syzkaller login: [ 30.682235] BUG: Bad rss-counter state mm:00000000ab80bfdd type:MM_FILEPAGES val:33 [ 30.683935] BUG: Bad rss-counter state mm:00000000ab80bfdd type:MM_ANONPAGES val:22 [ 30.907592] ================================================================== [ 30.908602] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.909770] Read of size 8 at addr ffff88800e341140 by task sshd/224 [ 30.910637] [ 30.910874] CPU: 1 PID: 224 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.911844] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.912913] Call Trace: [ 30.913263] [ 30.913574] dump_stack_lvl+0x91/0xf0 [ 30.914110] print_report+0xcc/0x620 [ 30.914655] ? __virt_addr_valid+0x102/0x340 [ 30.915266] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.915937] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.916607] kasan_report+0xbe/0xf0 [ 30.917124] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.917795] vma_interval_tree_remove+0xc75/0xec0 [ 30.918466] vma_prepare+0xc54/0x11a0 [ 30.918995] __split_vma+0x5af/0x950 [ 30.919510] ? __pfx___split_vma+0x10/0x10 [ 30.920083] ? find_held_lock+0x2c/0x110 [ 30.920651] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.921260] ? lock_is_held_type+0x9f/0x120 [ 30.921850] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.922524] ? mtree_range_walk+0x632/0x900 [ 30.923117] ? mas_walk+0x5c7/0x7c0 [ 30.923628] do_vmi_munmap+0x1f1/0x2b0 [ 30.924160] mmap_region+0x1f9/0x2660 [ 30.924679] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.925232] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.925997] ? __pfx_lock_acquire+0x10/0x10 [ 30.926584] ? __pfx_mmap_region+0x10/0x10 [ 30.927156] ? security_mmap_addr+0x7d/0xa0 [ 30.927730] ? get_unmapped_area+0x1f5/0x3f0 [ 30.928329] do_mmap+0x854/0xf00 [ 30.928799] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.929334] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.929937] ksys_mmap_pgoff+0x3af/0x500 [ 30.930501] do_syscall_64+0x3f/0x90 [ 30.931019] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.931724] RIP: 0033:0x7fdbdb4e6d82 [ 30.932217] 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 [ 30.934514] RSP: 002b:00007ffe84a0dd08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.935490] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fdbdb4e6d82 [ 30.936396] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fdbda920000 [ 30.937302] RBP: 00007fdbda920000 R08: 0000000000000009 R09: 0000000000001000 [ 30.938217] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559414976b20 [ 30.939136] R13: 00007ffe84a0dd20 R14: 00007ffe84a0dd50 R15: 00007ffe84a0e0b0 [ 30.940058] [ 30.940371] [ 30.940600] Allocated by task 214: [ 30.941057] kasan_save_stack+0x22/0x50 [ 30.941597] kasan_set_track+0x25/0x30 [ 30.942122] __kasan_slab_alloc+0x59/0x70 [ 30.942707] kmem_cache_alloc+0x16b/0x370 [ 30.943260] vm_area_dup+0x20/0x160 [ 30.943741] __split_vma+0x170/0x950 [ 30.944232] split_vma+0xc6/0x110 [ 30.944695] mprotect_fixup+0x8d2/0xb30 [ 30.945225] do_mprotect_pkey+0x87e/0xd40 [ 30.945776] __x64_sys_mprotect+0x78/0xc0 [ 30.946343] do_syscall_64+0x3f/0x90 [ 30.946842] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.947523] [ 30.947750] Freed by task 214: [ 30.948167] kasan_save_stack+0x22/0x50 [ 30.948700] kasan_set_track+0x25/0x30 [ 30.949223] kasan_save_free_info+0x2b/0x50 [ 30.949788] __kasan_slab_free+0x10a/0x190 [ 30.950365] kmem_cache_free+0x10d/0x4d0 [ 30.950969] rcu_core+0x8c8/0x2860 [ 30.951441] __do_softirq+0x1b7/0x7d4 [ 30.951943] [ 30.952172] Last potentially related work creation: [ 30.952795] kasan_save_stack+0x22/0x50 [ 30.953328] __kasan_record_aux_stack+0x8e/0xa0 [ 30.953933] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.954638] remove_vma+0x139/0x170 [ 30.955111] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.955695] do_vmi_munmap+0x1f1/0x2b0 [ 30.956210] __vm_munmap+0x138/0x3a0 [ 30.956701] __x64_sys_munmap+0x59/0x80 [ 30.957231] do_syscall_64+0x3f/0x90 [ 