RBP: 00007f10447b51d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002
R13: 00007ffc676b558f R14: 00007f10447b5300 R15: 0000000000022000
 </TASK>
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: use-after-free in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline]
BUG: KASAN: use-after-free in __refcount_sub_and_test include/linux/refcount.h:272 [inline]
BUG: KASAN: use-after-free in __refcount_dec_and_test include/linux/refcount.h:315 [inline]
BUG: KASAN: use-after-free in refcount_dec_and_test include/linux/refcount.h:333 [inline]
BUG: KASAN: use-after-free in kref_put include/linux/kref.h:64 [inline]
BUG: KASAN: use-after-free in anon_vma_name_put include/linux/mm_inline.h:365 [inline]
BUG: KASAN: use-after-free in free_anon_vma_name include/linux/mm_inline.h:396 [inline]
BUG: KASAN: use-after-free in vm_area_free_no_check+0x7e/0x130 kernel/fork.c:405
Write of size 4 at addr ffff888148c16d11 by task syz-executor.3/5814

CPU: 1 PID: 5814 Comm: syz-executor.3 Not tainted 5.15.98-syzkaller-00348-g7364b7abbafb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/17/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 print_address_description+0x87/0x3b0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:427 [inline]
 kasan_report+0x179/0x1c0 mm/kasan/report.c:444
 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
 atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline]
 __refcount_sub_and_test include/linux/refcount.h:272 [inline]
 __refcount_dec_and_test include/linux/refcount.h:315 [inline]
 refcount_dec_and_test include/linux/refcount.h:333 [inline]
 kref_put include/linux/kref.h:64 [inline]
 anon_vma_name_put include/linux/mm_inline.h:365 [inline]
 free_anon_vma_name include/linux/mm_inline.h:396 [inline]
 vm_area_free_no_check+0x7e/0x130 kernel/fork.c:405
 vm_area_free kernel/fork.c:418 [inline]
 dup_mmap kernel/fork.c:680 [inline]
 dup_mm+0xd73/0x12c0 kernel/fork.c:1513
 copy_mm+0x107/0x1b0 kernel/fork.c:1565
 copy_process+0x12bc/0x3260 kernel/fork.c:2256
 kernel_clone+0x21e/0x9e0 kernel/fork.c:2659
 __do_sys_clone kernel/fork.c:2785 [inline]
 __se_sys_clone kernel/fork.c:2769 [inline]
 __x64_sys_clone+0x23f/0x290 kernel/fork.c:2769
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1045a420f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f10447b5118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f1045b61f80 RCX: 00007f1045a420f9
RDX: 0000000000000000 RSI: 00000000200009c0 RDI: 000000008c022000
RBP: 00007f10447b51d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002
R13: 00007ffc676b558f R14: 00007f10447b5300 R15: 0000000000022000
 </TASK>

Allocated by task 335:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:433 [inline]
 __kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:466
 kasan_slab_alloc include/linux/kasan.h:217 [inline]
 slab_post_alloc_hook+0x53/0x2c0 mm/slab.h:550
 slab_alloc_node mm/slub.c:3238 [inline]
 slab_alloc mm/slub.c:3246 [inline]
 kmem_cache_alloc+0xf5/0x200 mm/slub.c:3251
 vm_area_dup+0x26/0x230 kernel/fork.c:367
 dup_mmap kernel/fork.c:600 [inline]
 dup_mm+0x81b/0x12c0 kernel/fork.c:1513
 copy_mm+0x107/0x1b0 kernel/fork.c:1565
 copy_process+0x12bc/0x3260 kernel/fork.c:2256
 kernel_clone+0x21e/0x9e0 kernel/fork.c:2659
 __do_sys_clone kernel/fork.c:2785 [inline]
 __se_sys_clone kernel/fork.c:2769 [inline]
 __x64_sys_clone+0x23f/0x290 kernel/fork.c:2769
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Freed by task 25:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0x126/0x160 mm/kasan/common.c:365
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373
 kasan_slab_free include/linux/kasan.h:193 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0xbd/0x190 mm/slub.c:1749
 slab_free mm/slub.c:3517 [inline]
 kmem_cache_free+0x116/0x2e0 mm/slub.c:3533
 __free_vm_area_struct+0x1c/0x20 kernel/fork.c:389
 rcu_do_batch+0x57a/0xc10 kernel/rcu/tree.c:2509
 rcu_core+0x517/0x1020 kernel/rcu/tree.c:2749
 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2762
 __do_softirq+0x26d/0x5bf kernel/softirq.c:565

