BUG: Bad rss-counter state mm:000000004d8518ac type:MM_FILEPAGES val:33 BUG: Bad rss-counter state mm:000000004d8518ac type:MM_ANONPAGES val:22 ================================================================== BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 Read of size 8 at addr ffff88800eb6ea50 by task sshd/219 CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack_lvl+0x91/0xf0 print_report+0xcc/0x620 kasan_report+0xbe/0xf0 vma_interval_tree_remove+0xc75/0xec0 vma_prepare+0xc54/0x11a0 __split_vma+0x5af/0x950 do_vmi_align_munmap+0x2ba/0x11f0 do_vmi_munmap+0x1f1/0x2b0 mmap_region+0x1f9/0x2660 do_mmap+0x854/0xf00 vm_mmap_pgoff+0x1a6/0x3a0 ksys_mmap_pgoff+0x3af/0x500 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7fe4915b8d82 Code: eb aa 66 0f 1f 44 00 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 ae 03 01 00 16 00 RSP: 002b:00007ffeab705978 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe4915b8d82 RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe4909f2000 RBP: 00007fe4909f2000 R08: 0000000000000009 R09: 0000000000001000 R10: 0000000000000812 R11: 0000000000000206 R12: 0000559a7bee2ec0 R13: 00007ffeab705990 R14: 00007ffeab7059c0 R15: 00007ffeab705d20 Allocated by task 212: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc+0x16b/0x370 vm_area_dup+0x20/0x160 __split_vma+0x170/0x950 split_vma+0xc6/0x110 mprotect_fixup+0x8d2/0xb30 do_mprotect_pkey+0x87e/0xd40 __x64_sys_mprotect+0x78/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Freed by task 19: kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0x10d/0x4d0 rcu_core+0x8c8/0x2860 __do_softirq+0x1b7/0x7d4 Last potentially related work creation: kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x8e/0xa0 __call_rcu_common.constprop.0+0x6a/0xb90 remove_vma+0x139/0x170 do_vmi_align_munmap+0xd4a/0x11f0 do_vmi_munmap+0x1f1/0x2b0 __vm_munmap+0x138/0x3a0 __x64_sys_munmap+0x59/0x80 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 The buggy address belongs to the object at ffff88800eb6e9f8 which belongs to the cache vm_area_struct of size 168 The buggy address is located 88 bytes inside of freed 168-byte region [ffff88800eb6e9f8, ffff88800eb6eaa0) The buggy address belongs to the physical page: page:000000007a81db1f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xeb6e memcg:ffff88800fd4de01 flags: 0x100000000000200(slab|node=0|zone=1) page_type: 0xffffffff() raw: 0100000000000200 ffff8880087a0c80 ffffea000039adc0 dead000000000002 raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fd4de01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88800eb6e900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88800eb6e980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa >ffff88800eb6ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88800eb6ea80: fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 ffff88800eb6eb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== BUG: Bad rss-counter state mm:00000000e9a450de type:MM_FILEPAGES val:33 BUG: Bad rss-counter state mm:00000000e9a450de type:MM_ANONPAGES val:22 BUG: Bad rss-counter state mm:000000007a39c6e1 type:MM_FILEPAGES val:33 BUG: Bad rss-counter state mm:000000007a39c6e1 type:MM_ANONPAGES val:22 kmemleak: Automatic memory scanning thread ended cgroup: Unknown subsys name 'net' cgroup: Unknown subsys name 'rlimit'