syzkaller login: [ 38.754660] BUG: Bad rss-counter state mm:0000000099f179e8 type:MM_FILEPAGES val:33 [ 38.756209] BUG: Bad rss-counter state mm:0000000099f179e8 type:MM_ANONPAGES val:22 [ 38.913592] ================================================================== [ 38.914517] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.915467] Read of size 8 at addr ffff88800e35f6b0 by task sshd/218 [ 38.916389] [ 38.916606] CPU: 0 PID: 218 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.917471] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.918460] Call Trace: [ 38.918780] [ 38.919067] dump_stack_lvl+0x91/0xf0 [ 38.919701] print_report+0xcc/0x620 [ 38.920194] ? __virt_addr_valid+0x102/0x340 [ 38.920772] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.921395] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.922009] kasan_report+0xbe/0xf0 [ 38.922490] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.923119] vma_interval_tree_remove+0xc75/0xec0 [ 38.923736] vma_prepare+0xc54/0x11a0 [ 38.924247] __split_vma+0x5af/0x950 [ 38.924719] ? __pfx___split_vma+0x10/0x10 [ 38.925249] ? find_held_lock+0x2c/0x110 [ 38.925775] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.926344] ? lock_is_held_type+0x9f/0x120 [ 38.926886] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.927508] ? mtree_range_walk+0x632/0x900 [ 38.928063] ? mas_walk+0x5c7/0x7c0 [ 38.928602] do_vmi_munmap+0x1f1/0x2b0 [ 38.929110] mmap_region+0x1f9/0x2660 [ 38.929589] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.930103] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.930824] ? __pfx_lock_acquire+0x10/0x10 [ 38.931355] ? __pfx_mmap_region+0x10/0x10 [ 38.931890] ? security_mmap_addr+0x7d/0xa0 [ 38.932442] ? get_unmapped_area+0x1f5/0x3f0 [ 38.932996] do_mmap+0x854/0xf00 [ 38.933435] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.934007] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.934583] ksys_mmap_pgoff+0x3af/0x500 [ 38.935096] do_syscall_64+0x3f/0x90 [ 38.935573] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.936223] RIP: 0033:0x7f3167845d82 [ 38.936690] 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 [ 38.938841] RSP: 002b:00007ffefbac53c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.939778] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3167845d82 [ 38.940646] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3166c7f000 [ 38.941499] RBP: 00007f3166c7f000 R08: 0000000000000009 R09: 0000000000001000 [ 38.942355] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a59e130ec0 [ 38.943273] R13: 00007ffefbac53e0 R14: 00007ffefbac5410 R15: 00007ffefbac5770 [ 38.944139] [ 38.944442] [ 38.944656] Allocated by task 211: [ 38.945092] kasan_save_stack+0x22/0x50 [ 38.945609] kasan_set_track+0x25/0x30 [ 38.946105] __kasan_slab_alloc+0x59/0x70 [ 38.946629] kmem_cache_alloc+0x16b/0x370 [ 38.947156] vm_area_dup+0x20/0x160 [ 38.947613] __split_vma+0x170/0x950 [ 38.948088] split_vma+0xc6/0x110 [ 38.948551] mprotect_fixup+0x8d2/0xb30 [ 38.949098] do_mprotect_pkey+0x87e/0xd40 [ 38.949633] __x64_sys_mprotect+0x78/0xc0 [ 38.950164] do_syscall_64+0x3f/0x90 [ 38.950650] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.951295] [ 38.951511] Freed by task 211: [ 38.951908] kasan_save_stack+0x22/0x50 [ 38.952437] kasan_set_track+0x25/0x30 [ 38.952970] kasan_save_free_info+0x2b/0x50 [ 38.953505] __kasan_slab_free+0x10a/0x190 [ 38.954042] kmem_cache_free+0x10d/0x4d0 [ 38.954552] rcu_core+0x8c8/0x2860 [ 38.955001] __do_softirq+0x1b7/0x7d4 [ 38.955478] [ 38.955696] Last potentially related work creation: [ 38.956302] kasan_save_stack+0x22/0x50 [ 38.956808] __kasan_record_aux_stack+0x8e/0xa0 [ 38.957388] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.958078] remove_vma+0x139/0x170 [ 38.958534] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.959096] do_vmi_munmap+0x1f1/0x2b0 [ 38.959583] __vm_munmap+0x138/0x3a0 [ 38.960055] __x64_sys_munmap+0x59/0x80 [ 38.960565] do_syscall_64+0x3f/0x90 [ 38.961055] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.961696] [ 38.961910] Second to last potentially related work creation: [ 38.962644] kasan_save_stack+0x22/0x50 [ 38.963151] __kasan_record_aux_stack+0x8e/0xa0 [ 38.963721] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.964395] remove_vma+0x139/0x170 [ 38.964862] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.965419] do_vmi_munmap+0x1f1/0x2b0 [ 38.965909] __vm_munmap+0x138/0x3a0 [ 38.966430] elf_map+0x26f/0x310 [ 38.966873] load_elf_binary+0x3417/0x5030 [ 38.967415] bprm_execve+0x803/0x1940 [ 38.967895] do_execveat_common+0x734/0x8e0 [ 38.968429] __x64_sys_execve+0x93/0xc0 [ 38.968932] do_syscall_64+0x3f/0x90 [ 38.969414] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.970076] [ 38.970296] The buggy address belongs to the object at ffff88800e35f658 [ 38.970296] which belongs to the cache vm_area_struct of size 168 [ 38.971886] The buggy address is located 88 bytes inside of [ 38.971886] freed 168-byte region [ffff88800e35f658, ffff88800e35f700) [ 38.973349] [ 38.973572] The buggy address belongs to the physical page: [ 38.974240] page:000000006524d415 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe35f [ 38.975341] memcg:ffff88800e378901 [ 38.975768] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.976535] page_type: 0xffffffff() [ 38.976991] raw: 0100000000000200 ffff8880087a0c80 ffffea000039a400 dead000000000005 [ 38.977914] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e378901 [ 38.978851] page dumped because: kasan: bad access detected [ 38.979551] [ 38.979769] Memory state around the buggy address: [ 38.980374] ffff88800e35f580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.981276] ffff88800e35f600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 38.982141] >ffff88800e35f680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.983008] ^ [ 38.983590] ffff88800e35f700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 38.984539] ffff88800e35f780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 38.985395] ================================================================== [ 38.986383] Disabling lock debugging due to kernel taint [ 40.871894] BUG: Bad rss-counter state mm:0000000007ea2e0e type:MM_FILEPAGES val:33 [ 40.872911] BUG: Bad rss-counter state mm:0000000007ea2e0e type:MM_ANONPAGES val:22 [ 41.358020] BUG: Bad rss-counter state mm:00000000b843be4a type:MM_FILEPAGES val:33 [ 41.359169] BUG: Bad rss-counter state mm:00000000b843be4a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:62748' (ECDSA) to the list of known hosts. 2023/06/20 17:47:43 fuzzer started 2023/06/20 17:47:44 dialing manager at localhost:36067 2023/06/20 17:47:44 checking machine... 2023/06/20 17:47:44 checking revisions... [ 42.062387] kmemleak: Automatic memory scanning thread ended 2023/06/20 17:47:44 testing simple program... [ 42.101810] cgroup: Unknown subsys name 'net' [ 42.219888] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:47:43 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=ffff888008c04000 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=00007f1ee192ec40 CR3=0000000013e5e000 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=edb1bf201547e4823b482b34af7c1fce XMM02=ec2efd57dc4c00df000000000011ad18 XMM03=3b71a5d974d06ef2000000000011ade8 XMM04=876dcbf9f169160700000000000ae988 XMM05=751b9502027dc0b900000000001329e8 XMM06=b4f10b1a75935b9b0000000000131bc0 XMM07=e042d86d42eb936e00000000001219a8 XMM08=3b71a5d974d06ef2000000000011ade8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff8880146b8001 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff8880146b7301 RSI=ffff8880146b7398 RDI=ffff8880146b6fe0 RBP=ffff8880146b7028 RSP=ffff8880146b6f48 R8 =0000000000000001 R9 =ffff8880146b7010 R10=0000000000038001 R11=0000000000020ce4 R12=ffff8880146b7030 R13=ffff8880146b0000 R14=ffff8880146b7398 R15=ffff8880146b6fd0 RIP=ffffffff811304d1 RFL=00000296 [--S-AP-] 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 00007f1a7f100900 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=00007f1a7f0b9008 CR3=000000000fb0a000 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=00000000000000000000000000000000 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