syzkaller login: [ 28.665403] BUG: Bad rss-counter state mm:0000000040b93fc1 type:MM_FILEPAGES val:33 [ 28.666413] BUG: Bad rss-counter state mm:0000000040b93fc1 type:MM_ANONPAGES val:22 [ 28.839206] ================================================================== [ 28.840331] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.841255] Read of size 8 at addr ffff88800e74e6b0 by task sshd/221 [ 28.842133] [ 28.842353] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.843175] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.844101] Call Trace: [ 28.844427] [ 28.844696] dump_stack_lvl+0x91/0xf0 [ 28.845163] print_report+0xcc/0x620 [ 28.845621] ? __virt_addr_valid+0x102/0x340 [ 28.846145] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.846723] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.847306] kasan_report+0xbe/0xf0 [ 28.847755] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.848351] vma_interval_tree_remove+0xc75/0xec0 [ 28.848998] vma_prepare+0xc54/0x11a0 [ 28.849546] __split_vma+0x5af/0x950 [ 28.850088] ? __pfx___split_vma+0x10/0x10 [ 28.850699] ? find_held_lock+0x2c/0x110 [ 28.851300] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.851976] ? lock_is_held_type+0x9f/0x120 [ 28.852602] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.853305] ? mtree_range_walk+0x632/0x900 [ 28.853938] ? mas_walk+0x5c7/0x7c0 [ 28.854482] do_vmi_munmap+0x1f1/0x2b0 [ 28.855058] mmap_region+0x1f9/0x2660 [ 28.855622] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.856256] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.857095] ? __pfx_lock_acquire+0x10/0x10 [ 28.857720] ? __pfx_mmap_region+0x10/0x10 [ 28.858342] ? security_mmap_addr+0x7d/0xa0 [ 28.858965] ? get_unmapped_area+0x1f5/0x3f0 [ 28.859608] do_mmap+0x854/0xf00 [ 28.860145] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.860725] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.861383] ksys_mmap_pgoff+0x3af/0x500 [ 28.861984] do_syscall_64+0x3f/0x90 [ 28.862546] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.863301] RIP: 0033:0x7fe75e8e5d82 [ 28.863832] 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 [ 28.866334] RSP: 002b:00007ffca2cfb448 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.867395] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe75e8e5d82 [ 28.868397] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe75dd1f000 [ 28.869366] RBP: 00007fe75dd1f000 R08: 0000000000000009 R09: 0000000000001000 [ 28.870342] R10: 0000000000000812 R11: 0000000000000206 R12: 000056352e2a5d90 [ 28.871312] R13: 00007ffca2cfb460 R14: 00007ffca2cfb490 R15: 00007ffca2cfb7f0 [ 28.872313] [ 28.872646] [ 28.872891] Allocated by task 212: [ 28.873380] kasan_save_stack+0x22/0x50 [ 28.873951] kasan_set_track+0x25/0x30 [ 28.874511] __kasan_slab_alloc+0x59/0x70 [ 28.875110] kmem_cache_alloc+0x16b/0x370 [ 28.875691] vm_area_dup+0x20/0x160 [ 28.876222] __split_vma+0x170/0x950 [ 28.876754] split_vma+0xc6/0x110 [ 28.877255] mprotect_fixup+0x8d2/0xb30 [ 28.877825] do_mprotect_pkey+0x87e/0xd40 [ 28.878421] __x64_sys_mprotect+0x78/0xc0 [ 28.879018] do_syscall_64+0x3f/0x90 [ 28.879571] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.880334] [ 28.880578] Freed by task 19: [ 28.881020] kasan_save_stack+0x22/0x50 [ 28.881604] kasan_set_track+0x25/0x30 [ 28.882165] kasan_save_free_info+0x2b/0x50 [ 28.882781] __kasan_slab_free+0x10a/0x190 [ 28.883395] kmem_cache_free+0x10d/0x4d0 [ 28.883986] rcu_core+0x8c8/0x2860 [ 28.884493] __do_softirq+0x1b7/0x7d4 [ 28.885043] [ 28.885283] Last potentially related work creation: [ 28.885973] kasan_save_stack+0x22/0x50 [ 28.886557] __kasan_record_aux_stack+0x8e/0xa0 [ 28.887222] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.887994] remove_vma+0x139/0x170 [ 28.888519] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.889171] do_vmi_munmap+0x1f1/0x2b0 [ 28.889735] __vm_munmap+0x138/0x3a0 [ 28.890280] __x64_sys_munmap+0x59/0x80 [ 