syzkaller login: [ 39.464957] BUG: Bad rss-counter state mm:00000000f16a5b98 type:MM_FILEPAGES val:33 [ 39.466158] BUG: Bad rss-counter state mm:00000000f16a5b98 type:MM_ANONPAGES val:22 [ 39.503492] ================================================================== [ 39.504536] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 39.505679] Read of size 8 at addr ffff8880162dd3f8 by task sshd/219 [ 39.506665] [ 39.506917] CPU: 0 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 39.507934] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 39.509111] Call Trace: [ 39.509510] [ 39.509846] dump_stack_lvl+0x91/0xf0 [ 39.510421] print_report+0xcc/0x620 [ 39.510985] ? __virt_addr_valid+0x102/0x340 [ 39.511645] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.512371] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.513102] kasan_report+0xbe/0xf0 [ 39.513673] ? vma_interval_tree_remove+0xc75/0xec0 [ 39.514399] vma_interval_tree_remove+0xc75/0xec0 [ 39.515104] vma_prepare+0xc54/0x11a0 [ 39.515669] __split_vma+0x5af/0x950 [ 39.516222] ? __pfx___split_vma+0x10/0x10 [ 39.516848] ? find_held_lock+0x2c/0x110 [ 39.517478] do_vmi_align_munmap+0x2ba/0x11f0 [ 39.518151] ? lock_is_held_type+0x9f/0x120 [ 39.518781] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 39.519494] ? mtree_range_walk+0x632/0x900 [ 39.520142] ? mas_walk+0x5c7/0x7c0 [ 39.520694] do_vmi_munmap+0x1f1/0x2b0 [ 39.521273] mmap_region+0x1f9/0x2660 [ 39.521853] ? vm_mmap_pgoff+0x15c/0x3a0 [ 39.522452] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 39.523292] ? __pfx_lock_acquire+0x10/0x10 [ 39.523917] ? __pfx_mmap_region+0x10/0x10 [ 39.524541] ? security_mmap_addr+0x7d/0xa0 [ 39.525171] ? get_unmapped_area+0x1f5/0x3f0 [ 39.525832] do_mmap+0x854/0xf00 [ 39.526345] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.526926] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 39.527595] ksys_mmap_pgoff+0x3af/0x500 [ 39.528191] do_syscall_64+0x3f/0x90 [ 39.528750] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.529528] RIP: 0033:0x7f1f345d0d82 [ 39.530066] 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 [ 39.532619] RSP: 002b:00007ffd5d5c7768 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 39.533707] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f1f345d0d82 [ 39.534722] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f1f33a0a000 [ 39.535737] RBP: 00007f1f33a0a000 R08: 0000000000000009 R09: 0000000000001000 [ 39.536747] R10: 0000000000000812 R11: 0000000000000206 R12: 000055cdc12c5ec0 [ 39.537698] R13: 00007ffd5d5c7780 R14: 00007ffd5d5c77b0 R15: 00007ffd5d5c7b10 [ 39.538535] [ 39.538817] [ 39.539029] Allocated by task 212: [ 39.539446] kasan_save_stack+0x22/0x50 [ 39.539937] kasan_set_track+0x25/0x30 [ 39.540403] __kasan_slab_alloc+0x59/0x70 [ 39.540895] kmem_cache_alloc+0x16b/0x370 [ 39.541395] vm_area_dup+0x20/0x160 [ 39.541828] __split_vma+0x170/0x950 [ 39.542272] split_vma+0xc6/0x110 [ 39.542692] mprotect_fixup+0x8d2/0xb30 [ 39.543166] do_mprotect_pkey+0x87e/0xd40 [ 39.543658] __x64_sys_mprotect+0x78/0xc0 [ 39.544155] do_syscall_64+0x3f/0x90 [ 39.544606] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.545207] [ 39.545428] Freed by task 212: [ 39.545797] kasan_save_stack+0x22/0x50 [ 39.546283] kasan_set_track+0x25/0x30 [ 39.546756] kasan_save_free_info+0x2b/0x50 [ 39.547280] __kasan_slab_free+0x10a/0x190 [ 39.547800] kmem_cache_free+0x10d/0x4d0 [ 39.548297] rcu_core+0x8c8/0x2860 [ 39.548722] __do_softirq+0x1b7/0x7d4 [ 39.549188] [ 39.549402] Last potentially related work creation: [ 39.549964] kasan_save_stack+0x22/0x50 [ 39.550455] __kasan_record_aux_stack+0x8e/0xa0 [ 39.551009] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.551624] remove_vma+0x139/0x170 [ 39.552059] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.552601] do_vmi_munmap+0x1f1/0x2b0 [ 39.553062] __vm_munmap+0x138/0x3a0 [ 39.553521] __x64_sys_munmap+0x59/0x80 [ 39.554004] do_syscall_64+0x3f/0x90 [ 39.554459] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.555075] [ 39.555282] Second to last potentially related work creation: [ 39.555938] kasan_save_stack+0x22/0x50 [ 39.556431] __kasan_record_aux_stack+0x8e/0xa0 [ 39.556983] __call_rcu_common.constprop.0+0x6a/0xb90 [ 39.557616] remove_vma+0x139/0x170 [ 