syzkaller login: [ 30.710505] BUG: Bad rss-counter state mm:00000000fd294bdd type:MM_FILEPAGES val:33 [ 30.711509] BUG: Bad rss-counter state mm:00000000fd294bdd type:MM_ANONPAGES val:22 [ 30.905270] ================================================================== [ 30.906397] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.907641] Read of size 8 at addr ffff88800e45f4e0 by task sshd/223 [ 30.908572] [ 30.908793] CPU: 1 PID: 223 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.909681] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.910722] Call Trace: [ 30.911042] [ 30.911335] dump_stack_lvl+0x91/0xf0 [ 30.911824] print_report+0xcc/0x620 [ 30.912318] ? __virt_addr_valid+0x102/0x340 [ 30.912872] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.913517] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.914174] kasan_report+0xbe/0xf0 [ 30.914658] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.915296] vma_interval_tree_remove+0xc75/0xec0 [ 30.915904] vma_prepare+0xc54/0x11a0 [ 30.916395] __split_vma+0x5af/0x950 [ 30.916873] ? __pfx___split_vma+0x10/0x10 [ 30.917434] ? find_held_lock+0x2c/0x110 [ 30.917981] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.918565] ? lock_is_held_type+0x9f/0x120 [ 30.919122] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.919874] ? mtree_range_walk+0x632/0x900 [ 30.920451] ? mas_walk+0x5c7/0x7c0 [ 30.920942] do_vmi_munmap+0x1f1/0x2b0 [ 30.921473] mmap_region+0x1f9/0x2660 [ 30.921989] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.922526] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.923263] ? __pfx_lock_acquire+0x10/0x10 [ 30.923822] ? __pfx_mmap_region+0x10/0x10 [ 30.924380] ? security_mmap_addr+0x7d/0xa0 [ 30.924930] ? get_unmapped_area+0x1f5/0x3f0 [ 30.925520] do_mmap+0x854/0xf00 [ 30.926008] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.926536] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.927136] ksys_mmap_pgoff+0x3af/0x500 [ 30.927662] do_syscall_64+0x3f/0x90 [ 30.928163] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.928828] RIP: 0033:0x7f79c0adcd82 [ 30.929320] 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 [ 30.931553] RSP: 002b:00007ffd2ae67608 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.932493] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f79c0adcd82 [ 30.933389] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f79bff16000 [ 30.934290] RBP: 00007f79bff16000 R08: 0000000000000009 R09: 0000000000001000 [ 30.935169] R10: 0000000000000812 R11: 0000000000000206 R12: 00005587df579b20 [ 30.936040] R13: 00007ffd2ae67620 R14: 00007ffd2ae67650 R15: 00007ffd2ae679b0 [ 30.936932] [ 30.937255] [ 30.937481] Allocated by task 212: [ 30.937933] kasan_save_stack+0x22/0x50 [ 30.938468] kasan_set_track+0x25/0x30 [ 30.938979] __kasan_slab_alloc+0x59/0x70 [ 30.939538] kmem_cache_alloc+0x16b/0x370 [ 30.940090] vm_area_dup+0x20/0x160 [ 30.940556] __split_vma+0x170/0x950 [ 30.941033] split_vma+0xc6/0x110 [ 30.941516] mprotect_fixup+0x8d2/0xb30 [ 30.942065] do_mprotect_pkey+0x87e/0xd40 [ 30.942605] __x64_sys_mprotect+0x78/0xc0 [ 30.943156] do_syscall_64+0x3f/0x90 [ 30.943654] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.944324] [ 30.944547] Freed by task 114: [ 30.944953] kasan_save_stack+0x22/0x50 [ 30.945505] kasan_set_track+0x25/0x30 [ 30.946043] kasan_save_free_info+0x2b/0x50 [ 30.946594] __kasan_slab_free+0x10a/0x190 [ 30.947138] kmem_cache_free+0x10d/0x4d0 [ 30.947646] rcu_core+0x8c8/0x2860 [ 30.948101] __do_softirq+0x1b7/0x7d4 [ 30.948579] [ 30.948791] Last potentially related work creation: [ 30.949467] kasan_save_stack+0x22/0x50 [ 30.950010] __kasan_record_aux_stack+0x8e/0xa0 [ 30.950608] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.951270] remove_vma+0x139/0x170 [ 30.951731] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.952306] do_vmi_munmap+0x1f1/0x2b0 [ 30.952798] __vm_munmap+0x138/0x3a0 [ 30.953280] __x64_sys_munmap+0x59/0x80 [ 30.953797] do_syscall_64+0x3f/0x90 [ 