task:kworker/0:0     state:R  running task     stack:0     pid:3335  tgid:3335  ppid:2      flags:0x00000008
Workqueue: usb_hub_wq hub_event
Call Trace:
[<ffffffff83737e14>] context_switch kernel/sched/core.c:5376 [inline]
[<ffffffff83737e14>] __schedule+0x760/0x1824 kernel/sched/core.c:6688
==================================================================
BUG: KASAN: stack-out-of-bounds in walk_stackframe+0x120/0x2f2 arch/riscv/kernel/stacktrace.c:58
Read of size 8 at addr ff20000007c234d0 by task kworker/1:5/3683

CPU: 1 PID: 3683 Comm: kworker/1:5 Not tainted 6.7.0-rc1-syzkaller-g3b5c14361d61 #0
Hardware name: riscv-virtio,qemu (DT)
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
Call Trace:
[<ffffffff8000c1e6>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:121
[<ffffffff836ee406>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:127
[<ffffffff8372f66a>] __dump_stack lib/dump_stack.c:88 [inline]
[<ffffffff8372f66a>] dump_stack_lvl+0xe8/0x154 lib/dump_stack.c:106
[<ffffffff836f6ccc>] print_address_description mm/kasan/report.c:364 [inline]
[<ffffffff836f6ccc>] print_report+0x1e4/0x4f4 mm/kasan/report.c:475
[<ffffffff8059650a>] kasan_report+0xf0/0x1b8 mm/kasan/report.c:588
[<ffffffff805979a4>] check_region_inline mm/kasan/generic.c:181 [inline]
[<ffffffff805979a4>] __asan_load8+0x80/0xa8 mm/kasan/generic.c:260
[<ffffffff8000bf82>] walk_stackframe+0x120/0x2f2 arch/riscv/kernel/stacktrace.c:58
[<ffffffff8000c1e6>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:121
[<ffffffff836ee406>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:127
[<ffffffff800fd4c4>] sched_show_task kernel/sched/core.c:9146 [inline]
[<ffffffff800fd4c4>] sched_show_task+0x310/0x426 kernel/sched/core.c:9120
[<ffffffff8010803c>] show_state_filter+0xa0/0x1e0 kernel/sched/core.c:9191
[<ffffffff8105f95e>] show_state include/linux/sched/debug.h:21 [inline]
[<ffffffff8105f95e>] fn_show_state+0x1a/0x22 drivers/tty/vt/keyboard.c:614
[<ffffffff8105fe32>] k_spec drivers/tty/vt/keyboard.c:667 [inline]
[<ffffffff8105fe32>] k_spec+0xce/0x102 drivers/tty/vt/keyboard.c:656
[<ffffffff81061d4c>] kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline]
[<ffffffff81061d4c>] kbd_event+0x5fa/0xa5e drivers/tty/vt/keyboard.c:1543
[<ffffffff8223a00a>] input_to_handler+0x246/0x24c drivers/input/input.c:132
[<ffffffff8223eee4>] input_pass_values+0x410/0x5fe drivers/input/input.c:161
[<ffffffff8223f2c0>] input_event_dispose+0x1ee/0x2c8 drivers/input/input.c:378
[<ffffffff8224112c>] input_handle_event+0xf0/0x972 drivers/input/input.c:406
[<ffffffff82241a38>] input_event drivers/input/input.c:435 [inline]
[<ffffffff82241a38>] input_event+0x8a/0xb2 drivers/input/input.c:427
[<ffffffff8278230c>] input_sync include/linux/input.h:450 [inline]
[<ffffffff8278230c>] hidinput_report_event+0x86/0xae drivers/hid/hid-input.c:1748
[<ffffffff8277c108>] hid_report_raw_event+0x1be/0xa5c drivers/hid/hid-core.c:2016
[<ffffffff8277cbf4>] hid_input_report+0x24e/0x2f4 drivers/hid/hid-core.c:2083
[<ffffffff82842074>] hid_irq_in+0x244/0x412 drivers/hid/usbhid/hid-core.c:284
[<ffffffff81e6625a>] __usb_hcd_giveback_urb+0x222/0x364 drivers/usb/core/hcd.c:1650
[<ffffffff81e66616>] usb_hcd_giveback_urb+0x27a/0x290 drivers/usb/core/hcd.c:1733
[<ffffffff82124e24>] dummy_timer+0xfc2/0x204a drivers/usb/gadget/udc/dummy_hcd.c:1987
[<ffffffff801d92ce>] call_timer_fn+0x15a/0x4f2 kernel/time/timer.c:1700
[<ffffffff801d9be4>] expire_timers kernel/time/timer.c:1751 [inline]
[<ffffffff801d9be4>] __run_timers+0x57e/0x73c kernel/time/timer.c:2022
[<ffffffff801d9de8>] run_timer_softirq+0x46/0x80 kernel/time/timer.c:2035
[<ffffffff837460c8>] __do_softirq+0x2f4/0x89e kernel/softirq.c:553
[<ffffffff800912e0>] invoke_softirq kernel/softirq.c:427 [inline]
[<ffffffff800912e0>] __irq_exit_rcu kernel/softirq.c:632 [inline]
[<ffffffff800912e0>] irq_exit_rcu+0x13c/0x1e4 kernel/softirq.c:644
[<ffffffff837304b6>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:363
[<ffffffff83745d4a>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:250

