syzkaller login: [ 30.889594] BUG: Bad rss-counter state mm:0000000053a1fb9a type:MM_FILEPAGES val:33 [ 30.890749] BUG: Bad rss-counter state mm:0000000053a1fb9a type:MM_ANONPAGES val:22 [ 30.937173] ================================================================== [ 30.938037] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.938923] Read of size 8 at addr ffff88800fdb96b0 by task sshd/220 [ 30.939645] [ 30.939875] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.940679] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.941601] Call Trace: [ 30.941910] [ 30.942179] dump_stack_lvl+0x91/0xf0 [ 30.942640] print_report+0xcc/0x620 [ 30.943093] ? __virt_addr_valid+0x102/0x340 [ 30.943614] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.944209] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.944791] kasan_report+0xbe/0xf0 [ 30.945242] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.945826] vma_interval_tree_remove+0xc75/0xec0 [ 30.946398] vma_prepare+0xc54/0x11a0 [ 30.946867] __split_vma+0x5af/0x950 [ 30.947336] ? __pfx___split_vma+0x10/0x10 [ 30.947874] ? find_held_lock+0x2c/0x110 [ 30.948403] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.948973] ? lock_is_held_type+0x9f/0x120 [ 30.949497] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.950095] ? mtree_range_walk+0x632/0x900 [ 30.950641] ? mas_walk+0x5c7/0x7c0 [ 30.951098] do_vmi_munmap+0x1f1/0x2b0 [ 30.951588] mmap_region+0x1f9/0x2660 [ 30.952085] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.952598] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.953312] ? __pfx_lock_acquire+0x10/0x10 [ 30.953842] ? __pfx_mmap_region+0x10/0x10 [ 30.954372] ? security_mmap_addr+0x7d/0xa0 [ 30.954899] ? get_unmapped_area+0x1f5/0x3f0 [ 30.955449] do_mmap+0x854/0xf00 [ 30.955892] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.956380] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.956936] ksys_mmap_pgoff+0x3af/0x500 [ 30.957440] do_syscall_64+0x3f/0x90 [ 30.957921] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.958567] RIP: 0033:0x7fdc5c479d82 [ 30.959025] 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 [ 30.961148] RSP: 002b:00007ffe9075b128 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.962040] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fdc5c479d82 [ 30.962885] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fdc5b8b3000 [ 30.963741] RBP: 00007fdc5b8b3000 R08: 0000000000000009 R09: 0000000000001000 [ 30.964581] R10: 0000000000000812 R11: 0000000000000206 R12: 00005567d94cdec0 [ 30.965419] R13: 00007ffe9075b140 R14: 00007ffe9075b170 R15: 00007ffe9075b4d0 [ 30.966276] [ 30.966565] [ 30.966778] Allocated by task 213: [ 30.967194] kasan_save_stack+0x22/0x50 [ 30.967704] kasan_set_track+0x25/0x30 [ 30.968198] __kasan_slab_alloc+0x59/0x70 [ 30.968728] kmem_cache_alloc+0x16b/0x370 [ 30.969238] vm_area_dup+0x20/0x160 [ 30.969695] __split_vma+0x170/0x950 [ 30.970165] split_vma+0xc6/0x110 [ 30.970603] mprotect_fixup+0x8d2/0xb30 [ 30.971104] do_mprotect_pkey+0x87e/0xd40 [ 30.971619] __x64_sys_mprotect+0x78/0xc0 [ 30.972154] do_syscall_64+0x3f/0x90 [ 30.972633] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.973257] [ 30.973475] Freed by task 213: [ 30.973873] kasan_save_stack+0x22/0x50 [ 30.974368] kasan_set_track+0x25/0x30 [ 30.974870] kasan_save_free_info+0x2b/0x50 [ 30.975408] __kasan_slab_free+0x10a/0x190 [ 30.975946] kmem_cache_free+0x10d/0x4d0 [ 30.976461] rcu_core+0x8c8/0x2860 [ 30.976957] __do_softirq+0x1b7/0x7d4 [ 30.977434] [ 30.977647] Last potentially related work creation: [ 30.978238] kasan_save_stack+0x22/0x50 [ 30.978731] __kasan_record_aux_stack+0x8e/0xa0 [ 30.979293] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.979959] remove_vma+0x139/0x170 [ 30.980415] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.980975] do_vmi_munmap+0x1f1/0x2b0 [ 30.981466] __vm_munmap+0x138/0x3a0 [ 30.981938] __x64_sys_munmap+0x59/0x80 [ 30.982430] do_syscall_64+0x3f/0x90 [ 30.982899] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.983546] [ 30.983767] The buggy address belongs to the object at ffff88800fdb9658 [ 30.983767] which belongs to the cache vm_area_struct of size 168 [ 30.985230] The buggy address is located 88 bytes inside of [ 30.985230] freed 168-byte region [ffff88800fdb9658, ffff88800fdb9700) [ 30.986640] [ 30.986859] The buggy address belongs to the physical page: [ 30.987523] page:00000000736dc6f4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xfdb9 [ 30.988616] memcg:ffff888019762601 [ 30.989043] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.989684] page_type: 0xffffffff() [ 30.990130] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.991048] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888019762601 [ 30.991968] page dumped because: kasan: bad access detected [ 30.992623] [ 30.992838] Memory state around the buggy address: [ 30.993412] ffff88800fdb9580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.994253] ffff88800fdb9600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.995100] >ffff88800fdb9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.995960] ^ [ 30.996535] ffff88800fdb9700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.997384] ffff88800fdb9780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.998225] ================================================================== [ 30.999190] Disabling lock debugging due to kernel taint [ 33.761560] BUG: Bad rss-counter state mm:00000000d3c30c78 type:MM_FILEPAGES val:33 [ 33.762733] BUG: Bad rss-counter state mm:00000000d3c30c78 type:MM_ANONPAGES val:22 [ 34.199848] BUG: Bad rss-counter state mm:00000000711400ce type:MM_FILEPAGES val:33 [ 34.201043] BUG: Bad rss-counter state mm:00000000711400ce type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:49732' (ECDSA) to the list of known hosts. 2023/06/19 18:54:13 fuzzer started 2023/06/19 18:54:13 dialing manager at localhost:44161 2023/06/19 18:54:13 checking machine... 2023/06/19 18:54:13 checking revisions... [ 34.826423] kmemleak: Automatic memory scanning thread ended 2023/06/19 18:54:13 testing simple program... [ 34.880264] cgroup: Unknown subsys name 'net' [ 34.928106] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:54:13 Registers: info registers vcpu 0 RAX=ffff888016588001 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff888016587c01 RSI=ffff888016587c80 RDI=ffff888016587c80 RBP=ffff8880165875a0 RSP=ffff8880165874d0 R8 =0000000000000001 R9 =ffff888016587588 R10=0000000000038001 R11=000000000008a85c R12=ffff8880165875a8 R13=ffff888016587590 R14=ffff888016587c80 R15=ffff888016587548 RIP=ffffffff8112fbf0 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 00007f6646f4a700 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=00007ffdfb02f000 CR3=000000000e8c2000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3932325b646873732033313a3435 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320343432 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 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=00007fddcef3a6f0 CR3=0000000008db0000 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=1116cae5892efdb71e48410562a62f29 XMM02=2c67c8bc2e329bc3000000000011d9c8 XMM03=fb795ef6d65770560000000000124400 XMM04=cb88e738178168c900000000000ae988 XMM05=4a714d51c8ec8e550000000000134758 XMM06=4fda316b135da52b0000000000134150 XMM07=e042d86d42eb936e0000000000124680 XMM08=9edb05832566b7df000000000011da28 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000