28.890866] do_syscall_64+0x3f/0x90 [ 28.891421] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.892179] [ 28.892426] The buggy address belongs to the object at ffff88800e74e658 [ 28.892426] which belongs to the cache vm_area_struct of size 168 [ 28.894171] The buggy address is located 88 bytes inside of [ 28.894171] freed 168-byte region [ffff88800e74e658, ffff88800e74e700) [ 28.895818] [ 28.896083] The buggy address belongs to the physical page: [ 28.896849] page:00000000862646f0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe74e [ 28.898133] memcg:ffff88800ec83201 [ 28.898639] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.899385] page_type: 0xffffffff() [ 28.899934] raw: 0100000000000200 ffff8880087a0c80 ffffea000056c6c0 dead000000000008 [ 28.901034] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ec83201 [ 28.902120] page dumped because: kasan: bad access detected [ 28.902903] [ 28.903158] Memory state around the buggy address: [ 28.903857] ffff88800e74e580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.904876] ffff88800e74e600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 28.905894] >ffff88800e74e680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.906900] ^ [ 28.907589] ffff88800e74e700: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 28.908629] ffff88800e74e780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 28.909640] ================================================================== [ 28.910970] Disabling lock debugging due to kernel taint [ 31.338056] BUG: Bad rss-counter state mm:00000000585223d2 type:MM_FILEPAGES val:33 [ 31.339202] BUG: Bad rss-counter state mm:00000000585223d2 type:MM_ANONPAGES val:22 [ 31.829708] BUG: Bad rss-counter state mm:00000000e84a9140 type:MM_FILEPAGES val:33 [ 31.830682] BUG: Bad rss-counter state mm:00000000e84a9140 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18339' (ECDSA) to the list of known hosts. 2023/06/21 02:44:15 fuzzer started 2023/06/21 02:44:15 dialing manager at localhost:36067 2023/06/21 02:44:15 checking machine... 2023/06/21 02:44:15 checking revisions... [ 32.437400] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:44:15 testing simple program... [ 32.489003] cgroup: Unknown subsys name 'net' [ 32.529937] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:44:15 Registers: info registers vcpu 0 RAX=0000000000038000 RBX=0000000000000001 RCX=ffffffff81846193 RDX=dffffc0000000000 RSI=0000000000008461 RDI=ffff888010237620 RBP=ffff888010237678 RSP=ffff8880102375b0 R8 =ffffffff860d825a R9 =ffff888010237660 R10=0000000000038001 R11=0000000000010b8d R12=ffff888010237680 R13=ffff888010237668 R14=ffff888010237661 R15=ffff888010237620 RIP=ffffffff81130754 RFL=00000283 [--S---C] 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 00007fb2d0835900 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=00007fb2cfca8e20 CR3=000000000c75e000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=66207463656e6e6f6373696420646576 XMM04=efd8e55ffa98bc9a00000000000ae988 XMM05=1319e678c5640f8a0000000000132388 XMM06=e8008b1642ea3e6000000000001322f0 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff11002887685 RBX=ffff88801443b3f8 RCX=ffffffff812e0135 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88801443b428 RBP=ffff8880142b8000 RSP=ffff888008e37cb8 R8 =0000000000000001 R9 =ffffed10011c6f8b R10=0000000000000003 R11=0000000000000128 R12=dffffc0000000000 R13=ffff8880142a2178 R14=ffffffff813782f8 R15=ffff88800d97ab00 RIP=ffffffff818464ec RFL=00000046 [---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 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=00007f590aa78618 CR3=000000000d5a8000 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=34343a3230203132206e754a3e38333c XMM01=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732034313a3434 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320303636 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000