee30ae29b021

dashboard link: https://syzkaller.appspot.com/bug?extid=2c8f0024310bcf69a3af
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2

userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=163e3a49280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=108d2ccd280000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/1b707a1e1816/disk-1fe619a7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/19cc598a8bbe/vmlinux-1fe619a7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a6cf7269bae5/Image-1fe619a7.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2c8f00...@syzkaller.appspotmail.com

------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out

WARNING: CPU: 1 PID: 3978 at net/sched/sch_generic.c:478 dev_watchdog+0x89c/0xb4c net/sched/sch_generic.c:477
Modules linked in:
CPU: 1 PID: 3978 Comm: syz-executor117 Not tainted 5.15.113-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)

pc : dev_watchdog+0x89c/0xb4c net/sched/sch_generic.c:477
lr : dev_watchdog+0x89c/0xb4c net/sched/sch_generic.c:477
sp : ffff800008017ab0
x29: ffff800008017b00 x28: fffffffffffffc10 x27: ffff0000c9ffa000
x26: 0000000000000002 x25: 0000000000000000 x24: 0000000000000000
x23: ffff0000c9ffa440 x22: ffff0000c9ffa540 x21: dfff800000000000
x20: 00000000ffffbe00 x19: ffff800016cdf000 x18: 0000000000000103
x17: ff80800008335ea8 x16: ffff800011950fac x15: ffff800008335ea8
x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000000100
x11: ff8080000832d950 x10: 0000000000000000 x9 : f4276dccd5aa6000
x8 : f4276dccd5aa6000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800008017218 x4 : ffff8000149bfca0 x3 : ffff80000854dc88
x2 : 0000000000000001 x1 : 0000000100000102 x0 : 0000000000000033
Call trace:
dev_watchdog+0x89c/0xb4c net/sched/sch_generic.c:477
call_timer_fn+0x19c/0x8f0 kernel/time/timer.c:1421
expire_timers kernel/time/timer.c:1466 [inline]
__run_timers+0x554/0x718 kernel/time/timer.c:1737
run_timer_softirq+0x7c/0x114 kernel/time/timer.c:1750
__do_softirq+0x344/0xe20 kernel/softirq.c:558
do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
invoke_softirq kernel/softirq.c:439 [inline]
__irq_exit_rcu+0x28c/0x534 kernel/softirq.c:636
irq_exit+0x14/0x88 kernel/softirq.c:660
handle_domain_irq+0xf4/0x178 kernel/irq/irqdesc.c:710
gic_handle_irq+0x78/0x1c8 drivers/irqchip/irq-gic-v3.c:757
call_on_irq_stack+0x24/0x4c arch/arm64/kernel/entry.S:899
do_interrupt_handler+0x74/0x94 arch/arm64/kernel/entry-common.c:267
el1_interrupt+0x30/0x58 arch/arm64/kernel/entry-common.c:442
el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:458
el1h_64_irq+0x78/0x7c arch/arm64/kernel/entry.S:580
arch_local_irq_enable arch/arm64/include/asm/irqflags.h:35 [inline]
__raw_write_unlock_irq include/linux/rwlock_api_smp.h:267 [inline]
_raw_write_unlock_irq+0xa4/0x134 kernel/locking/spinlock.c:348
release_task+0x1524/0x1730 kernel/exit.c:267
wait_task_zombie kernel/exit.c:1179 [inline]
wait_consider_task+0x1678/0x2914 kernel/exit.c:1406
do_wait_thread kernel/exit.c:1469 [inline]
do_wait+0x2f4/0xac8 kernel/exit.c:1586
kernel_wait4+0x24c/0x400 kernel/exit.c:1749
__do_sys_wait4 kernel/exit.c:1777 [inline]
__se_sys_wait4 kernel/exit.c:1773 [inline]
__arm64_sys_wait4+0x120/0x2d0 kernel/exit.c:1773
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 3975151
hardirqs last enabled at (3975150): [<ffff80000832bae8>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257
hardirqs last disabled at (3975151): [<ffff80001194c640>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387
softirqs last enabled at (3975066): [<ffff8000080300b4>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31
softirqs last disabled at (3975131): [<ffff8000081b573c>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (3975131): [<ffff8000081b573c>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (3975131): [<ffff8000081b573c>] __irq_exit_rcu+0x28c/0x534 kernel/softirq.c:636
---[ end trace 76404d093856c3e3 ]---