syzkaller login: [ 29.574397] BUG: Bad rss-counter state mm:000000002ed2d3f4 type:MM_FILEPAGES val:33 [ 29.575423] BUG: Bad rss-counter state mm:000000002ed2d3f4 type:MM_ANONPAGES val:22 [ 29.762892] ================================================================== [ 29.763833] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.764754] Read of size 8 at addr ffff88800e1bdd08 by task sshd/220 [ 29.765515] [ 29.765792] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.766670] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.767655] Call Trace: [ 29.767997] [ 29.768284] dump_stack_lvl+0x91/0xf0 [ 29.768780] print_report+0xcc/0x620 [ 29.769266] ? __virt_addr_valid+0x102/0x340 [ 29.769823] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.770438] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.771056] kasan_report+0xbe/0xf0 [ 29.771546] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.772181] vma_interval_tree_remove+0xc75/0xec0 [ 29.772789] vma_prepare+0xc54/0x11a0 [ 29.773272] __split_vma+0x5af/0x950 [ 29.773742] ? __pfx___split_vma+0x10/0x10 [ 29.774271] ? find_held_lock+0x2c/0x110 [ 29.774793] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.775369] ? lock_is_held_type+0x9f/0x120 [ 29.775907] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.776521] ? mtree_range_walk+0x632/0x900 [ 29.777074] ? mas_walk+0x5c7/0x7c0 [ 29.777548] do_vmi_munmap+0x1f1/0x2b0 [ 29.778049] mmap_region+0x1f9/0x2660 [ 29.778539] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.779053] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.779790] ? __pfx_lock_acquire+0x10/0x10 [ 29.780330] ? __pfx_mmap_region+0x10/0x10 [ 29.780870] ? security_mmap_addr+0x7d/0xa0 [ 29.781402] ? get_unmapped_area+0x1f5/0x3f0 [ 29.781957] do_mmap+0x854/0xf00 [ 29.782404] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.782903] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.783478] ksys_mmap_pgoff+0x3af/0x500 [ 29.783997] do_syscall_64+0x3f/0x90 [ 29.784477] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.785130] RIP: 0033:0x7fed8ec9ed82 [ 29.785589] 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 [ 29.787724] RSP: 002b:00007ffcde5c2898 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.788630] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fed8ec9ed82 [ 29.789483] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fed8e0d8000 [ 29.790333] RBP: 00007fed8e0d8000 R08: 0000000000000009 R09: 0000000000001000 [ 29.791176] R10: 0000000000000812 R11: 0000000000000206 R12: 0000555633f2df70 [ 29.792045] R13: 00007ffcde5c28b0 R14: 00007ffcde5c28e0 R15: 00007ffcde5c2c40 [ 29.792908] [ 29.793199] [ 29.793418] Allocated by task 212: [ 29.793851] kasan_save_stack+0x22/0x50 [ 29.794357] kasan_set_track+0x25/0x30 [ 29.794857] __kasan_slab_alloc+0x59/0x70 [ 29.795392] kmem_cache_alloc+0x16b/0x370 [ 29.795915] vm_area_dup+0x20/0x160 [ 29.796380] __split_vma+0x170/0x950 [ 29.796851] split_vma+0xc6/0x110 [ 29.797291] mprotect_fixup+0x8d2/0xb30 [ 29.797796] do_mprotect_pkey+0x87e/0xd40 [ 29.798321] __x64_sys_mprotect+0x78/0xc0 [ 29.798841] do_syscall_64+0x3f/0x90 [ 29.799317] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.799982] [ 29.800202] Freed by task 212: [ 29.800598] kasan_save_stack+0x22/0x50 [ 29.801105] kasan_set_track+0x25/0x30 [ 29.801601] kasan_save_free_info+0x2b/0x50 [ 29.802136] __kasan_slab_free+0x10a/0x190 [ 29.802669] kmem_cache_free+0x10d/0x4d0 [ 29.803181] rcu_core+0x8c8/0x2860 [ 29.803636] __do_softirq+0x1b7/0x7d4 [ 29.804116] [ 29.804332] Last potentially related work creation: [ 29.804922] kasan_save_stack+0x22/0x50 [ 29.805426] __kasan_record_aux_stack+0x8e/0xa0 [ 29.806003] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.806647] remove_vma+0x139/0x170 [ 29.807103] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.807672] do_vmi_munmap+0x1f1/0x2b0 [ 29.808162] __vm_munmap+0x138/0x3a0 [ 29.808632] __x64_sys_munmap+0x59/0x80 [ 29.809133] do_syscall_64+0x3f/0x90 [ 29.809606] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.810255] [ 29.810471] Second to last potentially related