syzkaller login: [ 38.728521] BUG: Bad rss-counter state mm:00000000330f91c0 type:MM_FILEPAGES val:33 [ 38.730422] BUG: Bad rss-counter state mm:00000000330f91c0 type:MM_ANONPAGES val:22 [ 38.906279] ================================================================== [ 38.907260] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 38.908275] Read of size 8 at addr ffff88800de78058 by task sshd/219 [ 38.909206] [ 38.909440] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 38.910395] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 38.911582] Call Trace: [ 38.911967] [ 38.912304] dump_stack_lvl+0x91/0xf0 [ 38.912890] print_report+0xcc/0x620 [ 38.913461] ? __virt_addr_valid+0x102/0x340 [ 38.914126] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.914861] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.915591] kasan_report+0xbe/0xf0 [ 38.916153] ? vma_interval_tree_remove+0xc75/0xec0 [ 38.916885] vma_interval_tree_remove+0xc75/0xec0 [ 38.917625] vma_prepare+0xc54/0x11a0 [ 38.918216] __split_vma+0x5af/0x950 [ 38.918724] ? __pfx___split_vma+0x10/0x10 [ 38.919280] ? find_held_lock+0x2c/0x110 [ 38.919842] do_vmi_align_munmap+0x2ba/0x11f0 [ 38.920442] ? lock_is_held_type+0x9f/0x120 [ 38.921015] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 38.921658] ? mtree_range_walk+0x632/0x900 [ 38.922255] ? mas_walk+0x5c7/0x7c0 [ 38.922768] do_vmi_munmap+0x1f1/0x2b0 [ 38.923291] mmap_region+0x1f9/0x2660 [ 38.923813] ? vm_mmap_pgoff+0x15c/0x3a0 [ 38.924359] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 38.925114] ? __pfx_lock_acquire+0x10/0x10 [ 38.925681] ? __pfx_mmap_region+0x10/0x10 [ 38.926267] ? security_mmap_addr+0x7d/0xa0 [ 38.926838] ? get_unmapped_area+0x1f5/0x3f0 [ 38.927424] do_mmap+0x854/0xf00 [ 38.927897] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.928425] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 38.929024] ksys_mmap_pgoff+0x3af/0x500 [ 38.929567] do_syscall_64+0x3f/0x90 [ 38.930085] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.930783] RIP: 0033:0x7f4234b25d82 [ 38.931267] 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 [ 38.933602] RSP: 002b:00007ffc28e127b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 38.934553] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f4234b25d82 [ 38.935442] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f4233f5f000 [ 38.936332] RBP: 00007f4233f5f000 R08: 0000000000000009 R09: 0000000000001000 [ 38.937216] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b63835bec0 [ 38.938119] R13: 00007ffc28e127d0 R14: 00007ffc28e12800 R15: 00007ffc28e12b60 [ 38.939021] [ 38.939331] [ 38.939560] Allocated by task 212: [ 38.940013] kasan_save_stack+0x22/0x50 [ 38.940540] kasan_set_track+0x25/0x30 [ 38.941058] __kasan_slab_alloc+0x59/0x70 [ 38.941609] kmem_cache_alloc+0x16b/0x370 [ 38.942160] vm_area_dup+0x20/0x160 [ 38.942636] __split_vma+0x170/0x950 [ 38.943126] split_vma+0xc6/0x110 [ 38.943585] mprotect_fixup+0x8d2/0xb30 [ 38.944111] do_mprotect_pkey+0x87e/0xd40 [ 38.944654] __x64_sys_mprotect+0x78/0xc0 [ 38.945207] do_syscall_64+0x3f/0x90 [ 38.945723] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.946402] [ 38.946630] Freed by task 212: [ 38.947047] kasan_save_stack+0x22/0x50 [ 38.947575] kasan_set_track+0x25/0x30 [ 38.948091] kasan_save_free_info+0x2b/0x50 [ 38.948644] __kasan_slab_free+0x10a/0x190 [ 38.949201] kmem_cache_free+0x10d/0x4d0 [ 38.949745] rcu_core+0x8c8/0x2860 [ 38.950212] __do_softirq+0x1b7/0x7d4 [ 38.950716] [ 38.950945] Last potentially related work creation: [ 38.951560] kasan_save_stack+0x22/0x50 [ 38.952089] __kasan_record_aux_stack+0x8e/0xa0 [ 38.952699] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.953373] remove_vma+0x139/0x170 [ 38.953863] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.954450] do_vmi_munmap+0x1f1/0x2b0 [ 38.954961] __vm_munmap+0x138/0x3a0 [ 38.955456] __x64_sys_munmap+0x59/0x80 [ 