syzkaller login: [ 28.713208] BUG: Bad rss-counter state mm:000000008e7d0cab type:MM_FILEPAGES val:33 [ 28.714415] BUG: Bad rss-counter state mm:000000008e7d0cab type:MM_ANONPAGES val:22 [ 28.894701] ================================================================== [ 28.895792] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 28.896898] Read of size 8 at addr ffff88800e0d56b0 by task sshd/222 [ 28.897776] [ 28.897999] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 28.898867] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 28.899876] Call Trace: [ 28.900191] [ 28.900470] dump_stack_lvl+0x91/0xf0 [ 28.900959] print_report+0xcc/0x620 [ 28.901446] ? __virt_addr_valid+0x102/0x340 [ 28.901993] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.902606] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.903220] kasan_report+0xbe/0xf0 [ 28.903717] ? vma_interval_tree_remove+0xc75/0xec0 [ 28.904335] vma_interval_tree_remove+0xc75/0xec0 [ 28.904937] vma_prepare+0xc54/0x11a0 [ 28.905423] __split_vma+0x5af/0x950 [ 28.905898] ? __pfx___split_vma+0x10/0x10 [ 28.906427] ? find_held_lock+0x2c/0x110 [ 28.906951] do_vmi_align_munmap+0x2ba/0x11f0 [ 28.907532] ? lock_is_held_type+0x9f/0x120 [ 28.908079] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 28.908699] ? mtree_range_walk+0x632/0x900 [ 28.909259] ? mas_walk+0x5c7/0x7c0 [ 28.909740] do_vmi_munmap+0x1f1/0x2b0 [ 28.910239] mmap_region+0x1f9/0x2660 [ 28.910726] ? vm_mmap_pgoff+0x15c/0x3a0 [ 28.911238] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 28.911967] ? __pfx_lock_acquire+0x10/0x10 [ 28.912503] ? __pfx_mmap_region+0x10/0x10 [ 28.913030] ? security_mmap_addr+0x7d/0xa0 [ 28.913569] ? get_unmapped_area+0x1f5/0x3f0 [ 28.914125] do_mmap+0x854/0xf00 [ 28.914571] vm_mmap_pgoff+0x1a6/0x3a0 [ 28.915063] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 28.915654] ksys_mmap_pgoff+0x3af/0x500 [ 28.916156] do_syscall_64+0x3f/0x90 [ 28.916636] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.917280] RIP: 0033:0x7fec71df2d82 [ 28.917737] 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 [ 28.919851] RSP: 002b:00007ffc1490e198 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 28.920753] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fec71df2d82 [ 28.921593] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fec7122c000 [ 28.922439] RBP: 00007fec7122c000 R08: 0000000000000009 R09: 0000000000001000 [ 28.923301] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564f32572ec0 [ 28.924151] R13: 00007ffc1490e1b0 R14: 00007ffc1490e1e0 R15: 00007ffc1490e540 [ 28.925001] [ 28.925291] [ 28.925511] Allocated by task 213: [ 28.925943] kasan_save_stack+0x22/0x50 [ 28.926448] kasan_set_track+0x25/0x30 [ 28.926949] __kasan_slab_alloc+0x59/0x70 [ 28.927479] kmem_cache_alloc+0x16b/0x370 [ 28.927991] vm_area_dup+0x20/0x160 [ 28.928444] __split_vma+0x170/0x950 [ 28.928909] split_vma+0xc6/0x110 [ 28.929346] mprotect_fixup+0x8d2/0xb30 [ 28.929846] do_mprotect_pkey+0x87e/0xd40 [ 28.930369] __x64_sys_mprotect+0x78/0xc0 [ 28.930939] do_syscall_64+0x3f/0x90 [ 28.931439] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.932081] [ 28.932292] Freed by task 213: [ 28.932693] kasan_save_stack+0x22/0x50 [ 28.933194] kasan_set_track+0x25/0x30 [ 28.933695] kasan_save_free_info+0x2b/0x50 [ 28.934224] __kasan_slab_free+0x10a/0x190 [ 28.934752] kmem_cache_free+0x10d/0x4d0 [ 28.935266] rcu_core+0x8c8/0x2860 [ 28.935709] __do_softirq+0x1b7/0x7d4 [ 28.936182] [ 28.936401] Last potentially related work creation: [ 28.936983] kasan_save_stack+0x22/0x50 [ 28.937491] __kasan_record_aux_stack+0x8e/0xa0 [ 28.938061] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.938700] remove_vma+0x139/0x170 [ 28.939151] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.939709] do_vmi_munmap+0x1f1/0x2b0 [ 28.940232] __vm_munmap+0x138/0x3a0 [ 28.940763] __x64_sys_munmap+0x59/0x80 [ 28.941317] do_syscall_64+0x3f/0x90 [ 28.941828] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.942528] [ 28.942744] Second to last potentially related work creation: [ 28.943452] kasan_save_stack+0x22/0x50 [ 28.943971] __kasan_record_aux_stack+0x8e/0xa0 [ 28.944552] __call_rcu_common.constprop.0+0x6a/0xb90 [ 28.945195] remove_vma+0x139/0x170 [ 28.945649] do_vmi_align_munmap+0xd4a/0x11f0 [ 28.946211] do_vmi_munmap+0x1f1/0x2b0 [ 28.946700] __vm_munmap+0x138/0x3a0 [ 28.947166] __x64_sys_munmap+0x59/0x80 [ 28.947673] do_syscall_64+0x3f/0x90 [ 28.948152] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 28.948800] [ 28.949020] The buggy address belongs to the object at ffff88800e0d5658 [ 28.949020] which belongs to the cache vm_area_struct of size 168 [ 28.950481] The buggy address is located 88 bytes inside of [ 28.950481] freed 168-byte region [ffff88800e0d5658, ffff88800e0d5700) [ 28.951897] [ 28.952109] The buggy address belongs to the physical page: [ 28.952774] page:00000000c2aae7f3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe0d5 [ 28.953846] memcg:ffff88800e01da01 [ 28.954272] flags: 0x100000000000200(slab|node=0|zone=1) [ 28.954913] page_type: 0xffffffff() [ 28.955378] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 28.956280] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e01da01 [ 28.957186] page dumped because: kasan: bad access detected [ 28.957842] [ 28.958060] Memory state around the buggy address: [ 28.958635] ffff88800e0d5580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 28.959492] ffff88800e0d5600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 28.960346] >ffff88800e0d5680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 28.961192] ^ [ 28.961783] ffff88800e0d5700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 28.962639] ffff88800e0d5780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 28.963511] ================================================================== [ 28.964487] Disabling lock debugging due to kernel taint [ 30.808053] BUG: Bad rss-counter state mm:00000000f1729a1e type:MM_FILEPAGES val:33 [ 30.809085] BUG: Bad rss-counter state mm:00000000f1729a1e type:MM_ANONPAGES val:22 [ 31.284692] BUG: Bad rss-counter state mm:00000000993d0f15 type:MM_FILEPAGES val:33 [ 31.285703] BUG: Bad rss-counter state mm:00000000993d0f15 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:51729' (ECDSA) to the list of known hosts. 2023/06/21 03:34:18 fuzzer started 2023/06/21 03:34:18 dialing manager at localhost:36067 2023/06/21 03:34:18 checking machine... 2023/06/21 03:34:18 checking revisions... [ 32.041015] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:34:18 testing simple program... [ 32.096009] cgroup: Unknown subsys name 'net' [ 32.162755] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:34:18 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000000 RCX=ffff88806c9885f0 RDX=0000000000000000 RSI=ffffffff846000aa RDI=0000000000000000 RBP=ffffffff8367562f RSP=ffff88800ea678b0 R8 =000000004d0597d0 R9 =fffffbfff0ba7a6a R10=ffffffff85d3d357 R11=00000000000b6a61 R12=ffff888015ec4000 R13=ffff888008442280 R14=ffffffff8367562f R15=00000000000000e8 RIP=ffffffff8180f5ca RFL=00000282 [--S----] 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 00007f592715d900 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=00007ffd863ab000 CR3=000000000c99a000 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=00000000000000000000000000000000 XMM01=74696d7265705f6d61703d73726f746e XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffffffff813ad720 RBX=ffffffff813ad470 RCX=ffff88806cf09b38 RDX=1ffff1100d9e135e RSI=ffffffff813ad720 RDI=ffff88806cf09b60 RBP=ffff88806cf09b30 RSP=ffff88806cf09a90 R8 =0000000000000001 R9 =ffff88806cf09ad8 R10=0000000000038001 R11=0000000000003c0d R12=ffff88806cf09b60 R13=0000000000000000 R14=ffff888008d951c0 R15=ffff88800e0a62e0 RIP=ffffffff813ad474 RFL=00000282 [--S----] 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 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=00007fe2028c2000 CR3=000000000ee62000 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=2037313a34333a3330203132206e754a XMM01=73732878696e755f6d6170203a5d3033 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3033325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732037313a34333a3330203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000