do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdbd0325697 ================================ WARNING: inconsistent lock state 5.19.0-syzkaller-02972-g200e340f2196 #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. udevd/3841 [HC0[0]:SC1[1]:HE0:SE0] takes: ffffffff8beb59b8 (vmap_area_lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] ffffffff8beb59b8 (vmap_area_lock){+.?.}-{2:2}, at: find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] alloc_vmap_area+0xa49/0x1f00 mm/vmalloc.c:1586 __get_vm_area_node+0x142/0x3f0 mm/vmalloc.c:2453 __vmalloc_node_range+0x250/0x13e0 mm/vmalloc.c:3125 __vmalloc_node mm/vmalloc.c:3230 [inline] __vmalloc+0x69/0x80 mm/vmalloc.c:3244 pcpu_mem_zalloc mm/percpu.c:516 [inline] pcpu_mem_zalloc+0x51/0xa0 mm/percpu.c:508 pcpu_alloc_chunk mm/percpu.c:1454 [inline] pcpu_create_chunk+0xd7/0x930 mm/percpu-vm.c:338 pcpu_alloc+0x1012/0x13d0 mm/percpu.c:1834 alloc_kmem_cache_cpus.constprop.0+0x29/0xc0 mm/slab.c:1729 do_tune_cpucache+0x37/0x230 mm/slab.c:3844 enable_cpucache+0x3c/0xa0 mm/slab.c:3938 kmem_cache_init_late+0x33/0x66 mm/slab.c:1276 start_kernel+0x2f5/0x48f init/main.c:1059 secondary_startup_64_no_verify+0xce/0xdb irq event stamp: 31365 hardirqs last enabled at (31364): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (31364): [] _raw_spin_unlock_irq+0x1f/0x40 kernel/locking/spinlock.c:202 hardirqs last disabled at (31365): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (31365): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:162 softirqs last enabled at (25834): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last enabled at (25834): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 softirqs last disabled at (31357): [] invoke_softirq kernel/softirq.c:445 [inline] softirqs last disabled at (31357): [] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(vmap_area_lock); lock(vmap_area_lock); *** DEADLOCK *** 7 locks held by udevd/3841: #0: ffff88802b8c53a8 (kn->active#66){.+.+}-{0:0}, at: kernfs_fop_open+0xa8/0xda0 fs/kernfs/file.c:599 #1: ffffffff8bee0588 (remove_cache_srcu){....}-{0:0}, at: kasan_quarantine_reduce+0x41/0x200 mm/kasan/quarantine.c:296 #2: ffffc90000748d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: lockdep_copy_map include/linux/lockdep.h:31 [inline] #2: ffffc90000748d70 ((&dum_hcd->timer)){+.-.}-{0:0}, at: call_timer_fn+0xd5/0x6b0 kernel/time/timer.c:1464 #3: ffff88801c2a0230 (&dev->event_lock#2){-.-.}-{2:2}, at: input_event drivers/input/input.c:456 [inline] #3: ffff88801c2a0230 (&dev->event_lock#2){-.-.}-{2:2}, at: input_event+0x7b/0xb0 drivers/input/input.c:449 #4: ffffffff8bd848c0 (rcu_read_lock){....}-{1:2}, at: input_pass_values.part.0+0x0/0x710 drivers/input/input.c:884 #5: ffffffff8c7ffb38 (kbd_event_lock){..-.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline] #5: ffffffff8c7ffb38 (kbd_event_lock){..-.}-{2:2}, at: kbd_event+0x86/0x1780 drivers/tty/vt/keyboard.c:1537 #6: ffffffff8bd848c0 (rcu_read_lock){....}-{1:2}, at: show_state_filter+0x0/0x300 kernel/sched/core.c:8828 stack backtrace: CPU: 1 PID: 3841 Comm: udevd Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_usage_bug kernel/locking/lockdep.c:3961 [inline] valid_state kernel/locking/lockdep.c:3973 [inline] mark_lock_irq kernel/locking/lockdep.c:4176 [inline] mark_lock.part.0.cold+0x18/0xd8 kernel/locking/lockdep.c:4632 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4527 [inline] __lock_acquire+0x11e7/0x5660 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5666 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5631 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] find_vmap_area+0x1c/0x130 mm/vmalloc.c:1805 check_heap_object mm/usercopy.c:176 [inline] __check_object_size mm/usercopy.c:250 [inline] __check_object_size+0x1f8/0x700 mm/usercopy.c:212 check_object_size include/linux/thread_info.h:199 [inline] __copy_from_user_inatomic include/linux/uaccess.h:62 [inline] copy_from_user_nmi arch/x86/lib/usercopy.c:47 [inline] copy_from_user_nmi+0xcb/0x130 arch/x86/lib/usercopy.c:31 copy_code arch/x86/kernel/dumpstack.c:91 [inline] show_opcodes+0x59/0xb0 arch/x86/kernel/dumpstack.c:121 show_iret_regs+0xd/0x33 arch/x86/kernel/dumpstack.c:149 __show_regs+0x1e/0x60 arch/x86/kernel/process_64.c:74 show_trace_log_lvl+0x25b/0x2ba arch/x86/kernel/dumpstack.c:292 sched_show_task kernel/sched/core.c:8866 [inline] sched_show_task+0x44c/0x5c0 kernel/sched/core.c:8840 show_state_filter+0x13e/0x300 kernel/sched/core.c:8911 k_spec drivers/tty/vt/keyboard.c:667 [inline] k_spec+0xe1/0x130 drivers/tty/vt/keyboard.c:656 