syzkaller login: [ 30.726612] BUG: Bad rss-counter state mm:0000000007e9bb3f type:MM_FILEPAGES val:33 [ 30.727787] BUG: Bad rss-counter state mm:0000000007e9bb3f type:MM_ANONPAGES val:22 [ 30.766311] ================================================================== [ 30.767338] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.768350] Read of size 8 at addr ffff88801695a228 by task sshd/219 [ 30.769252] [ 30.769508] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.770609] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.771851] Call Trace: [ 30.772308] [ 30.772670] dump_stack_lvl+0x91/0xf0 [ 30.773324] print_report+0xcc/0x620 [ 30.773857] ? __virt_addr_valid+0x102/0x340 [ 30.774453] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.775088] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.775787] kasan_report+0xbe/0xf0 [ 30.776267] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.776890] vma_interval_tree_remove+0xc75/0xec0 [ 30.777543] vma_prepare+0xc54/0x11a0 [ 30.778042] __split_vma+0x5af/0x950 [ 30.778543] ? __pfx___split_vma+0x10/0x10 [ 30.779109] ? find_held_lock+0x2c/0x110 [ 30.779648] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.780228] ? lock_is_held_type+0x9f/0x120 [ 30.780775] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.781396] ? mtree_range_walk+0x632/0x900 [ 30.781950] ? mas_walk+0x5c7/0x7c0 [ 30.782422] do_vmi_munmap+0x1f1/0x2b0 [ 30.782918] mmap_region+0x1f9/0x2660 [ 30.783424] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.783975] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.784723] ? __pfx_lock_acquire+0x10/0x10 [ 30.785293] ? __pfx_mmap_region+0x10/0x10 [ 30.785846] ? security_mmap_addr+0x7d/0xa0 [ 30.786391] ? get_unmapped_area+0x1f5/0x3f0 [ 30.786948] do_mmap+0x854/0xf00 [ 30.787393] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.787890] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.788459] ksys_mmap_pgoff+0x3af/0x500 [ 30.788973] do_syscall_64+0x3f/0x90 [ 30.789472] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.790136] RIP: 0033:0x7fbe875dcd82 [ 30.790616] 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 [ 30.792774] RSP: 002b:00007ffef6db5968 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.793699] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fbe875dcd82 [ 30.794577] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fbe86a16000 [ 30.795418] RBP: 00007fbe86a16000 R08: 0000000000000009 R09: 0000000000001000 [ 30.796263] R10: 0000000000000812 R11: 0000000000000206 R12: 0000558d3202cf70 [ 30.797107] R13: 00007ffef6db5980 R14: 00007ffef6db59b0 R15: 00007ffef6db5d10 [ 30.797972] [ 30.798260] [ 30.798476] Allocated by task 212: [ 30.798915] kasan_save_stack+0x22/0x50 [ 30.799418] kasan_set_track+0x25/0x30 [ 30.799911] __kasan_slab_alloc+0x59/0x70 [ 30.800438] kmem_cache_alloc+0x16b/0x370 [ 30.800950] vm_area_dup+0x20/0x160 [ 30.801449] __split_vma+0x170/0x950 [ 30.801942] split_vma+0xc6/0x110 [ 30.802387] mprotect_fixup+0x8d2/0xb30 [ 30.802887] do_mprotect_pkey+0x87e/0xd40 [ 30.803419] __x64_sys_mprotect+0x78/0xc0 [ 30.803947] do_syscall_64+0x3f/0x90 [ 30.804414] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.805054] [ 30.805283] Freed by task 212: [ 30.805673] kasan_save_stack+0x22/0x50 [ 30.806177] kasan_set_track+0x25/0x30 [ 30.806667] kasan_save_free_info+0x2b/0x50 [ 30.807210] __kasan_slab_free+0x10a/0x190 [ 30.807743] kmem_cache_free+0x10d/0x4d0 [ 30.808247] rcu_core+0x8c8/0x2860 [ 30.808692] __do_softirq+0x1b7/0x7d4 [ 30.809178] [ 30.809400] Last potentially related work creation: [ 30.809995] kasan_save_stack+0x22/0x50 [ 30.810498] __kasan_record_aux_stack+0x8e/0xa0 [ 30.811070] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.811771] remove_vma+0x139/0x170 [ 30.812242] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.812793] do_vmi_munmap+0x1f1/0x2b0 [ 30.813324] __vm_munmap+0x138/0x3a0 [ 30.813804] __x64_sys_munmap+0x59/0x80 [ 30.814325] do_syscall_64+0x3f/0x90 [ 30.814794] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.815432] [ 30.815649] The buggy address belongs to the object at ffff88801695a1d0 [ 30.815649] which belongs to the cache vm_area_struct of size 168 [ 30.817116] The buggy address is located 88 bytes inside of [ 30.817116] freed 168-byte region [ffff88801695a1d0, ffff88801695a278) [ 30.818511] [ 30.818728] The buggy address belongs to the physical page: [ 30.819378] page:00000000ee7fe5cc refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1695a [ 30.820500] memcg:ffff88800dfd3c01 [ 30.820931] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.821668] page_type: 0xffffffff() [ 30.822137] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.823086] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dfd3c01 [ 30.824003] page dumped because: kasan: bad access detected [ 30.824662] [ 30.824878] Memory state around the buggy address: [ 30.825458] ffff88801695a100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.826307] ffff88801695a180: 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.827154] >ffff88801695a200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.828009] ^ [ 30.828563] ffff88801695a280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 30.829418] ffff88801695a300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 30.830261] ================================================================== [ 30.831181] Disabling lock debugging due to kernel taint [ 32.819965] BUG: Bad rss-counter state mm:000000003e17a518 type:MM_FILEPAGES val:33 [ 32.820953] BUG: Bad rss-counter state mm:000000003e17a518 type:MM_ANONPAGES val:22 [ 33.273945] BUG: Bad rss-counter state mm:00000000d21db67b type:MM_FILEPAGES val:33 [ 33.274952] BUG: Bad rss-counter state mm:00000000d21db67b type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:30932' (ECDSA) to the list of known hosts. 2023/06/21 06:18:29 fuzzer started 2023/06/21 06:18:29 dialing manager at localhost:36067 2023/06/21 06:18:29 checking machine... 2023/06/21 06:18:29 checking revisions... [ 33.974435] kmemleak: Automatic memory scanning thread ended 2023/06/21 06:18:29 testing simple program... [ 34.033050] cgroup: Unknown subsys name 'net' [ 34.070862] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 06:18:29 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff815343f6 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff8451de4d RSP=ffff88800ef3f698 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=0000000000000000 R12=ffff88806ce39500 R13=ffff888015bb8000 R14=0000000000000000 R15=0000000000000001 RIP=ffffffff8180fea8 RFL=00000056 [---ZAP-] 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 00007f960cf94700 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=00007fc8c45420b0 CR3=0000000019b28000 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=38313a3630203132206e754a3e36383c XMM01=7365733a646873732878696e755f6d61 XMM02=736f6c63206e6f6973736573203a296e XMM03=5f6d6170203a5d3832325b6468737320 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320363237 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=0000000000000001 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=00007f6abd30fcd0 CR3=000000000d928000 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=6679970c05c9b1be7845072b88626571 XMM02=000000000011a2d8eff9b2d0a8fce9cb XMM03=000000000011a3a82c67c8bc2e329bc3 XMM04=c2de672f5f1c1eed00000000000ae988 XMM05=7ca47c6ebf65eae40000000000131b10 XMM06=806171799158d9670000000000131508 XMM07=e042d86d42eb936e0000000000121a68 XMM08=cf362d926fd41509000000000011a3a8 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000