================================ WARNING: inconsistent lock state syzkaller #0 Tainted: G L -------------------------------- inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. syz.2.3664/16707 [HC0[0]:SC0[0]:HE1:SE1] takes: ffff888079879868 (&ccp->wait_input_report_lock){+.?.}-{3:3}, at: spin_lock include/linux/spinlock.h:347 [inline] ffff888079879868 (&ccp->wait_input_report_lock){+.?.}-{3:3}, at: ccp_raw_event+0x59/0x130 drivers/hwmon/corsair-cpro.c:161 {IN-SOFTIRQ-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5942 [inline] lock_acquire+0x1d1/0x380 kernel/locking/lockdep.c:5899 __raw_spin_lock include/linux/spinlock_api_smp.h:190 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:173 spin_lock include/linux/spinlock.h:347 [inline] ccp_raw_event+0x59/0x130 drivers/hwmon/corsair-cpro.c:161 __hid_input_report.constprop.0+0x319/0x470 drivers/hid/hid-core.c:2175 hid_irq_in+0x55d/0x710 drivers/hid/usbhid/hid-core.c:287 __usb_hcd_giveback_urb+0x38e/0x610 drivers/usb/core/hcd.c:1657 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741 dummy_timer+0xdaf/0x3820 drivers/usb/gadget/udc/dummy_hcd.c:2023 __run_hrtimer kernel/time/hrtimer.c:2074 [inline] __hrtimer_run_queues+0x462/0x9c0 kernel/time/hrtimer.c:2131 hrtimer_run_softirq+0x1ca/0x360 kernel/time/hrtimer.c:2148 handle_softirqs+0x1e6/0x9d0 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0x16a/0x210 kernel/softirq.c:758 irq_exit_rcu+0x9/0x30 kernel/softirq.c:775 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 check_preemption_disabled+0x21/0xe0 lib/smp_processor_id.c:54 rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x13/0xc0 kernel/rcu/tree.c:753 trace_lock_release include/trace/events/lock.h:68 [inline] lock_release+0x24d/0x310 kernel/locking/lockdep.c:5954 rcu_lock_release include/linux/rcupdate.h:319 [inline] rcu_read_unlock include/linux/rcupdate.h:880 [inline] class_rcu_destructor include/linux/rcupdate.h:1216 [inline] unwind_next_frame+0x3c3/0x2090 arch/x86/kernel/unwind_orc.c:495 arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 unpoison_slab_object mm/kasan/common.c:351 [inline] __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:377 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4683 [inline] kmem_cache_alloc_from_sheaf_noprof+0xab/0x1c0 mm/slub.c:5325 mas_pop_node lib/maple_tree.c:1062 [inline] dst_setup+0x339/0x950 lib/maple_tree.c:2418 mas_wr_split+0xa70/0x35a0 lib/maple_tree.c:3535 mas_wr_store_entry+0xcea/0x1d50 lib/maple_tree.c:3612 mas_store_prealloc+0x6e7/0x10a0 lib/maple_tree.c:5031 vma_iter_store_new mm/vma.h:711 [inline] __mmap_new_vma mm/vma.c:2695 [inline] __mmap_region+0x193f/0x32e0 mm/vma.c:2889 mmap_region+0x3db/0x6d0 mm/vma.c:2974 do_mmap+0x12c7/0x1c30 mm/mmap.c:573 vm_mmap_pgoff+0x28d/0x470 mm/util.c:581 ksys_mmap_pgoff+0x3cb/0x610 mm/mmap.c:619 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:96 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:89 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f irq event stamp: 45 hardirqs last enabled at (45): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:210 [inline] hardirqs last enabled at (45): [] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:221 hardirqs last disabled at (44): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:153 [inline] hardirqs last disabled at (44): [] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:181 softirqs last enabled at (0): [] copy_process+0x29b5/0x8380 kernel/fork.c:2261 softirqs last disabled at (0): [<0000000000000000>] 0x0 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 *** locks held by syz.2.3664/16707: 1, last CPU#0: #0: ffff8880354b8060 (&uhid->devlock){+.+.}-{4:4}, at: uhid_char_write+0x6b/0x10e0 drivers/hid/uhid.c:731 stack backtrace: CPU: 0 UID: 0 PID: 16707 Comm: syz.2.3664 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_usage_bug.part.0+0x258/0x340 kernel/locking/lockdep.c:4086 print_usage_bug kernel/locking/lockdep.c:4054 [inline] valid_state kernel/locking/lockdep.c:4100 [inline] mark_lock_irq kernel/locking/lockdep.c:4311 [inline] mark_lock+0x956/0x1020 kernel/locking/lockdep.c:4797 mark_usage kernel/locking/lockdep.c:4710 [inline] __lock_acquire+0x8e2/0x1f40 kernel/locking/lockdep.c:5242 lock_acquire kernel/locking/lockdep.c:5942 [inline] lock_acquire+0x1d1/0x380 kernel/locking/lockdep.c:5899 __raw_spin_lock include/linux/spinlock_api_smp.h:190 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:173 spin_lock include/linux/spinlock.h:347 [inline] ccp_raw_event+0x59/0x130 drivers/hwmon/corsair-cpro.c:161 __hid_input_report.constprop.0+0x319/0x470 drivers/hid/hid-core.c:2175 uhid_dev_input2 drivers/hid/uhid.c:609 [inline] uhid_char_write+0xb6b/0x10e0 drivers/hid/uhid.c:767 vfs_write+0x2aa/0x1050 fs/read_write.c:685 ksys_write+0x1f8/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ffa0a99e1d9 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:00007ffa0b8c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007ffa0ac26090 RCX: 00007ffa0a99e1d9 RDX: 000000000000000e RSI: 0000200000000500 RDI: 0000000000000003 RBP: 00007ffa0aa35888 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffa0ac26128 R14: 00007ffa0ac26090 R15: 00007ffef2377e08