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline] kbd_event+0xcdd/0x1780 drivers/tty/vt/keyboard.c:1543 input_to_handler+0x3b9/0x4c0 drivers/input/input.c:129 input_pass_values.part.0+0x230/0x710 drivers/input/input.c:156 input_pass_values drivers/input/input.c:145 [inline] input_handle_event+0x373/0x1440 drivers/input/input.c:415 input_event drivers/input/input.c:457 [inline] input_event+0x8e/0xb0 drivers/input/input.c:449 input_sync include/linux/input.h:450 [inline] hidinput_report_event+0xae/0x100 drivers/hid/hid-input.c:1648 hid_report_raw_event+0x3e6/0x1280 drivers/hid/hid-core.c:2005 hid_input_report+0x360/0x4c0 drivers/hid/hid-core.c:2065 hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1747 dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x679/0xa80 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x29b/0x9c2 kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:qlist_free_all+0x6c/0x1b0 mm/kasan/quarantine.c:182 Code: 00 fc ff df c6 04 08 fb e8 21 74 ff ff 48 85 db 0f 85 98 00 00 00 9c 58 f6 c4 02 0f 85 0b 01 00 00 48 85 db 74 01 fb 48 85 ed <0f> 84 d2 00 00 00 48 89 eb 4d 85 e4 4d 89 e7 74 7d 49 63 87 80 00 RSP: 0018:ffffc900035c7900 EFLAGS: 00000286 RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff20daaa6 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888022ef4c00 R08: 0000000000000001 R09: ffffffff9068ca07 R10: 0000000000000001 R11: 1ffffd40002597a2 R12: 0000000000000000 R13: ffff88804a2ee000 R14: ffff88804a2ee000 R15: ffff888011840900 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x97/0xb0 mm/kasan/common.c:447 kasan_slab_alloc include/linux/kasan.h:224 [inline] slab_post_alloc_hook mm/slab.h:727 [inline] slab_alloc mm/slab.c:3302 [inline] kmem_cache_alloc_trace+0x262/0x4b0 mm/slab.c:3567 kmalloc include/linux/slab.h:600 [inline] kzalloc include/linux/slab.h:733 [inline] kernfs_fop_open+0x317/0xda0 fs/kernfs/file.c:621 do_dentry_open+0x4a1/0x12d0 fs/open.c:878 do_open fs/namei.c:3499 [inline] path_openat+0x1c92/0x28f0 fs/namei.c:3632 do_filp_open+0x1b6/0x400 fs/namei.c:3659 do_sys_openat2+0x16d/0x4c0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdbd0325697 Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f RSP: 002b:00007ffdb5fb1b40 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055af1848e840 RCX: 00007fdbd0325697 RDX: 0000000000080000 RSI: 00007ffdb5fb1c58 RDI: 00000000ffffff9c RBP: 00007ffdb5fb1c58 R08: 000055af17061e73 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055af1848e930 R14: 00007ffdb5fb1c58 R15: 000055af1848fb00 Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f RSP: 002b:00007ffdb5fb1b40 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055af1848e840 RCX: 00007fdbd0325697 RDX: 0000000000080000 RSI: 00007ffdb5fb1c58 RDI: 00000000ffffff9c RBP: 00007ffdb5fb1c58 R08: 000055af17061e73 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 000055af1848e930 R14: 00007ffdb5fb1c58 R15: 000055af1848fb00 task:udevd state:S stack:27296 pid: 3842 ppid: 3133 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5178 [inline] __schedule+0xa00/0x4c10 kernel/sched/core.c:6490 schedule+0xda/0x1b0 kernel/sched/core.c:6566 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1856 [inline] do_epoll_wait+0x1290/0x1930 fs/eventpoll.c:2234 __do_sys_epoll_wait fs/eventpoll.c:2246 [inline] __se_sys_epoll_wait fs/eventpoll.c:2241 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2241 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fdbd0333e46 RSP: 002b:00007ffdb5fb8b38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdbd0333e46 RDX: 0000000000000004 RSI: 00007ffdb5fb8b78 RDI: 0000000000000004 RBP: 000055af1848e840 R08: 0000000000000007 R09: 000055af1846ea60 R10: 00000000ffffffff R11: 0000000000000246 R12: 000055af184c6980 R13: 00007ffdb5fb8b78 R14: 0000000000000008 R15: 000055af1845f2c0 INFO: lockdep is turned off. keytouch 0003:0926:3333.0002: can't resubmit intr, dummy_hcd.2-1/input0, status -19 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: df c6 ffreep %st(6) 2: 04 08 add $0x8,%al 4: fb sti 5: e8 21 74 ff ff callq 0xffff742b a: 48 85 db test %rbx,%rbx d: 0f 85 98 00 00 00 jne 0xab 13: 9c pushfq 14: 58 pop %rax 15: f6 c4 02 test $0x2,%ah 18: 0f 85 0b 01 00 00 jne 0x129 1e: 48 85 db test %rbx,%rbx 21: 74 01 je 0x24 23: fb sti 24: 48 85 ed test %rbp,%rbp * 27: 0f 84 d2 00 00 00 je 0xff <-- trapping instruction 2d: 48 89 eb mov %rbp,%rbx 30: 4d 85 e4 test %r12,%r12 33: 4d 89 e7 mov %r12,%r15 36: 74 7d je 0xb5 38: 49 rex.WB 39: 63 .byte 0x63 3a: 87 .byte 0x87 3b: 80 .byte 0x80