==================================================================
BUG: KASAN: use-after-free in bq_enqueue kernel/bpf/cpumap.c:749 [inline]
BUG: KASAN: use-after-free in cpu_map_enqueue+0xb4/0x370 kernel/bpf/cpumap.c:775
Read of size 8 at addr ffff88813736c508 by task syz.0.3552/12615

CPU: 1 PID: 12615 Comm: syz.0.3552 Not tainted 6.1.112-syzkaller-00109-gfadb08b36671 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:316 [inline]
 print_report+0x158/0x4e0 mm/kasan/report.c:427
 kasan_report+0x13c/0x170 mm/kasan/report.c:531
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:351
 bq_enqueue kernel/bpf/cpumap.c:749 [inline]
 cpu_map_enqueue+0xb4/0x370 kernel/bpf/cpumap.c:775
 __xdp_do_redirect_frame net/core/filter.c:4298 [inline]
 xdp_do_redirect_frame+0x275/0x800 net/core/filter.c:4356
 xdp_test_run_batch net/bpf/test_run.c:314 [inline]
 bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362
 bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1393
 bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3665
 __sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5020
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f965197e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f96527c0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9651b35f80 RCX: 00007f965197e719
RDX: 0000000000000050 RSI: 00000000200000c0 RDI: 000000000000000a
RBP: 00007f96519f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9651b35f80 R15: 00007ffcee8b0de8
 </TASK>

Allocated by task 12398:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:379 [inline]
 __kasan_kmalloc+0x9c/0xb0 mm/kasan/common.c:388
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 kmalloc_trace+0x44/0xa0 mm/slab_common.c:1033
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 push_stack+0x8e/0x4f0 kernel/bpf/verifier.c:1227
 check_cond_jmp_op kernel/bpf/verifier.c:10472 [inline]
 do_check+0x9369/0xe040 kernel/bpf/verifier.c:12711
 do_check_common+0x6ca/0xca0 kernel/bpf/verifier.c:14915
 do_check_main kernel/bpf/verifier.c:14978 [inline]
 bpf_check+0x6d0d/0x17ec0 kernel/bpf/verifier.c:15555
 bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2626
 __sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:5002
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 12398:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x131/0x180 mm/kasan/common.c:241
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:249
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1745 [inline]
 slab_free_freelist_hook mm/slub.c:1771 [inline]
 slab_free mm/slub.c:3684 [inline]
 __kmem_cache_free+0x218/0x3b0 mm/slub.c:3697
 kfree+0x7a/0xf0 mm/slab_common.c:990
 pop_stack kernel/bpf/verifier.c:1213 [inline]
 do_check_common+0x7ec/0xca0 kernel/bpf/verifier.c:14924
 do_check_main kernel/bpf/verifier.c:14978 [inline]
 bpf_check+0x6d0d/0x17ec0 kernel/bpf/verifier.c:15555
 bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2626
 __sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:5002
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 insert_work+0x56/0x310 kernel/workqueue.c:1368
 __queue_work+0x9b6/0xd70 kernel/workqueue.c:1527
 queue_work_on+0x105/0x170 kernel/workqueue.c:1555
 queue_work include/linux/workqueue.h:510 [inline]
 schedule_work include/linux/workqueue.h:571 [inline]
 __cpu_map_entry_replace kernel/bpf/cpumap.c:558 [inline]
 cpu_map_free+0x1e7/0x2c0 kernel/bpf/cpumap.c:641
 bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:637
 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xb4/0xc0 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:496
 __call_rcu_common kernel/rcu/tree.c:2807 [inline]
 call_rcu+0xdc/0x10f0 kernel/rcu/tree.c:2926
 __cpu_map_entry_replace kernel/bpf/cpumap.c:556 [inline]
 cpu_map_free+0x109/0x2c0 kernel/bpf/cpumap.c:641
 bpf_map_free_deferred+0xf7/0x1b0 kernel/bpf/syscall.c:637
 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff88813736c500
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 8 bytes inside of
 192-byte region [ffff88813736c500, ffff88813736c5c0)