39.558049] do_vmi_align_munmap+0xd4a/0x11f0 [ 39.558593] do_vmi_munmap+0x1f1/0x2b0 [ 39.559063] mmap_region+0x1f9/0x2660 [ 39.559521] do_mmap+0x854/0xf00 [ 39.559932] vm_mmap_pgoff+0x1a6/0x3a0 [ 39.560397] ksys_mmap_pgoff+0x3af/0x500 [ 39.560877] do_syscall_64+0x3f/0x90 [ 39.561330] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 39.561947] [ 39.562154] The buggy address belongs to the object at ffff8880162dd3a0 [ 39.562154] which belongs to the cache vm_area_struct of size 168 [ 39.563561] The buggy address is located 88 bytes inside of [ 39.563561] freed 168-byte region [ffff8880162dd3a0, ffff8880162dd448) [ 39.564907] [ 39.565114] The buggy address belongs to the physical page: [ 39.565768] page:000000005ae31f38 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x162dd [ 39.566829] memcg:ffff88800f14fe01 [ 39.567239] flags: 0x100000000000200(slab|node=0|zone=1) [ 39.567856] page_type: 0xffffffff() [ 39.568297] raw: 0100000000000200 ffff88800879fc80 dead000000000100 dead000000000122 [ 39.569176] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800f14fe01 [ 39.570054] page dumped because: kasan: bad access detected [ 39.570693] [ 39.570903] Memory state around the buggy address: [ 39.571467] ffff8880162dd280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb [ 39.572291] ffff8880162dd300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [ 39.573119] >ffff8880162dd380: fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb fb [ 39.573947] ^ [ 39.574759] ffff8880162dd400: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc [ 39.575594] ffff8880162dd480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 39.576421] ================================================================== [ 39.577443] Disabling lock debugging due to kernel taint [ 41.474149] BUG: Bad rss-counter state mm:00000000a8d3cac6 type:MM_FILEPAGES val:33 [ 41.475301] BUG: Bad rss-counter state mm:00000000a8d3cac6 type:MM_ANONPAGES val:22 [ 41.879027] BUG: Bad rss-counter state mm:000000000a652a3e type:MM_FILEPAGES val:33 [ 41.880018] BUG: Bad rss-counter state mm:000000000a652a3e type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:10858' (ECDSA) to the list of known hosts. 2023/06/19 13:26:02 fuzzer started 2023/06/19 13:26:02 dialing manager at localhost:44161 2023/06/19 13:26:02 checking machine... 2023/06/19 13:26:02 checking revisions... [ 42.587138] kmemleak: Automatic memory scanning thread ended 2023/06/19 13:26:02 testing simple program... [ 42.640712] cgroup: Unknown subsys name 'net' [ 42.698872] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 13:25:52 Registers: info registers vcpu 0 RAX=dffffc0000000000 RBX=0000000000000001 RCX=1ffff11001a0b07a RDX=1ffff11001a0b087 RSI=0000000000000004 RDI=ffff88800d058440 RBP=0000000000000038 RSP=ffff88801467f848 R8 =0000000000000001 R9 =ffffed1001a0b084 R10=ffff88800d058423 R11=00000000000b6c88 R12=ffff8880193c5528 R13=0000000000000000 R14=ffff88800d0583d8 R15=ffff88800d058390 RIP=ffffffff818472d5 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f52813d1900 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=00007f52807ccf80 CR3=000000000f628000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=99af2b0d7f4e149d00000000000ae988 XMM05=e2066a0c9a371f3b0000000000135e10 XMM06=806171799158d9670000000000134c00 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=ffff88800f4e4e40 RCX=ffff88800844f780 RDX=ffffea00003d3900 RSI=ffff888013a17390 RDI=ffff88800844f780 RBP=0000000000000000 RSP=ffff88800e947a38 R8 =ffff88800f4e45f0 R9 =0000000000000000 R10=ffffea00004e85c0 R11=00000000800d0007 R12=dffffc0000000000 R13=ffff88800e947a78 R14=ffff88800844f780 R15=ffff888013a17390 RIP=ffffffff81810196 RFL=00000202 [-------] 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 00007fbcdb5bb900 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=00007fff61f9b000 CR3=0000000017c62000 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=635f6e6f69737365733a4d41503d706f XMM01=6f6c5f6d61702c78756e696c65735f6d XMM02=61702c74696d7265705f6d61702c7469 XMM03=655f6d61702c7374696d696c5f6d6170 XMM04=3d6c616e696d72657420322e322e302e XMM05=3d656d616e74736f682022646873732f XMM06=746f6f72223d746363612078756e696c XMM07=6e655f6d61702c7374696d696c5f6d61 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000