38.955977] do_syscall_64+0x3f/0x90 [ 38.956474] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.957150] [ 38.957378] Second to last potentially related work creation: [ 38.958108] kasan_save_stack+0x22/0x50 [ 38.958641] __kasan_record_aux_stack+0x8e/0xa0 [ 38.959246] __call_rcu_common.constprop.0+0x6a/0xb90 [ 38.959921] remove_vma+0x139/0x170 [ 38.960399] do_vmi_align_munmap+0xd4a/0x11f0 [ 38.960989] do_vmi_munmap+0x1f1/0x2b0 [ 38.961504] mmap_region+0x1f9/0x2660 [ 38.962012] do_mmap+0x854/0xf00 [ 38.962466] vm_mmap_pgoff+0x1a6/0x3a0 [ 38.962980] ksys_mmap_pgoff+0x7d/0x500 [ 38.963507] do_syscall_64+0x3f/0x90 [ 38.964004] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 38.964682] [ 38.964911] The buggy address belongs to the object at ffff88800de78000 [ 38.964911] which belongs to the cache vm_area_struct of size 168 [ 38.966470] The buggy address is located 88 bytes inside of [ 38.966470] freed 168-byte region [ffff88800de78000, ffff88800de780a8) [ 38.967967] [ 38.968195] The buggy address belongs to the physical page: [ 38.968896] page:000000005abd601c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xde78 [ 38.970045] memcg:ffff88800e990f01 [ 38.970495] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 38.971229] page_type: 0xffffffff() [ 38.971706] raw: 0100000000000200 ffff8880087a0c80 ffffea00003a2a00 dead000000000005 [ 38.972673] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e990f01 [ 38.973630] page dumped because: kasan: bad access detected [ 38.974339] [ 38.974565] Memory state around the buggy address: [ 38.975178] ffff88800de77f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 38.976074] ffff88800de77f80: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc [ 38.976974] >ffff88800de78000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.977872] ^ [ 38.978639] ffff88800de78080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 38.979547] ffff88800de78100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 38.980445] ================================================================== [ 38.981742] Disabling lock debugging due to kernel taint [ 40.796821] BUG: Bad rss-counter state mm:000000009dd415a6 type:MM_FILEPAGES val:33 [ 40.798081] BUG: Bad rss-counter state mm:000000009dd415a6 type:MM_ANONPAGES val:22 [ 41.337772] BUG: Bad rss-counter state mm:00000000eb0c34fa type:MM_FILEPAGES val:33 [ 41.338969] BUG: Bad rss-counter state mm:00000000eb0c34fa type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:59918' (ECDSA) to the list of known hosts. 2023/06/21 07:41:14 fuzzer started 2023/06/21 07:41:15 dialing manager at localhost:36067 2023/06/21 07:41:15 checking machine... 2023/06/21 07:41:15 checking revisions... [ 41.999234] kmemleak: Automatic memory scanning thread ended 2023/06/21 07:41:15 testing simple program... [ 42.056449] cgroup: Unknown subsys name 'net' [ 42.111995] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 07:41:14 Registers: info registers vcpu 0 RAX=fffffffffba0a94d RBX=ffffffff85dfdb24 RCX=ffffffff81808487 RDX=0000000000000000 RSI=ffffffff86138712 RDI=ffffffff85dfdb20 RBP=ffffffff85dfdb20 RSP=ffff88806ce099e0 R8 =ffffffff86138712 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=0000000000020c57 R12=ffffffff85dfdb28 R13=ffffffff85dfdb20 R14=ffffffff85dfdb20 R15=dffffc0000000000 RIP=ffffffff8112fc93 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 00007f3493c6b900 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=00007ffc96fd3000 CR3=000000000e108000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 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 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=00007f2bc05ceb20 CR3=000000000caea000 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=2034313a31343a3730203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034313a31343a3730203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000