syzkaller login: [ 30.632729] BUG: Bad rss-counter state mm:00000000ba99ab22 type:MM_FILEPAGES val:33 [ 30.633613] BUG: Bad rss-counter state mm:00000000ba99ab22 type:MM_ANONPAGES val:22 [ 30.795986] ================================================================== [ 30.796828] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.797792] Read of size 8 at addr ffff88800dd955c8 by task sshd/220 [ 30.798470] [ 30.798691] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.799484] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.800392] Call Trace: [ 30.800691] [ 30.800949] dump_stack_lvl+0x91/0xf0 [ 30.801388] print_report+0xcc/0x620 [ 30.801841] ? __virt_addr_valid+0x102/0x340 [ 30.802339] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.802927] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.803501] kasan_report+0xbe/0xf0 [ 30.803948] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.804504] vma_interval_tree_remove+0xc75/0xec0 [ 30.805058] vma_prepare+0xc54/0x11a0 [ 30.805488] __split_vma+0x5af/0x950 [ 30.805928] ? __pfx___split_vma+0x10/0x10 [ 30.806399] ? find_held_lock+0x2c/0x110 [ 30.806891] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.807414] ? lock_is_held_type+0x9f/0x120 [ 30.807917] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.808465] ? mtree_range_walk+0x632/0x900 [ 30.808971] ? mas_walk+0x5c7/0x7c0 [ 30.809403] do_vmi_munmap+0x1f1/0x2b0 [ 30.809857] mmap_region+0x1f9/0x2660 [ 30.810290] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.810771] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.811442] ? __pfx_lock_acquire+0x10/0x10 [ 30.811941] ? __pfx_mmap_region+0x10/0x10 [ 30.812424] ? security_mmap_addr+0x7d/0xa0 [ 30.812918] ? get_unmapped_area+0x1f5/0x3f0 [ 30.813414] do_mmap+0x854/0xf00 [ 30.813823] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.814282] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.814811] ksys_mmap_pgoff+0x3af/0x500 [ 30.815276] do_syscall_64+0x3f/0x90 [ 30.815741] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.816329] RIP: 0033:0x7fb4ba050d82 [ 30.816747] 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 [ 30.818691] RSP: 002b:00007ffff99c4bd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.819519] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb4ba050d82 [ 30.820309] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb4b948a000 [ 30.821087] RBP: 00007fb4b948a000 R08: 0000000000000009 R09: 0000000000001000 [ 30.821873] R10: 0000000000000812 R11: 0000000000000206 R12: 0000563f33dc2ec0 [ 30.822659] R13: 00007ffff99c4bf0 R14: 00007ffff99c4c20 R15: 00007ffff99c4f80 [ 30.823449] [ 30.823733] [ 30.823931] Allocated by task 213: [ 30.824315] kasan_save_stack+0x22/0x50 [ 30.824786] kasan_set_track+0x25/0x30 [ 30.825230] __kasan_slab_alloc+0x59/0x70 [ 30.825711] kmem_cache_alloc+0x16b/0x370 [ 30.826168] vm_area_dup+0x20/0x160 [ 30.826579] __split_vma+0x170/0x950 [ 30.827021] split_vma+0xc6/0x110 [ 30.827427] mprotect_fixup+0x8d2/0xb30 [ 30.827890] do_mprotect_pkey+0x87e/0xd40 [ 30.828354] __x64_sys_mprotect+0x78/0xc0 [ 30.828837] do_syscall_64+0x3f/0x90 [ 30.829266] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.829854] [ 30.830050] Freed by task 213: [ 30.830403] kasan_save_stack+0x22/0x50 [ 30.830877] kasan_set_track+0x25/0x30 [ 30.831322] kasan_save_free_info+0x2b/0x50 [ 30.831844] __kasan_slab_free+0x10a/0x190 [ 30.832324] kmem_cache_free+0x10d/0x4d0 [ 30.832804] rcu_core+0x8c8/0x2860 [ 30.833230] __do_softirq+0x1b7/0x7d4 [ 30.833674] [ 30.833866] Last potentially related work creation: [ 30.834389] kasan_save_stack+0x22/0x50 [ 30.834869] __kasan_record_aux_stack+0x8e/0xa0 [ 30.835399] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.835990] remove_vma+0x139/0x170 [ 30.836399] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.836909] do_vmi_munmap+0x1f1/0x2b0 [ 30.837341] __vm_munmap+0x138/0x3a0 [ 30.837778] __x64_sys_munmap+0x59/0x80 [ 30.838228] do_syscall_64+0x3f/0x90 [ 30.838683] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.839262] [ 30.839465] Second to last potentially related work creation: [ 30.840122] kasan_save_stack+0x22/0x50 [ 30.840611] __kasan_record_aux_stack+0x8e/0xa0 [ 