syzbot


WARNING in __carl9170_tx_process_status

Status: upstream: reported C repro on 2026/07/04 05:46
Subsystems: wireless usb
Labels: prio:high
[Documentation on labels]
Reported-by: syzbot+381102a7292a374fe8a7@syzkaller.appspotmail.com
First crash: 11d, last: 2d20h
✨ AI Jobs (1)
ID Workflow Result Correct Bug Created Started Finished Revision Error
d7a6850a-23d3-4c7c-b891-083c503f2d62 assessment-security DenialOfService: ✅ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ✅ RemoteTrigger: ✅ Unprivileged: ✅ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌ WARNING in __carl9170_tx_process_status 2026/07/05 07:19 2026/07/05 07:19 2026/07/05 07:58 93f579545ae410f5bccfa141d2e7bf03178f036c

			
		
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] [usb?] WARNING in __carl9170_tx_process_status 0 (4) 2026/07/07 12:54
Last patch testing requests (3)
Created Duration User Patch Repo Result
2026/07/07 12:54 17m malayarout91@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing report log
2026/07/06 18:16 5m malayarout91@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing error
2026/07/06 17:48 6m malayarout91@gmail.com patch https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing error

Sample crash report:
------------[ 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: syz.0.49/6026
Modules linked in:
CPU: 0 UID: 0 PID: 6026 Comm: syz.0.49 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__local_bh_enable_ip+0xbd/0x120 kernel/softirq.c:430
Code: 00 e8 37 5f 0c 00 e8 32 b2 49 00 fb 65 8b 05 7a d8 9a 12 85 c0 74 50 5b 5d c3 cc cc cc cc 65 8b 05 64 1a 9b 12 85 c0 75 a0 90 <0f> 0b 90 eb 9a e8 29 b4 49 00 eb 9b 48 89 ef e8 0f 12 1d 00 eb a4
RSP: 0018:ffffc90000007aa8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000201 RCX: 1ffffffff2244d0c
RDX: 0000000000000001 RSI: 0000000000000201 RDI: ffffffff872778db
RBP: ffffffff872778db R08: 0000000000000000 R09: ffffed1005d30a8b
R10: ffff88802e98545b R11: 0000000000000000 R12: ffff888025ff0305
R13: dffffc0000000000 R14: ffff88802e983220 R15: ffff88802e985440
FS:  0000555585ba3500(0000) GS:ffff8880d5deb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f162e951000 CR3: 000000003b5ca000 CR4: 0000000000352ef0
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+0x1ea/0x9b0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0x162/0x210 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+0xa3/0xc0 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:__sanitizer_cov_trace_const_cmp4+0x8/0x20 kernel/kcov.c:314
Code: bf 03 00 00 00 e9 58 fe ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 2a fe ff ff 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc900034a7ca0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88802e740000 RCX: ffffffff87ea4a48
RDX: ffff888030ec8000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000000002a0
R13: 000000000000000c R14: ffff88802e740438 R15: ffffc900034a7d08
 raw_process_ep_io+0x658/0xc40 drivers/usb/gadget/legacy/raw_gadget.c:1115
 raw_ioctl_ep_write drivers/usb/gadget/legacy/raw_gadget.c:1153 [inline]
 raw_ioctl+0x25a/0x2b80 drivers/usb/gadget/legacy/raw_gadget.c:1325
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f162e59daeb
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffc09428840 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000082 RCX: 00007f162e59daeb
RDX: 00007ffc094288c0 RSI: 0000000040085507 RDI: 0000000000000003
RBP: 0000000000000003 R08: 00007f162e950320 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000200000000080
R13: 000000000000000c R14: 00007f162e825fa0 R15: 00007f162e825fa0
 </TASK>
----------------
Code disassembly (best guess):
   0:	bf 03 00 00 00       	mov    $0x3,%edi
   5:	e9 58 fe ff ff       	jmp    0xfffffe62
   a:	0f 1f 84 00 00 00 00 	nopl   0x0(%rax,%rax,1)
  11:	00
  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:	90                   	nop
  1c:	90                   	nop
  1d:	90                   	nop
  1e:	90                   	nop
  1f:	90                   	nop
  20:	90                   	nop
  21:	90                   	nop
  22:	f3 0f 1e fa          	endbr64
  26:	48 8b 0c 24          	mov    (%rsp),%rcx
* 2a:	89 f2                	mov    %esi,%edx <-- trapping instruction
  2c:	89 fe                	mov    %edi,%esi
  2e:	bf 05 00 00 00       	mov    $0x5,%edi
  33:	e9 2a fe ff ff       	jmp    0xfffffe62
  38:	66                   	data16
  39:	2e                   	cs
  3a:	0f                   	.byte 0xf
  3b:	1f                   	(bad)
  3c:	84 00                	test   %al,(%rax)

Crashes (6):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/12 16:23 upstream 44696aa3a489 d78ea535 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in __carl9170_tx_process_status
2026/07/04 06:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dc59e4fea9d8 fcece630 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING in __carl9170_tx_process_status
2026/07/04 05:55 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dc59e4fea9d8 fcece630 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING in __carl9170_tx_process_status
2026/07/04 05:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dc59e4fea9d8 fcece630 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING in __carl9170_tx_process_status
2026/07/04 04:18 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dc59e4fea9d8 fcece630 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING in __carl9170_tx_process_status
2026/07/04 03:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dc59e4fea9d8 fcece630 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb WARNING in __carl9170_tx_process_status
* Struck through repros no longer work on HEAD.