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 0xdffffc0000000018: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x00000000000000c0-0x00000000000000c7] CPU: 1 UID: 0 PID: 24054 Comm: syz.5.5428 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821 Code: c0 80 85 4a 9a 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 35 12 00 00 83 3d f5 86 96 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 fc c3 7f f6 4d 39 64 24 58 0f 85 48 11 00 00 RSP: 0018:ffffc900061b71a0 EFLAGS: 00010206 RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9a4a8503 RDX: 0000000000000000 RSI: 000000000000026f RDI: 00000000000000c0 RBP: ffffc900061b7338 R08: ffffc900061b72a7 R09: 0000000000000000 R10: ffffc900061b7280 R11: fffff52000c36e55 R12: 0000000000000068 R13: 0000000000000000 R14: 1ffff92000c36e48 R15: 0000000000000000 FS: 00007f76948e76c0(0000) GS:ffff88812532d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d619ff8 CR3: 0000000040134000 CR4: 00000000003526f0 DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083 DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: dvb_usbv2_generic_write+0x26/0x60 drivers/media/usb/dvb-usb-v2/dvb_usb_urb.c:77 mxl111sf_ctrl_msg+0x160/0x2f0 drivers/media/usb/dvb-usb-v2/mxl111sf.c:73 mxl111sf_write_reg+0xa9/0x1b0 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+0x463/0x5060 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813 __i2c_transfer+0x7be/0x1fe0 drivers/i2c/i2c-core-base.c:-1 i2c_smbus_xfer_emulated drivers/i2c/i2c-core-smbus.c:471 [inline] __i2c_smbus_xfer+0x1584/0x27d0 drivers/i2c/i2c-core-smbus.c:621 i2c_smbus_xfer+0x1f4/0x310 drivers/i2c/i2c-core-smbus.c:547 i2cdev_ioctl_smbus+0x407/0x700 drivers/i2c/i2c-dev.c:389 i2cdev_ioctl+0x615/0x880 drivers/i2c/i2c-dev.c:478 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+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f769399ce59 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:00007f76948e7028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f7693c15fa0 RCX: 00007f769399ce59 RDX: 0000200000000200 RSI: 0000000000000720 RDI: 0000000000000007 RBP: 00007f7693a32e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7693c16038 R14: 00007f7693c15fa0 R15: 00007f7693d3fa48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821 Code: c0 80 85 4a 9a 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 35 12 00 00 83 3d f5 86 96 0e 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 fc c3 7f f6 4d 39 64 24 58 0f 85 48 11 00 00 RSP: 0018:ffffc900061b71a0 EFLAGS: 00010206 RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9a4a8503 RDX: 0000000000000000 RSI: 000000000000026f RDI: 00000000000000c0 RBP: ffffc900061b7338 R08: ffffc900061b72a7 R09: 0000000000000000 R10: ffffc900061b7280 R11: fffff52000c36e55 R12: 0000000000000068 R13: 0000000000000000 R14: 1ffff92000c36e48 R15: 0000000000000000 FS: 00007f76948e76c0(0000) GS:ffff88812522d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d5fbff8 CR3: 0000000040134000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: c0 80 85 4a 9a 48 c1 rolb $0xc1,0x489a4a85(%rax) 7: e8 03 0f b6 04 call 0x4b60f0f c: 18 84 c0 0f 85 35 12 sbb %al,0x1235850f(%rax,%rax,8) 13: 00 00 add %al,(%rax) 15: 83 3d f5 86 96 0e 00 cmpl $0x0,0xe9686f5(%rip) # 0xe968711 1c: 75 22 jne 0x40 1e: 49 8d 7c 24 58 lea 0x58(%r12),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 74 05 je 0x35 30: e8 fc c3 7f f6 call 0xf67fc431 35: 4d 39 64 24 58 cmp %r12,0x58(%r12) 3a: 0f 85 48 11 00 00 jne 0x1188