syzkaller login: [ 30.340103] BUG: Bad rss-counter state mm:0000000037cc19a3 type:MM_FILEPAGES val:33 [ 30.341322] BUG: Bad rss-counter state mm:0000000037cc19a3 type:MM_ANONPAGES val:22 [ 30.490586] ================================================================== [ 30.491519] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.492475] Read of size 8 at addr ffff88800da313f8 by task sshd/221 [ 30.493317] [ 30.493535] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.494389] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.495364] Call Trace: [ 30.495697] [ 30.495978] dump_stack_lvl+0x91/0xf0 [ 30.496466] print_report+0xcc/0x620 [ 30.496945] ? __virt_addr_valid+0x102/0x340 [ 30.497490] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.498100] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.498711] kasan_report+0xbe/0xf0 [ 30.499194] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.499838] vma_interval_tree_remove+0xc75/0xec0 [ 30.500440] vma_prepare+0xc54/0x11a0 [ 30.500913] __split_vma+0x5af/0x950 [ 30.501380] ? __pfx___split_vma+0x10/0x10 [ 30.501905] ? find_held_lock+0x2c/0x110 [ 30.502425] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.502997] ? lock_is_held_type+0x9f/0x120 [ 30.503547] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.504150] ? mtree_range_walk+0x632/0x900 [ 30.504695] ? mas_walk+0x5c7/0x7c0 [ 30.505171] do_vmi_munmap+0x1f1/0x2b0 [ 30.505655] mmap_region+0x1f9/0x2660 [ 30.506135] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.506647] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.507360] ? __pfx_lock_acquire+0x10/0x10 [ 30.507919] ? __pfx_mmap_region+0x10/0x10 [ 30.508446] ? security_mmap_addr+0x7d/0xa0 [ 30.508975] ? get_unmapped_area+0x1f5/0x3f0 [ 30.509524] do_mmap+0x854/0xf00 [ 30.509961] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.510447] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.511012] ksys_mmap_pgoff+0x3af/0x500 [ 30.511518] do_syscall_64+0x3f/0x90 [ 30.511998] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.512642] RIP: 0033:0x7f5e70851d82 [ 30.513094] 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 [ 30.515193] RSP: 002b:00007fff6cf21fa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.516091] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f5e70851d82 [ 30.516935] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f5e6fc8b000 [ 30.517773] RBP: 00007f5e6fc8b000 R08: 0000000000000009 R09: 0000000000001000 [ 30.518600] R10: 0000000000000812 R11: 0000000000000206 R12: 000055eb65e48ec0 [ 30.519434] R13: 00007fff6cf21fc0 R14: 00007fff6cf21ff0 R15: 00007fff6cf22350 [ 30.520310] [ 30.520603] [ 30.520822] Allocated by task 214: [ 30.521243] kasan_save_stack+0x22/0x50 [ 30.521746] kasan_set_track+0x25/0x30 [ 30.522234] __kasan_slab_alloc+0x59/0x70 [ 30.522758] kmem_cache_alloc+0x16b/0x370 [ 30.523271] vm_area_dup+0x20/0x160 [ 30.523737] __split_vma+0x170/0x950 [ 30.524204] split_vma+0xc6/0x110 [ 30.524645] mprotect_fixup+0x8d2/0xb30 [ 30.525138] do_mprotect_pkey+0x87e/0xd40 [ 30.525657] __x64_sys_mprotect+0x78/0xc0 [ 30.526177] do_syscall_64+0x3f/0x90 [ 30.526645] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.527289] [ 30.527521] Freed by task 214: [ 30.527918] kasan_save_stack+0x22/0x50 [ 30.528419] kasan_set_track+0x25/0x30 [ 30.528912] kasan_save_free_info+0x2b/0x50 [ 30.529441] __kasan_slab_free+0x10a/0x190 [ 30.529972] kmem_cache_free+0x10d/0x4d0 [ 30.530478] rcu_core+0x8c8/0x2860 [ 30.530918] __do_softirq+0x1b7/0x7d4 [ 30.531398] [ 30.531626] Last potentially related work creation: [ 30.532202] kasan_save_stack+0x22/0x50 [ 30.532703] __kasan_record_aux_stack+0x8e/0xa0 [ 30.533272] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.533909] remove_vma+0x139/0x170 [ 30.534355] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.534905] do_vmi_munmap+0x1f1/0x2b0 [ 30.535388] __vm_munmap+0x138/0x3a0 [ 30.535873] __x64_sys_munmap+0x59/0x80 [ 30.536362] do_syscall_64+0x3f/0x90 [ 30.536832] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.537469] [ 30.537683] The buggy address belongs to the object at ffff88800da313a0 [ 30.537683] which belongs to the cache vm_area_struct of size 168 [ 30.539152] The buggy address is located 88 bytes inside of [ 30.539152] freed 168-byte region [ffff88800da313a0, ffff88800da31448) [ 30.540568] [ 30.540783] The buggy address belongs to the physical page: [ 30.541444] page:00000000147aca4c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xda31 [ 30.542522] memcg:ffff888015cbd401 [ 30.542950] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.543607] page_type: 0xffffffff() [ 30.544058] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.544966] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888015cbd401 [ 30.545860] page dumped because: kasan: bad access detected [ 30.546510] [ 30.546724] Memory state around the buggy address: [ 30.547302] ffff88800da31280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 [ 30.548164] ffff88800da31300: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [ 30.549002] >ffff88800da31380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 30.549851] ^ [ 30.550683] ffff88800da31400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 30.551538] ffff88800da31480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.552387] ================================================================== [ 30.553351] Disabling lock debugging due to kernel taint [ 32.514439] BUG: Bad rss-counter state mm:00000000e1384601 type:MM_FILEPAGES val:33 [ 32.515343] BUG: Bad rss-counter state mm:00000000e1384601 type:MM_ANONPAGES val:22 [ 33.003456] BUG: Bad rss-counter state mm:000000000bc1d210 type:MM_FILEPAGES val:33 [ 33.004771] BUG: Bad rss-counter state mm:000000000bc1d210 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:54037' (ECDSA) to the list of known hosts. 2023/06/21 05:14:22 fuzzer started 2023/06/21 05:14:22 dialing manager at localhost:36067 2023/06/21 05:14:22 checking machine... 2023/06/21 05:14:22 checking revisions... [ 33.706848] kmemleak: Automatic memory scanning thread ended 2023/06/21 05:14:22 testing simple program... [ 33.750943] cgroup: Unknown subsys name 'net' [ 33.796721] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:14:22 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=1ffff1100340af7b RCX=1ffffffff0ba7c92 RDX=1ffff11002bba07e RSI=0000000000000008 RDI=ffff888015dd03f0 RBP=ffff888015dd0000 RSP=ffff88801a057b98 R8 =ffff888015dd0018 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=0000000000000000 R12=0000000000000206 R13=ffff888015dd0910 R14=ffff888015dd0014 R15=0000000000000000 RIP=ffffffff8124dab6 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 00007fb4ab560700 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=00007fb9458dc650 CR3=000000000e840000 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=34313a3530203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3033325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320303736 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f 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=00007f1d7acfa670 CR3=000000000eefa000 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=009383ff3df01aab584a1e672609bf1c XMM02=2c67c8bc2e329bc3000000000011d2e0 XMM03=fb795ef6d657705600000000001217b0 XMM04=53f504f490e5008a00000000000ae988 XMM05=ec1731d55b833e1300000000001326b8 XMM06=c291bd5c70af25b90000000000131758 XMM07=e042d86d42eb936e0000000000121a30 XMM08=6fe66822aa21f050000000000011d340 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000