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From: syzbot <syzbot+381102a7292a374fe8a7@syzkaller.appspotmail.com>
To: chunkeey@googlemail.com, linux-kernel@vger.kernel.org,
	 linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org,
	 netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: [syzbot] [wireless?] [usb?] WARNING in __carl9170_tx_process_status
Date: Fri, 03 Jul 2026 22:46:25 -0700	[thread overview]
Message-ID: <6a489e31.b42ede87.8bd1.0009.GAE@google.com> (raw)

Hello,

syzbot found the following issue on:

HEAD commit:    dc59e4fea9d8 Linux 7.2-rc1
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
console output: https://syzkaller.appspot.com/x/log.txt?x=1792f9fe580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=6ec4d592e55f7960
dashboard link: https://syzkaller.appspot.com/bug?extid=381102a7292a374fe8a7
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1125c289580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17049e89580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8540695a33d7/disk-dc59e4fe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e144bb9cdc33/vmlinux-dc59e4fe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6e3051bf9301/bzImage-dc59e4fe.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+381102a7292a374fe8a7@syzkaller.appspotmail.com

------------[ cut here ]------------
__lockdep_enabled && !this_cpu_read(hardirqs_enabled)
WARNING: kernel/softirq.c:430 at __local_bh_enable_ip+0xbd/0x120 kernel/softirq.c:430, CPU#0: swapper/0/0
Modules linked in:
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__local_bh_enable_ip+0xbd/0x120 kernel/softirq.c:430
Code: 00 e8 a7 d1 0b 00 e8 62 10 45 00 fb 65 8b 05 7a c3 86 0b 85 c0 74 50 5b 5d c3 cc cc cc cc 65 8b 05 04 03 87 0b 85 c0 75 a0 90 <0f> 0b 90 eb 9a e8 59 12 45 00 eb 9b 48 89 ef e8 0f 0b 19 00 eb a4
RSP: 0018:ffffc90000007aa8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 1ffffffff15e7114
RDX: 0000000000000001 RSI: 0000000000000201 RDI: ffffffff8446537b
RBP: ffffffff8446537b R08: 0000000000000000 R09: ffffed1023c03a8b
R10: ffff88811e01d45b R11: 0000000000000000 R12: ffff88811c516705
R13: dffffc0000000000 R14: ffff88811e01b220 R15: ffff88811e01d440
FS:  0000000000000000(0000) GS:ffff888268640000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdd9de6dc4 CR3: 00000001197ae000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 carl9170_get_queued_skb drivers/net/wireless/ath/carl9170/tx.c:531 [inline]
 __carl9170_tx_process_status+0x13b/0x620 drivers/net/wireless/ath/carl9170/tx.c:668
 carl9170_tx_process_status+0xf6/0x230 drivers/net/wireless/ath/carl9170/tx.c:701
 carl9170_handle_command_response+0x3c8/0xc50 drivers/net/wireless/ath/carl9170/rx.c:219
 carl9170_usb_rx_irq_complete+0xfc/0x1b0 drivers/net/wireless/ath/carl9170/usb.c:307
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 dummy_timer+0xda1/0x36c0 drivers/usb/gadget/udc/dummy_hcd.c:2005
 __run_hrtimer kernel/time/hrtimer.c:2032 [inline]
 __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2096
 hrtimer_run_softirq+0x17d/0x2c0 kernel/time/hrtimer.c:2113
 handle_softirqs+0x1dd/0x990 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x160/0x210 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: 90 ac 01 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 03 8f 0b 00 fb f4 <e9> 3c f6 02 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffffff89407e20 EFLAGS: 00000242
RAX: 0000000000096967 RBX: ffffffff8942c8c0 RCX: ffffffff877af8e5
RDX: 0000000000000000 RSI: ffffffff890edf5a RDI: ffffffff87b15200
RBP: fffffbfff1285918 R08: 0000000000000001 R09: ffffed103eac670d
R10: ffff8881f563386b R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 1ffffffff1280fc8 R15: dffffc0000000000
 arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline]
 default_idle+0x9/0x10 arch/x86/kernel/process.c:768
 default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x3a7/0x5b0 kernel/sched/idle.c:355
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:454
 rest_init+0x251/0x260 init/main.c:717
 start_kernel+0x489/0x490 init/main.c:1175
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x12b/0x130 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x158
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	ac                   	lods   %ds:(%rsi),%al
   2:	01 c3                	add    %eax,%ebx
   4:	cc                   	int3
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 03 8f 0b 00 	verw   0xb8f03(%rip)        # 0xb8f2b
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	e9 3c f6 02 00       	jmp    0x2f66b <-- trapping instruction
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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If the report is already addressed, let syzbot know by replying with:
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             reply	other threads:[~2026-07-04  5:46 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-04  5:46 syzbot [this message]
2026-07-06 17:48 ` Forwarded: Re: [syzbot] [wireless?] [usb?] WARNING in __carl9170_tx_process_status syzbot
2026-07-06 18:16 ` syzbot
2026-07-07 12:54 ` Forwarded: [PATCH] carl9170: fix locking in carl9170_get_queued_skb syzbot
     [not found] <CAE2+fR8Rh5m_YMhjJ5aM13mW96mSoun2jauAZbymGroKg-=2zA@mail.gmail.com>
2026-07-06 18:11 ` [syzbot] [wireless?] [usb?] WARNING in __carl9170_tx_process_status syzbot
     [not found] <CAE2+fR_kivaRAa80wRpq3=FbA8xg0eqLKfg9obHa9gUm9UGj_A@mail.gmail.com>
2026-07-06 18:47 ` syzbot

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