syzbot

task:klogd           state:R  running task     stack:0     pid:2819  tgid:2819  ppid:1      flags:0x00000000
Call Trace:
[<ffffffff859106ea>] context_switch kernel/sched/core.c:5400 [inline]
[<ffffffff859106ea>] __schedule+0xc40/0x3196 kernel/sched/core.c:6727
==================================================================
BUG: KASAN: stack-out-of-bounds in walk_stackframe+0x396/0x410 arch/riscv/kernel/stacktrace.c:58
Read of size 8 at addr ff20000003a035d0 by task swapper/0/0

CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.8.0-rc1-syzkaller #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff80010868>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:121
[<ffffffff858a9b60>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:127
[<ffffffff85904e9c>] __dump_stack lib/dump_stack.c:88 [inline]
[<ffffffff85904e9c>] dump_stack_lvl+0xe8/0x154 lib/dump_stack.c:106
[<ffffffff858b45e0>] print_address_description mm/kasan/report.c:377 [inline]
[<ffffffff858b45e0>] print_report+0x26e/0x57e mm/kasan/report.c:488
[<ffffffff80899772>] kasan_report+0xf0/0x1b8 mm/kasan/report.c:601
[<ffffffff8089b59e>] __asan_report_load8_noabort+0x12/0x1a mm/kasan/report_generic.c:381
[<ffffffff80010740>] walk_stackframe+0x396/0x410 arch/riscv/kernel/stacktrace.c:58
[<ffffffff80010868>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:121
[<ffffffff858a9b60>] show_stack+0x34/0x40 arch/riscv/kernel/stacktrace.c:127
[<ffffffff8016a578>] sched_show_task kernel/sched/core.c:9171 [inline]
[<ffffffff8016a578>] sched_show_task+0x446/0x5c0 kernel/sched/core.c:9145
[<ffffffff8017d29a>] show_state_filter+0xcc/0x28e kernel/sched/core.c:9216
[<ffffffff818f2ea4>] show_state include/linux/sched/debug.h:21 [inline]
[<ffffffff818f2ea4>] fn_show_state+0x1a/0x22 drivers/tty/vt/keyboard.c:614
[<ffffffff818f3552>] k_spec drivers/tty/vt/keyboard.c:667 [inline]
[<ffffffff818f3552>] k_spec+0xf8/0x140 drivers/tty/vt/keyboard.c:656
[<ffffffff818f5d16>] kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline]
[<ffffffff818f5d16>] kbd_event+0x856/0xf54 drivers/tty/vt/keyboard.c:1543
[<ffffffff836fe5b4>] input_to_handler+0x374/0x466 drivers/input/input.c:132
[<ffffffff837058ba>] input_pass_values+0x54a/0x7d0 drivers/input/input.c:161
[<ffffffff83705fe0>] input_event_dispose+0x4a0/0x5a0 drivers/input/input.c:389
[<ffffffff837087b2>] input_handle_event+0x11e/0xc9e drivers/input/input.c:406
[<ffffffff837093c8>] input_event drivers/input/input.c:435 [inline]
[<ffffffff837093c8>] input_event+0x96/0xc8 drivers/input/input.c:427
[<ffffffff83fafe02>] hidinput_hid_event+0x7d0/0x238e drivers/hid/hid-input.c:1731
[<ffffffff83f98956>] hid_process_event+0x48a/0x59e drivers/hid/hid-core.c:1541
[<ffffffff83f98f04>] hid_input_array_field+0x49a/0x66a drivers/hid/hid-core.c:1653
[<ffffffff83f99aa2>] hid_process_report drivers/hid/hid-core.c:1695 [inline]
[<ffffffff83f99aa2>] hid_report_raw_event+0x9ce/0x10a6 drivers/hid/hid-core.c:2016
[<ffffffff83f9a470>] hid_input_report+0x2f6/0x3fa drivers/hid/hid-core.c:2090
[<ffffffff840e0930>] hid_irq_in+0x31c/0x6d0 drivers/hid/usbhid/hid-core.c:284
[<ffffffff83085b00>] __usb_hcd_giveback_urb+0x34a/0x5d4 drivers/usb/core/hcd.c:1650
[<ffffffff830860e4>] usb_hcd_giveback_urb+0x35a/0x3fc drivers/usb/core/hcd.c:1733
[<ffffffff83528c22>] dummy_timer+0x1318/0x3348 drivers/usb/gadget/udc/dummy_hcd.c:1987
[<ffffffff802ea156>] call_timer_fn+0x1cc/0x7fe kernel/time/timer.c:1700
[<ffffffff802eafb8>] expire_timers kernel/time/timer.c:1751 [inline]
[<ffffffff802eafb8>] __run_timers+0x830/0xae0 kernel/time/timer.c:2038
[<ffffffff802eb2be>] run_timer_softirq+0x56/0xb6 kernel/time/timer.c:2051
[<ffffffff85928c6c>] __do_softirq+0x480/0xfe2 kernel/softirq.c:553
[<ffffffff800d2af0>] invoke_softirq kernel/softirq.c:427 [inline]
[<ffffffff800d2af0>] __irq_exit_rcu kernel/softirq.c:632 [inline]
[<ffffffff800d2af0>] irq_exit_rcu+0x220/0x3c2 kernel/softirq.c:644
[<ffffffff8590696c>] handle_riscv_irq+0x40/0x4c arch/riscv/kernel/traps.c:363
[<ffffffff85928762>] call_on_irq_stack+0x32/0x40 arch/riscv/kernel/entry.S:258