The buggy address belongs to the virtual mapping at
 [ff20000007c20000, ff20000007c25000) created by:
 kernel_clone+0x118/0x896 kernel/fork.c:2907

The buggy address belongs to the physical page:
page:ff1c000002493940 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x924e5
flags: 0xffe000000000000(node=0|zone=0|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 0ffe000000000000 0000000000000000 0000000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2dc2(GFP_KERNEL|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_ZERO), pid 2, tgid 2 (kthreadd), ts 1218681783500, free_ts 1211460949100
 __set_page_owner+0x32/0x18a mm/page_owner.c:192
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x8c/0xe2 mm/page_alloc.c:1537
 prep_new_page mm/page_alloc.c:1544 [inline]
 get_page_from_freelist+0x5ae/0x13b8 mm/page_alloc.c:3312
 __alloc_pages+0x1aa/0x13a0 mm/page_alloc.c:4568
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 vm_area_alloc_pages mm/vmalloc.c:3065 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0x50e/0xec2 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1118 [inline]
 copy_process+0x2272/0x3fba kernel/fork.c:2332
 kernel_clone+0x118/0x896 kernel/fork.c:2907
 kernel_thread+0xf4/0x126 kernel/fork.c:2969
 create_kthread kernel/kthread.c:411 [inline]
 kthreadd+0x33e/0x482 kernel/kthread.c:764
 ret_from_fork+0xe/0x1c arch/riscv/kernel/entry.S:221
page last free stack trace:
 __reset_page_owner+0x4c/0xf8 mm/page_owner.c:149
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1137 [inline]
 free_unref_page_prepare+0x24c/0x5a6 mm/page_alloc.c:2347
 free_unref_page+0x5c/0x236 mm/page_alloc.c:2487
 free_the_page mm/page_alloc.c:563 [inline]
 __free_pages+0x104/0x126 mm/page_alloc.c:4654
 __free_slab+0xbc/0x112 mm/slub.c:2087
 free_slab+0x38/0x190 mm/slub.c:2110
 discard_slab mm/slub.c:2116 [inline]
 __unfreeze_partials+0x1c0/0x1f8 mm/slub.c:2655
 put_cpu_partial+0x158/0x220 mm/slub.c:2731
 __slab_free+0x20c/0x2de mm/slub.c:3679
 do_slab_free mm/slub.c:3757 [inline]
 ___cache_free+0x134/0x152 mm/slub.c:3816
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x7a/0x16c mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x158/0x1ba mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x5e/0x84 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook mm/slab.h:763 [inline]
 slab_alloc_node mm/slub.c:3478 [inline]
 slab_alloc mm/slub.c:3486 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3493 [inline]
 kmem_cache_alloc+0x1d6/0x2ac mm/slub.c:3502
 getname_flags.part.0+0x48/0x2b6 fs/namei.c:140
 getname_flags+0x66/0x9c include/linux/audit.h:321

Memory state around the buggy address:
 ff20000007c23380: 00 00 f2 f2 00 00 00 f3 f3 f3 f3 f3 00 00 00 00
 ff20000007c23400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ff20000007c23480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ff20000007c23500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ff20000007c23580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================