syzkaller login: [ 30.855713] BUG: Bad rss-counter state mm:00000000c4cf0778 type:MM_FILEPAGES val:33 [ 30.857073] BUG: Bad rss-counter state mm:00000000c4cf0778 type:MM_ANONPAGES val:22 [ 30.893180] ================================================================== [ 30.894133] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.895082] Read of size 8 at addr ffff888016738798 by task sshd/220 [ 30.895868] [ 30.896091] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.896961] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.897976] Call Trace: [ 30.898306] [ 30.898598] dump_stack_lvl+0x91/0xf0 [ 30.899130] print_report+0xcc/0x620 [ 30.899623] ? __virt_addr_valid+0x102/0x340 [ 30.900179] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.900809] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.901443] kasan_report+0xbe/0xf0 [ 30.901936] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.902565] vma_interval_tree_remove+0xc75/0xec0 [ 30.903184] vma_prepare+0xc54/0x11a0 [ 30.903667] __split_vma+0x5af/0x950 [ 30.904151] ? __pfx___split_vma+0x10/0x10 [ 30.904726] ? find_held_lock+0x2c/0x110 [ 30.905305] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.905875] ? lock_is_held_type+0x9f/0x120 [ 30.906457] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.907092] ? mtree_range_walk+0x632/0x900 [ 30.907683] ? mas_walk+0x5c7/0x7c0 [ 30.908177] do_vmi_munmap+0x1f1/0x2b0 [ 30.908737] mmap_region+0x1f9/0x2660 [ 30.909283] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.909813] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.910570] ? __pfx_lock_acquire+0x10/0x10 [ 30.911117] ? __pfx_mmap_region+0x10/0x10 [ 30.911697] ? security_mmap_addr+0x7d/0xa0 [ 30.912294] ? get_unmapped_area+0x1f5/0x3f0 [ 30.912866] do_mmap+0x854/0xf00 [ 30.913319] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.913815] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.914392] ksys_mmap_pgoff+0x3af/0x500 [ 30.914904] do_syscall_64+0x3f/0x90 [ 30.915388] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.916043] RIP: 0033:0x7f12d302dd82 [ 30.916503] 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 [ 30.918717] RSP: 002b:00007ffc46170128 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.919815] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f12d302dd82 [ 30.920719] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f12d2467000 [ 30.921583] RBP: 00007f12d2467000 R08: 0000000000000009 R09: 0000000000001000 [ 30.922522] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c5b2b02ec0 [ 30.923383] R13: 00007ffc46170140 R14: 00007ffc46170170 R15: 00007ffc461704d0 [ 30.924261] [ 30.924554] [ 30.924776] Allocated by task 213: [ 30.925226] kasan_save_stack+0x22/0x50 [ 30.925748] kasan_set_track+0x25/0x30 [ 30.926265] __kasan_slab_alloc+0x59/0x70 [ 30.926793] kmem_cache_alloc+0x16b/0x370 [ 30.927322] vm_area_dup+0x20/0x160 [ 30.927789] __split_vma+0x170/0x950 [ 30.928259] split_vma+0xc6/0x110 [ 30.928705] mprotect_fixup+0x8d2/0xb30 [ 30.929243] do_mprotect_pkey+0x87e/0xd40 [ 30.929777] __x64_sys_mprotect+0x78/0xc0 [ 30.930299] do_syscall_64+0x3f/0x90 [ 30.930778] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.931429] [ 30.931649] Freed by task 213: [ 30.932060] kasan_save_stack+0x22/0x50 [ 30.932585] kasan_set_track+0x25/0x30 [ 30.933103] kasan_save_free_info+0x2b/0x50 [ 30.933638] __kasan_slab_free+0x10a/0x190 [ 30.934184] kmem_cache_free+0x10d/0x4d0 [ 30.934705] rcu_core+0x8c8/0x2860 [ 30.935160] __do_softirq+0x1b7/0x7d4 [ 30.935641] [ 30.935859] Last potentially related work creation: [ 30.936463] kasan_save_stack+0x22/0x50 [ 30.936982] __kasan_record_aux_stack+0x8e/0xa0 [ 30.937602] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.938251] remove_vma+0x139/0x170 [ 30.938711] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.939278] do_vmi_munmap+0x1f1/0x2b0 [ 30.939783] __vm_munmap+0x138/0x3a0 [ 30.940256] __x64_sys_munmap+0x59/0x80 [ 30.940766] do_syscall_64+0x3f/0x90 [ 30.941277] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.941922] [ 30.942138] Second to last potentially related work creation: [ 30.942834] kasan_save_stack+0x22/0x50 [ 30.943345] __kasan_record_aux_stack+0x8e/0xa0 [ 