syzkaller login: [ 32.722201] BUG: Bad rss-counter state mm:0000000074012fa0 type:MM_FILEPAGES val:33 [ 32.723639] BUG: Bad rss-counter state mm:0000000074012fa0 type:MM_ANONPAGES val:22 [ 32.899368] ================================================================== [ 32.900591] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.901832] Read of size 8 at addr ffff88800d69fd08 by task sshd/220 [ 32.902865] [ 32.903220] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.904231] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.905355] Call Trace: [ 32.905728] [ 32.906061] dump_stack_lvl+0x91/0xf0 [ 32.906636] print_report+0xcc/0x620 [ 32.907241] ? __virt_addr_valid+0x102/0x340 [ 32.907896] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.908621] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.909359] kasan_report+0xbe/0xf0 [ 32.909930] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.910684] vma_interval_tree_remove+0xc75/0xec0 [ 32.911430] vma_prepare+0xc54/0x11a0 [ 32.912011] __split_vma+0x5af/0x950 [ 32.912578] ? __pfx___split_vma+0x10/0x10 [ 32.913216] ? find_held_lock+0x2c/0x110 [ 32.913846] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.914530] ? lock_is_held_type+0x9f/0x120 [ 32.915187] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.915916] ? mtree_range_walk+0x632/0x900 [ 32.916573] ? mas_walk+0x5c7/0x7c0 [ 32.917177] do_vmi_munmap+0x1f1/0x2b0 [ 32.917763] mmap_region+0x1f9/0x2660 [ 32.918355] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.919005] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.919872] ? __pfx_lock_acquire+0x10/0x10 [ 32.920421] ? __pfx_mmap_region+0x10/0x10 [ 32.920964] ? security_mmap_addr+0x7d/0xa0 [ 32.921496] ? get_unmapped_area+0x1f5/0x3f0 [ 32.922062] do_mmap+0x854/0xf00 [ 32.922497] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.923010] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.923572] ksys_mmap_pgoff+0x3af/0x500 [ 32.924085] do_syscall_64+0x3f/0x90 [ 32.924566] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.925237] RIP: 0033:0x7f357fc1fd82 [ 32.925694] 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 [ 32.927857] RSP: 002b:00007fff2ecfebb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.928754] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f357fc1fd82 [ 32.929603] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f357f059000 [ 32.930476] RBP: 00007f357f059000 R08: 0000000000000009 R09: 0000000000001000 [ 32.931346] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559345c76ec0 [ 32.932202] R13: 00007fff2ecfebd0 R14: 00007fff2ecfec00 R15: 00007fff2ecfef60 [ 32.933062] [ 32.933349] [ 32.933564] Allocated by task 213: [ 32.934009] kasan_save_stack+0x22/0x50 [ 32.934513] kasan_set_track+0x25/0x30 [ 32.935049] __kasan_slab_alloc+0x59/0x70 [ 32.935568] kmem_cache_alloc+0x16b/0x370 [ 32.936109] vm_area_dup+0x20/0x160 [ 32.936560] __split_vma+0x170/0x950 [ 32.937034] split_vma+0xc6/0x110 [ 32.937467] mprotect_fixup+0x8d2/0xb30 [ 32.937990] do_mprotect_pkey+0x87e/0xd40 [ 32.938506] __x64_sys_mprotect+0x78/0xc0 [ 32.939054] do_syscall_64+0x3f/0x90 [ 32.939525] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.940198] [ 32.940411] Freed by task 210: [ 32.940804] kasan_save_stack+0x22/0x50 [ 32.941314] kasan_set_track+0x25/0x30 [ 32.941810] kasan_save_free_info+0x2b/0x50 [ 32.942362] __kasan_slab_free+0x10a/0x190 [ 32.942906] kmem_cache_free+0x10d/0x4d0 [ 32.943449] rcu_core+0x8c8/0x2860 [ 32.943910] __do_softirq+0x1b7/0x7d4 [ 32.944388] [ 32.944604] Last potentially related work creation: [ 32.945213] kasan_save_stack+0x22/0x50 [ 32.945715] __kasan_record_aux_stack+0x8e/0xa0 [ 32.946299] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.946956] remove_vma+0x139/0x170 [ 32.947420] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.947983] do_vmi_munmap+0x1f1/0x2b0 [ 32.948469] __vm_munmap+0x138/0x3a0 [ 32.948950] __x64_sys_munmap+0x59/0x80 [ 32.949446] do_syscall_64+0x3f/0x90 [ 