syzbot


WARNING in dib0700_i2c_xfer/usb_submit_urb

Status: upstream: reported C repro on 2025/11/03 10:21
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+32addfbe8c14f082797e@syzkaller.appspotmail.com
First crash: 69d, last: 4d00h
Fix bisection the fix commit could be any of (bisect log):
  233317cc29dd arc: Fix __fls() const-foldability via __builtin_clzl()
  fea338c7e46f selftests/bpf: Upon failures, exit with code 1 in test_xsk.sh
  3e121479021d irqchip/gic-v2m: Handle Multiple MSI base IRQ Alignment
  8d6791c480f2 cpufreq/longhaul: handle NULL policy in longhaul_exit
  338f490a04c6 ACPI: PRM: Skip handlers with NULL handler_address or NULL VA
  
Bug presence (1)
Date Name Commit Repro Result
2026/01/02 upstream (ToT) bbbc721033c0 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 208d 214d 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 45d 120d 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 346 1d02h 293d 0/29 upstream: reported C repro on 2025/03/24 18:18
linux-5.15 WARNING in dib0700_i2c_xfer/usb_submit_urb origin:upstream -1 C 10 11d 158d 0/3 upstream: reported C repro on 2025/08/06 23:36

Sample crash report:
------------[ cut here ]------------
usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: CPU: 0 PID: 5945 at drivers/usb/core/urb.c:413 usb_submit_urb+0x10a1/0x17d0 drivers/usb/core/urb.c:411
Modules linked in:
CPU: 0 PID: 5945 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:usb_submit_urb+0x10a1/0x17d0 drivers/usb/core/urb.c:411
Code: df 0f b6 44 05 00 84 c0 0f 85 2d 06 00 00 45 0f b6 45 00 48 c7 c7 00 cb 4a 8b 48 8b 74 24 20 4c 89 fa 44 89 f1 e8 cf 51 00 fb <0f> 0b 49 bc 00 00 00 00 00 fc ff df e9 96 f4 ff ff 89 e9 80 e1 07
RSP: 0018:ffffc90003447870 EFLAGS: 00010246
RAX: 4ab83aabe587c600 RBX: ffff888076d2f800 RCX: ffff88801de90000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 1ffff110049a9d13 R08: ffffc90003447467 R09: 1ffff92000688e8c
R10: dffffc0000000000 R11: fffff52000688e8d R12: dffffc0000000000
R13: ffff888024d4e898 R14: 0000000080000280 R15: ffff888019e9db90
FS:  0000555575e69500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f22179eae9c CR3: 0000000077214000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 usb_start_wait_urb+0x115/0x4b0 drivers/usb/core/message.c:59
 usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
 usb_control_msg+0x233/0x3e0 drivers/usb/core/message.c:154
 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+0xb92/0xf60 drivers/media/usb/dvb-usb/dib0700_core.c:361
 __i2c_transfer+0x868/0x2080 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x250/0x390 drivers/i2c/i2c-core-base.c:2328
 i2cdev_ioctl_rdwr+0x3b0/0x690 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x646/0x7e0 drivers/i2c/i2c-dev.c:458
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4a7118efc9
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:00007ffda7cf2db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4a713e5fa0 RCX: 00007f4a7118efc9
RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f4a71211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4a713e5fa0 R14: 00007f4a713e5fa0 R15: 0000000000000003
 </TASK>

Crashes (11):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/03 16:26 linux-6.6.y 0a805b6ea8cd 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/03 13:13 linux-6.6.y 0a805b6ea8cd 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2026/01/08 00:12 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2026/01/02 14:43 linux-6.6.y 5fa4793a2d2d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/28 18:21 linux-6.6.y 1e89a1be4fe9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/22 20:26 linux-6.6.y 0a805b6ea8cd 4fb8ef37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/11 19:40 linux-6.6.y 0a805b6ea8cd 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/05 08:50 linux-6.6.y 0a805b6ea8cd a6c9c731 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/03 18:00 linux-6.6.y 0a805b6ea8cd 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/03 10:30 linux-6.6.y 0a805b6ea8cd 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
2025/11/03 10:20 linux-6.6.y 0a805b6ea8cd 2c50b6a9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in dib0700_i2c_xfer/usb_submit_urb
* Struck through repros no longer work on HEAD.