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charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: cc3aa43b44bd Add linux-next specific files for 20251219 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1336269a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=da1bc82c6189c463 dashboard link: https://syzkaller.appspot.com/bug?extid=427909a2e3b2f83d78cb compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11698074580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1736269a580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/30bf539e6f28/disk-cc3aa43b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0e2f8b08e342/vmlinux-cc3aa43b.xz kernel image: https://storage.googleapis.com/syzbot-assets/ec7ee6ece11f/bzImage-cc3aa43b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+427909a2e3b2f83d78cb@syzkaller.appspotmail.com ------------[ cut here ]------------ usb 1-1: BOGUS control dir, pipe 80000280 doesn't match bRequestType c0 WARNING: drivers/usb/core/urb.c:414 at usb_submit_urb+0x105c/0x18d0 drivers/usb/core/urb.c:412, CPU#0: syz.0.17/6000 Modules linked in: CPU: 0 UID: 0 PID: 6000 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:ffffc9000ecf7760 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888032177a00 RCX: 0000000080000280 RDX: ffff8880203d1e80 RSI: ffffffff8c341f40 RDI: ffffffff8faef860 RBP: 1ffff110283df6ec R08: 00000000000000c0 R09: 0000000000000000 R10: ffffc9000ecf7860 R11: fffff52001d9ef18 R12: ffff8881426d1100 R13: ffff888141efb760 R14: 0000000080000280 R15: ffff8880203d1e80 FS: 0000555584472500(0000) GS:ffff888125c25000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30663fff CR3: 00000000762fe000 CR4: 00000000003526f0 Call Trace: 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 ce6230_ctrl_msg+0x2b1/0x660 drivers/media/usb/dvb-usb-v2/ce6230.c:61 ce6230_i2c_master_xfer+0x4ce/0x6d0 drivers/media/usb/dvb-usb-v2/ce6230.c:113 __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: 0033:0x7f10c3b8f749 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:00007ffe182be228 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f10c3de5fa0 RCX: 00007f10c3b8f749 RDX: 0000200000000a40 RSI: 0000000000000707 RDI: 0000000000000004 RBP: 00007f10c3c13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f10c3de5fa0 R14: 00007f10c3de5fa0 R15: 0000000000000003 ---------------- 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 --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.