The buggy address belongs to the virtual mapping at
 [ff20000003a00000, ff20000003a05000) created by:
 kernel_clone+0x11e/0xa16 kernel/fork.c:2901

The buggy address belongs to the physical page:
page:ff1c000002578b40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x95e2d
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 2818, tgid 2818 (start-stop-daem), ts 84949635800, free_ts 82883964800
 __set_page_owner+0x32/0x31e mm/page_owner.c:195
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x9c/0xfc mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0x882/0x23e8 mm/page_alloc.c:3311
 __alloc_pages+0x1ee/0x2032 mm/page_alloc.c:4567
 alloc_pages_mpol+0xf8/0x46e mm/mempolicy.c:2133
 alloc_pages+0x1f6/0x246 mm/mempolicy.c:2204
 vm_area_alloc_pages mm/vmalloc.c:3063 [inline]
 __vmalloc_area_node mm/vmalloc.c:3139 [inline]
 __vmalloc_node_range+0x968/0x1316 mm/vmalloc.c:3320
 alloc_thread_stack_node kernel/fork.c:307 [inline]
 dup_task_struct kernel/fork.c:1112 [inline]
 copy_process+0x2c2a/0x6b54 kernel/fork.c:2326
 kernel_clone+0x11e/0xa16 kernel/fork.c:2901
 __do_sys_clone+0xe4/0x118 kernel/fork.c:3044
 __se_sys_clone kernel/fork.c:3012 [inline]
 __riscv_sys_clone+0xa0/0x10e kernel/fork.c:3012
 syscall_handler+0x94/0x118 arch/riscv/include/asm/syscall.h:90
 do_trap_ecall_u+0x108/0x11a arch/riscv/kernel/traps.c:326
 ret_from_exception+0x0/0x64 arch/riscv/kernel/entry.S:112
page last free pid 2815 tgid 2815 stack trace:
 __reset_page_owner+0x54/0x20c mm/page_owner.c:150
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x3d0/0xae2 mm/page_alloc.c:2346
 free_unref_page+0x90/0x422 mm/page_alloc.c:2486
 free_the_page mm/page_alloc.c:563 [inline]
 __free_pages+0x152/0x190 mm/page_alloc.c:4653
 __free_slab+0xbc/0x112 mm/slub.c:2424
 free_slab+0x38/0x190 mm/slub.c:2447
 discard_slab+0x3e/0x56 mm/slub.c:2453
 __slab_free+0x2d6/0x30c mm/slub.c:4211
 do_slab_free mm/slub.c:4252 [inline]
 ___cache_free+0x134/0x152 mm/slub.c:4319
 qlink_free mm/kasan/quarantine.c:160 [inline]
 qlist_free_all+0x64/0x170 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x158/0x1ba mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x5e/0x84 mm/kasan/common.c:324
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 __do_kmalloc_node mm/slub.c:3980 [inline]
 __kmalloc+0x260/0x40c mm/slub.c:3994
 kmalloc include/linux/slab.h:594 [inline]
 tomoyo_add_entry security/tomoyo/common.c:2023 [inline]
 tomoyo_supervisor+0x358/0x104c security/tomoyo/common.c:2095
 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
 tomoyo_env_perm+0x194/0x202 security/tomoyo/environ.c:63
 tomoyo_environ security/tomoyo/domain.c:672 [inline]
 tomoyo_find_next_domain+0xd1a/0x1de8 security/tomoyo/domain.c:878

Memory state around the buggy address:
 ff20000003a03480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ff20000003a03500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ff20000003a03580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                                 ^
 ff20000003a03600: 00 00 00 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
 ff20000003a03680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================