syzkaller login: [ 30.636259] BUG: Bad rss-counter state mm:000000007d1cf8af type:MM_FILEPAGES val:33 [ 30.637757] BUG: Bad rss-counter state mm:000000007d1cf8af type:MM_ANONPAGES val:22 [ 30.811113] ================================================================== [ 30.812049] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.812981] Read of size 8 at addr ffff88800f1c3880 by task sshd/220 [ 30.813872] [ 30.814097] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.814978] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.815978] Call Trace: [ 30.816305] [ 30.816606] dump_stack_lvl+0x91/0xf0 [ 30.817105] print_report+0xcc/0x620 [ 30.817611] ? __virt_addr_valid+0x102/0x340 [ 30.818190] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.818825] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.819463] kasan_report+0xbe/0xf0 [ 30.819952] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.820578] vma_interval_tree_remove+0xc75/0xec0 [ 30.821184] vma_prepare+0xc54/0x11a0 [ 30.821675] __split_vma+0x5af/0x950 [ 30.822163] ? __pfx___split_vma+0x10/0x10 [ 30.822724] ? find_held_lock+0x2c/0x110 [ 30.823248] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.823837] ? lock_is_held_type+0x9f/0x120 [ 30.824380] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.824986] ? mtree_range_walk+0x632/0x900 [ 30.825545] ? mas_walk+0x5c7/0x7c0 [ 30.826034] do_vmi_munmap+0x1f1/0x2b0 [ 30.826544] mmap_region+0x1f9/0x2660 [ 30.827029] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.827542] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.828249] ? __pfx_lock_acquire+0x10/0x10 [ 30.828785] ? __pfx_mmap_region+0x10/0x10 [ 30.829329] ? security_mmap_addr+0x7d/0xa0 [ 30.829881] ? get_unmapped_area+0x1f5/0x3f0 [ 30.830438] do_mmap+0x854/0xf00 [ 30.830875] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.831372] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.831934] ksys_mmap_pgoff+0x3af/0x500 [ 30.832450] do_syscall_64+0x3f/0x90 [ 30.832927] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.833589] RIP: 0033:0x7f3e8d59dd82 [ 30.834073] 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 [ 30.836233] RSP: 002b:00007ffdd66c5468 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.837142] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3e8d59dd82 [ 30.838001] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3e8c9d7000 [ 30.838861] RBP: 00007f3e8c9d7000 R08: 0000000000000009 R09: 0000000000001000 [ 30.839734] R10: 0000000000000812 R11: 0000000000000206 R12: 0000562dda2e7ec0 [ 30.840593] R13: 00007ffdd66c5480 R14: 00007ffdd66c54b0 R15: 00007ffdd66c5810 [ 30.841491] [ 30.841790] [ 30.842027] Allocated by task 213: [ 30.842448] kasan_save_stack+0x22/0x50 [ 30.842950] kasan_set_track+0x25/0x30 [ 30.843445] __kasan_slab_alloc+0x59/0x70 [ 30.843969] kmem_cache_alloc+0x16b/0x370 [ 30.844487] vm_area_dup+0x20/0x160 [ 30.844940] __split_vma+0x170/0x950 [ 30.845409] split_vma+0xc6/0x110 [ 30.845856] mprotect_fixup+0x8d2/0xb30 [ 30.846356] do_mprotect_pkey+0x87e/0xd40 [ 30.846878] __x64_sys_mprotect+0x78/0xc0 [ 30.847398] do_syscall_64+0x3f/0x90 [ 30.847883] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.848540] [ 30.848758] Freed by task 213: [ 30.849166] kasan_save_stack+0x22/0x50 [ 30.849696] kasan_set_track+0x25/0x30 [ 30.850227] kasan_save_free_info+0x2b/0x50 [ 30.850787] __kasan_slab_free+0x10a/0x190 [ 30.851339] kmem_cache_free+0x10d/0x4d0 [ 30.851861] rcu_core+0x8c8/0x2860 [ 30.852305] __do_softirq+0x1b7/0x7d4 [ 30.852799] [ 30.853017] Last potentially related work creation: [ 30.853628] kasan_save_stack+0x22/0x50 [ 30.854157] __kasan_record_aux_stack+0x8e/0xa0 [ 30.854738] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.855391] remove_vma+0x139/0x170 [ 