rc_core: IR keymap rc-rc6-mce not found Registered IR keymap rc-empty rc rc0: syz0 as /devices/virtual/misc/uhid/0003:04D8:C002.0044/rc/rc0 input: syz0 as /devices/virtual/misc/uhid/0003:04D8:C002.0044/rc/rc0/input110 BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:323 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1214, name: kworker/1:2 preempt_count: 1, expected: 0 RCU nest depth: 0, expected: 0 4 locks held by kworker/1:2/1214: #0: ffff88801b02b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline] #0: ffff88801b02b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405 #1: ffffc900054a7c40 ((work_completion)(&uhid->worker)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline] #1: ffffc900054a7c40 ((work_completion)(&uhid->worker)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405 #2: ffff8880549c5a58 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #2: ffff8880549c5a58 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073 #3: ffff88807c1a7170 (&data->lock){....}-{3:3}, at: picolcd_set_contrast+0x135/0x300 drivers/hid/hid-picolcd_lcd.c:36 irq event stamp: 1342986 hardirqs last enabled at (1342985): [] kasan_quarantine_put+0xbb/0x1f0 mm/kasan/quarantine.c:234 hardirqs last disabled at (1342986): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline] hardirqs last disabled at (1342986): [] _raw_spin_lock_irqsave+0x1a/0x60 kernel/locking/spinlock.c:166 softirqs last enabled at (1342948): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last enabled at (1342948): [] __alloc_skb+0x189/0x7a0 net/core/skbuff.c:697 softirqs last disabled at (1342946): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (1342946): [] __alloc_skb+0x189/0x7a0 net/core/skbuff.c:697 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 UID: 0 PID: 1214 Comm: kworker/1:2 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events uhid_device_add_worker Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 __might_resched+0x378/0x4d0 kernel/sched/core.c:9197 might_alloc include/linux/sched/mm.h:323 [inline] slab_pre_alloc_hook mm/slub.c:4537 [inline] slab_alloc_node mm/slub.c:4897 [inline] __do_kmalloc_node mm/slub.c:5333 [inline] __kmalloc_noprof+0xef/0x720 mm/slub.c:5359 _kmalloc_noprof include/linux/slab.h:992 [inline] _kzalloc_noprof include/linux/slab.h:1309 [inline] hid_alloc_report_buf drivers/hid/hid-core.c:1917 [inline] __hid_request+0xb2/0x490 drivers/hid/hid-core.c:2007 picolcd_set_contrast+0x208/0x300 drivers/hid/hid-picolcd_lcd.c:39 picolcd_init_lcd+0x1f9/0x2f0 drivers/hid/hid-picolcd_lcd.c:70 picolcd_probe_lcd drivers/hid/hid-picolcd_core.c:477 [inline] picolcd_probe+0xbb1/0x16c0 drivers/hid/hid-picolcd_core.c:580 __hid_device_probe drivers/hid/hid-core.c:2829 [inline] hid_device_probe+0x42c/0x7c0 drivers/hid/hid-core.c:2866 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 hid_add_device+0x272/0x3e0 drivers/hid/hid-core.c:3010 uhid_device_add_worker+0x43/0xf0 drivers/hid/uhid.c:73 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 ============================= [ BUG: Invalid wait context ] syzkaller #0 Tainted: G W L ----------------------------- kworker/1:2/1214 is trying to lock: ffff88805400d3c0 (&uhid->report_lock){....}-{4:4}, at: uhid_hid_set_report drivers/hid/uhid.c:295 [inline] ffff88805400d3c0 (&uhid->report_lock){....}-{4:4}, at: uhid_hid_raw_request+0x1af/0x6a0 drivers/hid/uhid.c:340 other info that might help us debug this: context-{5:5} 4 locks held by kworker/1:2/1214: #0: ffff88801b02b140 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline] #0: ffff88801b02b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405 #1: ffffc900054a7c40 ((work_completion)(&uhid->worker)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline] #1: ffffc900054a7c40 ((work_completion)(&uhid->worker)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405 #2: ffff8880549c5a58 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1104 [inline] #2: ffff8880549c5a58 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073 #3: ffff88807c1a7170 (&data->lock){....}-{3:3}, at: picolcd_set_contrast+0x135/0x300 drivers/hid/hid-picolcd_lcd.c:36 stack backtrace: CPU: 1 UID: 0 PID: 1214 Comm: kworker/1:2 Tainted: G W L syzkaller #0 PREEMPT(full) Tainted: [W]=WARN, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events uhid_device_add_worker Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_lock_invalid_wait_context kernel/locking/lockdep.c:4830 [inline] check_wait_context kernel/locking/lockdep.c:4902 [inline] __lock_acquire+0xe39/0x2cf0 kernel/locking/lockdep.c:5187 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868 __mutex_lock_common kernel/locking/mutex.c:646 [inline] __mutex_lock+0x19d/0x1550 kernel/locking/mutex.c:821 uhid_hid_set_report drivers/hid/uhid.c:295 [inline] uhid_hid_raw_request+0x1af/0x6a0 drivers/hid/uhid.c:340 __hid_hw_raw_request drivers/hid/hid-core.c:2547 [inline] hid_hw_raw_request drivers/hid/hid-core.c:2569 [inline] __hid_request+0x269/0x490 drivers/hid/hid-core.c:2023 picolcd_set_contrast+0x208/0x300 drivers/hid/hid-picolcd_lcd.c:39 picolcd_init_lcd+0x1f9/0x2f0 drivers/hid/hid-picolcd_lcd.c:70 picolcd_probe_lcd drivers/hid/hid-picolcd_core.c:477 [inline] picolcd_probe+0xbb1/0x16c0 drivers/hid/hid-picolcd_core.c:580 __hid_device_probe drivers/hid/hid-core.c:2829 [inline] hid_device_probe+0x42c/0x7c0 drivers/hid/hid-core.c:2866 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 hid_add_device+0x272/0x3e0 drivers/hid/hid-core.c:3010 uhid_device_add_worker+0x43/0xf0 drivers/hid/uhid.c:73 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 BUG: scheduling while atomic: kworker/1:2/1214/0x00000002 INFO: lockdep is turned off. Modules linked in: irq event stamp: 1342986 hardirqs last enabled at (1342985): [] kasan_quarantine_put+0xbb/0x1f0 mm/kasan/quarantine.c:234 hardirqs last disabled at (1342986): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline] hardirqs last disabled at (1342986): [] _raw_spin_lock_irqsave+0x1a/0x60 kernel/locking/spinlock.c:166 softirqs last enabled at (1342948): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last enabled at (1342948): [] __alloc_skb+0x189/0x7a0 net/core/skbuff.c:697 softirqs last disabled at (1342946): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (1342946): [] __alloc_skb+0x189/0x7a0 net/core/skbuff.c:697 Preemption disabled at: [<0000000000000000>] 0x0