================================================================== BUG: KASAN: slab-out-of-bounds in instrument_atomic_read include/linux/instrumented.h:68 [inline] BUG: KASAN: slab-out-of-bounds in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: slab-out-of-bounds in mapping_release_always include/linux/pagemap.h:279 [inline] BUG: KASAN: slab-out-of-bounds in folio_needs_release mm/internal.h:187 [inline] BUG: KASAN: slab-out-of-bounds in shrink_folio_list+0x2dbf/0x3e60 mm/vmscan.c:2067 Read of size 8 at addr ffff888025b751f1 by task syz-executor160/5029 CPU: 1 PID: 5029 Comm: syz-executor160 Not tainted 6.4.0-next-20230705-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 print_address_description.constprop.0+0x2c/0x3c0 mm/kasan/report.c:364 print_report mm/kasan/report.c:475 [inline] kasan_report+0x11d/0x130 mm/kasan/report.c:588 check_region_inline mm/kasan/generic.c:181 [inline] kasan_check_range+0xf0/0x190 mm/kasan/generic.c:187 instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] mapping_release_always include/linux/pagemap.h:279 [inline] folio_needs_release mm/internal.h:187 [inline] shrink_folio_list+0x2dbf/0x3e60 mm/vmscan.c:2067 evict_folios+0x794/0x1940 mm/vmscan.c:5181 try_to_shrink_lruvec+0x82c/0xb90 mm/vmscan.c:5357 lru_gen_shrink_lruvec mm/vmscan.c:5494 [inline] shrink_lruvec+0x216/0x2810 mm/vmscan.c:6269 shrink_node_memcgs mm/vmscan.c:6489 [inline] shrink_node+0x7ad/0x3690 mm/vmscan.c:6524 shrink_zones mm/vmscan.c:6763 [inline] do_try_to_free_pages+0x3cc/0x18f0 mm/vmscan.c:6825 try_to_free_mem_cgroup_pages+0x368/0x840 mm/vmscan.c:7140 try_charge_memcg+0x508/0x13b0 mm/memcontrol.c:2695 obj_cgroup_charge_pages mm/memcontrol.c:3109 [inline] __memcg_kmem_charge_page+0x16e/0x3c0 mm/memcontrol.c:3135 __alloc_pages+0x1f3/0x4a0 mm/page_alloc.c:4529 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279 vm_area_alloc_pages mm/vmalloc.c:3059 [inline] __vmalloc_area_node mm/vmalloc.c:3135 [inline] __vmalloc_node_range+0xb1c/0x14c0 mm/vmalloc.c:3316 kvmalloc_node+0x156/0x1a0 mm/util.c:629 kvmalloc include/linux/slab.h:720 [inline] xt_alloc_table_info+0x40/0xa0 net/netfilter/x_tables.c:1192 do_replace net/ipv4/netfilter/ip_tables.c:1122 [inline] do_ipt_set_ctl+0x514/0xb10 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x87/0xe0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xf2/0x110 net/ipv4/ip_sockglue.c:1467 raw_setsockopt+0x23e/0x2d0 net/ipv4/raw.c:835 __sys_setsockopt+0x2c6/0x5b0 net/socket.c:2263 __do_sys_setsockopt net/socket.c:2274 [inline] __se_sys_setsockopt net/socket.c:2271 [inline] __x64_sys_setsockopt+0xbe/0x160 net/socket.c:2271 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc1a0d1f099 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 15 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffed9edc988 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc1a0d1f099 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000258 R09: 00007ffed9edc9b0 R10: 0000000020000500 R11: 0000000000000246 R12: 00007ffed9edc9ac R13: 00007ffed9edc9c0 R14: 00007ffed9edca00 R15: 0000000000000000 Allocated by task 4480: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x7f/0x90 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:750 [inline] slab_alloc_node mm/slub.c:3470 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x16c/0x380 mm/slub.c:3494 anon_vma_alloc mm/rmap.c:94 [inline] anon_vma_fork+0xe2/0x630 