==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x186/0x1a0 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc9000350fba0 by task syz-executor.2/5211

CPU: 1 PID: 5211 Comm: syz-executor.2 Not tainted 6.9.0-rc4-syzkaller-00329-g48cf398f15fc #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0xc3/0x620 mm/kasan/report.c:488
 kasan_report+0xd9/0x110 mm/kasan/report.c:601
 profile_pc+0x186/0x1a0 arch/x86/kernel/time.c:44
 profile_tick+0xd3/0x140 kernel/profile.c:339
 tick_sched_handle kernel/time/tick-sched.c:277 [inline]
 tick_nohz_handler+0x380/0x530 kernel/time/tick-sched.c:297
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x657/0xcc0 kernel/time/hrtimer.c:1756
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1818
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:queued_read_lock_slowpath+0x135/0x2b1 kernel/locking/qrwlock.c:51
Code: 00 8b 03 84 c0 74 36 48 b8 00 00 00 00 00 fc ff df 49 89 de 48 89 dd 49 c1 ee 03 83 e5 07 49 01 c6 83 c5 03 f3 90 41 0f b6 06 <40> 38 c5 7c 08 84 c0 0f 85 1f 01 00 00 8b 03 84 c0 75 e7 48 c7 c0
RSP: 0018:ffffc9000350fb98 EFLAGS: 00000286
RAX: 0000000000000000 RBX: ffffffff8d40a080 RCX: ffffffff8adee21b
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8d40a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff1a81410
R10: ffffffff8d40a083 R11: 0000000000000000 R12: 1ffff920006a1f74
R13: ffffffff8d40a084 R14: fffffbfff1a81410 R15: ffffffff8151cdb9
 __do_wait+0x105/0x890 kernel/exit.c:1587
 do_wait+0x219/0x570 kernel/exit.c:1631
 kernel_wait4+0x16c/0x280 kernel/exit.c:1790
 __do_sys_wait4+0x15f/0x170 kernel/exit.c:1818
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb1467a8d7
Code: 89 7c 24 10 48 89 4c 24 18 e8 d5 a3 02 00 4c 8b 54 24 18 8b 54 24 14 41 89 c0 48 8b 74 24 08 8b 7c 24 10 b8 3d 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 89 44 24 10 e8 25 a4 02 00 8b 44
RSP: 002b:00007ffcb29b00c0 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 000000000000029d RCX: 00007fcb1467a8d7
RDX: 0000000040000001 RSI: 00007ffcb29b014c RDI: 00000000ffffffff
RBP: 00007ffcb29b014c R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000000f3b4 R14: 000000000000f3b1 R15: 0000000000000002
 </TASK>

The buggy address belongs to stack of task syz-executor.2/5211
 and is located at offset 0 in frame:
 queued_read_lock_slowpath+0x0/0x2b1 arch/x86/include/asm/paravirt.h:584

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

The buggy address belongs to the virtual mapping at
 [ffffc90003508000, ffffc90003511000) created by:
 kernel_clone+0xfd/0x980 kernel/fork.c:2797

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2c459
flags: 0xfff80000000000(node=0|zone=1|lastcpupid=0xfff)
page_type: 0xffffffff()
raw: 00fff80000000000 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 5197, tgid 448717457 (syz-executor.2), ts 5197, free_ts 48314812758
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534
 prep_new_page mm/page_alloc.c:1541 [inline]
 get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3317
 __alloc_pages+0x22b/0x2460 mm/page_alloc.c:4575
 alloc_pages_mpol+0x275/0x610 mm/mempolicy.c:2264
 vm_area_alloc_pages mm/vmalloc.c:3561 [inline]
 __vmalloc_area_node mm/vmalloc.c:3637 [inline]
 __vmalloc_node_range+0xa26/0x14b0 mm/vmalloc.c:3818
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1115 [inline]
 copy_process+0xe56/0x9090 kernel/fork.c:2220
 kernel_clone+0xfd/0x980 kernel/fork.c:2797
 __do_sys_clone+0xba/0x100 kernel/fork.c:2940
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 5168 tgid 5168 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1141 [inline]
 free_unref_page_prepare+0x527/0xb10 mm/page_alloc.c:2347
 free_unref_page+0x33/0x3c0 mm/page_alloc.c:2487
 __folio_put_small mm/swap.c:119 [inline]
 __folio_put+0x166/0x1f0 mm/swap.c:142
 folio_put include/linux/mm.h:1506 [inline]
 put_page include/linux/mm.h:1578 [inline]
 anon_pipe_buf_release+0x3fa/0x4b0 fs/pipe.c:128
 pipe_buf_release include/linux/pipe_fs_i.h:219 [inline]
 pipe_update_tail fs/pipe.c:224 [inline]
 pipe_read+0x647/0x1400 fs/pipe.c:344
 call_read_iter include/linux/fs.h:2104 [inline]
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x9fd/0xb80 fs/read_write.c:476
 ksys_read+0x1f8/0x260 fs/read_write.c:619
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffffc9000350fa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000350fb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000350fb80: 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00
                               ^
 ffffc9000350fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000350fc80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	00 8b 03 84 c0 74    	add    %cl,0x74c08403(%rbx)
   6:	36 48 b8 00 00 00 00 	ss movabs $0xdffffc0000000000,%rax
   d:	00 fc ff df
  11:	49 89 de             	mov    %rbx,%r14
  14:	48 89 dd             	mov    %rbx,%rbp
  17:	49 c1 ee 03          	shr    $0x3,%r14
  1b:	83 e5 07             	and    $0x7,%ebp
  1e:	49 01 c6             	add    %rax,%r14
  21:	83 c5 03             	add    $0x3,%ebp
  24:	f3 90                	pause
  26:	41 0f b6 06          	movzbl (%r14),%eax
* 2a:	40 38 c5             	cmp    %al,%bpl <-- trapping instruction
  2d:	7c 08                	jl     0x37
  2f:	84 c0                	test   %al,%al
  31:	0f 85 1f 01 00 00    	jne    0x156
  37:	8b 03                	mov    (%rbx),%eax
  39:	84 c0                	test   %al,%al
  3b:	75 e7                	jne    0x24
  3d:	48                   	rex.W
  3e:	c7                   	.byte 0xc7
  3f:	c0                   	.byte 0xc0