syzbot


WARNING in dib0700_i2c_xfer/usb_submit_urb

Status: upstream: reported C repro on 2025/08/06 23:36
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+4ae72cdc1d53ecb1f5f8@syzkaller.appspotmail.com
First crash: 164d, last: 2d08h
Bug presence (1)
Date Name Commit Repro Result
2025/08/09 upstream (ToT) c30a13538d9f C [report] WARNING in dib0700_i2c_xfer/usb_submit_urb
Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in dib0700_i2c_xfer/usb_submit_urb origin:upstream -1 C done 3 215d 220d 3/3 fixed on 2025/07/21 10:23
linux-6.1 WARNING in dib0700_i2c_xfer/usb_submit_urb (2) origin:upstream -1 C error 11 51d 126d 0/3 upstream: reported C repro on 2025/09/13 22:56
upstream WARNING in dib0700_i2c_xfer/usb_submit_urb usb -1 C error 380 5h07m 299d 0/29 upstream: reported C repro on 2025/03/24 18:18
linux-6.6 WARNING in dib0700_i2c_xfer/usb_submit_urb origin:upstream -1 C inconclusive 16 2d07h 75d 0/2 upstream: reported C repro on 2025/11/03 10:21
Last patch testing requests (4)
Created Duration User Patch Repo Result
2025/12/31 14:32 9m retest repro linux-5.15.y report log
2025/12/04 00:03 10m retest repro linux-5.15.y report log
2025/09/08 15:40 14m retest repro linux-5.15.y report log
2025/09/08 15:40 9m retest repro linux-5.15.y report log
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2025/10/21 12:40 2h02m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
------------[ cut here ]------------
usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: CPU: 0 PID: 4312 at drivers/usb/core/urb.c:412 usb_submit_urb+0x119f/0x1900 drivers/usb/core/urb.c:410
Modules linked in:
CPU: 0 PID: 4312 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:usb_submit_urb+0x119f/0x1900 drivers/usb/core/urb.c:410
Code: fc ff df 0f b6 44 05 00 84 c0 0f 85 6c 06 00 00 45 0f b6 07 48 c7 c7 80 ca a4 8a 48 8b 34 24 4c 89 e2 44 89 f1 e8 01 59 c8 03 <0f> 0b 49 bc 00 00 00 00 00 fc ff df e9 92 f3 ff ff 89 e9 80 e1 07
RSP: 0018:ffffc900035ff868 EFLAGS: 00010246
RAX: 0d67ee9d08460100 RBX: ffff88802321f500 RCX: ffff888027301dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff110051cb777 R08: dffffc0000000000 R09: ffffed10172067b0
R10: ffffed10172067b0 R11: 1ffff110172067af R12: ffff88814882fd48
R13: ffff888077f1e0f8 R14: 0000000080000280 R15: ffff888028e5bbb8
FS:  0000555572bb1500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcecd641e9c CR3: 0000000020d92000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 usb_start_wait_urb+0x111/0x4b0 drivers/usb/core/message.c:58
 usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
 usb_control_msg+0x22f/0x3e0 drivers/usb/core/message.c:153
 dib0700_ctrl_rd drivers/media/usb/dvb-usb/dib0700_core.c:95 [inline]
 dib0700_i2c_xfer_legacy drivers/media/usb/dvb-usb/dib0700_core.c:315 [inline]
 dib0700_i2c_xfer+0xbbd/0xf80 drivers/media/usb/dvb-usb/dib0700_core.c:361
 __i2c_transfer+0x864/0x2060 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x24c/0x390 drivers/i2c/i2c-core-base.c:2330
 i2cdev_ioctl_rdwr+0x3da/0x6c0 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x5ba/0x750 drivers/i2c/i2c-dev.c:458
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0d82944749
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:00007ffef3e02f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0d82b9afa0 RCX: 00007f0d82944749
RDX: 0000200000000200 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f0d829c8f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0d82b9afa0 R14: 00007f0d82b9afa0 R15: 0000000000000003
 </TASK>

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/16 00:44 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/08/09 05:54 linux-5.15.y c79648372d02 32a0e5ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/08/09 04:28 linux-5.15.y c79648372d02 32a0e5ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2026/01/16 00:09 linux-5.15.y 68efe5a6c16a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/19 13:51 linux-5.15.y cc5ec8769306 26ee5237 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/12 09:27 linux-5.15.y cc5ec8769306 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/06 08:10 linux-5.15.y cc5ec8769306 a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/09/16 08:37 linux-5.15.y 43bb85222e53 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/09/16 08:36 linux-5.15.y 43bb85222e53 e2beed91 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/08/24 15:46 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/08/24 15:41 linux-5.15.y c79648372d02 bf27483f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/08/06 23:35 linux-5.15.y c79648372d02 9a42d6b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
* Struck through repros no longer work on HEAD.