syzbot

 sign-in | mailing list | source | docs
🐞 Open [898]
🐞 Fixed [141]
🐞 Invalid [1041]
⬇ Missing Backports [73]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
💬 Send us feedback

WARNING in dtv5100_i2c_msg/usb_submit_urb

Status: upstream: reported C repro on 2025/10/01 22:05
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+b04e1cf3a4c05ba313be@syzkaller.appspotmail.com
First crash: 171d, last: 1d04h
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2025/10/10 upstream (ToT) 5472d60c129f 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 480 7h43m 304d 0/29 upstream: reported C repro on 2025/05/22 06:36
linux-5.15 WARNING in dtv5100_i2c_msg/usb_submit_urb origin:upstream -1 C 2 23d 23d 0/3 upstream: reported C repro on 2026/02/27 05:36
linux-6.6 WARNING in dtv5100_i2c_msg/usb_submit_urb origin:upstream -1 C error 10 2d09h 218d 0/2 upstream: reported C repro on 2025/08/15 23:44
▶ ▼ Fix bisection attempts (3)
Created Duration User Patch Repo Result
2026/02/15 10:08 0m bisect fix linux-6.1.y error job log
2026/01/16 08:34 1h25m bisect fix linux-6.1.y OK (0) job log log
2025/12/13 14:14 1h41m bisect fix linux-6.1.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: 1 PID: 4422 at drivers/usb/core/urb.c:413 usb_submit_urb+0x11ae/0x1920 drivers/usb/core/urb.c:411
Modules linked in:
CPU: 1 PID: 4422 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+0x11ae/0x1920 drivers/usb/core/urb.c:411
Code: ff df 0f b6 44 05 00 84 c0 0f 85 6f 06 00 00 45 0f b6 07 48 c7 c7 40 a1 2e 8b 48 8b 74 24 18 4c 89 e2 44 89 f1 e8 32 59 27 fb <0f> 0b 49 bc 00 00 00 00 00 fc ff df e9 93 f3 ff ff 89 e9 80 e1 07
RSP: 0018:ffffc90003337588 EFLAGS: 00010246
RAX: bfbf4680566a1800 RBX: ffff888143fcae00 RCX: ffff88807a47bb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 1ffff11004f5b03c R08: ffffc90003337207 R09: 1ffff92000666e40
R10: dffffc0000000000 R11: fffff52000666e41 R12: ffff888024701938
R13: ffff888076aa40f8 R14: 0000000080000280 R15: ffff888027ad81e0
FS:  0000555572dfd500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056484984c518 CR3: 0000000026e1c000 CR4: 00000000003506e0
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+0x1a0/0x3b0 drivers/media/usb/dvb-usb/dtv5100.c:91
 __i2c_transfer+0x880/0x22b0 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25d/0x3a0 drivers/i2c/i2c-core-base.c:2333
 i2c_transfer_buffer_flags+0x10a/0x1a0 drivers/i2c/i2c-core-base.c:2361
 i2c_master_send include/linux/i2c.h:110 [inline]
 i2cdev_write+0x87/0x120 drivers/i2c/i2c-dev.c:175
 do_loop_readv_writev fs/read_write.c:-1 [inline]
 do_iter_write+0x4ac/0xb10 fs/read_write.c:863
 vfs_writev fs/read_write.c:934 [inline]
 do_writev+0x27b/0x480 fs/read_write.c:977
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe94259c799
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:00007ffe17af5678 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007fe942815fa0 RCX: 00007fe94259c799
RDX: 0000000000000001 RSI: 0000200000000640 RDI: 0000000000000004
RBP: 00007fe942632c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe942815fac R14: 00007fe942815fa0 R15: 00007fe942815fa0
 </TASK>

Crashes (16):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/19 10:44 linux-6.1.y f2ddafa93a25 0199f9a1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/03 08:42 linux-6.1.y 882efbdd9d34 49379ee0 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2026/03/21 06:03 linux-6.1.y f2ddafa93a25 5b92003d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2026/03/19 10:06 linux-6.1.y f2ddafa93a25 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2026/03/19 10:04 linux-6.1.y f2ddafa93a25 0199f9a1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2026/03/10 10:39 linux-6.1.y f2ddafa93a25 6972f302 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/11/11 06:58 linux-6.1.y f6e38ae624cf 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/25 22:13 linux-6.1.y 8e6e2188d949 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/25 22:07 linux-6.1.y 8e6e2188d949 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/15 15:54 linux-6.1.y c2fda4b3f577 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/15 15:54 linux-6.1.y c2fda4b3f577 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/10 08:54 linux-6.1.y 882efbdd9d34 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/02 10:10 linux-6.1.y 7b34dc04e4ff 267f56c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/02 10:09 linux-6.1.y 7b34dc04e4ff 267f56c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/01 22:05 linux-6.1.y 7b34dc04e4ff a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
2025/10/01 22:04 linux-6.1.y 7b34dc04e4ff a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in dtv5100_i2c_msg/usb_submit_urb
* Struck through repros no longer work on HEAD.