cxacru 5-1:1.0: Direct firmware load for cxacru-fw.bin failed with error -2 cxacru 5-1:1.0: Falling back to sysfs fallback for: cxacru-fw.bin ------------[ cut here ]------------ ret WARNING: drivers/base/firmware_loader/fallback.c:148 at fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:148 [inline], CPU#1: cxacru/6066 WARNING: drivers/base/firmware_loader/fallback.c:148 at firmware_fallback_sysfs+0x6d5/0xc20 drivers/base/firmware_loader/fallback.c:238, CPU#1: cxacru/6066 Modules linked in: CPU: 1 UID: 0 PID: 6066 Comm: cxacru Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 RIP: 0010:fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:148 [inline] RIP: 0010:firmware_fallback_sysfs+0x6d5/0xc20 drivers/base/firmware_loader/fallback.c:238 Code: ff ff e9 47 3c de fa e8 99 5a a8 fb e8 24 4e 6c fb 31 ff 89 c3 89 c6 e8 f9 54 a8 fb 85 db 0f 84 0f fb ff ff e8 7c 5a a8 fb 90 <0f> 0b 90 48 8b 3c 24 4c 89 e2 48 c7 c6 a0 ef 71 8c e8 25 0b de fa RSP: 0018:ffffc900051c7ac0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 00000000fffffff5 RCX: ffffffff8661f937 RDX: ffff88801fbc8000 RSI: ffffffff8661f944 RDI: ffff88801fbc8000 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 00000000fffffff5 R11: 0000000000000000 R12: ffffc900051c7cb0 R13: ffff88802f10c040 R14: 0000000000001770 R15: ffff88802f10c050 FS: 0000000000000000(0000) GS:ffff888123ed9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2502e3ad58 CR3: 0000000027bcb000 CR4: 0000000000350ef0 Call Trace: _request_firmware+0xfd7/0x13c0 drivers/base/firmware_loader/main.c:898 request_firmware+0x35/0x50 drivers/base/firmware_loader/main.c:948 cxacru_find_firmware.isra.0+0xc9/0x220 drivers/usb/atm/cxacru.c:994 cxacru_heavy_init+0x194/0x4a0 drivers/usb/atm/cxacru.c:1016 usbatm_do_heavy_init+0x97/0x140 drivers/usb/atm/usbatm.c:963 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245