==================================================================
BUG: KASAN: stack-out-of-bounds in profile_pc+0x186/0x1a0 arch/x86/kernel/time.c:44
Read of size 8 at addr ffffc900037dfba0 by task syz-executor/14681

CPU: 2 PID: 14681 Comm: syz-executor Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+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:1687 [inline]
 __hrtimer_run_queues+0x657/0xcc0 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
 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:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline]
RIP: 0010:queued_read_lock_slowpath+0x12f/0x2b1 kernel/locking/qrwlock.c:51
Code: d2 0f 85 45 01 00 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
RSP: 0018:ffffc900037dfb98 EFLAGS: 00000286
RAX: 00000000000002ff RBX: ffffffff8d80a080 RCX: ffffffff8aeb10cb
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8d80a080
RBP: 0000000000000003 R08: 0000000000000001 R09: fffffbfff1b01410
R10: ffffffff8d80a083 R11: 0000000000000000 R12: 1ffff920006fbf74
R13: ffffffff8d80a084 R14: fffffbfff1b01410 R15: ffffffff81519b09
 __do_wait+0x105/0x890 kernel/exit.c:1583
 do_wait+0x219/0x570 kernel/exit.c:1627
 kernel_wait4+0x16c/0x280 kernel/exit.c:1786
 __do_sys_wait4+0x15f/0x170 kernel/exit.c:1814
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78c636be17
Code: 89 7c 24 10 48 89 4c 24 18 e8 85 14 03 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 d5 14 03 00 8b 44
RSP: 002b:00007ffe7484c4d0 EFLAGS: 00000293 ORIG_RAX: 000000000000003d
RAX: ffffffffffffffda RBX: 0000000000000046 RCX: 00007f78c636be17
RDX: 0000000040000001 RSI: 00007ffe7484c54c RDI: 00000000ffffffff
RBP: 00007ffe7484c54c R08: 0000000000000000 R09: 00007f78c718e080
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000005c133 R14: 000000000005c11f R15: 00007ffe7484c5b0
 </TASK>

The buggy address belongs to stack of task syz-executor/14681
 and is located at offset 0 in frame:
 queued_read_lock_slowpath+0x0/0x2b1

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

The buggy address belongs to the virtual mapping at
 [ffffc900037d8000, ffffc900037e1000) 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:0xffff888064e71a40 pfn:0x64e70
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff888064e71a40 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 0x102dc2(GFP_HIGHUSER|__GFP_NOWARN|__GFP_ZERO), pid 12910, tgid 12910 (syz-executor), ts 358635660714, free_ts 358095381718
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1468
 prep_new_page mm/page_alloc.c:1476 [inline]
 get_page_from_freelist+0x136a/0x2e50 mm/page_alloc.c:3420
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4678
 alloc_pages_mpol_noprof+0x275/0x610 mm/mempolicy.c:2265
 vm_area_alloc_pages mm/vmalloc.c:3566 [inline]
 __vmalloc_area_node mm/vmalloc.c:3642 [inline]
 __vmalloc_node_range_noprof+0xa6a/0x1520 mm/vmalloc.c:3823
 alloc_thread_stack_node kernel/fork.c:309 [inline]
 dup_task_struct kernel/fork.c:1115 [inline]
 copy_process+0x2f38/0x8f10 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+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 14627 tgid 14627 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1088 [inline]
 free_unref_page+0x64a/0xe40 mm/page_alloc.c:2583
 vfree+0x181/0x7a0 mm/vmalloc.c:3346
 snd_dma_free_pages+0x51/0x70 sound/core/memalloc.c:126
 do_free_pages sound/core/pcm_memory.c:89 [inline]
 do_free_pages sound/core/pcm_memory.c:84 [inline]
 snd_pcm_lib_free_pages+0x172/0x390 sound/core/pcm_memory.c:493
 do_hw_free sound/core/pcm_native.c:888 [inline]
 snd_pcm_release_substream.part.0+0x2a8/0x340 sound/core/pcm_native.c:2706
 snd_pcm_release_substream+0x5b/0x70 sound/core/pcm_native.c:2700
 snd_pcm_oss_release_file sound/core/oss/pcm_oss.c:2398 [inline]
 snd_pcm_oss_release_file sound/core/oss/pcm_oss.c:2390 [inline]
 snd_pcm_oss_release+0x13b/0x320 sound/core/oss/pcm_oss.c:2577
 __fput+0x408/0xbb0 fs/file_table.c:422
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffffc900037dfa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900037dfb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc900037dfb80: 00 00 00 00 f1 f1 f1 f1 04 f3 f3 f3 00 00 00 00
                               ^
 ffffc900037dfc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc900037dfc80: 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	d2 0f                	rorb   %cl,(%rdi)
   2:	85 45 01             	test   %eax,0x1(%rbp)
   5:	00 00                	add    %al,(%rax)
   7:	8b 03                	mov    (%rbx),%eax
   9:	84 c0                	test   %al,%al
   b:	74 36                	je     0x43
   d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  14:	fc ff df
  17:	49 89 de             	mov    %rbx,%r14
  1a:	48 89 dd             	mov    %rbx,%rbp
  1d:	49 c1 ee 03          	shr    $0x3,%r14
  21:	83 e5 07             	and    $0x7,%ebp
  24:	49 01 c6             	add    %rax,%r14
  27:	83 c5 03             	add    $0x3,%ebp
* 2a:	f3 90                	pause <-- trapping instruction
  2c:	41 0f b6 06          	movzbl (%r14),%eax
  30:	40 38 c5             	cmp    %al,%bpl
  33:	7c 08                	jl     0x3d
  35:	84 c0                	test   %al,%al
  37:	0f 85 1f 01 00 00    	jne    0x15c
  3d:	8b 03                	mov    (%rbx),%eax
  3f:	84                   	.byte 0x84