[syzbot] [usb?] WARNING in ADDR_ctrl_msg/usb_submit_urb

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: e69c7c175115 Merge tag 'timers_urgent_for_v6.18_rc8' of gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1620c512580000
kernel config: https://syzkaller.appspot.com/x/.config?x=14b6a9313e132a6b
dashboard link: https://syzkaller.appspot.com/bug?extid=427909a2e3b2f83d78cb
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
userspace arch: i386

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2a7727a15216/disk-e69c7c17.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/07f937b0ef40/vmlinux-e69c7c17.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a2ace6f54a3d/bzImage-e69c7c17.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+427909...@syzkaller.appspotmail.com

------------[ cut here ]------------
usb 2-1: BOGUS control dir, pipe 80005680 doesn't match bRequestType c0
WARNING: CPU: 1 PID: 7927 at drivers/usb/core/urb.c:414 usb_submit_urb+0x114d/0x18b0 drivers/usb/core/urb.c:412
Modules linked in:
CPU: 1 UID: 0 PID: 7927 Comm: syz.1.9434 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:usb_submit_urb+0x114d/0x18b0 drivers/usb/core/urb.c:412
Code: df 0f b6 44 05 00 84 c0 0f 85 2a 06 00 00 45 0f b6 45 00 48 c7 c7 c0 18 11 8c 48 8b 34 24 4c 89 fa 44 89 f1 e8 c4 d0 8f fa 90 <0f> 0b 90 90 49 bf 00 00 00 00 00 fc ff df e9 95 f2 ff ff 89 e9 80
RSP: 0018:ffffc9000cd575a0 EFLAGS: 00010246
RAX: 7bec10db12722900 RBX: ffff88802826fd00 RCX: 0000000000080000
RDX: ffffc9000fcd1000 RSI: 0000000000003d41 RDI: 0000000000003d42
RBP: 1ffff11007c64078 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba684 R12: ffff88803d64a100
R13: ffff88803e3203c0 R14: 0000000080005680 R15: ffff88804c9092c0
FS: 0000000000000000(0000) GS:ffff888126238000(0063) knlGS:00000000f543db40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000801c0018 CR3: 0000000040d46000 CR4: 00000000003526f0
Call Trace:
<TASK>
usb_start_wait_urb+0x114/0x4c0 drivers/usb/core/message.c:59
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x232/0x3e0 drivers/usb/core/message.c:154
ce6230_ctrl_msg+0x2c2/0x650 drivers/media/usb/dvb-usb-v2/ce6230.c:61
ce6230_i2c_master_xfer+0x4ce/0x6d0 drivers/media/usb/dvb-usb-v2/ce6230.c:113
__i2c_transfer+0x874/0x2170 drivers/i2c/i2c-core-base.c:-1
i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2317
i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
compat_i2cdev_ioctl+0x5a8/0x5c0 drivers/i2c/i2c-dev.c:575
__do_compat_sys_ioctl fs/ioctl.c:695 [inline]
__se_compat_sys_ioctl fs/ioctl.c:638 [inline]
__ia32_compat_sys_ioctl+0x543/0x840 fs/ioctl.c:638
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306
do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf704d539
Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f543d55c EFLAGS: 00000206 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000000707
RDX: 0000000080000a40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
----------------
Code disassembly (best guess):
0: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
4: 10 07 adc %al,(%rdi)
6: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
a: 10 08 adc %cl,(%rax)
c: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
20: 00 51 52 add %dl,0x52(%rcx)
23: 55 push %rbp
24: 89 e5 mov %esp,%ebp
26: 0f 34 sysenter
28: cd 80 int $0x80
* 2a: 5d pop %rbp <-- trapping instruction
2b: 5a pop %rdx
2c: 59 pop %rcx
2d: c3 ret
2e: 90 nop
2f: 90 nop
30: 90 nop
31: 90 nop
32: 90 nop
33: 90 nop
34: 90 nop
35: 90 nop
36: 90 nop
37: 90 nop
38: 90 nop
39: 90 nop
3a: 90 nop
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.
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup

[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: cc3aa43b44bd Add linux-next specific files for 20251219
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1336269a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=da1bc82c6189c463

dashboard link: https://syzkaller.appspot.com/bug?extid=427909a2e3b2f83d78cb
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11698074580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1736269a580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/30bf539e6f28/disk-cc3aa43b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0e2f8b08e342/vmlinux-cc3aa43b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ec7ee6ece11f/bzImage-cc3aa43b.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+427909...@syzkaller.appspotmail.com