The buggy address belongs to the physical page:
page:ffffea0004dcdb00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88813736cc00 pfn:0x13736c
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 ffffea0004fc90c8 ffffea00045711c8 ffff888100042c00
raw: ffff88813736cc00 000000000010000b 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 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 6929, tgid 6928 (syz.3.1921), ts 215381462149, free_ts 211929734261
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x213/0x220 mm/page_alloc.c:2590
 prep_new_page+0x1b/0x110 mm/page_alloc.c:2597
 get_page_from_freelist+0x2980/0x2a10 mm/page_alloc.c:4439
 __alloc_pages+0x234/0x610 mm/page_alloc.c:5728
 alloc_slab_page+0x6c/0xf0
 allocate_slab mm/slub.c:1962 [inline]
 new_slab+0x90/0x3e0 mm/slub.c:2015
 ___slab_alloc+0x6f9/0xb80 mm/slub.c:3203
 __slab_alloc+0x5d/0xa0 mm/slub.c:3302
 slab_alloc_node mm/slub.c:3387 [inline]
 __kmem_cache_alloc_node+0x1af/0x250 mm/slub.c:3460
 kmalloc_trace+0x2a/0xa0 mm/slab_common.c:1028
 kmalloc include/linux/slab.h:557 [inline]
 kzalloc include/linux/slab.h:693 [inline]
 push_stack+0x8e/0x4f0 kernel/bpf/verifier.c:1227
 check_cond_jmp_op kernel/bpf/verifier.c:10472 [inline]
 do_check+0x9369/0xe040 kernel/bpf/verifier.c:12711
 do_check_common+0x6ca/0xca0 kernel/bpf/verifier.c:14915
 do_check_main kernel/bpf/verifier.c:14978 [inline]
 bpf_check+0x6d0d/0x17ec0 kernel/bpf/verifier.c:15555
 bpf_prog_load+0x1304/0x1bf0 kernel/bpf/syscall.c:2626
 __sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:5002
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1498 [inline]
 free_pcp_prepare mm/page_alloc.c:1572 [inline]
 free_unref_page_prepare+0x83d/0x850 mm/page_alloc.c:3511
 free_unref_page+0xb2/0x5c0 mm/page_alloc.c:3607
 free_the_page mm/page_alloc.c:798 [inline]
 __free_pages+0x61/0xf0 mm/page_alloc.c:5817
 free_pages+0x7c/0x90 mm/page_alloc.c:5828
 kasan_depopulate_vmalloc_pte+0x6a/0x90 mm/kasan/shadow.c:375
 apply_to_pte_range mm/memory.c:2686 [inline]
 apply_to_pmd_range mm/memory.c:2730 [inline]
 apply_to_pud_range mm/memory.c:2766 [inline]
 apply_to_p4d_range mm/memory.c:2802 [inline]
 __apply_to_page_range+0x8dd/0xbe0 mm/memory.c:2836
 apply_to_existing_page_range+0x38/0x50 mm/memory.c:2869
 kasan_release_vmalloc+0x9a/0xb0 mm/kasan/shadow.c:492
 __purge_vmap_area_lazy+0x152c/0x1680 mm/vmalloc.c:1781
 drain_vmap_area_work+0x3e/0xd0 mm/vmalloc.c:1810
 process_one_work+0x73d/0xcb0 kernel/workqueue.c:2299
 worker_thread+0xa60/0x1260 kernel/workqueue.c:2446
 kthread+0x26d/0x300 kernel/kthread.c:386
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Memory state around the buggy address:
 ffff88813736c400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88813736c480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff88813736c500: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88813736c580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88813736c600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
general protection fault, probably for non-canonical address 0xe0956d435ede0618: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x04ab8a1af6f030c0-0x04ab8a1af6f030c7]
CPU: 1 PID: 12615 Comm: syz.0.3552 Tainted: G    B              6.1.112-syzkaller-00109-gfadb08b36671 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline]
RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 b6 e1 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08
RSP: 0018:ffffc90002bf7600 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffffffff86747898 RCX: ffff88810d17e540
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000008
RBP: ffffc90002bf7638 R08: ffffffff81982bee R09: fffffbfff0f6defd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f00000
R13: 009571435ede0618 R14: 04ab8a1af6f030c6 R15: 04ac01990000306e
FS:  00007f96527c06c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555832e7d0 CR3: 000000011a091000 CR4: 00000000003506a0
DR0: 0000000020000300 DR1: 0000000020000300 DR2: 0000000020000300
DR3: 0000000020000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 __xdp_do_redirect_frame net/core/filter.c:4298 [inline]
 xdp_do_redirect_frame+0x275/0x800 net/core/filter.c:4356
 xdp_test_run_batch net/bpf/test_run.c:314 [inline]
 bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362
 bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1393
 bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3665
 __sys_bpf+0x59f/0x7f0 kernel/bpf/syscall.c:5020
 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5104 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104
 x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f965197e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f96527c0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9651b35f80 RCX: 00007f965197e719
RDX: 0000000000000050 RSI: 00000000200000c0 RDI: 000000000000000a
RBP: 00007f96519f132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9651b35f80 R15: 00007ffcee8b0de8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline]
RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775
Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 b6 e1 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08
RSP: 0018:ffffc90002bf7600 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffffffff86747898 RCX: ffff88810d17e540
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000008
RBP: ffffc90002bf7638 R08: ffffffff81982bee R09: fffffbfff0f6defd
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881f6f00000
R13: 009571435ede0618 R14: 04ab8a1af6f030c6 R15: 04ac01990000306e
FS:  00007f96527c06c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555832e7d0 CR3: 000000011a091000 CR4: 00000000003506a0
DR0: 0000000020000300 DR1: 0000000020000300 DR2: 0000000020000300
DR3: 0000000020000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	e8 03 42 80 3c       	call   0x3c804208
   5:	30 00                	xor    %al,(%rax)
   7:	74 08                	je     0x11
   9:	48 89 df             	mov    %rbx,%rdi
   c:	e8 b6 e1 24 00       	call   0x24e1c7
  11:	4c 8b 23             	mov    (%rbx),%r12
  14:	4f 8d 74 3c 58       	lea    0x58(%r12,%r15,1),%r14
  19:	4d 89 f5             	mov    %r14,%r13
  1c:	49 c1 ed 03          	shr    $0x3,%r13
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 0f b6 44 05 00    	movzbl 0x0(%r13,%rax,1),%eax <-- trapping instruction
  30:	84 c0                	test   %al,%al
  32:	0f 85 a8 01 00 00    	jne    0x1e0
  38:	4d 01 fc             	add    %r15,%r12
  3b:	41 8b 1e             	mov    (%r14),%ebx
  3e:	bf                   	.byte 0xbf
  3f:	08                   	.byte 0x8