syzbot


WARNING in dtv5100_i2c_msg/usb_submit_urb

Status: upstream: reported C repro on 2026/02/27 05:36
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+b1e2462b4ca8d357fe18@syzkaller.appspotmail.com
First crash: 4d23h, last: 4d19h
Bug presence (1)
Date Name Commit Repro Result
2026/02/27 upstream (ToT) a75cb869a8cc C [report] WARNING in dtv5100_i2c_msg/usb_submit_urb
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in dtv5100_i2c_msg/usb_submit_urb usb -1 C error 435 21h25m 285d 0/29 upstream: reported C repro on 2025/05/22 06:36
linux-6.6 WARNING in dtv5100_i2c_msg/usb_submit_urb origin:upstream -1 C error 8 36d 200d 0/2 upstream: reported C repro on 2025/08/15 23:44
linux-6.1 WARNING in dtv5100_i2c_msg/usb_submit_urb origin:upstream -1 C error 11 46d 153d 0/3 upstream: reported C repro on 2025/10/01 22:05

Sample crash report:
------------[ cut here ]------------
usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: CPU: 1 PID: 4432 at drivers/usb/core/urb.c:412 usb_submit_urb+0x11a5/0x1910 drivers/usb/core/urb.c:410
Modules linked in:
CPU: 1 PID: 4432 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:usb_submit_urb+0x11a5/0x1910 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 a0 17 c5 8a 48 8b 34 24 4c 89 e2 44 89 f1 e8 4b 2b d3 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:ffffc900031ef808 EFLAGS: 00010246
RAX: 75a8dc1b4ee8af00 RBX: ffff8881445f9a00 RCX: ffff888077599dc0
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1102905046e R08: ffff8880b9133d7f R09: 1ffff110172267af
R10: dffffc0000000000 R11: ffffed10172267b0 R12: ffff8881427bc7a8
R13: ffff88807c6d80f8 R14: 0000000080000280 R15: ffff888148282370
FS:  0000555559662500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d3c478fc50 CR3: 0000000020735000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 usb_start_wait_urb+0x128/0x4e0 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
 dtv5100_i2c_msg+0x231/0x2f0 drivers/media/usb/dvb-usb/dtv5100.c:65
 dtv5100_i2c_xfer+0x47c/0x650 drivers/media/usb/dvb-usb/dtv5100.c:86
 __i2c_transfer+0x880/0x20b0 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25d/0x3a0 drivers/i2c/i2c-core-base.c:2330
 i2cdev_ioctl_rdwr+0x3dc/0x6d0 drivers/i2c/i2c-dev.c:297
 i2cdev_ioctl+0x610/0x7b0 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: 0033:0x7fdb35d97799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe83137d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdb36010fa0 RCX: 00007fdb35d97799
RDX: 00002000000005c0 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007fdb35e2dbd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdb36010fac R14: 00007fdb36010fa0 R15: 00007fdb36010fa0
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/27 09:41 linux-5.15.y 3330a8d33e08 a2f13f71 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2026/02/27 05:36 linux-5.15.y 3330a8d33e08 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
* Struck through repros no longer work on HEAD.