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: 18d, last: 1d04h
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 (2)
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 69d 75d 3/3 fixed on 2025/07/21 10:23
upstream WARNING in dib0700_i2c_xfer/usb_submit_urb usb -1 C error 49 8h38m 154d 0/29 upstream: reported C repro on 2025/03/24 18:18

Sample crash report:
------------[ cut here ]------------
usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: CPU: 0 PID: 4320 at drivers/usb/core/urb.c:412 usb_submit_urb+0x1200/0x1980 drivers/usb/core/urb.c:410
Modules linked in:
CPU: 0 PID: 4320 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:usb_submit_urb+0x1200/0x1980 drivers/usb/core/urb.c:410
Code: ff df 0f b6 44 05 00 84 c0 0f 85 7d 06 00 00 45 0f b6 07 48 c7 c7 a0 50 a4 8a 48 8b 74 24 30 4c 89 e2 44 89 f1 e8 a0 3b cf 03 <0f> 0b 49 bd 00 00 00 00 00 fc ff df e9 3b f3 ff ff 89 e9 80 e1 07
RSP: 0018:ffffc9000307f868 EFLAGS: 00010246
RAX: 0e2faad507173c00 RBX: ffff888142ba7600 RCX: ffff88801fec5940
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1102847e168 R08: dffffc0000000000 R09: ffffed10172067a8
R10: ffffed10172067a8 R11: 1ffff110172067a7 R12: ffff8881423f3528
R13: dffffc0000000000 R14: 0000000080000280 R15: ffff8881423f0b40
FS:  000055558e543500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff80aa82e9c CR3: 0000000022fbe000 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: 0033:0x7f5bf464cbe9
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:00007ffd82b41fc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5bf4873fa0 RCX: 00007f5bf464cbe9
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f5bf46cfe19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5bf4873fa0 R14: 00007f5bf4873fa0 R15: 0000000000000003
 </TASK>

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
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
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.