syzbot


WARNING in usb_start_wait_urb

Status: upstream: reported C repro on 2025/11/30 19:41
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+e6a50a2e7cbb4f775d04@syzkaller.appspotmail.com
First crash: 52d, last: 35d
Cause bisection: failed (error log, bisect log)
  
Discussions (2)
Title Replies (including bot) Last reply
[PATCH] media: dtv5100: fix BOGUS control dir warning on 0-length reads 1 (1) 2025/12/21 17:15
[syzbot] [usb?] WARNING in usb_start_wait_urb 1 (3) 2025/12/04 20:56
Last patch testing requests (9)
Created Duration User Patch Repo Result
2025/12/28 07:10 40m retest repro linux-next report log
2025/12/28 03:27 33m retest repro linux-next report log
2025/12/28 03:27 19m retest repro linux-next report log
2025/12/27 21:05 31m retest repro linux-next report log
2025/12/27 21:05 32m retest repro linux-next report log
2025/12/27 21:05 25m retest repro linux-next report log
2025/12/27 21:05 20m retest repro linux-next report log
2025/12/27 21:05 28m retest repro linux-next report log
2025/12/04 18:31 1h43m charmitro@posteo.net https://github.com/charmitro/linux.git f231ce51303079e1efe987fd83e04efa3b047988 report log

Sample crash report:
------------[ cut here ]------------
usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0
WARNING: drivers/usb/core/urb.c:414 at 0x0, CPU#0: syz.0.17/6008
Modules linked in:
CPU: 0 UID: 0 PID: 6008 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:usb_submit_urb+0x111c/0x18d0 drivers/usb/core/urb.c:412
Code: b8 00 00 00 00 00 fc ff df 0f b6 44 05 00 84 c0 0f 85 a7 05 00 00 45 0f b6 45 00 48 8b 3c 24 48 8b 74 24 20 4c 89 fa 44 89 f1 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df e9 b7 f2 ff ff 89 e9
RSP: 0018:ffffc90003a9f820 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88814d6a5600 RCX: 0000000080000280
RDX: ffff8881457cc7a0 RSI: ffffffff8c1402c0 RDI: ffffffff8f8ec8f0
RBP: 1ffff11028c70038 R08: 00000000000000c0 R09: 0000000000000000
R10: ffffc90003a9f920 R11: fffff52000753f30 R12: ffff8880307e7100
R13: ffff8881463801c0 R14: 0000000080000280 R15: ffff8881457cc7a0
FS:  00005555678d1500(0000) GS:ffff888125e35000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002580 CR3: 0000000075aaa000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 usb_start_wait_urb+0x115/0x4f0 drivers/usb/core/message.c:59
 usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
 usb_control_msg+0x232/0x3e0 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+0xba7/0xf70 drivers/media/usb/dvb-usb/dib0700_core.c:361
 __i2c_transfer+0x871/0x2110 drivers/i2c/i2c-core-base.c:-1
 i2c_transfer+0x25b/0x3a0 drivers/i2c/i2c-core-base.c:2317
 i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306
 i2cdev_ioctl+0x64b/0x820 drivers/i2c/i2c-dev.c:467
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7678d8f749
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:00007ffdb5c24178 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7678fe5fa0 RCX: 00007f7678d8f749
RDX: 0000200000002580 RSI: 0000000000000707 RDI: 0000000000000004
RBP: 00007f7678e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7678fe5fa0 R14: 00007f7678fe5fa0 R15: 0000000000000003
 </TASK>
----------------
Code disassembly (best guess):
   0:	b8 00 00 00 00       	mov    $0x0,%eax
   5:	00 fc                	add    %bh,%ah
   7:	ff                   	(bad)
   8:	df 0f                	fisttps (%rdi)
   a:	b6 44                	mov    $0x44,%dh
   c:	05 00 84 c0 0f       	add    $0xfc08400,%eax
  11:	85 a7 05 00 00 45    	test   %esp,0x45000005(%rdi)
  17:	0f b6 45 00          	movzbl 0x0(%rbp),%eax
  1b:	48 8b 3c 24          	mov    (%rsp),%rdi
  1f:	48 8b 74 24 20       	mov    0x20(%rsp),%rsi
  24:	4c 89 fa             	mov    %r15,%rdx
  27:	44 89 f1             	mov    %r14d,%ecx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  36:	fc ff df
  39:	e9 b7 f2 ff ff       	jmp    0xfffff2f5
  3e:	89 e9                	mov    %ebp,%ecx

