================================ WARNING: inconsistent lock state syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. swapper/1/0 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff88805ff97850 (&ccp->wait_input_report_lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:364 [inline] ffff88805ff97850 (&ccp->wait_input_report_lock){+.?.}-{2:2}, at: ccp_raw_event+0x4c/0xf0 drivers/hwmon/corsair-cpro.c:154 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:364 [inline] ccp_raw_event+0x4c/0xf0 drivers/hwmon/corsair-cpro.c:154 hid_input_report+0x3fe/0x4f0 drivers/hid/hid-core.c:1916 uhid_dev_input2+0xb1/0x130 drivers/hid/uhid.c:611 uhid_char_write+0x376/0xaf0 drivers/hid/uhid.c:769 vfs_write+0x304/0xd70 fs/read_write.c:592 ksys_write+0x153/0x260 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 irq event stamp: 1485287 hardirqs last enabled at (1485286): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (1485286): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (1485287): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (1485287): [] _raw_spin_lock_irqsave+0x8b/0x100 kernel/locking/spinlock.c:162 softirqs last enabled at (1485262): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last enabled at (1485262): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last enabled at (1485262): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 softirqs last disabled at (1485275): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (1485275): [] invoke_softirq kernel/softirq.c:450 [inline] softirqs last disabled at (1485275): [] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ccp->wait_input_report_lock); lock(&ccp->wait_input_report_lock); *** DEADLOCK *** 1 lock held by swapper/1/0: #0: ffffc90000dd0bc0 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:45 [inline] #0: ffffc90000dd0bc0 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xca/0x540 kernel/time/timer.c:1638 stack backtrace: CPU: 1 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 valid_state+0x13b/0x1d0 kernel/locking/lockdep.c:3999 mark_lock_irq+0xa9/0x900 kernel/locking/lockdep.c:4202 mark_lock+0x208/0x320 kernel/locking/lockdep.c:4664 mark_usage kernel/locking/lockdep.c:-1 [inline] __lock_acquire+0xd77/0x7d40 kernel/locking/lockdep.c:5074 lock_acquire+0x19f/0x400 kernel/locking/lockdep.c:5737 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:364 [inline] ccp_raw_event+0x4c/0xf0 drivers/hwmon/corsair-cpro.c:154 hid_input_report+0x3fe/0x4f0 drivers/hid/hid-core.c:1916 hid_irq_in+0x434/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x35d/0x520 drivers/usb/core/hcd.c:1674 dummy_timer+0xa47/0x34a0 drivers/usb/gadget/udc/dummy_hcd.c:2012 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648 expire_timers kernel/time/timer.c:1699 [inline] __run_timers+0x56c/0x810 kernel/time/timer.c:1970 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983 handle_softirqs+0x336/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:default_idle+0xb/0x10 arch/x86/kernel/process.c:730 Code: b7 48 89 df e8 c6 fc f2 f7 eb ad e8 af aa f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 66 90 0f 00 2d 37 62 5a 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 RSP: 0018:ffffc90000d67d48 EFLAGS: 000002c2 RAX: d5c4f85234b68700 RBX: ffff888016e98000 RCX: d5c4f85234b68700 RDX: 0000000000000001 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4b80 RBP: ffffc90000d67e80 R08: ffff8880b913b30b R09: 1ffff11017227661 R10: dffffc0000000000 R11: ffffed1017227662 R12: 1ffff920001acfb4 R13: dffffc0000000000 R14: 1ffff11002dd3000 R15: 0000000000000000 default_idle_call+0x81/0xc0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:202 [inline] do_idle+0x3a1/0x650 kernel/sched/idle.c:326 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:424 start_secondary+0x32f/0x430 arch/x86/kernel/smpboot.c:281 secondary_startup_64_no_verify+0xb1/0xbb GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog ---------------- Code disassembly (best guess): 0: b7 48 mov $0x48,%bh 2: 89 df mov %ebx,%edi 4: e8 c6 fc f2 f7 call 0xf7f2fccf 9: eb ad jmp 0xffffffb8 b: e8 af aa f6 ff call 0xfff6aabf 10: 00 00 add %al,(%rax) 12: cc int3 13: cc int3 14: 00 00 add %al,(%rax) 16: cc int3 17: cc int3 18: 00 00 add %al,(%rax) 1a: cc int3 1b: cc int3 1c: 00 00 add %al,(%rax) 1e: cc int3 1f: 66 90 xchg %ax,%ax 21: 0f 00 2d 37 62 5a 00 verw 0x5a6237(%rip) # 0x5a625f 28: fb sti 29: f4 hlt * 2a: c3 ret <-- trapping instruction 2b: 0f 1f 40 00 nopl 0x0(%rax) 2f: 41 57 push %r15 31: 41 56 push %r14 33: 53 push %rbx 34: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 3b: fc ff df 3e: 65 gs 3f: 48 rex.W