syzkaller login: [ 61.779061] BUG: Bad rss-counter state mm:00000000e5ee7bb5 type:MM_FILEPAGES val:33 [ 61.780078] BUG: Bad rss-counter state mm:00000000e5ee7bb5 type:MM_ANONPAGES val:22 [ 61.874384] ================================================================== [ 61.875300] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 61.876233] Read of size 8 at addr ffff88800e3536b0 by task sshd/220 [ 61.876997] [ 61.877215] CPU: 1 PID: 220 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 61.878441] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 61.879407] Call Trace: [ 61.879723] [ 61.880130] dump_stack_lvl+0x91/0xf0 [ 61.880736] print_report+0xcc/0x620 [ 61.881350] ? __virt_addr_valid+0x102/0x340 [ 61.882006] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.882775] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.883545] kasan_report+0xbe/0xf0 [ 61.884125] ? vma_interval_tree_remove+0xc75/0xec0 [ 61.884919] vma_interval_tree_remove+0xc75/0xec0 [ 61.885685] vma_prepare+0xc54/0x11a0 [ 61.886300] __split_vma+0x5af/0x950 [ 61.886879] ? __pfx___split_vma+0x10/0x10 [ 61.887534] ? find_held_lock+0x2c/0x110 [ 61.888176] do_vmi_align_munmap+0x2ba/0x11f0 [ 61.888872] ? lock_is_held_type+0x9f/0x120 [ 61.889514] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 61.890119] ? mtree_range_walk+0x632/0x900 [ 61.890675] ? mas_walk+0x5c7/0x7c0 [ 61.891149] do_vmi_munmap+0x1f1/0x2b0 [ 61.891653] mmap_region+0x1f9/0x2660 [ 61.892137] ? vm_mmap_pgoff+0x15c/0x3a0 [ 61.892652] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 61.893406] ? __pfx_lock_acquire+0x10/0x10 [ 61.893932] ? __pfx_mmap_region+0x10/0x10 [ 61.894486] ? security_mmap_addr+0x7d/0xa0 [ 61.895076] ? get_unmapped_area+0x1f5/0x3f0 [ 61.895663] do_mmap+0x854/0xf00 [ 61.896121] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.896653] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 61.897291] ksys_mmap_pgoff+0x3af/0x500 [ 61.897821] do_syscall_64+0x3f/0x90 [ 61.898339] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.899105] RIP: 0033:0x7f89b5e4dd82 [ 61.899742] 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 [ 61.902663] RSP: 002b:00007fffcd84dda8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 61.903632] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f89b5e4dd82 [ 61.904526] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f89b5287000 [ 61.905446] RBP: 00007f89b5287000 R08: 0000000000000009 R09: 0000000000001000 [ 61.906345] R10: 0000000000000812 R11: 0000000000000206 R12: 000055729cb05f60 [ 61.907260] R13: 00007fffcd84ddc0 R14: 00007fffcd84ddf0 R15: 00007fffcd84e150 [ 61.908148] [ 61.908474] [ 61.908695] Allocated by task 213: [ 61.909155] kasan_save_stack+0x22/0x50 [ 61.909693] kasan_set_track+0x25/0x30 [ 61.910218] __kasan_slab_alloc+0x59/0x70 [ 61.910776] kmem_cache_alloc+0x16b/0x370 [ 61.911334] vm_area_dup+0x20/0x160 [ 61.911805] __split_vma+0x170/0x950 [ 61.912303] split_vma+0xc6/0x110 [ 61.912761] mprotect_fixup+0x8d2/0xb30 [ 61.913312] do_mprotect_pkey+0x87e/0xd40 [ 61.913856] __x64_sys_mprotect+0x78/0xc0 [ 61.914411] do_syscall_64+0x3f/0x90 [ 61.914901] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.915585] [ 61.915811] Freed by task 203: [ 61.916233] kasan_save_stack+0x22/0x50 [ 61.916783] kasan_set_track+0x25/0x30 [ 61.917327] kasan_save_free_info+0x2b/0x50 [ 61.917892] __kasan_slab_free+0x10a/0x190 [ 61.918535] kmem_cache_free+0x10d/0x4d0 [ 61.919064] rcu_core+0x8c8/0x2860 [ 61.919546] __do_softirq+0x1b7/0x7d4 [ 61.920041] [ 61.920294] Last potentially related work creation: [ 61.920911] kasan_save_stack+0x22/0x50 [ 61.921481] __kasan_record_aux_stack+0x8e/0xa0 [ 61.922075] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.922761] remove_vma+0x139/0x170 [ 61.923246] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.923825] do_vmi_munmap+0x1f1/0x2b0 [ 61.924339] __vm_munmap+0x138/0x3a0 [ 61.924828] __x64_sys_munmap+0x59/0x80 [ 61.925371] do_syscall_64+0x3f/0x90 [ 61.925868] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.926548] [ 61.926777] Second to last potentially related work creation: [ 61.927492] kasan_save_stack+0x22/0x50 [ 61.928021] __kasan_record_aux_stack+0x8e/0xa0 [ 61.928632] __call_rcu_common.constprop.0+0x6a/0xb90 [ 61.929330] remove_vma+0x139/0x170 [ 61.929798] do_vmi_align_munmap+0xd4a/0x11f0 [ 61.930385] do_vmi_munmap+0x1f1/0x2b0 [ 61.930885] mmap_region+0x1f9/0x2660 [ 61.931390] do_mmap+0x854/0xf00 [ 61.931839] vm_mmap_pgoff+0x1a6/0x3a0 [ 61.932366] ksys_mmap_pgoff+0x3af/0x500 [ 61.932884] do_syscall_64+0x3f/0x90 [ 61.933419] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 61.934093] [ 61.934337] The buggy address belongs to the object at ffff88800e353658 [ 61.934337] which belongs to the cache vm_area_struct of size 168 [ 61.935884] The buggy address is located 88 bytes inside of [ 61.935884] freed 168-byte region [ffff88800e353658, ffff88800e353700) [ 61.937400] [ 61.937628] The buggy address belongs to the physical page: [ 61.938342] page:00000000b88d2559 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe353 [ 61.939501] memcg:ffff88800e109301 [ 61.939944] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 61.940691] page_type: 0xffffffff() [ 61.941195] raw: 0100000000000200 ffff88800879fc80 0000000000000000 dead000000000001 [ 61.942176] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e109301 [ 61.943142] page dumped because: kasan: bad access detected [ 61.943848] [ 61.944071] Memory state around the buggy address: [ 61.944681] ffff88800e353580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 61.945605] ffff88800e353600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb [ 61.946533] >ffff88800e353680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.947442] ^ [ 61.948059] ffff88800e353700: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 [ 61.948977] ffff88800e353780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 61.949887] ================================================================== [ 61.950879] Disabling lock debugging due to kernel taint [ 64.252287] BUG: Bad rss-counter state mm:0000000028d5c676 type:MM_FILEPAGES val:33 [ 64.253447] BUG: Bad rss-counter state mm:0000000028d5c676 type:MM_ANONPAGES val:22 [ 64.712195] BUG: Bad rss-counter state mm:00000000ca9195e8 type:MM_FILEPAGES val:33 [ 64.713468] BUG: Bad rss-counter state mm:00000000ca9195e8 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:18673' (ECDSA) to the list of known hosts. 2023/06/19 15:16:23 fuzzer started 2023/06/19 15:16:23 dialing manager at localhost:44161 2023/06/19 15:16:23 checking machine... 2023/06/19 15:16:23 checking revisions... [ 65.432927] kmemleak: Automatic memory scanning thread ended 2023/06/19 15:16:23 testing simple program... [ 65.476635] cgroup: Unknown subsys name 'net' [ 65.543463] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 15:15:52 Registers: info registers vcpu 0 RAX=ffffffff836507a2 RBX=ffffffff813ad420 RCX=0000000000000001 RDX=1ffff11001aece4c RSI=ffffffff836507a2 RDI=ffff88800d7672d0 RBP=ffff88800d7672a0 RSP=ffff88800d767200 R8 =0000000000000001 R9 =ffff88800d767248 R10=0000000000038001 R11=000000000008b8fa R12=ffff88800d7672d0 R13=0000000000000000 R14=ffff88800ff23680 R15=0000000000092cc0 RIP=ffffffff84532440 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 00007f678e86a900 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=00007f678dce0ac0 CR3=000000000f05e000 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=756f6a2f646d65747379732f6e75722f XMM01=00676f6c7379732f6c616e72756f6a2f XMM02=756f6a2f646d65747379732f6e75722f XMM03=006c616e72756f6a2f646d6574737973 XMM04=f014543e024cccc500000000000ae988 XMM05=b9d9d43ab1764225000000000013b260 XMM06=19e9129bd510f235000000000013a0f8 XMM07=fb795ef6d65770560000000000128c08 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff888016cd8000 RSI=ffffffff8186c1ae RDI=ffff888008c14aa0 RBP=ffff88800c72f400 RSP=ffff888019df7dd8 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000000 R11=00000000000b6996 R12=0000000000000003 R13=ffff88800c72f450 R14=ffff888015e0cb80 R15=ffff88800c72f580 RIP=ffffffff818f7944 RFL=00000293 [--S-A-C] 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 00007f08509cc900 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=00007fffaa414000 CR3=0000000018086000 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