30.841151] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.841761] remove_vma+0x139/0x170 [ 30.842188] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.842735] do_vmi_munmap+0x1f1/0x2b0 [ 30.843196] mmap_region+0x1f9/0x2660 [ 30.843684] do_mmap+0x854/0xf00 [ 30.844096] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.844563] ksys_mmap_pgoff+0x3af/0x500 [ 30.845049] do_syscall_64+0x3f/0x90 [ 30.845495] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.846104] [ 30.846303] The buggy address belongs to the object at ffff88800dd95570 [ 30.846303] which belongs to the cache vm_area_struct of size 168 [ 30.847765] The buggy address is located 88 bytes inside of [ 30.847765] freed 168-byte region [ffff88800dd95570, ffff88800dd95618) [ 30.849177] [ 30.849384] The buggy address belongs to the physical page: [ 30.850040] page:000000002ec9df1f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xdd95 [ 30.851079] memcg:ffff88800dfa4e01 [ 30.851500] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.852119] page_type: 0xffffffff() [ 30.852528] raw: 0100000000000200 ffff8880087a0c80 ffffea000037f900 dead000000000002 [ 30.853377] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800dfa4e01 [ 30.854208] page dumped because: kasan: bad access detected [ 30.854812] [ 30.855009] Memory state around the buggy address: [ 30.855548] ffff88800dd95480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.856350] ffff88800dd95500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.857146] >ffff88800dd95580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.857927] ^ [ 30.858529] ffff88800dd95600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 30.859309] ffff88800dd95680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.860131] ================================================================== [ 30.861093] Disabling lock debugging due to kernel taint [ 32.563083] BUG: Bad rss-counter state mm:000000007554a814 type:MM_FILEPAGES val:33 [ 32.564212] BUG: Bad rss-counter state mm:000000007554a814 type:MM_ANONPAGES val:22 [ 33.043904] BUG: Bad rss-counter state mm:00000000ec181f3c type:MM_FILEPAGES val:33 [ 33.045094] BUG: Bad rss-counter state mm:00000000ec181f3c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4251' (ECDSA) to the list of known hosts. 2023/06/21 01:21:31 fuzzer started 2023/06/21 01:21:31 dialing manager at localhost:36067 2023/06/21 01:21:31 checking machine... 2023/06/21 01:21:31 checking revisions... [ 33.752375] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:21:31 testing simple program... [ 33.798717] cgroup: Unknown subsys name 'net' [ 33.855706] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:21:31 Registers: info registers vcpu 0 RAX=fffffffffffffdd0 RBX=00005629dc9b7d60 RCX=0000000000000000 RDX=fffffffffffffdd0 RSI=00005629dc9d6840 RDI=00000000ffffffff RBP=00007ffdf24e3060 RSP=00007ffdf24e2ef8 R8 =0000000000000000 R9 =ffffffffffffff01 R10=0000000000000000 R11=0000000000000000 R12=00000000ffffffff R13=00000000fffffffa R14=00005629dc9be6b0 R15=0000000000000002 RIP=00007f9cdbb55fc7 RFL=00000286 [--S--P-] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 0000000000000000 00000000 00000000 CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA] SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA] DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f9cdb364900 00000000 00000000 GS =0000 0000000000000000 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=000055c7e0957748 CR3=000000000d5d8000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=4a5e1c02ef264c8d00000000000ae988 XMM05=77b158568d22d9cb0000000000133b08 XMM06=4fda316b135da52b0000000000132ba8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 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=00007ffcc5ccb688 CR3=000000000dd90000 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=2030333a31323a3130203132206e754a XMM01=657463656e6e6f63736944203a5d3932 XMM02=302e303120746f6f722072657375206d XMM03=203a5d3932325b646873732072656c6c XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732030333a31323a3130203132 XMM08=3d656e696c646d632022656369767265 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000