syzkaller login: [ 28.739360] BUG: Bad rss-counter state mm:00000000fe6e6946 type:MM_FILEPAGES val:33 [ 28.740858] BUG: Bad rss-counter state mm:00000000fe6e6946 type:MM_ANONPAGES val:22 [ 28.906636] ================================================================== [ 28.907783] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.908951] Read of size 8 at addr ffff88800e060058 by task sshd/219 [ 28.909878] [ 28.910099] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.910966] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.911965] Call Trace: [ 28.912294] [ 28.912591] dump_stack_lvl+0x91/0xf0 [ 28.913083] print_report+0xcc/0x620 [ 28.913580] ? __virt_addr_valid+0x102/0x340 [ 28.914157] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.914787] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.915417] kasan_report+0xbe/0xf0 [ 28.915900] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.916546] vma_interval_tree_remove+0xc75/0xec0 [ 28.917158] vma_prepare+0xc54/0x11a0 [ 28.917646] __split_vma+0x5af/0x950 [ 28.918152] ? __pfx___split_vma+0x10/0x10 [ 28.918700] ? find_held_lock+0x2c/0x110 [ 28.919222] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.919799] ? lock_is_held_type+0x9f/0x120 [ 28.920338] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.920950] ? mtree_range_walk+0x632/0x900 [ 28.921514] ? mas_walk+0x5c7/0x7c0 [ 28.922009] do_vmi_munmap+0x1f1/0x2b0 [ 28.922509] mmap_region+0x1f9/0x2660 [ 28.922992] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.923511] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.924222] ? __pfx_lock_acquire+0x10/0x10 [ 28.924769] ? __pfx_mmap_region+0x10/0x10 [ 28.925299] ? security_mmap_addr+0x7d/0xa0 [ 28.925850] ? get_unmapped_area+0x1f5/0x3f0 [ 28.926400] do_mmap+0x854/0xf00 [ 28.926845] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.927356] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.927925] ksys_mmap_pgoff+0x3af/0x500 [ 28.928438] do_syscall_64+0x3f/0x90 [ 28.928919] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.929573] RIP: 0033:0x7f5e184e8d82 [ 28.930058] 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 [ 28.932232] RSP: 002b:00007ffca1876b28 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.933151] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5e184e8d82 [ 28.934039] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5e17922000 [ 28.934910] RBP: 00007f5e17922000 R08: 0000000000000009 R09: 0000000000001000 [ 28.935777] R10: 0000000000000812 R11: 0000000000000206 R12: 0000559a00a38f70 [ 28.936651] R13: 00007ffca1876b40 R14: 00007ffca1876b70 R15: 00007ffca1876ed0 [ 28.937517] [ 28.937816] [ 28.938031] Allocated by task 211: [ 28.938476] kasan_save_stack+0x22/0x50 [ 28.938998] kasan_set_track+0x25/0x30 [ 28.939503] __kasan_slab_alloc+0x59/0x70 [ 28.940030] kmem_cache_alloc+0x16b/0x370 [ 28.940556] vm_area_dup+0x20/0x160 [ 28.941024] __split_vma+0x170/0x950 [ 28.941489] split_vma+0xc6/0x110 [ 28.941951] mprotect_fixup+0x8d2/0xb30 [ 28.942456] do_mprotect_pkey+0x87e/0xd40 [ 28.942977] __x64_sys_mprotect+0x78/0xc0 [ 28.943514] do_syscall_64+0x3f/0x90 [ 28.943995] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.944654] [ 28.944872] Freed by task 211: [ 28.945271] kasan_save_stack+0x22/0x50 [ 28.945799] kasan_set_track+0x25/0x30 [ 28.946300] kasan_save_free_info+0x2b/0x50 [ 28.946841] __kasan_slab_free+0x10a/0x190 [ 28.947385] kmem_cache_free+0x10d/0x4d0 [ 28.947901] rcu_core+0x8c8/0x2860 [ 28.948354] __do_softirq+0x1b7/0x7d4 [ 28.948834] [ 28.949057] Last potentially related work creation: [ 28.949680] kasan_save_stack+0x22/0x50 [ 28.950195] __kasan_record_aux_stack+0x8e/0xa0 [ 28.950789] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.951446] remove_vma+0x139/0x170 [ 28.951914] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.952477] do_vmi_munmap+0x1f1/0x2b0 [ 28.952968] __vm_munmap+0x138/0x3a0 [ 28.953446] __x64_sys_munmap+0x59/0x80 [ 28.953966] do_syscall_64+0x3f/0x90 [ 28.954455] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.955103] [ 28.955317] Second to last potentially related work creation: [ 28.956019] kasan_save_stack+0x22/0x50 [ 