==================================================================
BUG: KASAN: slab-out-of-bounds in bq_xmit_all+0x134/0x11d0 kernel/bpf/devmap.c:385
Read of size 8 at addr ffff88802ccb60b8 by task syz.2.558/7801

CPU: 1 UID: 0 PID: 7801 Comm: syz.2.558 Not tainted 6.11.0-rc1-next-20240729-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 bq_xmit_all+0x134/0x11d0 kernel/bpf/devmap.c:385
 __dev_flush+0x81/0x160 kernel/bpf/devmap.c:425
 xdp_do_check_flushed+0x129/0x240 net/core/filter.c:4307
 __napi_poll+0xe4/0x490 net/core/dev.c:6774
 napi_poll net/core/dev.c:6840 [inline]
 net_rx_action+0x89b/0x1240 net/core/dev.c:6962
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 common_interrupt+0xaa/0xd0 arch/x86/kernel/irq.c:278
 </IRQ>
 <TASK>
 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693
RIP: 0010:finish_task_switch+0x1ea/0x870 kernel/sched/core.c:5113
Code: c9 50 e8 39 b8 0b 00 48 83 c4 08 4c 89 f7 e8 dd 38 00 00 0f 1f 44 00 00 4c 89 f7 e8 e0 b8 5f 0a e8 fb 85 37 00 fb 48 8b 5d c0 <48> 8d bb f8 15 00 00 48 89 f8 48 c1 e8 03 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900097bed68 EFLAGS: 00000286
RAX: f43bf954e8f7ab00 RBX: ffff88801e475a00 RCX: ffffffff817022ea
RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffffff8c607c40
RBP: ffffc900097bedb0 R08: ffffffff93737837 R09: 1ffffffff26e6f06
R10: dffffc0000000000 R11: fffffbfff26e6f07 R12: 1ffff11017267ef3
R13: dffffc0000000000 R14: ffff8880b933ea00 R15: ffff8880b933f798
 context_switch kernel/sched/core.c:5242 [inline]
 __schedule+0x1808/0x4a60 kernel/sched/core.c:6603
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6782
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6806
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x130/0x140 kernel/locking/spinlock.c:194
 __debug_check_no_obj_freed lib/debugobjects.c:999 [inline]
 debug_check_no_obj_freed+0x561/0x580 lib/debugobjects.c:1020
 free_pages_prepare mm/page_alloc.c:1101 [inline]
 free_unref_folios+0x5cb/0x1b00 mm/page_alloc.c:2660
 folios_put_refs+0x76e/0x860 mm/swap.c:1039
 free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:332
 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
 tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373
 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
 exit_mmap+0x44f/0xc80 mm/mmap.c:3425
 __mmput+0x115/0x390 kernel/fork.c:1347
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x27f0 kernel/exit.c:869
 do_group_exit+0x207/0x2c0 kernel/exit.c:1031
 get_signal+0x16a1/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [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+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f74f6b773b9
Code: Unable to access opcode bytes at 0x7f74f6b7738f.
RSP: 002b:00007f74f79000f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f74f6d05f88 RCX: 00007f74f6b773b9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f74f6d05f88
RBP: 00007f74f6d05f80 R08: 00007f74f79006c0 R09: 00007f74f79006c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f74f6d05f8c
R13: 000000000000000b R14: 00007ffe974d54e0 R15: 00007ffe974d55c8
 </TASK>

Allocated by task 5426:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
 vm_area_dup+0x27/0x290 kernel/fork.c:487
 dup_mmap kernel/fork.c:696 [inline]
 dup_mm kernel/fork.c:1674 [inline]
 copy_mm+0xc7b/0x1f30 kernel/fork.c:1723
 copy_process+0x186b/0x3d90 kernel/fork.c:2376
 kernel_clone+0x226/0x8f0 kernel/fork.c:2788
 __do_sys_clone kernel/fork.c:2931 [inline]
 __se_sys_clone kernel/fork.c:2915 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2915
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802ccb6000
 which belongs to the cache vm_area_struct of size 184
The buggy address is located 0 bytes to the right of
 allocated 184-byte region [ffff88802ccb6000, ffff88802ccb60b8)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2ccb6
memcg:ffff888022537601
anon flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000000 ffff8880166fdb40 ffffea0000af0740 dead00000000000d
raw: 0000000000000000 0000000000100010 00000001fdffffff ffff888022537601
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x152cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 6508, tgid 6508 (modprobe), ts 150861592849, free_ts 150860251594
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3442
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4700
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2321
 allocate_slab+0x5a/0x2f0 mm/slub.c:2484
 new_slab mm/slub.c:2537 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
 __slab_alloc+0x58/0xa0 mm/slub.c:3813
 __slab_alloc_node mm/slub.c:3866 [inline]
 slab_alloc_node mm/slub.c:4025 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4044
 vm_area_dup+0x27/0x290 kernel/fork.c:487
 __split_vma+0x1a9/0xc30 mm/mmap.c:2465
 do_vmi_align_munmap+0x433/0x18c0 mm/mmap.c:2676
 do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
 mmap_region+0x72f/0x2090 mm/mmap.c:2881
 do_mmap+0x8f9/0x1010 mm/mmap.c:1468
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514
page last free pid 6513 tgid 6510 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_folios+0x103a/0x1b00 mm/page_alloc.c:2660
 folios_put_refs+0x76e/0x860 mm/swap.c:1039
 free_pages_and_swap_cache+0x5c8/0x690 mm/swap_state.c:335
 __tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:366 [inline]
 tlb_flush_mmu+0x3a3/0x680 mm/mmu_gather.c:373
 tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:465
 unmap_region+0x2df/0x350 mm/mmap.c:2441
 do_vmi_align_munmap+0x1122/0x18c0 mm/mmap.c:2754
 do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
 __vm_munmap+0x1fc/0x400 mm/mmap.c:3109
 __do_sys_munmap mm/mmap.c:3126 [inline]
 __se_sys_munmap mm/mmap.c:3123 [inline]
 __x64_sys_munmap+0x68/0x80 mm/mmap.c:3123
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88802ccb5f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88802ccb6000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88802ccb6080: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc 00
                                        ^
 ffff88802ccb6100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88802ccb6180: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc 00 00
==================================================================
----------------
Code disassembly (best guess):
   0:	c9                   	leave
   1:	50                   	push   %rax
   2:	e8 39 b8 0b 00       	call   0xbb840
   7:	48 83 c4 08          	add    $0x8,%rsp
   b:	4c 89 f7             	mov    %r14,%rdi
   e:	e8 dd 38 00 00       	call   0x38f0
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	4c 89 f7             	mov    %r14,%rdi
  1b:	e8 e0 b8 5f 0a       	call   0xa5fb900
  20:	e8 fb 85 37 00       	call   0x378620
  25:	fb                   	sti
  26:	48 8b 5d c0          	mov    -0x40(%rbp),%rbx
* 2a:	48 8d bb f8 15 00 00 	lea    0x15f8(%rbx),%rdi <-- trapping instruction
  31:	48 89 f8             	mov    %rdi,%rax
  34:	48 c1 e8 03          	shr    $0x3,%rax
  38:	49                   	rex.WB
  39:	be 00 00 00 00       	mov    $0x0,%esi
  3e:	00 fc                	add    %bh,%ah