30.855849] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.856415] do_vmi_munmap+0x1f1/0x2b0 [ 30.856904] __vm_munmap+0x138/0x3a0 [ 30.857382] __x64_sys_munmap+0x59/0x80 [ 30.857895] do_syscall_64+0x3f/0x90 [ 30.858371] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.859034] [ 30.859271] The buggy address belongs to the object at ffff88800f1c3828 [ 30.859271] which belongs to the cache vm_area_struct of size 168 [ 30.860788] The buggy address is located 88 bytes inside of [ 30.860788] freed 168-byte region [ffff88800f1c3828, ffff88800f1c38d0) [ 30.862189] [ 30.862478] The buggy address belongs to the physical page: [ 30.863363] page:00000000977cfaeb refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf1c3 [ 30.864813] memcg:ffff88801809a401 [ 30.865330] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.866042] page_type: 0xffffffff() [ 30.866509] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.867472] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801809a401 [ 30.868444] page dumped because: kasan: bad access detected [ 30.869140] [ 30.869362] Memory state around the buggy address: [ 30.870014] ffff88800f1c3780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 30.870881] ffff88800f1c3800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 30.871737] >ffff88800f1c3880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 30.872605] ^ [ 30.873020] ffff88800f1c3900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.873882] ffff88800f1c3980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 30.874727] ================================================================== [ 30.875709] Disabling lock debugging due to kernel taint [ 33.030151] BUG: Bad rss-counter state mm:00000000c0083bb7 type:MM_FILEPAGES val:33 [ 33.031250] BUG: Bad rss-counter state mm:00000000c0083bb7 type:MM_ANONPAGES val:22 [ 33.619370] BUG: Bad rss-counter state mm:0000000053fbf0d9 type:MM_FILEPAGES val:33 [ 33.620526] BUG: Bad rss-counter state mm:0000000053fbf0d9 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:31093' (ECDSA) to the list of known hosts. 2023/06/20 15:30:51 fuzzer started 2023/06/20 15:30:51 dialing manager at localhost:36067 2023/06/20 15:30:51 checking machine... 2023/06/20 15:30:51 checking revisions... [ 34.244896] kmemleak: Automatic memory scanning thread ended 2023/06/20 15:30:52 testing simple program... [ 34.294990] cgroup: Unknown subsys name 'net' [ 34.333282] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:30:51 Registers: info registers vcpu 0 RAX=ffff888019661aa8 RBX=ffff88800ff80000 RCX=0000000000000001 RDX=0000000000000000 RSI=ffffffff81c619e4 RDI=ffff88800bfa03c0 RBP=0000000000000000 RSP=ffff8880158a78f0 R8 =ffff8880158a78b0 R9 =0000000000000000 R10=ffffffff85d3d357 R11=00000000000b6d53 R12=0000000000000008 R13=0000000000000c40 R14=ffff888019661aa8 R15=ffffffff87f3e160 RIP=ffffffff814c0860 RFL=00000282 [--S----] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f839399c900 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=00007f8392dd4eb0 CR3=000000000f3d6000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=cd0bc1623ebe13f400000000000ae988 XMM05=9d9f933ac33110660000000000132678 XMM06=d0dbd1a132b709e80000000000131418 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff88800ea06f98 RCX=ffffffff86129a01 RDX=1ffff11001d40df3 RSI=0000000000000000 RDI=ffff88800ea06f98 RBP=ffff88800ea07030 RSP=ffff88800ea06f80 R8 =ffffffff86129ab2 R9 =ffff88800ea06fd8 R10=0000000000038001 R11=000000000001e4ed R12=ffff88800ea07060 R13=0000000000000000 R14=ffff88800e903680 R15=0000000000092800 RIP=ffffffff81130368 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 00007f2903068900 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=00007f2903047020 CR3=0000000019f2a000 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