30.943934] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.944589] remove_vma+0x139/0x170 [ 30.945051] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.945621] do_vmi_munmap+0x1f1/0x2b0 [ 30.946110] mmap_region+0x1f9/0x2660 [ 30.946647] do_mmap+0x854/0xf00 [ 30.947091] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.947589] ksys_mmap_pgoff+0x3af/0x500 [ 30.948104] do_syscall_64+0x3f/0x90 [ 30.948582] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.949263] [ 30.949494] The buggy address belongs to the object at ffff888016738740 [ 30.949494] which belongs to the cache vm_area_struct of size 168 [ 30.951000] The buggy address is located 88 bytes inside of [ 30.951000] freed 168-byte region [ffff888016738740, ffff8880167387e8) [ 30.952439] [ 30.952659] The buggy address belongs to the physical page: [ 30.953356] page:000000007a3e1ff9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16738 [ 30.954460] memcg:ffff888009be9401 [ 30.954890] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.955561] page_type: 0xffffffff() [ 30.956021] raw: 0100000000000200 ffff88800879fc80 ffffea000031c900 dead000000000002 [ 30.956975] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888009be9401 [ 30.957917] page dumped because: kasan: bad access detected [ 30.958578] [ 30.958796] Memory state around the buggy address: [ 30.959406] ffff888016738680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.960279] ffff888016738700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.961170] >ffff888016738780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.962025] ^ [ 30.962532] ffff888016738800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 [ 30.963404] ffff888016738880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc [ 30.964264] ================================================================== [ 30.965454] Disabling lock debugging due to kernel taint [ 33.166602] BUG: Bad rss-counter state mm:00000000fcb75a37 type:MM_FILEPAGES val:33 [ 33.167594] BUG: Bad rss-counter state mm:00000000fcb75a37 type:MM_ANONPAGES val:22 [ 33.661975] BUG: Bad rss-counter state mm:00000000c70be2be type:MM_FILEPAGES val:33 [ 33.663143] BUG: Bad rss-counter state mm:00000000c70be2be type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:1802' (ECDSA) to the list of known hosts. 2023/06/19 11:06:00 fuzzer started 2023/06/19 11:06:00 dialing manager at localhost:44161 2023/06/19 11:06:00 checking machine... 2023/06/19 11:06:00 checking revisions... [ 34.289694] kmemleak: Automatic memory scanning thread ended 2023/06/19 11:06:00 testing simple program... [ 34.328629] cgroup: Unknown subsys name 'net' [ 34.395799] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 11:05:58 Registers: info registers vcpu 0 RAX=0000000000000001 RBX=0000000000000ab9 RCX=ffffffff812bdeb6 RDX=ffffed1003271b69 RSI=0000000000000008 RDI=ffff88801938db40 RBP=ffff88801938de00 RSP=ffff8880194d7a58 R8 =0000000000000001 R9 =ffffed1003271b68 R10=ffff88801938db47 R11=736573203a296e6f R12=000000000000011a R13=000000000000011a R14=ffff88801938db40 R15=0000000000000bd3 RIP=ffffffff814c07e0 RFL=00000286 [--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 00007fec4a68d700 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=00007fea13b963a0 CR3=000000000e65c000 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=2039353a35303a3131203931206e754a XMM01=73732878696e755f6d6170203a5d3932 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3932325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732039353a35303a3131203931 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000007 RBX=0000000000000002 RCX=ffffffff8180c521 RDX=00000000000080c5 RSI=00000000000080c5 RDI=ffffffff86507ed4 RBP=ffff88806cf09ad0 RSP=ffff88806cf09a08 R8 =0000000000000000 R9 =ffff88806cf09ab8 R10=0000000000038001 R11=0000000000020d8a R12=ffff88806cf09ad8 R13=ffff88806cf09ac0 R14=ffff88806cf09ab9 R15=ffff88806cf09a78 RIP=ffffffff811307c2 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 00007f0a3d65e900 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=00007f0a3d628008 CR3=000000001a8fe000 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=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