================================================================== 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 ffff888022464521 by task syz-executor.4/19829 CPU: 0 PID: 19829 Comm: syz-executor.4 Not tainted 6.4.0-next-20230707-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 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 udp_setsockopt+0x84/0xd0 net/ipv4/udp.c:2778 __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: 0033:0x7f54f428c389 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:00007f54f50b1168 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f54f43abf80 RCX: 00007f54f428c389 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f54f42d7493 R08: 000000000000057e R09: 0000000000000000 R10: 0000000020000580 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe4d3e4f4f R14: 00007f54f50b1300 R15: 0000000000022000 Allocated by task 5057: 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:762 [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+0x173/0x390 mm/slub.c:3494 anon_vma_alloc mm/rmap.c:94 [inline] anon_vma_fork+0xe2/0x630 mm/rmap.c:361 dup_mmap+0xc0f/0x14b0 kernel/fork.c:732 dup_mm kernel/fork.c:1694 [inline] copy_mm kernel/fork.c:1743 [inline] copy_process+0x6663/0x75c0 kernel/fork.c:2509 kernel_clone+0xeb/0x890 kernel/fork.c:2917 __do_sys_clone+0xba/0x100 kernel/fork.c:3060 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 ffff888022464440 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 [ffff888022464440, ffff888022464510) The buggy address belongs to the physical page: page:ffffea0000891900 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888022464990 pfn:0x22464 memcg:ffff88807d751101 anon flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff888014674140 0000000000000000 dead000000000001 raw: ffff888022464990 00000000800f000c 00000001ffffffff ffff88807d751101 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 4479, tgid 4479 (udevd), ts 262524204497, free_ts 262465110900 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+0x371/0x390 mm/slub.c:3494 anon_vma_alloc mm/rmap.c:94 [inline] anon_vma_fork+0xe2/0x630 mm/rmap.c:361 dup_mmap+0xc0f/0x14b0 kernel/fork.c:732 dup_mm kernel/fork.c:1694 [inline] copy_mm kernel/fork.c:1743 [inline] copy_process+0x6663/0x75c0 kernel/fork.c:2509 kernel_clone+0xeb/0x890 kernel/fork.c:2917 __do_sys_clone+0xba/0x100 kernel/fork.c:3060 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 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 __unfreeze_partials+0x1fe/0x220 mm/slub.c:2647 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x195/0x220 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x63/0x90 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:762 [inline] slab_alloc_node mm/slub.c:3470 [inline] __kmem_cache_alloc_node+0x1d3/0x350 mm/slub.c:3509 __do_kmalloc_node mm/slab_common.c:984 [inline] __kmalloc+0x4e/0x190 mm/slab_common.c:998 kmalloc include/linux/slab.h:586 [inline] tomoyo_add_entry security/tomoyo/common.c:2022 [inline] tomoyo_supervisor+0xccb/0xec0 security/tomoyo/common.c:2094 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x413/0x570 security/tomoyo/file.c:734 security_file_ioctl+0x54/0xb0 security/security.c:2608 __do_sys_ioctl fs/ioctl.c:864 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0xb7/0x210 fs/ioctl.c:856 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 Memory state around the buggy address: ffff888022464400: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff888022464480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888022464500: 00 00 fc fc fc fc fc fc fc fc 00 00 00 00 00 00 ^ ffff888022464580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888022464600: 00 00 00 00 fc fc fc fc fc fc fc fc 00 00 00 00 ==================================================================