30.957728] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.958414] [ 30.958639] Second to last potentially related work creation: [ 30.959363] kasan_save_stack+0x22/0x50 [ 30.959893] __kasan_record_aux_stack+0x8e/0xa0 [ 30.960499] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.961173] remove_vma+0x139/0x170 [ 30.961647] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.962243] do_vmi_munmap+0x1f1/0x2b0 [ 30.962754] __vm_munmap+0x138/0x3a0 [ 30.963245] elf_map+0x26f/0x310 [ 30.963709] load_elf_binary+0x3417/0x5030 [ 30.964272] bprm_execve+0x803/0x1940 [ 30.964764] do_execveat_common+0x734/0x8e0 [ 30.965312] __x64_sys_execve+0x93/0xc0 [ 30.965824] do_syscall_64+0x3f/0x90 [ 30.966331] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.967003] [ 30.967227] The buggy address belongs to the object at ffff88800e3410e8 [ 30.967227] which belongs to the cache vm_area_struct of size 168 [ 30.968766] The buggy address is located 88 bytes inside of [ 30.968766] freed 168-byte region [ffff88800e3410e8, ffff88800e341190) [ 30.970251] [ 30.970480] The buggy address belongs to the physical page: [ 30.971175] page:00000000a785a79b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe341 [ 30.972310] memcg:ffff88800e2cfb01 [ 30.972755] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.973429] page_type: 0xffffffff() [ 30.973898] raw: 0100000000000200 ffff88800879fc80 ffffea00003956c0 dead000000000006 [ 30.974867] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e2cfb01 [ 30.975809] page dumped because: kasan: bad access detected [ 30.976493] [ 30.976711] Memory state around the buggy address: [ 30.977314] ffff88800e341000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.978202] ffff88800e341080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 30.979115] >ffff88800e341100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.980001] ^ [ 30.980669] ffff88800e341180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.981556] ffff88800e341200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.982448] ================================================================== [ 30.983538] Disabling lock debugging due to kernel taint [ 32.940107] BUG: Bad rss-counter state mm:00000000b35ce01b type:MM_FILEPAGES val:33 [ 32.940739] BUG: Bad rss-counter state mm:00000000b35ce01b type:MM_ANONPAGES val:22 [ 33.385388] BUG: Bad rss-counter state mm:0000000039dd61ac type:MM_FILEPAGES val:33 [ 33.386468] BUG: Bad rss-counter state mm:0000000039dd61ac type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:54719' (ECDSA) to the list of known hosts. 2023/06/19 16:35:29 fuzzer started 2023/06/19 16:35:29 dialing manager at localhost:44161 2023/06/19 16:35:29 checking machine... 2023/06/19 16:35:29 checking revisions... [ 34.106478] kmemleak: Automatic memory scanning thread ended 2023/06/19 16:35:29 testing simple program... [ 34.157621] cgroup: Unknown subsys name 'net' [ 34.217523] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 16:35:27 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff888008d7ff01 RSI=ffff888008d7ff28 RDI=ffff888008d7ff28 RBP=ffff888008d7f9d0 RSP=ffff888008d7f900 R8 =0000000000000001 R9 =ffff888008d7f9b8 R10=0000000000038001 R11=0000000000009bea R12=ffff888008d7f9d8 R13=ffff888008d7f9c0 R14=ffff888008d7ff28 R15=ffff888008d7f978 RIP=ffffffff8112fbf3 RFL=00000202 [-------] 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 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=00007fa0ba233580 CR3=0000000018152000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 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=ffff888008c58400 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=00007f9a26e7c650 CR3=0000000009714000 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=2038323a35333a3631203931206e754a XMM01=73732878696e755f6d6170203a5d3133 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3133325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038323a35333a3631203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000