==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x118/0x130 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc90003cdfe50 by task strace-static-x/5069

CPU: 0 PID: 5069 Comm: strace-static-x Not tainted 6.1.0-next-20221220-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:306 [inline]
 print_report+0x15e/0x45d mm/kasan/report.c:417
 kasan_report+0xc0/0xf0 mm/kasan/report.c:517
 profile_pc+0x118/0x130 arch/x86/kernel/time.c:44
 profile_tick+0x108/0x180 kernel/profile.c:339
 tick_sched_timer+0xf2/0x120 kernel/time/tick-sched.c:1480
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c6/0xcc0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x320/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
 __sysvec_apic_timer_interrupt+0x180/0x640 arch/x86/kernel/apic/apic.c:1113
 sysvec_apic_timer_interrupt+0x92/0xc0 arch/x86/kernel/apic/apic.c:1107
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:queued_read_lock_slowpath+0x134/0x2af kernel/locking/qrwlock.c:51
Code: 42 01 00 00 8b 45 00 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 ee 48 89 eb 49 c1 ee 03 83 e3 07 49 01 c6 83 c3 03 f3 90 <41> 0f b6 06 38 c3 7c 08 84 c0 0f 85 1b 01 00 00 8b 45 00 84 c0 75
RSP: 0018:ffffc90003cdfe48 EFLAGS: 00000286
RAX: 00000000000002ff RBX: 0000000000000003 RCX: ffffffff8a0b01cc
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8c40a080
RBP: ffffffff8c40a080 R08: 0000000000000001 R09: ffffffff8c40a083
R10: fffffbfff1881410 R11: 0000000000000000 R12: 1ffff9200079bfca
R13: ffffffff8c40a084 R14: fffffbfff1881410 R15: 0000000000000000
 ptrace_check_attach+0x1c/0x3f0 kernel/ptrace.c:260
 __do_sys_ptrace kernel/ptrace.c:1291 [inline]
 __se_sys_ptrace kernel/ptrace.c:1269 [inline]
 __x64_sys_ptrace+0x154/0x2a0 kernel/ptrace.c:1269
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x4e987a
Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 54
RSP: 002b:00007fffec93b900 EFLAGS: 00000206 ORIG_RAX: 0000000000000065
RAX: ffffffffffffffda RBX: 000000000184b368 RCX: 00000000004e987a
RDX: 0000000000000000 RSI: 00000000000016a7 RDI: 0000000000000018
RBP: 0000000000000018 R08: 0000000000000017 R09: 0000000000000012
R10: 0000000000000000 R11: 0000000000000206 R12: 000000000184d760
R13: 0000000000000000 R14: 000000000184cce0 R15: 000000000063f160
 </TASK>

The buggy address belongs to stack of task strace-static-x/5069
 and is located at offset 0 in frame:
 queued_read_lock_slowpath+0x0/0x2af arch/x86/include/asm/paravirt.h:591

This frame has 1 object:
 [32, 36) 'val'

The buggy address belongs to the virtual mapping at
 [ffffc90003cd8000, ffffc90003ce1000) created by:
 kernel_clone+0xeb/0xa40 kernel/fork.c:2681

The buggy address belongs to the physical page:
page:ffffea0001e23ec0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x788fb
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 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 5053, tgid 5053 (dhcpcd-run-hook), ts 50972503799, free_ts 50816570056
 prep_new_page mm/page_alloc.c:2531 [inline]
 get_page_from_freelist+0x119e/0x2a80 mm/page_alloc.c:4283
 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5549
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2282
 vm_area_alloc_pages mm/vmalloc.c:2989 [inline]
 __vmalloc_area_node mm/vmalloc.c:3059 [inline]
 __vmalloc_node_range+0x96d/0x13c0 mm/vmalloc.c:3229
 alloc_thread_stack_node kernel/fork.c:311 [inline]
 dup_task_struct kernel/fork.c:987 [inline]
 copy_process+0x12d2/0x75c0 kernel/fork.c:2097
 kernel_clone+0xeb/0xa40 kernel/fork.c:2681
 __do_sys_clone+0xba/0x100 kernel/fork.c:2822
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1446 [inline]
 free_pcp_prepare+0x4d0/0x9e0 mm/page_alloc.c:1496
 free_unref_page_prepare mm/page_alloc.c:3369 [inline]
 free_unref_page+0x1d/0x490 mm/page_alloc.c:3464
 __vunmap+0x85d/0xd30 mm/vmalloc.c:2727
 free_work+0x5c/0x80 mm/vmalloc.c:100
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x669/0x1090 kernel/workqueue.c:2436
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Memory state around the buggy address:
 ffffc90003cdfd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003cdfd80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc90003cdfe00: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 f3
                                                 ^
 ffffc90003cdfe80: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc90003cdff00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	42 01 00             	rex.X add %eax,(%rax)
   3:	00 8b 45 00 84 c0    	add    %cl,-0x3f7bffbb(%rbx)
   9:	74 36                	je     0x41
   b:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  12:	fc ff df
  15:	49 89 ee             	mov    %rbp,%r14
  18:	48 89 eb             	mov    %rbp,%rbx
  1b:	49 c1 ee 03          	shr    $0x3,%r14
  1f:	83 e3 07             	and    $0x7,%ebx
  22:	49 01 c6             	add    %rax,%r14
  25:	83 c3 03             	add    $0x3,%ebx
  28:	f3 90                	pause
* 2a:	41 0f b6 06          	movzbl (%r14),%eax <-- trapping instruction
  2e:	38 c3                	cmp    %al,%bl
  30:	7c 08                	jl     0x3a
  32:	84 c0                	test   %al,%al
  34:	0f 85 1b 01 00 00    	jne    0x155
  3a:	8b 45 00             	mov    0x0(%rbp),%eax
  3d:	84 c0                	test   %al,%al
  3f:	75                   	.byte 0x75