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: 16241 Comm: syz.0.2643 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:625 [inline] RIP: 0010:__mutex_lock+0x149/0x1550 kernel/locking/mutex.c:821 Code: c0 40 55 9f 9b 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3f 12 00 00 83 3d c5 14 b5 0f 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 cc ad 4e f6 4d 39 64 24 58 0f 85 52 11 00 00 RSP: 0018:ffffc900069d7220 EFLAGS: 00010206 RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9b9f5503 RDX: 0000000000000000 RSI: ffffffff8e6f225b RDI: 00000000000000c0 RBP: ffffc900069d73b8 R08: ffffc900069d7327 R09: 0000000000000000 R10: ffffc900069d7300 R11: fffff52000d3ae65 R12: 0000000000000068 R13: 0000000000000000 R14: 1ffff92000d3ae58 R15: 0000000000000000 FS: 00007fe7ac1f66c0(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33f1bff8 CR3: 0000000055042000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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+0x7bf/0x1fe0 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x1cb/0x2d0 drivers/i2c/i2c-core-base.c:2350 i2c_transfer_buffer_flags+0x10d/0x1a0 drivers/i2c/i2c-core-base.c:2378 i2c_master_send include/linux/i2c.h:109 [inline] i2cdev_write+0x113/0x1e0 drivers/i2c/i2c-dev.c:183 do_loop_readv_writev fs/read_write.c:851 [inline] vfs_writev+0x4bb/0x990 fs/read_write.c:1060 do_writev+0x154/0x2e0 fs/read_write.c:1104 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe7adf9e559 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:00007fe7ac1f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007fe7ae225fa0 RCX: 00007fe7adf9e559 RDX: 0000000000000001 RSI: 0000200000000180 RDI: 0000000000000008 RBP: 00007fe7ae035ab8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe7ae226038 R14: 00007fe7ae225fa0 R15: 00007fe7ae34fa48 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 40 55 9f 9b 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 3f 12 00 00 83 3d c5 14 b5 0f 00 75 22 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <80> 3c 18 00 74 05 e8 cc ad 4e f6 4d 39 64 24 58 0f 85 52 11 00 00 RSP: 0018:ffffc900069d7220 EFLAGS: 00010206 RAX: 0000000000000018 RBX: dffffc0000000000 RCX: ffffffff9b9f5503 RDX: 0000000000000000 RSI: ffffffff8e6f225b RDI: 00000000000000c0 RBP: ffffc900069d73b8 R08: ffffc900069d7327 R09: 0000000000000000 R10: ffffc900069d7300 R11: fffff52000d3ae65 R12: 0000000000000068 R13: 0000000000000000 R14: 1ffff92000d3ae58 R15: 0000000000000000 FS: 00007fe7ac1f66c0(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33f1aff8 CR3: 0000000055042000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: c0 40 55 9f rolb $0x9f,0x55(%rax) 4: 9b fwait 5: 48 c1 e8 03 shr $0x3,%rax 9: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax d: 84 c0 test %al,%al f: 0f 85 3f 12 00 00 jne 0x1254 15: 83 3d c5 14 b5 0f 00 cmpl $0x0,0xfb514c5(%rip) # 0xfb514e1 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 cc ad 4e f6 call 0xf64eae01 35: 4d 39 64 24 58 cmp %r12,0x58(%r12) 3a: 0f 85 52 11 00 00 jne 0x1192