syzkaller login: [ 32.432167] BUG: Bad rss-counter state mm:000000001c0665c5 type:MM_FILEPAGES val:33 [ 32.433839] BUG: Bad rss-counter state mm:000000001c0665c5 type:MM_ANONPAGES val:22 [ 32.536583] ================================================================== [ 32.537095] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 32.537624] Read of size 8 at addr ffff888014597968 by task sshd/220 [ 32.538060] [ 32.538184] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 32.538662] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 32.539206] Call Trace: [ 32.539387] [ 32.539546] dump_stack_lvl+0x91/0xf0 [ 32.539822] print_report+0xcc/0x620 [ 32.540096] ? __virt_addr_valid+0x102/0x340 [ 32.540413] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.540756] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.541100] kasan_report+0xbe/0xf0 [ 32.541370] ? vma_interval_tree_remove+0xc75/0xec0 [ 32.541714] vma_interval_tree_remove+0xc75/0xec0 [ 32.542186] vma_prepare+0xc54/0x11a0 [ 32.542463] __split_vma+0x5af/0x950 [ 32.542727] ? __pfx___split_vma+0x10/0x10 [ 32.543021] ? find_held_lock+0x2c/0x110 [ 32.543309] do_vmi_align_munmap+0x2ba/0x11f0 [ 32.543625] ? lock_is_held_type+0x9f/0x120 [ 32.543926] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 32.544274] ? mtree_range_walk+0x632/0x900 [ 32.544583] ? mas_walk+0x5c7/0x7c0 [ 32.544847] do_vmi_munmap+0x1f1/0x2b0 [ 32.545124] mmap_region+0x1f9/0x2660 [ 32.545399] ? vm_mmap_pgoff+0x15c/0x3a0 [ 32.545701] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 32.546135] ? __pfx_lock_acquire+0x10/0x10 [ 32.546465] ? __pfx_mmap_region+0x10/0x10 [ 32.546779] ? security_mmap_addr+0x7d/0xa0 [ 32.547092] ? get_unmapped_area+0x1f5/0x3f0 [ 32.547425] do_mmap+0x854/0xf00 [ 32.547683] vm_mmap_pgoff+0x1a6/0x3a0 [ 32.547967] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 32.548297] ksys_mmap_pgoff+0x3af/0x500 [ 32.548601] do_syscall_64+0x3f/0x90 [ 32.548887] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.549275] RIP: 0033:0x7fd282f20d82 [ 32.549551] 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 [ 32.550836] RSP: 002b:00007ffd091f3ed8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 32.551372] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd282f20d82 [ 32.551884] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd28235a000 [ 32.552387] RBP: 00007fd28235a000 R08: 0000000000000009 R09: 0000000000001000 [ 32.552893] R10: 0000000000000812 R11: 0000000000000206 R12: 00005651f5908980 [ 32.553407] R13: 00007ffd091f3ef0 R14: 00007ffd091f3f20 R15: 00007ffd091f4280 [ 32.553911] [ 32.554091] [ 32.554219] Allocated by task 213: [ 32.554484] kasan_save_stack+0x22/0x50 [ 32.554787] kasan_set_track+0x25/0x30 [ 32.555078] __kasan_slab_alloc+0x59/0x70 [ 32.555388] kmem_cache_alloc+0x16b/0x370 [ 32.555693] vm_area_dup+0x20/0x160 [ 32.555957] __split_vma+0x170/0x950 [ 32.556236] split_vma+0xc6/0x110 [ 32.556498] mprotect_fixup+0x8d2/0xb30 [ 32.556804] do_mprotect_pkey+0x87e/0xd40 [ 32.557109] __x64_sys_mprotect+0x78/0xc0 [ 32.557426] do_syscall_64+0x3f/0x90 [ 32.557700] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.558078] [ 32.558205] Freed by task 209: [ 32.558437] kasan_save_stack+0x22/0x50 [ 32.558735] kasan_set_track+0x25/0x30 [ 32.559021] kasan_save_free_info+0x2b/0x50 [ 32.559339] __kasan_slab_free+0x10a/0x190 [ 32.559652] kmem_cache_free+0x10d/0x4d0 [ 32.559956] rcu_core+0x8c8/0x2860 [ 32.560221] __do_softirq+0x1b7/0x7d4 [ 32.560505] [ 32.560637] Last potentially related work creation: [ 32.560989] kasan_save_stack+0x22/0x50 [ 32.561288] __kasan_record_aux_stack+0x8e/0xa0 [ 32.561625] __call_rcu_common.constprop.0+0x6a/0xb90 [ 32.562008] remove_vma+0x139/0x170 [ 