syzkaller login: [ 30.756406] BUG: Bad rss-counter state mm:00000000fbe7abb7 type:MM_FILEPAGES val:33 [ 30.757902] BUG: Bad rss-counter state mm:00000000fbe7abb7 type:MM_ANONPAGES val:22 [ 30.909593] ================================================================== [ 30.910556] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.911463] Read of size 8 at addr ffff88800e00e058 by task sshd/220 [ 30.912299] [ 30.912513] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.913351] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.914314] Call Trace: [ 30.914638] [ 30.914915] dump_stack_lvl+0x91/0xf0 [ 30.915395] print_report+0xcc/0x620 [ 30.915865] ? __virt_addr_valid+0x102/0x340 [ 30.916399] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.916999] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.917598] kasan_report+0xbe/0xf0 [ 30.918073] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.918676] vma_interval_tree_remove+0xc75/0xec0 [ 30.919263] vma_prepare+0xc54/0x11a0 [ 30.919731] __split_vma+0x5af/0x950 [ 30.920189] ? __pfx___split_vma+0x10/0x10 [ 30.920702] ? find_held_lock+0x2c/0x110 [ 30.921211] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.921778] ? lock_is_held_type+0x9f/0x120 [ 30.922307] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.922896] ? mtree_range_walk+0x632/0x900 [ 30.923439] ? mas_walk+0x5c7/0x7c0 [ 30.923905] do_vmi_munmap+0x1f1/0x2b0 [ 30.924387] mmap_region+0x1f9/0x2660 [ 30.924856] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.925357] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.926063] ? __pfx_lock_acquire+0x10/0x10 [ 30.926587] ? __pfx_mmap_region+0x10/0x10 [ 30.927105] ? security_mmap_addr+0x7d/0xa0 [ 30.927623] ? get_unmapped_area+0x1f5/0x3f0 [ 30.928159] do_mmap+0x854/0xf00 [ 30.928587] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.929070] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.929620] ksys_mmap_pgoff+0x3af/0x500 [ 30.930128] do_syscall_64+0x3f/0x90 [ 30.930600] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.931234] RIP: 0033:0x7f588c9d6d82 [ 30.931679] 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 [ 30.933762] RSP: 002b:00007fffac0cda68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.934660] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f588c9d6d82 [ 30.935485] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f588be10000 [ 30.936306] RBP: 00007f588be10000 R08: 0000000000000009 R09: 0000000000001000 [ 30.937128] R10: 0000000000000812 R11: 0000000000000206 R12: 000056480cb19ec0 [ 30.937975] R13: 00007fffac0cda80 R14: 00007fffac0cdab0 R15: 00007fffac0cde10 [ 30.938819] [ 30.939105] [ 30.939314] Allocated by task 213: [ 30.939731] kasan_save_stack+0x22/0x50 [ 30.940226] kasan_set_track+0x25/0x30 [ 30.940707] __kasan_slab_alloc+0x59/0x70 [ 30.941218] kmem_cache_alloc+0x16b/0x370 [ 30.941730] vm_area_dup+0x20/0x160 [ 30.942175] __split_vma+0x170/0x950 [ 30.942632] split_vma+0xc6/0x110 [ 30.943063] mprotect_fixup+0x8d2/0xb30 [ 30.943551] do_mprotect_pkey+0x87e/0xd40 [ 30.944056] __x64_sys_mprotect+0x78/0xc0 [ 30.944565] do_syscall_64+0x3f/0x90 [ 30.945029] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.945656] [ 30.945875] Freed by task 13: [ 30.946256] kasan_save_stack+0x22/0x50 [ 30.946747] kasan_set_track+0x25/0x30 [ 30.947229] kasan_save_free_info+0x2b/0x50 [ 30.947756] __kasan_slab_free+0x10a/0x190 [ 30.948273] kmem_cache_free+0x10d/0x4d0 [ 30.948768] rcu_core+0x8c8/0x2860 [ 30.949200] __do_softirq+0x1b7/0x7d4 [ 30.949668] [ 30.949894] Last potentially related work creation: [ 30.950463] kasan_save_stack+0x22/0x50 [ 30.950955] __kasan_record_aux_stack+0x8e/0xa0 [ 30.951515] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.952144] remove_vma+0x139/0x170 [ 30.952583] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.953129] do_vmi_munmap+0x1f1/0x2b0 [ 30.953602] __vm_munmap+0x138/0x3a0 [ 30.954062] __x64_sys_munmap+0x59/0x80 [ 30.954549] do_syscall_64+0x3f/0x90 [ 30.955012] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.955639] [ 