Last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu kernel/rcu/tree.c:2993 [inline]
 call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3073
 free_vm_area_struct kernel/fork.c:394 [inline]
 vm_area_free_no_check+0xff/0x130 kernel/fork.c:408
 vm_area_free+0x53/0x60 kernel/fork.c:418
 remove_vma mm/mmap.c:190 [inline]
 exit_mmap+0x50d/0x6f0 mm/mmap.c:3217
 __mmput+0x95/0x310 kernel/fork.c:1171
 mmput+0x5b/0x170 kernel/fork.c:1194
 exit_mm kernel/exit.c:551 [inline]
 do_exit+0xbb4/0x2b60 kernel/exit.c:862
 do_group_exit+0x141/0x310 kernel/exit.c:997
 get_signal+0x7a3/0x1630 kernel/signal.c:2891
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:300
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

Second to last potentially related work creation:
 kasan_save_stack+0x3b/0x60 mm/kasan/common.c:38
 __kasan_record_aux_stack+0xd3/0xf0 mm/kasan/generic.c:348
 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358
 __call_rcu kernel/rcu/tree.c:2993 [inline]
 call_rcu+0x133/0x12a0 kernel/rcu/tree.c:3073
 free_vm_area_struct kernel/fork.c:394 [inline]
 vm_area_free_no_check+0xff/0x130 kernel/fork.c:408
 vm_area_free+0x53/0x60 kernel/fork.c:418
 remove_vma mm/mmap.c:190 [inline]
 exit_mmap+0x50d/0x6f0 mm/mmap.c:3217
 __mmput+0x95/0x310 kernel/fork.c:1171
 mmput+0x5b/0x170 kernel/fork.c:1194
 exit_mm kernel/exit.c:551 [inline]
 do_exit+0xbb4/0x2b60 kernel/exit.c:862
 do_group_exit+0x141/0x310 kernel/exit.c:997
 get_signal+0x7a3/0x1630 kernel/signal.c:2891
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x26/0x160 kernel/entry/common.c:300
 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x61/0xcb

The buggy address belongs to the object at ffff888148c16cb8
 which belongs to the cache vm_area_struct of size 232
The buggy address is located 89 bytes inside of
 232-byte region [ffff888148c16cb8, ffff888148c16da0)
The buggy address belongs to the page:
page:ffffea0005230580 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x148c16
flags: 0x4000000000000200(slab|zone=1)
raw: 4000000000000200 ffffea0004532c40 0000000400000004 ffff8881001b5080
raw: 0000000000000000 00000000000d000d 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 24210, ts 1376748892428, free_ts 1376746722634
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1a3/0x1b0 mm/page_alloc.c:2502
 prep_new_page mm/page_alloc.c:2508 [inline]
 get_page_from_freelist+0x2c14/0x2cf0 mm/page_alloc.c:4291
 __alloc_pages+0x386/0x7b0 mm/page_alloc.c:5569
 allocate_slab mm/slub.c:1930 [inline]
 new_slab+0x92/0x490 mm/slub.c:1993
 ___slab_alloc+0x39e/0x830 mm/slub.c:3026
 __slab_alloc+0x4a/0x90 mm/slub.c:3113
 slab_alloc_node mm/slub.c:3204 [inline]
 slab_alloc mm/slub.c:3246 [inline]
 kmem_cache_alloc+0x134/0x200 mm/slub.c:3251
 vm_area_dup+0x26/0x230 kernel/fork.c:367
 dup_mmap kernel/fork.c:600 [inline]
 dup_mm+0x81b/0x12c0 kernel/fork.c:1513
 copy_mm+0x107/0x1b0 kernel/fork.c:1565
 copy_process+0x12bc/0x3260 kernel/fork.c:2256
 kernel_clone+0x21e/0x9e0 kernel/fork.c:2659
 __do_sys_clone kernel/fork.c:2785 [inline]
 __se_sys_clone kernel/fork.c:2769 [inline]
 __x64_sys_clone+0x23f/0x290 kernel/fork.c:2769
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1370 [inline]
 free_pcp_prepare mm/page_alloc.c:1442 [inline]
 free_unref_page_prepare+0x7c8/0x7d0 mm/page_alloc.c:3441
 free_unref_page_list+0x15d/0x980 mm/page_alloc.c:3562
 release_pages+0x1310/0x1370 mm/swap.c:1009
 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:320
 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:240 [inline]
 tlb_flush_mmu mm/mmu_gather.c:247 [inline]
 tlb_finish_mmu+0x177/0x320 mm/mmu_gather.c:338
 exit_mmap+0x3ef/0x6f0 mm/mmap.c:3211
 __mmput+0x95/0x310 kernel/fork.c:1171
 mmput+0x5b/0x170 kernel/fork.c:1194
 exit_mm kernel/exit.c:551 [inline]
 do_exit+0xbb4/0x2b60 kernel/exit.c:862
 do_group_exit+0x141/0x310 kernel/exit.c:997
 get_signal+0x7a3/0x1630 kernel/signal.c:2891
 arch_do_signal_or_restart+0xbd/0x1680 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop+0xa0/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:207
 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:313
 irqentry_exit+0x12/0x40 kernel/entry/common.c:404