------------[ cut here ]------------

usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: drivers/usb/core/urb.c:414 at usb_submit_urb+0x105c/0x18d0 drivers/usb/core/urb.c:412, CPU#0: syz.0.17/6000
Modules linked in:
CPU: 0 UID: 0 PID: 6000 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025

RIP: 0010:usb_submit_urb+0x111c/0x18d0 drivers/usb/core/urb.c:412
Code: b8 00 00 00 00 00 fc ff df 0f b6 44 05 00 84 c0 0f 85 a7 05 00 00 45 0f b6 45 00 48 8b 3c 24 48 8b 74 24 20 4c 89 fa 44 89 f1 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df e9 b7 f2 ff ff 89 e9
RSP: 0018:ffffc9000ecf7760 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888032177a00 RCX: 0000000080000280
RDX: ffff8880203d1e80 RSI: ffffffff8c341f40 RDI: ffffffff8faef860
RBP: 1ffff110283df6ec R08: 00000000000000c0 R09: 0000000000000000
R10: ffffc9000ecf7860 R11: fffff52001d9ef18 R12: ffff8881426d1100
R13: ffff888141efb760 R14: 0000000080000280 R15: ffff8880203d1e80
FS: 0000555584472500(0000) GS:ffff888125c25000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30663fff CR3: 00000000762fe000 CR4: 00000000003526f0
Call Trace:
<TASK>
usb_start_wait_urb+0x115/0x4f0 drivers/usb/core/message.c:59

usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x232/0x3e0 drivers/usb/core/message.c:154

ce6230_ctrl_msg+0x2b1/0x660 drivers/media/usb/dvb-usb-v2/ce6230.c:61
ce6230_i2c_master_xfer+0x4ce/0x6d0 drivers/media/usb/dvb-usb-v2/ce6230.c:113
__i2c_transfer+0x871/0x2110 drivers/i2c/i2c-core-base.c:-1

i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2317
i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306

i2cdev_ioctl+0x64b/0x820 drivers/i2c/i2c-dev.c:467
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f10c3b8f749
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe182be228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f10c3de5fa0 RCX: 00007f10c3b8f749
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f10c3c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f10c3de5fa0 R14: 00007f10c3de5fa0 R15: 0000000000000003

</TASK>
----------------
Code disassembly (best guess):

0: b8 00 00 00 00 mov $0x0,%eax
5: 00 fc add %bh,%ah
7: ff (bad)
8: df 0f fisttps (%rdi)
a: b6 44 mov $0x44,%dh
c: 05 00 84 c0 0f add $0xfc08400,%eax
11: 85 a7 05 00 00 45 test %esp,0x45000005(%rdi)
17: 0f b6 45 00 movzbl 0x0(%rbp),%eax
1b: 48 8b 3c 24 mov (%rsp),%rdi
1f: 48 8b 74 24 20 mov 0x20(%rsp),%rsi
24: 4c 89 fa mov %r15,%rdx
27: 44 89 f1 mov %r14d,%ecx
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
36: fc ff df
39: e9 b7 f2 ff ff jmp 0xfffff2f5
3e: 89 e9 mov %ebp,%ecx


---
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]

For archival purposes, forwarding an incoming command email to
linux-...@vger.kernel.org, syzkall...@googlegroups.com.

***

Subject: [PATCH 1/1] media: dvb-usb-v2: ce6230: fix bug when sending usb_control_msg of size 0
Author: jakovn...@gmail.com

#syz test

---
drivers/media/usb/dvb-usb-v2/ce6230.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/media/usb/dvb-usb-v2/ce6230.c b/drivers/media/usb/dvb-usb-v2/ce6230.c
index 7ebaf3ee4491..dd3aa45b56a3 100644
--- a/drivers/media/usb/dvb-usb-v2/ce6230.c
+++ b/drivers/media/usb/dvb-usb-v2/ce6230.c
@@ -23,6 +23,13 @@ static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
value = req->value;
index = req->index;

+ if (!req->data_len) {
+ dev_err(&d->udev->dev,
+ "%s: cannot send crtl_msg of size 0",
+ KBUILD_MODNAME);
+ return -ENOBUFS;
+ }
+
switch (req->cmd) {
case I2C_READ:
case DEMOD_READ:
--
2.53.0