30.955849] Second to last potentially related work creation: [ 30.956516] kasan_save_stack+0x22/0x50 [ 30.957004] __kasan_record_aux_stack+0x8e/0xa0 [ 30.957568] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.958211] remove_vma+0x139/0x170 [ 30.958654] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.959197] do_vmi_munmap+0x1f1/0x2b0 [ 30.959669] mmap_region+0x1f9/0x2660 [ 30.960132] do_mmap+0x854/0xf00 [ 30.960554] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.961031] ksys_mmap_pgoff+0x3af/0x500 [ 30.961620] do_syscall_64+0x3f/0x90 [ 30.962109] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.962757] [ 30.962976] The buggy address belongs to the object at ffff88800e00e000 [ 30.962976] which belongs to the cache vm_area_struct of size 168 [ 30.964448] The buggy address is located 88 bytes inside of [ 30.964448] freed 168-byte region [ffff88800e00e000, ffff88800e00e0a8) [ 30.965882] [ 30.966103] The buggy address belongs to the physical page: [ 30.966761] page:0000000044807e64 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe00e [ 30.967846] memcg:ffff88800dd49601 [ 30.968277] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.968917] page_type: 0xffffffff() [ 30.969370] raw: 0100000000000200 ffff8880087a0c80 ffffea0000389a00 dead000000000004 [ 30.970320] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dd49601 [ 30.971283] page dumped because: kasan: bad access detected [ 30.971923] [ 30.972133] Memory state around the buggy address: [ 30.972720] ffff88800e00df00: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 30.973554] ffff88800e00df80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.974396] >ffff88800e00e000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.975220] ^ [ 30.975927] ffff88800e00e080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 30.976756] ffff88800e00e100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.977580] ================================================================== [ 30.978574] Disabling lock debugging due to kernel taint [ 32.859385] BUG: Bad rss-counter state mm:00000000abf8670e type:MM_FILEPAGES val:33 [ 32.860372] BUG: Bad rss-counter state mm:00000000abf8670e type:MM_ANONPAGES val:22 [ 33.425655] BUG: Bad rss-counter state mm:0000000013cdd491 type:MM_FILEPAGES val:33 [ 33.426831] BUG: Bad rss-counter state mm:0000000013cdd491 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:17717' (ECDSA) to the list of known hosts. 2023/06/21 05:02:01 fuzzer started 2023/06/21 05:02:02 dialing manager at localhost:36067 2023/06/21 05:02:02 checking machine... 2023/06/21 05:02:02 checking revisions... [ 34.169091] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:02:02 testing simple program... [ 34.229156] cgroup: Unknown subsys name 'net' [ 34.286122] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:02:01 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8451250e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=0000000000000001 R12=ffffffff85d3d350 R13=1ffffffff0a80fc7 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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 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=000055652ded63c8 CR3=0000000005482000 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=00007f22e785051000005598f984c790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff88800ef87a70 RCX=0000000000000000 RDX=1ffff11001df0f40 RSI=0000000000000000 RDI=ffff88800ef87a48 RBP=ffff88801643d1c0 RSP=ffff88800ef87988 R8 =0000000000000002 R9 =0000000000000000 R10=ffff88800ef879d8 R11=00000000000b6d7d R12=0000000000000000 R13=ffff88800ef87a00 R14=ffff88801643d1c0 R15=ffff88800ef879d8 RIP=ffffffff81132ab3 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f99681a2700 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=00007ff4e0a0e0d0 CR3=00000000165cc000 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=32303a3530203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323539 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000