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: 5953 Comm: syz.1.55 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x14e/0x1550 kernel/locking/mutex.c:820 Code: e0 13 44 9a 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 40 12 00 00 83 3d b0 e9 9a 0e 00 75 23 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 56 b4 87 f6 4d 39 64 24 58 0f 85 6c 11 00 RSP: 0018:ffffc90004bc7260 EFLAGS: 00010206 RAX: 0000000000000018 RBX: 0000000000000000 RCX: ffffffff9a441303 RDX: 0000000000000000 RSI: ffffffff8e216b62 RDI: 00000000000000c0 RBP: ffffc90004bc7418 R08: ffffc90004bc7387 R09: 0000000000000000 R10: ffffc90004bc7360 R11: fffff52000978e71 R12: 0000000000000068 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000978e64 FS: 00007fbba5f0c6c0(0000) GS:ffff888125395000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b34063fff CR3: 000000005a0f8000 CR4: 00000000003526f0 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+0x496/0x5100 drivers/media/usb/dvb-usb-v2/mxl111sf-i2c.c:813 __i2c_transfer+0x79a/0x1f70 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x1cc/0x2d0 drivers/i2c/i2c-core-base.c:2317 i2c_transfer_buffer_flags+0x10d/0x1a0 drivers/i2c/i2c-core-base.c:2345 i2c_master_send include/linux/i2c.h:109 [inline] i2cdev_write+0x113/0x1e0 drivers/i2c/i2c-dev.c:183 vfs_write+0x29a/0xb90 fs/read_write.c:686 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbba4f9cdd9 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:00007fbba5f0c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbba5215fa0 RCX: 00007fbba4f9cdd9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 RBP: 00007fbba5032d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbba5216038 R14: 00007fbba5215fa0 R15: 00007fbba533fa48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x14e/0x1550 kernel/locking/mutex.c:820 Code: e0 13 44 9a 48 c1 e8 03 42 0f b6 04 30 84 c0 0f 85 40 12 00 00 83 3d b0 e9 9a 0e 00 75 23 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 56 b4 87 f6 4d 39 64 24 58 0f 85 6c 11 00 RSP: 0018:ffffc90004bc7260 EFLAGS: 00010206 RAX: 0000000000000018 RBX: 0000000000000000 RCX: ffffffff9a441303 RDX: 0000000000000000 RSI: ffffffff8e216b62 RDI: 00000000000000c0 RBP: ffffc90004bc7418 R08: ffffc90004bc7387 R09: 0000000000000000 R10: ffffc90004bc7360 R11: fffff52000978e71 R12: 0000000000000068 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000978e64 FS: 00007fbba5f0c6c0(0000) GS:ffff888125295000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c391a04 CR3: 000000005a0f8000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: e0 13 loopne 0x15 2: 44 9a rex.R (bad) 4: 48 c1 e8 03 shr $0x3,%rax 8: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax d: 84 c0 test %al,%al f: 0f 85 40 12 00 00 jne 0x1255 15: 83 3d b0 e9 9a 0e 00 cmpl $0x0,0xe9ae9b0(%rip) # 0xe9ae9cc 1c: 75 23 jne 0x41 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: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 56 b4 87 f6 call 0xf687b48c 36: 4d 39 64 24 58 cmp %r12,0x58(%r12) 3b: 0f .byte 0xf 3c: 85 6c 11 00 test %ebp,0x0(%rcx,%rdx,1)