30.954286] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.954933] [ 30.955157] Second to last potentially related work creation: [ 30.955851] kasan_save_stack+0x22/0x50 [ 30.956373] __kasan_record_aux_stack+0x8e/0xa0 [ 30.956954] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.957629] remove_vma+0x139/0x170 [ 30.958132] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.958705] do_vmi_munmap+0x1f1/0x2b0 [ 30.959212] mmap_region+0x1f9/0x2660 [ 30.959706] do_mmap+0x854/0xf00 [ 30.960153] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.960651] ksys_mmap_pgoff+0x3af/0x500 [ 30.961175] do_syscall_64+0x3f/0x90 [ 30.961665] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.962339] [ 30.962558] The buggy address belongs to the object at ffff88800e45f488 [ 30.962558] which belongs to the cache vm_area_struct of size 168 [ 30.964070] The buggy address is located 88 bytes inside of [ 30.964070] freed 168-byte region [ffff88800e45f488, ffff88800e45f530) [ 30.965526] [ 30.965748] The buggy address belongs to the physical page: [ 30.966463] page:000000004a4b9dea refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe45f [ 30.967573] memcg:ffff88800d920001 [ 30.968002] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.968675] page_type: 0xffffffff() [ 30.969161] raw: 0100000000000200 ffff88800879fc80 ffffea00003a2180 dead000000000008 [ 30.970129] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d920001 [ 30.971066] page dumped because: kasan: bad access detected [ 30.971746] [ 30.971965] Memory state around the buggy address: [ 30.972568] ffff88800e45f380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.973461] ffff88800e45f400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc [ 30.974355] >ffff88800e45f480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.975226] ^ [ 30.975989] ffff88800e45f500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 00 [ 30.976857] ffff88800e45f580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.977734] ================================================================== [ 30.978734] Disabling lock debugging due to kernel taint [ 33.480854] BUG: Bad rss-counter state mm:000000008314c1c3 type:MM_FILEPAGES val:33 [ 33.481895] BUG: Bad rss-counter state mm:000000008314c1c3 type:MM_ANONPAGES val:22 [ 33.940648] BUG: Bad rss-counter state mm:000000000dd1535c type:MM_FILEPAGES val:33 [ 33.942017] BUG: Bad rss-counter state mm:000000000dd1535c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:48611' (ECDSA) to the list of known hosts. 2023/06/19 12:29:58 fuzzer started 2023/06/19 12:29:58 dialing manager at localhost:44161 2023/06/19 12:29:58 checking machine... 2023/06/19 12:29:58 checking revisions... [ 34.701671] kmemleak: Automatic memory scanning thread ended 2023/06/19 12:29:58 testing simple program... [ 34.745922] cgroup: Unknown subsys name 'net' [ 34.799212] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 12:29:56 Registers: info registers vcpu 0 RAX=0000000000000002 RBX=0000000000000001 RCX=ffffffff8613fda0 RDX=dffffc0000000000 RSI=ffff88801462f9c9 RDI=0000000000000001 RBP=ffff88801462f9e0 RSP=ffff88801462f918 R8 =ffffffff8613fda4 R9 =ffff88801462f9c8 R10=0000000000038001 R11=000000000002244e R12=ffff88801462f9e8 R13=ffff88801462f9d0 R14=ffff88801462f9c9 R15=ffff88801462f988 RIP=ffffffff81130aed 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 00007f949309f900 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=00007ff350de4650 CR3=00000000094b0000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=bb60bb01fb53a7a900000000000ae988 XMM05=0984585e5906ab1000000000001365f8 XMM06=e4cb8bb95a7664b60000000000135490 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 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=0000000000000001 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=00007ffffa2517b8 CR3=0000000005482000 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=00007f21fd2a0510000055c383088790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000