mm/rmap.c:361 dup_mmap+0xfd9/0x19b0 kernel/fork.c:726 dup_mm kernel/fork.c:1688 [inline] copy_mm kernel/fork.c:1737 [inline] copy_process+0x6663/0x75c0 kernel/fork.c:2503 kernel_clone+0xeb/0x890 kernel/fork.c:2911 __do_sys_clone+0xba/0x100 kernel/fork.c:3054 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff888025b75110 which belongs to the cache anon_vma of size 208 The buggy address is located 17 bytes to the right of allocated 208-byte region [ffff888025b75110, ffff888025b751e0) The buggy address belongs to the physical page: page:ffffea000096dd40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x25b75 memcg:ffff88802344fa01 anon flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff888014674140 0000000000000000 dead000000000001 raw: 0000000000000000 00000000000f000f 00000001ffffffff ffff88802344fa01 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 4464, tgid 4464 (start-stop-daem), ts 17197698424, free_ts 13474953624 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x2db/0x350 mm/page_alloc.c:1569 prep_new_page mm/page_alloc.c:1576 [inline] get_page_from_freelist+0xfd9/0x2c40 mm/page_alloc.c:3256 __alloc_pages+0x1cb/0x4a0 mm/page_alloc.c:4512 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2279 alloc_slab_page mm/slub.c:1862 [inline] allocate_slab+0x25f/0x390 mm/slub.c:2009 new_slab mm/slub.c:2062 [inline] ___slab_alloc+0xbc3/0x15d0 mm/slub.c:3215 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3314 __slab_alloc_node mm/slub.c:3367 [inline] slab_alloc_node mm/slub.c:3460 [inline] slab_alloc mm/slub.c:3478 [inline] __kmem_cache_alloc_lru mm/slub.c:3485 [inline] kmem_cache_alloc+0x365/0x380 mm/slub.c:3494 anon_vma_alloc mm/rmap.c:94 [inline] __anon_vma_prepare+0x2c6/0x580 mm/rmap.c:203 anon_vma_prepare include/linux/rmap.h:159 [inline] do_anonymous_page mm/memory.c:4112 [inline] do_pte_missing mm/memory.c:3671 [inline] handle_pte_fault mm/memory.c:4949 [inline] __handle_mm_fault+0x38d6/0x3cc0 mm/memory.c:5089 handle_mm_fault+0x3c2/0xa20 mm/memory.c:5254 do_user_addr_fault+0x5d7/0x13a0 arch/x86/mm/fault.c:1415 handle_page_fault arch/x86/mm/fault.c:1509 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1565 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1160 [inline] free_unref_page_prepare+0x62e/0xcb0 mm/page_alloc.c:2383 free_unref_page+0x33/0x370 mm/page_alloc.c:2478 kasan_depopulate_vmalloc_pte+0x62/0x80 mm/kasan/shadow.c:427 apply_to_pte_range mm/memory.c:2602 [inline] apply_to_pmd_range mm/memory.c:2646 [inline] apply_to_pud_range mm/memory.c:2682 [inline] apply_to_p4d_range mm/memory.c:2718 [inline] __apply_to_page_range+0x5d2/0xe00 mm/memory.c:2752 kasan_release_vmalloc+0xab/0xc0 mm/kasan/shadow.c:544 __purge_vmap_area_lazy+0x886/0x1e60 mm/vmalloc.c:1770 drain_vmap_area_work+0x54/0xd0 mm/vmalloc.c:1804 process_one_work+0xa34/0x16f0 kernel/workqueue.c:2597 worker_thread+0x67d/0x10c0 kernel/workqueue.c:2748 kthread+0x344/0x440 kernel/kthread.c:389 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff888025b75080: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ffff888025b75100: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888025b75180: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ^ ffff888025b75200: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff888025b75280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc ==================================================================