Crashes (79):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/12/09 17:19 linux-next c75caf76ed86 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/05 05:09 linux-next bc04acf4aeca d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/05 03:40 linux-next bc04acf4aeca d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/01 08:24 linux-next 7d31f578f323 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/11/30 10:57 linux-next 7d31f578f323 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/11/30 09:30 linux-next 7d31f578f323 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/11/27 02:02 linux-next 663d0d1af3fa d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/11/26 23:15 linux-next 663d0d1af3fa d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/13 19:04 upstream 9551a26f17d9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in usb_start_wait_urb
2025/12/13 04:09 upstream 187d0801404f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/13 00:50 upstream 187d0801404f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/12 18:29 upstream 187d0801404f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/12 14:14 upstream 187d0801404f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/12 10:20 upstream d358e5254674 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/12 08:25 upstream d358e5254674 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/10 18:29 upstream 0048fbb4011e d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/10 10:16 upstream c9b47175e913 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/10 05:18 upstream c9b47175e913 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/08 14:35 upstream c2f2b01b74be d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/07 22:59 upstream 67a454e6b1c6 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/07 16:38 upstream 37bb2e7217b0 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/07 13:26 upstream 37bb2e7217b0 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/07 07:16 upstream 37bb2e7217b0 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/06 10:57 upstream 7203ca412fc8 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/05 17:02 upstream 2061f18ad76e d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in usb_start_wait_urb
2025/12/05 17:01 upstream 2061f18ad76e d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in usb_start_wait_urb
2025/12/05 08:42 upstream aa833fc394ba d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/05 08:24 upstream aa833fc394ba d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 23:40 upstream 6dfafbd0299a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in usb_start_wait_urb
2025/12/04 21:41 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 21:38 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 21:36 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 21:36 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 14:08 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 11:34 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 07:34 upstream a619fe35ab41 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/04 03:24 upstream 3f9f0252130e d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/03 04:37 upstream 3f9f0252130e d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/02 23:29 upstream 4a26e7032d7d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/02 22:21 upstream 4a26e7032d7d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in usb_start_wait_urb
2025/12/02 21:39 upstream 4a26e7032d7d d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce WARNING in usb_start_wait_urb
2025/12/13 10:30 upstream 9551a26f17d9 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in usb_start_wait_urb
2025/12/12 17:20 upstream 187d0801404f d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in usb_start_wait_urb
2025/12/11 20:56 upstream d358e5254674 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in usb_start_wait_urb
2025/12/11 16:22 upstream d358e5254674 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in usb_start_wait_urb
2025/12/04 18:46 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in usb_start_wait_urb
2025/12/04 12:13 upstream 559e608c4655 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in usb_start_wait_urb
2025/12/12 22:09 upstream 187d0801404f d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in usb_start_wait_urb
2025/12/10 10:15 upstream c9b47175e913 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in usb_start_wait_urb
2025/12/10 07:19 upstream c9b47175e913 d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in usb_start_wait_urb
2025/12/05 19:30 upstream 2061f18ad76e d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in usb_start_wait_urb
2025/12/03 05:08 upstream 44fc84337b6e d1b870e1 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in usb_start_wait_urb
2025/12/05 23:14 upstream d1d36025a617 d1b870e1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in usb_start_wait_urb
2025/12/05 23:14 upstream d1d36025a617 d1b870e1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in usb_start_wait_urb
2025/12/05 23:14 upstream d1d36025a617 d1b870e1 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in usb_start_wait_urb
2025/12/09 15:50 linux-next c75caf76ed86 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/08 19:58 linux-next 82bcd04d124a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/08 06:05 linux-next 82bcd04d124a d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/08 00:50 linux-next 6987d58a9cbc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/06 20:38 linux-next 6987d58a9cbc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/12/06 07:58 linux-next 6987d58a9cbc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/05 15:42 linux-next 6987d58a9cbc d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/12/03 13:58 linux-next b2c27842ba85 d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-rust-kasan-gce WARNING in usb_start_wait_urb
2025/11/27 02:16 linux-next 663d0d1af3fa d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/11/27 02:15 linux-next 663d0d1af3fa d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/11/26 19:34 linux-next 663d0d1af3fa d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
2025/11/26 19:34 linux-next 663d0d1af3fa d6526ea3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in usb_start_wait_urb
* Struck through repros no longer work on HEAD.