syzkaller login: [ 28.680703] BUG: Bad rss-counter state mm:000000005ae199af type:MM_FILEPAGES val:33 [ 28.682768] BUG: Bad rss-counter state mm:000000005ae199af type:MM_ANONPAGES val:22 [ 28.842042] ================================================================== [ 28.843013] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.844002] Read of size 8 at addr ffff88800fd90310 by task sshd/221 [ 28.844801] [ 28.845027] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.846043] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.847075] Call Trace: [ 28.847404] [ 28.847810] dump_stack_lvl+0x91/0xf0 [ 28.848422] print_report+0xcc/0x620 [ 28.849037] ? __virt_addr_valid+0x102/0x340 [ 28.849753] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.850528] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.851327] kasan_report+0xbe/0xf0 [ 28.851938] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.852629] vma_interval_tree_remove+0xc75/0xec0 [ 28.853281] vma_prepare+0xc54/0x11a0 [ 28.853802] __split_vma+0x5af/0x950 [ 28.854294] ? __pfx___split_vma+0x10/0x10 [ 28.854889] ? find_held_lock+0x2c/0x110 [ 28.855429] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.856058] ? lock_is_held_type+0x9f/0x120 [ 28.856606] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.857214] ? mtree_range_walk+0x632/0x900 [ 28.857792] ? mas_walk+0x5c7/0x7c0 [ 28.858289] do_vmi_munmap+0x1f1/0x2b0 [ 28.858820] mmap_region+0x1f9/0x2660 [ 28.859329] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.859907] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.860690] ? __pfx_lock_acquire+0x10/0x10 [ 28.861256] ? __pfx_mmap_region+0x10/0x10 [ 28.861828] ? security_mmap_addr+0x7d/0xa0 [ 28.862383] ? get_unmapped_area+0x1f5/0x3f0 [ 28.863012] do_mmap+0x854/0xf00 [ 28.863492] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.864029] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.864604] ksys_mmap_pgoff+0x3af/0x500 [ 28.865138] do_syscall_64+0x3f/0x90 [ 28.865626] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.866309] RIP: 0033:0x7fac3adcdd82 [ 28.866796] 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 [ 28.868992] RSP: 002b:00007fff5e2f3448 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.869932] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fac3adcdd82 [ 28.870831] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fac3a207000 [ 28.871768] RBP: 00007fac3a207000 R08: 0000000000000009 R09: 0000000000001000 [ 28.872646] R10: 0000000000000812 R11: 0000000000000206 R12: 000055937643dec0 [ 28.873515] R13: 00007fff5e2f3460 R14: 00007fff5e2f3490 R15: 00007fff5e2f37f0 [ 28.874406] [ 28.874741] [ 28.874960] Allocated by task 214: [ 28.875402] kasan_save_stack+0x22/0x50 [ 28.875962] kasan_set_track+0x25/0x30 [ 28.876484] __kasan_slab_alloc+0x59/0x70 [ 28.877064] kmem_cache_alloc+0x16b/0x370 [ 28.877608] vm_area_dup+0x20/0x160 [ 28.878100] __split_vma+0x170/0x950 [ 28.878603] split_vma+0xc6/0x110 [ 28.879107] mprotect_fixup+0x8d2/0xb30 [ 28.879632] do_mprotect_pkey+0x87e/0xd40 [ 28.880207] __x64_sys_mprotect+0x78/0xc0 [ 28.880763] do_syscall_64+0x3f/0x90 [ 28.881252] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.881937] [ 28.882159] Freed by task 214: [ 28.882565] kasan_save_stack+0x22/0x50 [ 28.883129] kasan_set_track+0x25/0x30 [ 28.883650] kasan_save_free_info+0x2b/0x50 [ 28.884218] __kasan_slab_free+0x10a/0x190 [ 28.884788] kmem_cache_free+0x10d/0x4d0 [ 28.885320] rcu_core+0x8c8/0x2860 [ 28.885829] __do_softirq+0x1b7/0x7d4 [ 28.886467] [ 28.886714] Last potentially related work creation: [ 28.887326] kasan_save_stack+0x22/0x50 [ 28.887854] __kasan_record_aux_stack+0x8e/0xa0 [ 28.888446] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.889112] remove_vma+0x139/0x170 [ 28.889582] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.890163] do_vmi_munmap+0x1f1/0x2b0 [ 28.890688] __vm_munmap+0x138/0x3a0 [ 28.891170] __x64_sys_munmap+0x59/0x80 [ 28.891681] do_syscall_64+0x3f/0x90 [ 28.892188] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.892880] [ 28.893106] The buggy address belongs to the object at ffff88800fd902b8 [ 28.893106] which belongs to the cache vm_area_struct of size 168 [ 28.894708] The buggy address is located 88 bytes inside of [ 28.894708] freed 168-byte region [ffff88800fd902b8, ffff88800fd90360) [ 28.896225] [ 28.896447] The buggy address belongs to the physical page: [ 28.897136] page:00000000b10be087 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfd90 [ 28.898269] memcg:ffff88801a41fb01 [ 28.898717] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.899395] page_type: 0xffffffff() [ 28.899859] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 28.900840] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88801a41fb01 [ 28.901821] page dumped because: kasan: bad access detected [ 28.902530] [ 28.902781] Memory state around the buggy address: [ 28.903407] ffff88800fd90200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 28.904357] ffff88800fd90280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 28.905289] >ffff88800fd90300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 28.906222] ^ [ 28.906744] ffff88800fd90380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 28.907675] ffff88800fd90400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 28.908604] ================================================================== [ 28.909538] Disabling lock debugging due to kernel taint [ 30.806725] BUG: Bad rss-counter state mm:000000007ba4b9d3 type:MM_FILEPAGES val:33 [ 30.807794] BUG: Bad rss-counter state mm:000000007ba4b9d3 type:MM_ANONPAGES val:22 [ 31.349860] BUG: Bad rss-counter state mm:00000000e1ec0259 type:MM_FILEPAGES val:33 [ 31.351068] BUG: Bad rss-counter state mm:00000000e1ec0259 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:12163' (ECDSA) to the list of known hosts. 2023/06/21 02:13:50 fuzzer started 2023/06/21 02:13:50 dialing manager at localhost:36067 2023/06/21 02:13:50 checking machine... 2023/06/21 02:13:50 checking revisions... [ 31.973436] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:13:50 testing simple program... [ 32.024977] cgroup: Unknown subsys name 'net' [ 32.089626] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:13:50 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff8880191efb00 RCX=0000000000000000 RDX=0000000000000000 RSI=0000000000000000 RDI=ffff88806ce3de20 RBP=0000000000000001 RSP=ffff8880191efaf0 R8 =0000000000000001 R9 =0000000000000000 R10=ffffffff85d3d357 R11=00000000000d000c R12=0000000000000000 R13=0000000000000000 R14=ffff88806ce3de20 R15=0000000000000000 RIP=ffffffff812d8e97 RFL=00000086 [--S--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 00007f2c7f8b8900 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=00007f2c7fe6d650 CR3=000000001a450000 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=0000555c1a610e38 RBX=0000555c1a610e00 RCX=0000000000125210 RDX=0000000000000003 RSI=0000555c1a610ff0 RDI=0000555c1a5ffd60 RBP=0000000000000010 RSP=00007ffd8537cbd0 R8 =0000000000000000 R9 =0000000000125210 R10=0000000000000002 R11=00007f4a162034d8 R12=00007ffd8537cc40 R13=0000000000000006 R14=0000000000125210 R15=0000000000000000 RIP=00007f4a17867334 RFL=00000293 [--S-A-C] 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 00007f4a16ce4900 00000000 00000000 GS =0000 0000000000000000 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=00007f4a1615b4e0 CR3=000000000d860000 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=000000000010ce582fccd54c36d8a3f3 XMM01=07b30c61e0d1e6a77946313cfa79535f XMM02=000000000011c408eff9b2d0a8fce9cb XMM03=000000000011c4d82c67c8bc2e329bc3 XMM04=b4534c3d73e7b1cb00000000000ae988 XMM05=97e7926854d135ba0000000000133d90 XMM06=c291bd5c70af25b90000000000132e30 XMM07=e042d86d42eb936e0000000000123b68 XMM08=95a96e10ca35dff9000000000011c4d8 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000