32.949963] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.950624] [ 32.950856] The buggy address belongs to the object at ffff88800d69fcb0 [ 32.950856] which belongs to the cache vm_area_struct of size 168 [ 32.952354] The buggy address is located 88 bytes inside of [ 32.952354] freed 168-byte region [ffff88800d69fcb0, ffff88800d69fd58) [ 32.953759] [ 32.953984] The buggy address belongs to the physical page: [ 32.954630] page:00000000f3e4677c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd69f [ 32.955742] memcg:ffff88800fd9f901 [ 32.956179] flags: 0x100000000000200(slab|node=0|zone=1) [ 32.956826] page_type: 0xffffffff() [ 32.957276] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 32.958215] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fd9f901 [ 32.959136] page dumped because: kasan: bad access detected [ 32.959785] [ 32.960044] Memory state around the buggy address: [ 32.960625] ffff88800d69fc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 32.961494] ffff88800d69fc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 32.962362] >ffff88800d69fd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 32.963236] ^ [ 32.963670] ffff88800d69fd80: fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb [ 32.964534] ffff88800d69fe00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 32.965405] ================================================================== [ 32.966817] Disabling lock debugging due to kernel taint [ 34.867982] BUG: Bad rss-counter state mm:000000002ac405ff type:MM_FILEPAGES val:33 [ 34.869473] BUG: Bad rss-counter state mm:000000002ac405ff type:MM_ANONPAGES val:22 [ 35.398100] BUG: Bad rss-counter state mm:0000000028ba0a63 type:MM_FILEPAGES val:33 [ 35.399130] BUG: Bad rss-counter state mm:0000000028ba0a63 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:25248' (ECDSA) to the list of known hosts. 2023/06/20 02:32:46 fuzzer started 2023/06/20 02:32:46 dialing manager at localhost:44161 2023/06/20 02:32:46 checking machine... 2023/06/20 02:32:46 checking revisions... [ 36.145818] kmemleak: Automatic memory scanning thread ended 2023/06/20 02:32:46 testing simple program... [ 36.183447] cgroup: Unknown subsys name 'net' [ 36.243408] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:32:43 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000002 RCX=ffffffff861375e0 RDX=1ffff1100d9c1358 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff88806ce09ad0 RSP=ffff88806ce09a08 R8 =ffffffff861375e4 R9 =ffff88806ce09ab8 R10=0000000000038001 R11=0000000000020dae R12=ffff88806ce09ad8 R13=ffff88806ce09ac0 R14=0000000000000005 R15=ffff88806ce09a78 RIP=ffffffff81130b54 RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fc36bdac900 00000000 00000000 GS =0000 ffff88806ce00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000001000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007ffea7725000 CR3=000000000b3d8000 CR4=00350ef0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8450c50e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffff888008e27e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=0000000000000001 R12=ffffffff85d3bed0 R13=1ffff110011c4fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8450d49f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 ES =0000 0000000000000000 00000000 00000000 CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA] SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 0000000000000000 00000000 00000000 GS =0000 ffff88806cf00000 00000000 00000000 LDT=0000 fffffe0000000000 00000000 00000000 TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy GDT= fffffe0000048000 0000007f IDT= fffffe0000000000 00000fff CR0=80050033 CR2=00007f879d907fb0 CR3=0000000010038000 CR4=00350ee0 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000d01 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=32333a3230203032206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363936 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000