==================================================================
BUG: KASAN: slab-out-of-bounds in bq_xmit_all+0x134/0x11d0 kernel/bpf/devmap.c:385
Read of size 8 at addr ffff888067349b60 by task syz.4.794/8067

CPU: 0 PID: 8067 Comm: syz.4.794 Not tainted 6.10.0-syzkaller-11323-g7846b618e0a4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 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:4300
 __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:__rcu_read_unlock+0x8b/0x110 kernel/rcu/tree_plugin.h:443
Code: 20 84 c0 0f 85 88 00 00 00 41 83 3f 00 75 29 42 0f b6 04 23 84 c0 75 62 41 8b 45 00 3d 00 00 00 40 73 0f 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 cc cc cc cc 90 0f 0b 90 eb eb 4c 89 f7 e8 7f 00 00 00
RSP: 0018:ffffc9000b6172c8 EFLAGS: 00000287
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc9000b617203
RDX: 0000000000000001 RSI: ffffffff8bcadea0 RDI: ffffffff8c1fa440
RBP: 0000000000000000 R08: ffffffff8fae9caf R09: 1ffffffff1f5d395
R10: dffffc0000000000 R11: fffffbfff1f5d396 R12: 0000000000000009
R13: ffffea0001824340 R14: 0000000000000000 R15: ffff88802d77a248
 page_table_check_free include/linux/page_table_check.h:41 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_folios+0xf26/0x19c0 mm/page_alloc.c:2637
 folios_put_refs+0x93a/0xa60 mm/swap.c:1024
 free_pages_and_swap_cache+0x2ea/0x690 mm/swap_state.c:329
 __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:3354
 __mmput+0x115/0x380 kernel/fork.c:1343
 exit_mm+0x220/0x310 kernel/exit.c:566
 do_exit+0x9b2/0x27f0 kernel/exit.c:864
 do_group_exit+0x207/0x2c0 kernel/exit.c:1026
 get_signal+0x16a1/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x860 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: 0033:0x7fb34a775b59
Code: Unable to access opcode bytes at 0x7fb34a775b2f.
RSP: 002b:00007fb34b4a50f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb34a905f68 RCX: 00007fb34a775b59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb34a905f68
RBP: 00007fb34a905f60 R08: 00007fb34b4a56c0 R09: 00007fb34b4a56c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb34a905f6c
R13: 000000000000000b R14: 00007fff2301df30 R15: 00007fff2301e018
 </TASK>

Allocated by task 7095:
 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:3979 [inline]
 slab_alloc_node mm/slub.c:4028 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4035
 vm_area_dup+0x27/0x290 kernel/fork.c:484
 dup_mmap kernel/fork.c:693 [inline]
 dup_mm kernel/fork.c:1671 [inline]
 copy_mm+0xc7b/0x1f30 kernel/fork.c:1720
 copy_process+0x187a/0x3dc0 kernel/fork.c:2373
 kernel_clone+0x223/0x870 kernel/fork.c:2780
 __do_sys_clone kernel/fork.c:2923 [inline]
 __se_sys_clone kernel/fork.c:2907 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2907
 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 ffff888067349aa8
 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 [ffff888067349aa8, ffff888067349b60)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x67349
memcg:ffff88802b341501
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000000 ffff888015eefb40 ffffea00019bb3c0 0000000000000004
raw: 0000000000000000 0000000000100010 00000001ffffefff ffff88802b341501
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 7745, tgid 7745 (dhcpcd-run-hook), ts 338969575997, free_ts 338929799303
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473
 prep_new_page mm/page_alloc.c:1481 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683
 __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:2304
 allocate_slab+0x5a/0x2f0 mm/slub.c:2467
 new_slab mm/slub.c:2520 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3706
 __slab_alloc+0x58/0xa0 mm/slub.c:3796
 __slab_alloc_node mm/slub.c:3849 [inline]
 slab_alloc_node mm/slub.c:4016 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4035
 vm_area_dup+0x27/0x290 kernel/fork.c:484
 dup_mmap kernel/fork.c:693 [inline]
 dup_mm kernel/fork.c:1671 [inline]
 copy_mm+0xc7b/0x1f30 kernel/fork.c:1720
 copy_process+0x187a/0x3dc0 kernel/fork.c:2373
 kernel_clone+0x223/0x870 kernel/fork.c:2780
 __do_sys_clone kernel/fork.c:2923 [inline]
 __se_sys_clone kernel/fork.c:2907 [inline]
 __x64_sys_clone+0x258/0x2a0 kernel/fork.c:2907
 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
page last free pid 7761 tgid 7761 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1093 [inline]
 free_unref_folios+0xf12/0x19c0 mm/page_alloc.c:2637
 folios_put_refs+0x93a/0xa60 mm/swap.c:1024
 free_pages_and_swap_cache+0x5c8/0x690 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:3354
 __mmput+0x115/0x380 kernel/fork.c:1343
 exit_mm+0x220/0x310 kernel/exit.c:566
 do_exit+0x9b2/0x27f0 kernel/exit.c:864
 do_group_exit+0x207/0x2c0 kernel/exit.c:1026
 __do_sys_exit_group kernel/exit.c:1037 [inline]
 __se_sys_exit_group kernel/exit.c:1035 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1035
 x64_sys_call+0x26c3/0x26d0 arch/x86/include/generated/asm/syscalls_64.h:232
 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:
 ffff888067349a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc
 ffff888067349a80: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00
>ffff888067349b00: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
                                                       ^
 ffff888067349b80: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888067349c00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
   0:	20 84 c0 0f 85 88 00 	and    %al,0x88850f(%rax,%rax,8)
   7:	00 00                	add    %al,(%rax)
   9:	41 83 3f 00          	cmpl   $0x0,(%r15)
   d:	75 29                	jne    0x38
   f:	42 0f b6 04 23       	movzbl (%rbx,%r12,1),%eax
  14:	84 c0                	test   %al,%al
  16:	75 62                	jne    0x7a
  18:	41 8b 45 00          	mov    0x0(%r13),%eax
  1c:	3d 00 00 00 40       	cmp    $0x40000000,%eax
  21:	73 0f                	jae    0x32
  23:	5b                   	pop    %rbx
  24:	41 5c                	pop    %r12
  26:	41 5d                	pop    %r13
  28:	41 5e                	pop    %r14
* 2a:	41 5f                	pop    %r15 <-- trapping instruction
  2c:	5d                   	pop    %rbp
  2d:	c3                   	ret
  2e:	cc                   	int3
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	90                   	nop
  33:	0f 0b                	ud2
  35:	90                   	nop
  36:	eb eb                	jmp    0x23
  38:	4c 89 f7             	mov    %r14,%rdi
  3b:	e8 7f 00 00 00       	call   0xbf