syzkaller login: [ 26.932211] BUG: Bad rss-counter state mm:00000000d0c950b4 type:MM_FILEPAGES val:33 [ 26.933516] BUG: Bad rss-counter state mm:00000000d0c950b4 type:MM_ANONPAGES val:22 [ 27.086535] ================================================================== [ 27.087622] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 27.088841] Read of size 8 at addr ffff88800dff1058 by task sshd/219 [ 27.089776] [ 27.089995] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 27.090856] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 27.091865] Call Trace: [ 27.092186] [ 27.092472] dump_stack_lvl+0x91/0xf0 [ 27.092960] print_report+0xcc/0x620 [ 27.093468] ? __virt_addr_valid+0x102/0x340 [ 27.094041] ? vma_interval_tree_remove+0xc75/0xec0 [ 27.094660] ? vma_interval_tree_remove+0xc75/0xec0 [ 27.095329] kasan_report+0xbe/0xf0 [ 27.095814] ? vma_interval_tree_remove+0xc75/0xec0 [ 27.096456] vma_interval_tree_remove+0xc75/0xec0 [ 27.097072] vma_prepare+0xc54/0x11a0 [ 27.097573] __split_vma+0x5af/0x950 [ 27.098058] ? __pfx___split_vma+0x10/0x10 [ 27.098600] ? find_held_lock+0x2c/0x110 [ 27.099135] do_vmi_align_munmap+0x2ba/0x11f0 [ 27.099707] ? lock_is_held_type+0x9f/0x120 [ 27.100256] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 27.100873] ? mtree_range_walk+0x632/0x900 [ 27.101456] ? mas_walk+0x5c7/0x7c0 [ 27.101930] do_vmi_munmap+0x1f1/0x2b0 [ 27.102434] mmap_region+0x1f9/0x2660 [ 27.102930] ? vm_mmap_pgoff+0x15c/0x3a0 [ 27.103444] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 27.104166] ? __pfx_lock_acquire+0x10/0x10 [ 27.104699] ? __pfx_mmap_region+0x10/0x10 [ 27.105244] ? security_mmap_addr+0x7d/0xa0 [ 27.105785] ? get_unmapped_area+0x1f5/0x3f0 [ 27.106345] do_mmap+0x854/0xf00 [ 27.106797] vm_mmap_pgoff+0x1a6/0x3a0 [ 27.107301] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 27.107873] ksys_mmap_pgoff+0x3af/0x500 [ 27.108400] do_syscall_64+0x3f/0x90 [ 27.108882] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 27.109562] RIP: 0033:0x7fd8189a2d82 [ 27.110020] 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 [ 27.112166] RSP: 002b:00007ffc8ef8b558 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 27.113077] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd8189a2d82 [ 27.113948] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd817ddc000 [ 27.114813] RBP: 00007fd817ddc000 R08: 0000000000000009 R09: 0000000000001000 [ 27.115673] R10: 0000000000000812 R11: 0000000000000206 R12: 000055a343a39ec0 [ 27.116537] R13: 00007ffc8ef8b570 R14: 00007ffc8ef8b5a0 R15: 00007ffc8ef8b900 [ 27.117422] [ 27.117713] [ 27.117933] Allocated by task 212: [ 27.118370] kasan_save_stack+0x22/0x50 [ 27.118890] kasan_set_track+0x25/0x30 [ 27.119398] __kasan_slab_alloc+0x59/0x70 [ 27.119939] kmem_cache_alloc+0x16b/0x370 [ 27.120470] vm_area_dup+0x20/0x160 [ 27.120930] __split_vma+0x170/0x950 [ 27.121416] split_vma+0xc6/0x110 [ 27.121869] mprotect_fixup+0x8d2/0xb30 [ 27.122384] do_mprotect_pkey+0x87e/0xd40 [ 27.122902] __x64_sys_mprotect+0x78/0xc0 [ 27.123436] do_syscall_64+0x3f/0x90 [ 27.123919] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 27.124572] [ 27.124791] Freed by task 19: [ 27.125186] kasan_save_stack+0x22/0x50 [ 27.125702] kasan_set_track+0x25/0x30 [ 27.126209] kasan_save_free_info+0x2b/0x50 [ 27.126741] __kasan_slab_free+0x10a/0x190 [ 27.127276] kmem_cache_free+0x10d/0x4d0 [ 27.127793] rcu_core+0x8c8/0x2860 [ 27.128244] __do_softirq+0x1b7/0x7d4 [ 27.128724] [ 27.128943] Last potentially related work creation: [ 27.129561] kasan_save_stack+0x22/0x50 [ 27.130081] __kasan_record_aux_stack+0x8e/0xa0 [ 27.130658] __call_rcu_common.constprop.0+0x6a/0xb90 [ 27.131298] remove_vma+0x139/0x170 [ 27.131755] do_vmi_align_munmap+0xd4a/0x11f0 [ 27.132320] do_vmi_munmap+0x1f1/0x2b0 [ 27.132812] __vm_munmap+0x138/0x3a0 [ 27.133303] __x64_sys_munmap+0x59/0x80 [ 27.133797] do_syscall_64+0x3f/0x90 [ 27.134279] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 27.134931] [ 27.135148] Second to last potentially related work creation: [ 27.135830] kasan_save_stack+0x22/0x50 [ 27.136353] __kasan_record_aux_stack+0x8e/0xa0 [ 27.136928] __call_rcu_common.constprop.0+0x6a/0xb90 [ 27.137600] remove_vma+0x139/0x170 [ 27.138057] do_vmi_align_munmap+0xd4a/0x11f0 [ 27.138619] do_vmi_munmap+0x1f1/0x2b0 [ 27.139118] mmap_region+0x1f9/0x2660 [ 27.139597] do_mmap+0x854/0xf00 [ 27.140035] vm_mmap_pgoff+0x1a6/0x3a0 [ 27.140528] ksys_mmap_pgoff+0x3af/0x500 [ 27.141038] do_syscall_64+0x3f/0x90 [ 27.141537] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 27.142193] [ 27.142406] The buggy address belongs to the object at ffff88800dff1000 [ 27.142406] which belongs to the cache vm_area_struct of size 168 [ 27.143879] The buggy address is located 88 bytes inside of [ 27.143879] freed 168-byte region [ffff88800dff1000, ffff88800dff10a8) [ 27.145299] [ 27.145524] The buggy address belongs to the physical page: [ 27.146190] page:00000000ce72b08c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdff1 [ 27.147275] memcg:ffff88800d157301 [ 27.147700] flags: 0x100000000000200(slab|node=0|zone=1) [ 27.148360] page_type: 0xffffffff() [ 27.148812] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 27.149750] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d157301 [ 27.150673] page dumped because: kasan: bad access detected [ 27.151368] [ 27.151582] Memory state around the buggy address: [ 27.152171] ffff88800dff0f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 27.153028] ffff88800dff0f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 27.153900] >ffff88800dff1000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.154761] ^ [ 27.155508] ffff88800dff1080: fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 [ 27.156374] ffff88800dff1100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 27.157261] ================================================================== [ 27.158318] Disabling lock debugging due to kernel taint [ 29.315756] BUG: Bad rss-counter state mm:000000004b802de7 type:MM_FILEPAGES val:33 [ 29.316747] BUG: Bad rss-counter state mm:000000004b802de7 type:MM_ANONPAGES val:22 [ 29.815287] BUG: Bad rss-counter state mm:000000008d30c3aa type:MM_FILEPAGES val:33 [ 29.816298] BUG: Bad rss-counter state mm:000000008d30c3aa type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:16086' (ECDSA) to the list of known hosts. 2023/06/19 15:16:35 fuzzer started 2023/06/19 15:16:35 dialing manager at localhost:44161 2023/06/19 15:16:35 checking machine... 2023/06/19 15:16:35 checking revisions... [ 30.535896] kmemleak: Automatic memory scanning thread ended 2023/06/19 15:16:35 testing simple program... [ 30.585499] cgroup: Unknown subsys name 'net' [ 30.643814] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:16:32 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=ffff88801603f940 RCX=ffffffff863b1c01 RDX=1ffff11002c07f42 RSI=ffffffff84506c7f RDI=ffff88801603f94c RBP=ffff88801603fa10 RSP=ffff88801603f858 R8 =ffffffff863b1c9a R9 =ffff88801603f8b8 R10=0000000000038001 R11=000000000008a977 R12=ffff88801603f940 R13=0000000000000000 R14=ffff888016dad1c0 R15=0000000000092cc0 RIP=ffffffff813ad4f7 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 00007f3208270900 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=00007fffa5fe8000 CR3=000000001a26e000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000080000000 RBX=0000000000000000 RCX=ffffffff818e0186 RDX=ffff88800d9451c0 RSI=0000000000000000 RDI=0000000000000005 RBP=ffff888016e1fbd8 RSP=ffff888016e1fb38 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff88800c607900 R13=0000000000000000 R14=1ffff11002dc3f6a R15=ffff8880193302b0 RIP=ffffffff814c01e1 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 00007fdfa8bdd700 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=00007f330b55ea60 CR3=000000000da8a000 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=2035333a36313a3531203931206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732034333a36313a3531203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000