Memory state around the buggy address:
 ffff888148c16c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
 ffff888148c16c80: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb
>ffff888148c16d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                         ^
 ffff888148c16d80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb
 ffff888148c16e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 5814 at lib/refcount.c:28 refcount_warn_saturate+0x158/0x1a0 lib/refcount.c:28
Modules linked in:
CPU: 1 PID: 5814 Comm: syz-executor.3 Tainted: G    B             5.15.98-syzkaller-00348-g7364b7abbafb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/17/2023
RIP: 0010:refcount_warn_saturate+0x158/0x1a0 lib/refcount.c:28
Code: 04 01 48 c7 c7 c0 8a 62 85 e8 c4 d1 e4 fe 0f 0b eb 8b e8 8b 58 12 ff c6 05 b9 54 85 04 01 48 c7 c7 20 8b 62 85 e8 a8 d1 e4 fe <0f> 0b e9 6c ff ff ff e8 6c 58 12 ff c6 05 9b 54 85 04 01 48 c7 c7
RSP: 0018:ffffc9000641f948 EFLAGS: 00010246
RAX: 7ffc5b7814462e00 RBX: 0000000000000003 RCX: 0000000000040000
RDX: ffffc90001d82000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000641f958 R08: ffffffff815690d5 R09: ffffed103ee265e8
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11027591ea8
R13: ffff88813ac8f540 R14: 0000000000000003 R15: ffff888148c16d11
FS:  00007f10447b5700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff2f18f2058 CR3: 000000014aab2000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 __refcount_sub_and_test include/linux/refcount.h:283 [inline]
 __refcount_dec_and_test include/linux/refcount.h:315 [inline]
 refcount_dec_and_test include/linux/refcount.h:333 [inline]
 kref_put include/linux/kref.h:64 [inline]
 anon_vma_name_put include/linux/mm_inline.h:365 [inline]
 free_anon_vma_name include/linux/mm_inline.h:396 [inline]
 vm_area_free_no_check+0x123/0x130 kernel/fork.c:405
 vm_area_free kernel/fork.c:418 [inline]
 dup_mmap kernel/fork.c:680 [inline]
 dup_mm+0xd73/0x12c0 kernel/fork.c:1513
 copy_mm+0x107/0x1b0 kernel/fork.c:1565
 copy_process+0x12bc/0x3260 kernel/fork.c:2256
 kernel_clone+0x21e/0x9e0 kernel/fork.c:2659
 __do_sys_clone kernel/fork.c:2785 [inline]
 __se_sys_clone kernel/fork.c:2769 [inline]
 __x64_sys_clone+0x23f/0x290 kernel/fork.c:2769
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f1045a420f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f10447b5118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f1045b61f80 RCX: 00007f1045a420f9
RDX: 0000000000000000 RSI: 00000000200009c0 RDI: 000000008c022000
RBP: 00007f10447b51d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002
R13: 00007ffc676b558f R14: 00007f10447b5300 R15: 0000000000022000
 </TASK>
---[ end trace 5c915480f05c6851 ]---