syzkaller login: [ 23.732409] BUG: Bad rss-counter state mm:00000000f0e7f790 type:MM_FILEPAGES val:33 [ 23.733571] BUG: Bad rss-counter state mm:00000000f0e7f790 type:MM_ANONPAGES val:22 [ 23.887981] ================================================================== [ 23.888892] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 23.889863] Read of size 8 at addr ffff88800e864968 by task sshd/219 [ 23.890667] [ 23.890887] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 23.891949] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 23.892951] Call Trace: [ 23.893281] [ 23.893590] dump_stack_lvl+0x91/0xf0 [ 23.894087] print_report+0xcc/0x620 [ 23.894572] ? __virt_addr_valid+0x102/0x340 [ 23.895140] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.895774] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.896390] kasan_report+0xbe/0xf0 [ 23.896868] ? vma_interval_tree_remove+0xc75/0xec0 [ 23.897490] vma_interval_tree_remove+0xc75/0xec0 [ 23.898098] vma_prepare+0xc54/0x11a0 [ 23.898590] __split_vma+0x5af/0x950 [ 23.899064] ? __pfx___split_vma+0x10/0x10 [ 23.899601] ? find_held_lock+0x2c/0x110 [ 23.900136] do_vmi_align_munmap+0x2ba/0x11f0 [ 23.900701] ? lock_is_held_type+0x9f/0x120 [ 23.901247] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 23.901860] ? mtree_range_walk+0x632/0x900 [ 23.902421] ? mas_walk+0x5c7/0x7c0 [ 23.902897] do_vmi_munmap+0x1f1/0x2b0 [ 23.903410] mmap_region+0x1f9/0x2660 [ 23.903898] ? vm_mmap_pgoff+0x15c/0x3a0 [ 23.904413] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 23.905124] ? __pfx_lock_acquire+0x10/0x10 [ 23.905657] ? __pfx_mmap_region+0x10/0x10 [ 23.906193] ? security_mmap_addr+0x7d/0xa0 [ 23.906724] ? get_unmapped_area+0x1f5/0x3f0 [ 23.907291] do_mmap+0x854/0xf00 [ 23.907741] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.908246] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 23.908814] ksys_mmap_pgoff+0x3af/0x500 [ 23.909336] do_syscall_64+0x3f/0x90 [ 23.909823] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.910471] RIP: 0033:0x7f13f202dd82 [ 23.910936] 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 [ 23.913088] RSP: 002b:00007fff4a23bc38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 23.914005] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f13f202dd82 [ 23.914853] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f13f1467000 [ 23.915732] RBP: 00007f13f1467000 R08: 0000000000000009 R09: 0000000000001000 [ 23.916579] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ad80a10ec0 [ 23.917466] R13: 00007fff4a23bc50 R14: 00007fff4a23bc80 R15: 00007fff4a23bfe0 [ 23.918367] [ 23.918661] [ 23.918882] Allocated by task 212: [ 23.919339] kasan_save_stack+0x22/0x50 [ 23.919848] kasan_set_track+0x25/0x30 [ 23.920340] __kasan_slab_alloc+0x59/0x70 [ 23.920867] kmem_cache_alloc+0x16b/0x370 [ 23.921390] vm_area_dup+0x20/0x160 [ 23.921847] __split_vma+0x170/0x950 [ 23.922316] split_vma+0xc6/0x110 [ 23.922778] mprotect_fixup+0x8d2/0xb30 [ 23.923289] do_mprotect_pkey+0x87e/0xd40 [ 23.923814] __x64_sys_mprotect+0x78/0xc0 [ 23.924334] do_syscall_64+0x3f/0x90 [ 23.924808] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.925489] [ 23.925706] Freed by task 212: [ 23.926099] kasan_save_stack+0x22/0x50 [ 23.926604] kasan_set_track+0x25/0x30 [ 23.927104] kasan_save_free_info+0x2b/0x50 [ 23.927656] __kasan_slab_free+0x10a/0x190 [ 23.928195] kmem_cache_free+0x10d/0x4d0 [ 23.928716] rcu_core+0x8c8/0x2860 [ 23.929184] __do_softirq+0x1b7/0x7d4 [ 23.929663] [ 23.929882] Last potentially related work creation: [ 23.930464] kasan_save_stack+0x22/0x50 [ 23.930968] __kasan_record_aux_stack+0x8e/0xa0 [ 23.931573] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.932216] remove_vma+0x139/0x170 [ 23.932667] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.933236] do_vmi_munmap+0x1f1/0x2b0 [ 23.933734] __vm_munmap+0x138/0x3a0 [ 23.934208] __x64_sys_munmap+0x59/0x80 [ 23.934705] do_syscall_64+0x3f/0x90 [ 23.935193] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.935866] [ 23.936078] Second to last potentially related work creation: [ 23.936765] kasan_save_stack+0x22/0x50 [ 23.937272] __kasan_record_aux_stack+0x8e/0xa0 [ 