Kernel panic - not syncing: kernel: panic_on_warn set ... CPU: 0 UID: 0 PID: 5773 Comm: kworker/0:8 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 Workqueue: usb_hub_wq hub_event Call Trace: vpanic+0x56c/0xa60 kernel/panic.c:651 panic+0xc5/0xd0 kernel/panic.c:788 check_panic_on_warn kernel/panic.c:525 [inline] __warn+0x315/0x4c0 kernel/panic.c:1104 __report_bug+0x276/0x570 lib/bug.c:254 report_bug_entry+0x19a/0x290 lib/bug.c:274 handle_bug+0xce/0x200 arch/x86/kernel/traps.c:431 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:490 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:593 RIP: 0010:usb_submit_urb+0x7c/0x18b0 drivers/usb/core/urb.c:379 Code: 4c 89 f0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 e9 41 d3 fa 49 83 3e 00 74 40 e8 be a8 65 fa 48 8d 3d 37 24 04 09 48 89 de <67> 48 0f b9 3a b8 f0 ff ff ff eb 11 e8 a3 a8 65 fa eb 05 e8 9c a8 RSP: 0018:ffffc900042beb80 EFLAGS: 00010283 RAX: ffffffff876169b2 RBX: ffff8880360d4100 RCX: 0000000000100000 RDX: ffffc9001c4de000 RSI: ffff8880360d4100 RDI: ffffffff90658df0 RBP: dffffc0000000000 R08: ffffffff90579d37 R09: 1ffffffff20af3a6 R10: dffffc0000000000 R11: fffffbfff20af3a7 R12: ffff88803a3ddc58 R13: 1ffff1100747bb8b R14: ffff8880360d4108 R15: 0000000000000cc0 port100_send_frame_async drivers/nfc/port100.c:783 [inline] port100_send_cmd_async+0x84f/0xcc0 drivers/nfc/port100.c:879 port100_send_cmd_sync drivers/nfc/port100.c:919 [inline] port100_set_command_type+0x1c8/0x390 drivers/nfc/port100.c:990 port100_probe+0x7b2/0xba0 drivers/nfc/port100.c:1555 usb_probe_interface+0x653/0xc60 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3772 usb_set_configuration+0x1ad8/0x2180 drivers/usb/core/message.c:2268 usb_generic_driver_probe+0x8d/0x150 drivers/usb/core/generic.c:250 usb_probe_device+0x1c3/0x3b0 drivers/usb/core/driver.c:291 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x254/0xae0 drivers/base/dd.c:706 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868 driver_probe_device+0x4f/0x240 drivers/base/dd.c:898 __device_attach_driver+0x270/0x410 drivers/base/dd.c:1026 bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500 __device_attach+0x2c4/0x450 drivers/base/dd.c:1098 device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153 bus_probe_device+0x12a/0x220 drivers/base/bus.c:620 device_add+0x7d7/0xb80 drivers/base/core.c:3772 usb_new_device+0x99d/0x1620 drivers/usb/core/hub.c:2695 hub_port_connect drivers/usb/core/hub.c:5567 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x28e8/0x4d30 drivers/usb/core/hub.c:5953 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 4c 89 f0 mov %r14,%rax 3: 48 c1 e8 03 shr $0x3,%rax 7: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) b: 74 08 je 0x15 d: 4c 89 f7 mov %r14,%rdi 10: e8 e9 41 d3 fa call 0xfad341fe 15: 49 83 3e 00 cmpq $0x0,(%r14) 19: 74 40 je 0x5b 1b: e8 be a8 65 fa call 0xfa65a8de 20: 48 8d 3d 37 24 04 09 lea 0x9042437(%rip),%rdi # 0x904245e 27: 48 89 de mov %rbx,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: b8 f0 ff ff ff mov $0xfffffff0,%eax 34: eb 11 jmp 0x47 36: e8 a3 a8 65 fa call 0xfa65a8de 3b: eb 05 jmp 0x42 3d: e8 .byte 0xe8 3e: 9c pushf 3f: a8 .byte 0xa8