28.956524] __kasan_record_aux_stack+0x8e/0xa0 [ 28.957117] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.957802] remove_vma+0x139/0x170 [ 28.958266] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.958831] do_vmi_munmap+0x1f1/0x2b0 [ 28.959332] mmap_region+0x1f9/0x2660 [ 28.959822] do_mmap+0x854/0xf00 [ 28.960271] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.960768] ksys_mmap_pgoff+0x3af/0x500 [ 28.961282] do_syscall_64+0x3f/0x90 [ 28.961794] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.962451] [ 28.962668] The buggy address belongs to the object at ffff88800e060000 [ 28.962668] which belongs to the cache vm_area_struct of size 168 [ 28.964182] The buggy address is located 88 bytes inside of [ 28.964182] freed 168-byte region [ffff88800e060000, ffff88800e0600a8) [ 28.965622] [ 28.965860] The buggy address belongs to the physical page: [ 28.966551] page:0000000039f8ed63 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe060 [ 28.967632] memcg:ffff888013f23101 [ 28.968059] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.968722] page_type: 0xffffffff() [ 28.969185] raw: 0100000000000200 ffff8880087a0c80 ffffea0000364b80 dead000000000002 [ 28.970113] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888013f23101 [ 28.971035] page dumped because: kasan: bad access detected [ 28.971694] [ 28.971913] Memory state around the buggy address: [ 28.972503] ffff88800e05ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.973359] ffff88800e05ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 28.974253] >ffff88800e060000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.975136] ^ [ 28.975875] ffff88800e060080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 28.976737] ffff88800e060100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.977606] ================================================================== [ 28.978597] Disabling lock debugging due to kernel taint [ 30.908591] BUG: Bad rss-counter state mm:00000000520d1aee type:MM_FILEPAGES val:33 [ 30.910101] BUG: Bad rss-counter state mm:00000000520d1aee type:MM_ANONPAGES val:22 [ 31.358129] BUG: Bad rss-counter state mm:00000000d22f3fad type:MM_FILEPAGES val:33 [ 31.359075] BUG: Bad rss-counter state mm:00000000d22f3fad type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:38430' (ECDSA) to the list of known hosts. 2023/06/20 11:41:04 fuzzer started 2023/06/20 11:41:04 dialing manager at localhost:36067 2023/06/20 11:41:04 checking machine... 2023/06/20 11:41:04 checking revisions... [ 32.095139] kmemleak: Automatic memory scanning thread ended 2023/06/20 11:41:04 testing simple program... [ 32.152042] cgroup: Unknown subsys name 'net' [ 32.197521] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:41:04 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=1ffff110028f3ea2 RCX=ffffffff812d8f13 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=0000000000000001 RSP=ffff88801479f500 R8 =0000000000000000 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=0000000000000000 R13=0000000000000000 R14=ffffffff856cd6a0 R15=0000000000000000 RIP=ffffffff812d8f20 RFL=00000247 [---Z-PC] 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 00007fc13a345900 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=00007fc1397d4c90 CR3=00000000145ea000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=52f82ebb717add4d00000000000ae988 XMM05=50314533cd1dd1030000000000133fd8 XMM06=806171799158d9670000000000132dc8 XMM07=fb795ef6d65770560000000000121660 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff813ad720 RBX=0000000000000001 RCX=0000000000000001 RDX=ffff88801a27f801 RSI=ffff88801a27f888 RDI=ffff88801a27f888 RBP=ffff88801a27f840 RSP=ffff88801a27f728 R8 =ffffffff8608a55a R9 =ffff88801a27f828 R10=0000000000038001 R11=0000000000003c0d R12=ffff88801a27f848 R13=ffff88801a27f830 R14=ffff88801a27f890 R15=ffff88801a27f7e8 RIP=ffffffff81131041 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 00007fa3cb89c900 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=00007ffc19b96000 CR3=000000000ebbe000 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=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000