work creation: [ 29.811163] kasan_save_stack+0x22/0x50 [ 29.811684] __kasan_record_aux_stack+0x8e/0xa0 [ 29.812264] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.812908] remove_vma+0x139/0x170 [ 29.813361] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.813935] do_vmi_munmap+0x1f1/0x2b0 [ 29.814423] mmap_region+0x1f9/0x2660 [ 29.814904] do_mmap+0x854/0xf00 [ 29.815338] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.815846] ksys_mmap_pgoff+0x3af/0x500 [ 29.816358] do_syscall_64+0x3f/0x90 [ 29.816835] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.817477] [ 29.817693] The buggy address belongs to the object at ffff88800e1bdcb0 [ 29.817693] which belongs to the cache vm_area_struct of size 168 [ 29.819156] The buggy address is located 88 bytes inside of [ 29.819156] freed 168-byte region [ffff88800e1bdcb0, ffff88800e1bdd58) [ 29.820574] [ 29.820791] The buggy address belongs to the physical page: [ 29.821440] page:00000000a12787d3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe1bd [ 29.822514] memcg:ffff88800ce7f001 [ 29.822944] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 29.823652] page_type: 0xffffffff() [ 29.824103] raw: 0100000000000200 ffff88800879fc80 ffffea0000395680 dead000000000007 [ 29.825020] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ce7f001 [ 29.825925] page dumped because: kasan: bad access detected [ 29.826585] [ 29.826804] Memory state around the buggy address: [ 29.827383] ffff88800e1bdc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 29.828237] ffff88800e1bdc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 29.829089] >ffff88800e1bdd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 29.829935] ^ [ 29.830379] ffff88800e1bdd80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.831238] ffff88800e1bde00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 29.832112] ================================================================== [ 29.833120] Disabling lock debugging due to kernel taint [ 31.778830] BUG: Bad rss-counter state mm:0000000092544f22 type:MM_FILEPAGES val:33 [ 31.779860] BUG: Bad rss-counter state mm:0000000092544f22 type:MM_ANONPAGES val:22 [ 32.318845] BUG: Bad rss-counter state mm:000000000fb3a3aa type:MM_FILEPAGES val:33 [ 32.320054] BUG: Bad rss-counter state mm:000000000fb3a3aa type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:45002' (ECDSA) to the list of known hosts. 2023/06/19 19:19:04 fuzzer started 2023/06/19 19:19:05 dialing manager at localhost:44161 2023/06/19 19:19:05 checking machine... 2023/06/19 19:19:05 checking revisions... [ 32.967309] kmemleak: Automatic memory scanning thread ended 2023/06/19 19:19:05 testing simple program... [ 33.018341] cgroup: Unknown subsys name 'net' [ 33.076696] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:19:03 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=00005568fb5bb6f0 RCX=0000000000000000 RDX=0000000000000005 RSI=0000000000008000 RDI=00005568fb5bbc20 RBP=0000000000000000 RSP=00007ffd55cd5e50 R8 =00005568fb5ca2a0 R9 =0000000000000000 R10=00005568faaa5d0c R11=0000000000000246 R12=00005568fb5bbc20 R13=0000000000000005 R14=0000000000008000 R15=00005568fb5c4720 RIP=00007f044b49bed1 RFL=00000202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f044a976900 00000000 00000000 GS =0000 0000000000000000 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=00005568fb5c8644 CR3=00000000164f6000 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=000000000000000000005568faa46060 XMM02=ff000000000000ff0000000000ff0000 XMM03=66207463656e6e6f6373696420646576 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=0d0c0f0e09080b0a0504070601000302 XMM07=00000000000000000000000000000000 XMM08=000a0d732a2e25006c61746166003367 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=00005568fb5a83c8 CR3=0000000017fce000 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=39313a3931203931206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3932325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320323738 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000