syzkaller login: [ 30.700272] BUG: Bad rss-counter state mm:00000000bdc8cad9 type:MM_FILEPAGES val:33 [ 30.701572] BUG: Bad rss-counter state mm:00000000bdc8cad9 type:MM_ANONPAGES val:22 [ 30.864647] ================================================================== [ 30.865559] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.866515] Read of size 8 at addr ffff88800f3c7058 by task sshd/221 [ 30.867291] [ 30.867515] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.868520] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.869488] Call Trace: [ 30.869804] [ 30.870111] dump_stack_lvl+0x91/0xf0 [ 30.870600] print_report+0xcc/0x620 [ 30.871082] ? __virt_addr_valid+0x102/0x340 [ 30.871638] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.872269] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.872883] kasan_report+0xbe/0xf0 [ 30.873361] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.873983] vma_interval_tree_remove+0xc75/0xec0 [ 30.874582] vma_prepare+0xc54/0x11a0 [ 30.875064] __split_vma+0x5af/0x950 [ 30.875545] ? __pfx___split_vma+0x10/0x10 [ 30.876093] ? find_held_lock+0x2c/0x110 [ 30.876618] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.877178] ? lock_is_held_type+0x9f/0x120 [ 30.877713] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.878319] ? mtree_range_walk+0x632/0x900 [ 30.878868] ? mas_walk+0x5c7/0x7c0 [ 30.879345] do_vmi_munmap+0x1f1/0x2b0 [ 30.879835] mmap_region+0x1f9/0x2660 [ 30.880339] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.880847] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.881554] ? __pfx_lock_acquire+0x10/0x10 [ 30.882088] ? __pfx_mmap_region+0x10/0x10 [ 30.882618] ? security_mmap_addr+0x7d/0xa0 [ 30.883143] ? get_unmapped_area+0x1f5/0x3f0 [ 30.883692] do_mmap+0x854/0xf00 [ 30.884139] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.884642] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.885204] ksys_mmap_pgoff+0x3af/0x500 [ 30.885711] do_syscall_64+0x3f/0x90 [ 30.886200] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.886852] RIP: 0033:0x7fe28dacdd82 [ 30.887311] 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 [ 30.889439] RSP: 002b:00007ffe5235b938 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.890339] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe28dacdd82 [ 30.891181] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe28cf07000 [ 30.892059] RBP: 00007fe28cf07000 R08: 0000000000000009 R09: 0000000000001000 [ 30.892900] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563f0b352ec0 [ 30.893751] R13: 00007ffe5235b950 R14: 00007ffe5235b980 R15: 00007ffe5235bce0 [ 30.894606] [ 30.894898] [ 30.895135] Allocated by task 214: [ 30.895564] kasan_save_stack+0x22/0x50 [ 30.896099] kasan_set_track+0x25/0x30 [ 30.896611] __kasan_slab_alloc+0x59/0x70 [ 30.897149] kmem_cache_alloc+0x16b/0x370 [ 30.897663] vm_area_dup+0x20/0x160 [ 30.898115] __split_vma+0x170/0x950 [ 30.898578] split_vma+0xc6/0x110 [ 30.899012] mprotect_fixup+0x8d2/0xb30 [ 30.899507] do_mprotect_pkey+0x87e/0xd40 [ 30.900026] __x64_sys_mprotect+0x78/0xc0 [ 30.900548] do_syscall_64+0x3f/0x90 [ 30.901023] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.901670] [ 30.901891] Freed by task 204: [ 30.902288] kasan_save_stack+0x22/0x50 [ 30.902789] kasan_set_track+0x25/0x30 [ 30.903301] kasan_save_free_info+0x2b/0x50 [ 30.903861] __kasan_slab_free+0x10a/0x190 [ 30.904444] kmem_cache_free+0x10d/0x4d0 [ 30.904952] rcu_core+0x8c8/0x2860 [ 30.905399] __do_softirq+0x1b7/0x7d4 [ 30.905881] [ 30.906097] Last potentially related work creation: [ 30.906696] kasan_save_stack+0x22/0x50 [ 30.907201] __kasan_record_aux_stack+0x8e/0xa0 [ 30.907790] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.908442] remove_vma+0x139/0x170 [ 30.908911] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.909472] do_vmi_munmap+0x1f1/0x2b0 [ 30.909955] __vm_munmap+0x138/0x3a0 [ 30.910426] __x64_sys_munmap+0x59/0x80 [ 30.910923] do_syscall_64+0x3f/0x90 [ 30.911404] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.912083] [ 30.912311] The buggy address belongs to the object at ffff88800f3c7000 [ 30.912311] which belongs to the cache vm_area_struct of size 168 [ 30.913799] The buggy address is located 88 bytes inside of [ 30.913799] freed 168-byte region [ffff88800f3c7000, ffff88800f3c70a8) [ 30.915215] [ 30.915432] The buggy address belongs to the physical page: [ 30.916112] page:0000000058caf134 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf3c7 [ 30.917205] memcg:ffff888014623b01 [ 30.917628] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.918278] page_type: 0xffffffff() [ 30.918723] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.919639] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff888014623b01 [ 30.920591] page dumped because: kasan: bad access detected [ 30.921249] [ 30.921466] Memory state around the buggy address: [ 30.922044] ffff88800f3c6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.922896] ffff88800f3c6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.923797] >ffff88800f3c7000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.924675] ^ [ 30.925408] ffff88800f3c7080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb [ 30.926250] ffff88800f3c7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.927096] ================================================================== [ 30.928116] Disabling lock debugging due to kernel taint [ 33.072241] BUG: Bad rss-counter state mm:000000003b555138 type:MM_FILEPAGES val:33 [ 33.073537] BUG: Bad rss-counter state mm:000000003b555138 type:MM_ANONPAGES val:22 [ 33.558568] BUG: Bad rss-counter state mm:000000009152cf4e type:MM_FILEPAGES val:33 [ 33.559774] BUG: Bad rss-counter state mm:000000009152cf4e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:9683' (ECDSA) to the list of known hosts. 2023/06/21 03:09:12 fuzzer started 2023/06/21 03:09:13 dialing manager at localhost:36067 2023/06/21 03:09:13 checking machine... 2023/06/21 03:09:13 checking revisions... [ 34.303338] kmemleak: Automatic memory scanning thread ended 2023/06/21 03:09:13 testing simple program... [ 34.355677] cgroup: Unknown subsys name 'net' [ 34.394112] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 03:09:12 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff815343f6 RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=ffffffff8180636b RSP=ffff88801643fc20 R8 =00000000800d000c R9 =0000000000000000 R10=ffffea0000672b00 R11=00000000000d000c R12=ffff88800844f780 R13=ffffea0000672b00 R14=ffff88800844f780 R15=0000000000000001 RIP=ffffffff8180feac 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 00007f1da3a1f900 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=00007f1da3fd70b0 CR3=0000000019eae000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 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=00007fcc7f8fe048 CR3=000000000c584000 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=c0b6ecac6472058f144a568e8f78daf8 XMM02=000000000011ad70eff9b2d0a8fce9cb XMM03=000000000011ae402c67c8bc2e329bc3 XMM04=1160f7d12b68b7d400000000000ae988 XMM05=e4cb8bb95a7664b60000000000131a00 XMM06=7eac8c6b1c2bb23b0000000000130868 XMM07=e042d86d42eb936e0000000000121e08 XMM08=5e3b1c60a76e9a8e000000000011ae40 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000