23.937885] __call_rcu_common.constprop.0+0x6a/0xb90 [ 23.938533] remove_vma+0x139/0x170 [ 23.938991] do_vmi_align_munmap+0xd4a/0x11f0 [ 23.939580] do_vmi_munmap+0x1f1/0x2b0 [ 23.940064] mmap_region+0x1f9/0x2660 [ 23.940539] do_mmap+0x854/0xf00 [ 23.940976] vm_mmap_pgoff+0x1a6/0x3a0 [ 23.941468] ksys_mmap_pgoff+0x3af/0x500 [ 23.941970] do_syscall_64+0x3f/0x90 [ 23.942442] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 23.943091] [ 23.943335] The buggy address belongs to the object at ffff88800e864910 [ 23.943335] which belongs to the cache vm_area_struct of size 168 [ 23.944823] The buggy address is located 88 bytes inside of [ 23.944823] freed 168-byte region [ffff88800e864910, ffff88800e8649b8) [ 23.946220] [ 23.946437] The buggy address belongs to the physical page: [ 23.947097] page:00000000705b25f8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe864 [ 23.948192] memcg:ffff88800d213f01 [ 23.948624] flags: 0x100000000000200(slab|node=0|zone=1) [ 23.949271] page_type: 0xffffffff() [ 23.949727] raw: 0100000000000200 ffff8880087a0c80 ffffea0000393040 dead000000000008 [ 23.950638] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d213f01 [ 23.951564] page dumped because: kasan: bad access detected [ 23.952236] [ 23.952453] Memory state around the buggy address: [ 23.953031] ffff88800e864800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 23.953895] ffff88800e864880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 23.954748] >ffff88800e864900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 23.955603] ^ [ 23.956395] ffff88800e864980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 23.957258] ffff88800e864a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.958113] ================================================================== [ 23.959115] Disabling lock debugging due to kernel taint [ 25.793320] BUG: Bad rss-counter state mm:00000000b11329ab type:MM_FILEPAGES val:33 [ 25.794047] BUG: Bad rss-counter state mm:00000000b11329ab type:MM_ANONPAGES val:22 [ 26.338328] BUG: Bad rss-counter state mm:000000006b9823d1 type:MM_FILEPAGES val:33 [ 26.339324] BUG: Bad rss-counter state mm:000000006b9823d1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18673' (ECDSA) to the list of known hosts. 2023/06/20 14:32:27 fuzzer started 2023/06/20 14:32:28 dialing manager at localhost:36067 2023/06/20 14:32:28 checking machine... 2023/06/20 14:32:28 checking revisions... [ 27.001141] kmemleak: Automatic memory scanning thread ended 2023/06/20 14:32:28 testing simple program... [ 27.068722] cgroup: Unknown subsys name 'net' [ 27.169713] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 14:32:27 Registers: info registers vcpu 0 RAX=00007ff16832a060 RBX=00007ffec73d2670 RCX=00007ffec73d25e8 RDX=000000000000001b RSI=000000000000002c RDI=00007ff168e10060 RBP=00007ffec73d27a0 RSP=fffffe0000002fd0 R8 =000055f978c4b8c0 R9 =00007ffec73d26a0 R10=000000000000002c R11=0000000000000246 R12=0000000000000000 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff84601260 RFL=00000006 [-----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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007ff16826e900 00000000 00000000 GS =0000 0000000000000000 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=00007ff16832a44c CR3=000000000e2ea000 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=6720646572637465733a4d41503d706f 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 info registers vcpu 1 RAX=0000000080010002 RBX=0000000000000005 RCX=ffffffff813bec33 RDX=ffff888008d951c0 RSI=0000000000000000 RDI=0000000000000001 RBP=ffff88806cf2b940 RSP=ffff88806cf09f00 R8 =0000000000000001 R9 =0000000000000000 R10=0000000000000000 R11=0000001236819ecc R12=0000000000000000 R13=ffff88806cf2b984 R14=0000000000000000 R15=ffff88806cf2b940 RIP=ffffffff814c0860 RFL=00000046 [---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 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=00007ff18c22e3d0 CR3=000000000c996000 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=2037323a32333a3431203032206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037323a32333a3431203032 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000