UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf] CPU: 0 UID: 0 PID: 6693 Comm: syz.4.282 Not tainted 6.14.0-syzkaller-12456-gacc4d5ff0b61 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:580 [inline] RIP: 0010:__mutex_lock+0x15d/0x10c0 kernel/locking/mutex.c:746 Code: c0 80 96 73 9a 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 07 0e 00 00 83 3d a0 5a 42 0e 00 75 21 49 8d 7e 60 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 17 3f fc f5 4d 39 76 60 0f 85 81 0d 00 00 RSP: 0018:ffffc90002f3ef20 EFLAGS: 00010202 RAX: 0000000000000019 RBX: ffffc90002f3efe0 RCX: ffffffff9a739603 RDX: ffff888028181e00 RSI: ffffffff8e4fa0ec RDI: 00000000000000c8 RBP: ffffc90002f3f0b8 R08: ffffc90002f3f027 R09: 0000000000000000 R10: ffffc90002f3f000 R11: fffff520005e7e05 R12: 0000000000000000 R13: ffffc90002f3efe8 R14: 0000000000000068 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124f99000(0063) knlGS:00000000f50a6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000080003840 CR3: 00000000352ec000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dvb_usbv2_generic_write+0x26/0x50 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77 mxl111sf_ctrl_msg+0x172/0x2e0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73 mxl111sf_write_reg+0xda/0x1f0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:123 mxl111sf_i2c_start drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:130 [inline] mxl111sf_i2c_sw_xfer_msg drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:-1 [inline] mxl111sf_i2c_xfer+0x923/0x8aa0 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813 __i2c_transfer+0x859/0x2250 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x2c2/0x430 drivers/i2c/i2c-core-base.c:2315 i2cdev_ioctl_rdwr+0x488/0x780 drivers/i2c/i2c-dev.c:306 compat_i2cdev_ioctl+0x7d4/0x8f0 drivers/i2c/i2c-dev.c:575 __do_compat_sys_ioctl fs/ioctl.c:1004 [inline] __se_compat_sys_ioctl+0x50e/0xc30 fs/ioctl.c:947 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f84579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f50a655c EFLAGS: 00000206 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 000000000000000f RCX: 0000000000000707 RDX: 0000000080002580 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:580 [inline] RIP: 0010:__mutex_lock+0x15d/0x10c0 kernel/locking/mutex.c:746 Code: c0 80 96 73 9a 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 07 0e 00 00 83 3d a0 5a 42 0e 00 75 21 49 8d 7e 60 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 17 3f fc f5 4d 39 76 60 0f 85 81 0d 00 00 RSP: 0018:ffffc90002f3ef20 EFLAGS: 00010202 RAX: 0000000000000019 RBX: ffffc90002f3efe0 RCX: ffffffff9a739603 RDX: ffff888028181e00 RSI: ffffffff8e4fa0ec RDI: 00000000000000c8 RBP: ffffc90002f3f0b8 R08: ffffc90002f3f027 R09: 0000000000000000 R10: ffffc90002f3f000 R11: fffff520005e7e05 R12: 0000000000000000 R13: ffffc90002f3efe8 R14: 0000000000000068 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125099000(0063) knlGS:00000000f50a6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000003061dff8 CR3: 00000000352ec000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c0 80 96 73 9a 48 c1 rolb $0xc1,0x489a7396(%rax) 7: e8 03 42 0f b6 call 0xb60f420f c: 04 38 add $0x38,%al e: 84 c0 test %al,%al 10: 0f 85 07 0e 00 00 jne 0xe1d 16: 83 3d a0 5a 42 0e 00 cmpl $0x0,0xe425aa0(%rip) # 0xe425abd 1d: 75 21 jne 0x40 1f: 49 8d 7e 60 lea 0x60(%r14),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 17 3f fc f5 call 0xf5fc3f4d 36: 4d 39 76 60 cmp %r14,0x60(%r14) 3a: 0f 85 81 0d 00 00 jne 0xdc1