hpet: Lost 1 RTC interrupts
hpet: Lost 1 RTC interrupts
==================================================================
BUG: KASAN: stack-out-of-bounds in list_empty include/linux/list.h:373 [inline]
BUG: KASAN: stack-out-of-bounds in bpf_net_ctx_get_all_used_flush_lists include/linux/filter.h:846 [inline]
BUG: KASAN: stack-out-of-bounds in xdp_do_check_flushed+0x429/0x4e0 net/core/filter.c:4298
Read of size 8 at addr ffffc9000644fa58 by task syz.0.3477/17677

CPU: 2 UID: 0 PID: 17677 Comm: syz.0.3477 Not tainted 6.10.0-syzkaller-12381-gc33ffdb70cc6 #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:93 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
 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
 list_empty include/linux/list.h:373 [inline]
 bpf_net_ctx_get_all_used_flush_lists include/linux/filter.h:846 [inline]
 xdp_do_check_flushed+0x429/0x4e0 net/core/filter.c:4298
 __napi_poll.constprop.0+0xd1/0x550 net/core/dev.c:6774
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0xa92/0x1010 net/core/dev.c:6962
 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
 do_softirq kernel/softirq.c:455 [inline]
 do_softirq+0xb2/0xf0 kernel/softirq.c:442
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:382
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 netif_rx net/core/dev.c:5245 [inline]
 netif_rx+0x20b/0x2c0 net/core/dev.c:5234
 tipc_clone_to_loopback+0x331/0x470 net/tipc/bearer.c:783
 tipc_loopback_trace net/tipc/bearer.h:254 [inline]
 tipc_node_xmit+0xbb8/0xe60 net/tipc/node.c:1699
 __tipc_sendstream+0x872/0x1170 net/tipc/socket.c:1624
 tipc_sendstream+0x4f/0x70 net/tipc/socket.c:1548
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x9b4/0xb50 net/socket.c:2597
 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2651
 __sys_sendmsg+0x117/0x1f0 net/socket.c:2680
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fb6579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f572457c EFLAGS: 00000292 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 0000000020000480
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

The buggy address belongs to stack of task syz.0.3477/17677
 and is located at offset 136 in frame:
 __tipc_sendstream+0x0/0x1170 net/tipc/socket.c:2556

This frame has 2 objects:
 [48, 56) 'timeout'
 [80, 120) 'wait_'

The buggy address belongs to the virtual mapping at
 [ffffc90006448000, ffffc90006451000) created by:
 kernel_clone+0xfd/0x980 kernel/fork.c:2781

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88806afe1798 pfn:0x6afe1
memcg:ffff888026743e02
flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff00000000000 0000000000000000 dead000000000122 0000000000000000
raw: ffff88806afe1798 0000000000000000 00000001ffffffff ffff888026743e02
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 17588, tgid 17588 (syz.0.3449), ts 782096572671, free_ts 779650508470
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x1351/0x2e50 mm/page_alloc.c:3438
 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4696
 alloc_pages_mpol_noprof+0x275/0x610 mm/mempolicy.c:2263
 vm_area_alloc_pages mm/vmalloc.c:3584 [inline]
 __vmalloc_area_node mm/vmalloc.c:3660 [inline]
 __vmalloc_node_range_noprof+0xa6a/0x1520 mm/vmalloc.c:3841
 alloc_thread_stack_node kernel/fork.c:313 [inline]
 dup_task_struct kernel/fork.c:1113 [inline]
 copy_process+0x29f5/0x6f50 kernel/fork.c:2204
 kernel_clone+0xfd/0x980 kernel/fork.c:2781
 __do_sys_clone3+0x1f5/0x270 kernel/fork.c:3085
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 do_int80_emulation+0x104/0x200 arch/x86/entry/common.c:253
 asm_int80_emulation+0x1a/0x20 arch/x86/include/asm/idtentry.h:626
page last free pid 5281 tgid 5281 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_page+0x64a/0xe40 mm/page_alloc.c:2608
 vfree+0x181/0x7a0 mm/vmalloc.c:3364
 delayed_vfree_work+0x56/0x70 mm/vmalloc.c:3285
 process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffffc9000644f900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000644f980: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 f1 f1
>ffffc9000644fa00: 00 f2 f2 f2 00 00 00 00 00 f3 f3 f3 f3 f3 00 00
                                                    ^
 ffffc9000644fa80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffc9000644fb00: 00 f1 f1 f1 f1 f1 f1 00 00 00 00 04 f3 f3 f3 f3
==================================================================
vkms_vblank_simulate: vblank timer overrun
hpet: Lost 19 RTC interrupts
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi