syzkaller login: [ 39.321401] BUG: Bad rss-counter state mm:00000000b33251f0 type:MM_FILEPAGES val:33 [ 39.322482] BUG: Bad rss-counter state mm:00000000b33251f0 type:MM_ANONPAGES val:22 [ 39.486691] ================================================================== [ 39.487927] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 39.489295] Read of size 8 at addr ffff88800e5d8c20 by task sshd/220 [ 39.490122] [ 39.490368] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 39.491309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 39.492345] Call Trace: [ 39.492683] [ 39.493001] dump_stack_lvl+0x91/0xf0 [ 39.493529] print_report+0xcc/0x620 [ 39.494033] ? __virt_addr_valid+0x102/0x340 [ 39.494615] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.495279] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.495917] kasan_report+0xbe/0xf0 [ 39.496435] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.497108] vma_interval_tree_remove+0xc75/0xec0 [ 39.497740] vma_prepare+0xc54/0x11a0 [ 39.498246] __split_vma+0x5af/0x950 [ 39.498750] ? __pfx___split_vma+0x10/0x10 [ 39.499327] ? find_held_lock+0x2c/0x110 [ 39.499875] do_vmi_align_munmap+0x2ba/0x11f0 [ 39.500481] ? lock_is_held_type+0x9f/0x120 [ 39.501061] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 39.501726] ? mtree_range_walk+0x632/0x900 [ 39.502317] ? mas_walk+0x5c7/0x7c0 [ 39.502814] do_vmi_munmap+0x1f1/0x2b0 [ 39.503355] mmap_region+0x1f9/0x2660 [ 39.503863] ? vm_mmap_pgoff+0x15c/0x3a0 [ 39.504406] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 39.505171] ? __pfx_lock_acquire+0x10/0x10 [ 39.505738] ? __pfx_mmap_region+0x10/0x10 [ 39.506318] ? security_mmap_addr+0x7d/0xa0 [ 39.506884] ? get_unmapped_area+0x1f5/0x3f0 [ 39.507474] do_mmap+0x854/0xf00 [ 39.507925] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.508455] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 39.509050] ksys_mmap_pgoff+0x3af/0x500 [ 39.509589] do_syscall_64+0x3f/0x90 [ 39.510088] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.510789] RIP: 0033:0x7f9302073d82 [ 39.511279] 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 [ 39.513550] RSP: 002b:00007ffe72be2e38 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 39.514516] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f9302073d82 [ 39.515416] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f93014ad000 [ 39.516325] RBP: 00007f93014ad000 R08: 0000000000000009 R09: 0000000000001000 [ 39.517210] R10: 0000000000000812 R11: 0000000000000206 R12: 0000564034206ec0 [ 39.518074] R13: 00007ffe72be2e50 R14: 00007ffe72be2e80 R15: 00007ffe72be31e0 [ 39.518952] [ 39.519256] [ 39.519487] Allocated by task 213: [ 39.519919] kasan_save_stack+0x22/0x50 [ 39.520442] kasan_set_track+0x25/0x30 [ 39.520953] __kasan_slab_alloc+0x59/0x70 [ 39.521500] kmem_cache_alloc+0x16b/0x370 [ 39.522021] vm_area_dup+0x20/0x160 [ 39.522489] __split_vma+0x170/0x950 [ 39.522954] split_vma+0xc6/0x110 [ 39.523403] mprotect_fixup+0x8d2/0xb30 [ 39.523911] do_mprotect_pkey+0x87e/0xd40 [ 39.524457] __x64_sys_mprotect+0x78/0xc0 [ 39.524992] do_syscall_64+0x3f/0x90 [ 39.525484] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.526129] [ 39.526376] Freed by task 19: [ 39.526764] kasan_save_stack+0x22/0x50 [ 39.527283] kasan_set_track+0x25/0x30 [ 39.527775] kasan_save_free_info+0x2b/0x50 [ 39.528325] __kasan_slab_free+0x10a/0x190 [ 39.528875] kmem_cache_free+0x10d/0x4d0 [ 39.529447] rcu_core+0x8c8/0x2860 [ 39.529901] __do_softirq+0x1b7/0x7d4 [ 39.530399] [ 39.530620] Last potentially related work creation: [ 39.531197] kasan_save_stack+0x22/0x50 [ 39.531707] __kasan_record_aux_stack+0x8e/0xa0 [ 39.532292] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.532952] remove_vma+0x139/0x170 [ 39.533428] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.533996] do_vmi_munmap+0x1f1/0x2b0 [ 39.534507] __vm_munmap+0x138/0x3a0 [ 39.534984] __x64_sys_munmap+0x59/0x80 [ 39.535492] do_syscall_64+0x3f/0x90 [ 39.535964] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.536612] [ 39.536846] Second to last potentially related work creation: [ 39.537539] kasan_save_stack+0x22/0x50 [ 39.538042] __kasan_record_aux_stack+0x8e/0xa0 [ 39.538634] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.539283] remove_vma+0x139/0x170 [ 39.539741] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.540316] do_vmi_munmap+0x1f1/0x2b0 [ 39.540810] mmap_region+0x1f9/0x2660 [ 39.541302] do_mmap+0x854/0xf00 [ 39.541731] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.542214] ksys_mmap_pgoff+0x3af/0x500 [ 39.542737] do_syscall_64+0x3f/0x90 [ 39.543217] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.543876] [ 39.544103] The buggy address belongs to the object at ffff88800e5d8bc8 [ 39.544103] which belongs to the cache vm_area_struct of size 168 [ 39.545604] The buggy address is located 88 bytes inside of [ 39.545604] freed 168-byte region [ffff88800e5d8bc8, ffff88800e5d8c70) [ 39.547016] [ 39.547234] The buggy address belongs to the physical page: [ 39.547935] page:00000000777c9f44 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe5d8 [ 39.549078] memcg:ffff88800f08de01 [ 39.549518] flags: 0x100000000000200(slab|node=0|zone=1) [ 39.550163] page_type: 0xffffffff() [ 39.550626] raw: 0100000000000200 ffff88800879fc80 ffffea00003b9b80 dead000000000004 [ 39.551577] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f08de01 [ 39.552492] page dumped because: kasan: bad access detected [ 39.553171] [ 39.553401] Memory state around the buggy address: [ 39.553991] ffff88800e5d8b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 39.554856] ffff88800e5d8b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 39.555731] >ffff88800e5d8c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 39.556606] ^ [ 39.557144] ffff88800e5d8c80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 39.558006] ffff88800e5d8d00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 39.558866] ================================================================== [ 39.559821] Disabling lock debugging due to kernel taint [ 41.468061] BUG: Bad rss-counter state mm:00000000199e4461 type:MM_FILEPAGES val:33 [ 41.469056] BUG: Bad rss-counter state mm:00000000199e4461 type:MM_ANONPAGES val:22 [ 41.907073] BUG: Bad rss-counter state mm:0000000004ed8c8d type:MM_FILEPAGES val:33 [ 41.908203] BUG: Bad rss-counter state mm:0000000004ed8c8d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:53028' (ECDSA) to the list of known hosts. 2023/06/20 05:11:32 fuzzer started 2023/06/20 05:11:32 dialing manager at localhost:44161 2023/06/20 05:11:32 checking machine... 2023/06/20 05:11:32 checking revisions... [ 42.698152] kmemleak: Automatic memory scanning thread ended 2023/06/20 05:11:32 testing simple program... [ 42.750561] cgroup: Unknown subsys name 'net' [ 42.799419] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 05:11:31 Registers: info registers vcpu 0 RAX=ffff888008e1c000 RBX=0000000000000031 RCX=0000000000000000 RDX=ffff888016848000 RSI=0000000000000001 RDI=ffff888008e1c000 RBP=ffff8880090d6000 RSP=ffff88801657fa88 R8 =0000000000000003 R9 =000000000000005d R10=0000000000000025 R11=0000000000000000 R12=ffff88801657fd68 R13=0000000000000001 R14=0000000000000062 R15=dffffc0000000000 RIP=ffffffff81f38344 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 00007f3190e7e900 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=00007fff431d8000 CR3=000000000dc40000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 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=00007f07c1c578d0 CR3=0000000008dbe000 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=161f8fb4fd54cbacb94690ef091bdf6d XMM02=ec2efd57dc4c00df000000000011efa0 XMM03=e9af07733c039e1b000000000011f070 XMM04=761d92a0849b0d6d00000000000ae988 XMM05=19e9129bd510f2350000000000135d88 XMM06=fba621ce8e1c3aac0000000000134f60 XMM07=e042d86d42eb936e00000000001254f0 XMM08=e9af07733c039e1b000000000011f070 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000