32.562270] do_vmi_align_munmap+0xd4a/0x11f0 [ 32.562596] do_vmi_munmap+0x1f1/0x2b0 [ 32.562887] __vm_munmap+0x138/0x3a0 [ 32.563148] __x64_sys_munmap+0x59/0x80 [ 32.563454] do_syscall_64+0x3f/0x90 [ 32.563742] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 32.564114] [ 32.564239] The buggy address belongs to the object at ffff888014597910 [ 32.564239] which belongs to the cache vm_area_struct of size 168 [ 32.565129] The buggy address is located 88 bytes inside of [ 32.565129] freed 168-byte region [ffff888014597910, ffff8880145979b8) [ 32.565979] [ 32.566104] The buggy address belongs to the physical page: [ 32.566502] page:00000000d1a7e0f6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x14597 [ 32.567144] memcg:ffff888015d5c201 [ 32.567397] flags: 0x100000000000200(slab|node=0|zone=1) [ 32.567775] page_type: 0xffffffff() [ 32.568041] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 32.568594] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888015d5c201 [ 32.569131] page dumped because: kasan: bad access detected [ 32.569522] [ 32.569649] Memory state around the buggy address: [ 32.569996] ffff888014597800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 32.570524] ffff888014597880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 32.571024] >ffff888014597900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.571530] ^ [ 32.571991] ffff888014597980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 32.572514] ffff888014597a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 32.573031] ================================================================== [ 32.573637] Disabling lock debugging due to kernel taint [ 34.391103] BUG: Bad rss-counter state mm:00000000e327fbec type:MM_FILEPAGES val:33 [ 34.392143] BUG: Bad rss-counter state mm:00000000e327fbec type:MM_ANONPAGES val:22 [ 34.891889] BUG: Bad rss-counter state mm:000000008715d67b type:MM_FILEPAGES val:33 [ 34.893275] BUG: Bad rss-counter state mm:000000008715d67b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:28892' (ECDSA) to the list of known hosts. 2023/06/19 12:58:13 fuzzer started 2023/06/19 12:58:14 dialing manager at localhost:44161 2023/06/19 12:58:14 checking machine... 2023/06/19 12:58:14 checking revisions... [ 35.632593] kmemleak: Automatic memory scanning thread ended 2023/06/19 12:58:14 testing simple program... [ 35.691445] cgroup: Unknown subsys name 'net' [ 35.734535] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:58:11 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 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 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=00007fd37f5f0fd0 CR3=0000000008ed4000 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=c4d19dd31737f192a1455e5ef92376d4 XMM02=ec2efd57dc4c00df000000000011fc70 XMM03=2a246aeb868db086000000000011fd40 XMM04=0a89443c8fd788e700000000000ae988 XMM05=19e9129bd510f2350000000000133f18 XMM06=c5a976df79ff2d4e0000000000132d80 XMM07=e042d86d42eb936e00000000001245f0 XMM08=2a246aeb868db086000000000011fd40 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800fcf9000 RCX=0000000000000000 RDX=ffff888016911b40 RSI=ffffffff838668e7 RDI=0000000000000005 RBP=ffff888008fc7400 RSP=ffff888016bffaa8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=6873733d6c616e69 R12=0000000000000000 R13=ffff88800ce7e100 R14=0000000000000090 R15=0000000000000001 RIP=ffffffff814c081b 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 00007fbfeb18b900 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=00007ffd93aa1fe8 CR3=0000000017892000 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=6720646572637465733a4d41503d706f XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000