syzkaller login: [ 30.738750] BUG: Bad rss-counter state mm:00000000a63de059 type:MM_FILEPAGES val:33 [ 30.740225] BUG: Bad rss-counter state mm:00000000a63de059 type:MM_ANONPAGES val:22 [ 30.892231] ================================================================== [ 30.893153] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.894105] Read of size 8 at addr ffff88800f2b5140 by task sshd/220 [ 30.894890] [ 30.895108] CPU: 1 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.896134] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.897122] Call Trace: [ 30.897447] [ 30.897733] dump_stack_lvl+0x91/0xf0 [ 30.898236] print_report+0xcc/0x620 [ 30.898720] ? __virt_addr_valid+0x102/0x340 [ 30.899301] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.899940] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.900564] kasan_report+0xbe/0xf0 [ 30.901045] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.901665] vma_interval_tree_remove+0xc75/0xec0 [ 30.902274] vma_prepare+0xc54/0x11a0 [ 30.902755] __split_vma+0x5af/0x950 [ 30.903237] ? __pfx___split_vma+0x10/0x10 [ 30.903780] ? find_held_lock+0x2c/0x110 [ 30.904305] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.904874] ? lock_is_held_type+0x9f/0x120 [ 30.905413] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.906020] ? mtree_range_walk+0x632/0x900 [ 30.906576] ? mas_walk+0x5c7/0x7c0 [ 30.907054] do_vmi_munmap+0x1f1/0x2b0 [ 30.907563] mmap_region+0x1f9/0x2660 [ 30.908048] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.908561] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.909304] ? __pfx_lock_acquire+0x10/0x10 [ 30.909867] ? __pfx_mmap_region+0x10/0x10 [ 30.910406] ? security_mmap_addr+0x7d/0xa0 [ 30.910945] ? get_unmapped_area+0x1f5/0x3f0 [ 30.911520] do_mmap+0x854/0xf00 [ 30.911963] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.912466] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.913040] ksys_mmap_pgoff+0x3af/0x500 [ 30.913554] do_syscall_64+0x3f/0x90 [ 30.914038] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.914687] RIP: 0033:0x7f2d47fe4d82 [ 30.915149] 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 [ 30.917447] RSP: 002b:00007ffe55b796b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.918410] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f2d47fe4d82 [ 30.919326] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f2d4741e000 [ 30.920225] RBP: 00007f2d4741e000 R08: 0000000000000009 R09: 0000000000001000 [ 30.921127] R10: 0000000000000812 R11: 0000000000000206 R12: 000055b8f3ab9ec0 [ 30.922031] R13: 00007ffe55b796d0 R14: 00007ffe55b79700 R15: 00007ffe55b79a60 [ 30.922933] [ 30.923251] [ 30.923480] Allocated by task 213: [ 30.923934] kasan_save_stack+0x22/0x50 [ 30.924462] kasan_set_track+0x25/0x30 [ 30.924984] __kasan_slab_alloc+0x59/0x70 [ 30.925538] kmem_cache_alloc+0x16b/0x370 [ 30.926080] vm_area_dup+0x20/0x160 [ 30.926551] __split_vma+0x170/0x950 [ 30.927046] split_vma+0xc6/0x110 [ 30.927522] mprotect_fixup+0x8d2/0xb30 [ 30.928050] do_mprotect_pkey+0x87e/0xd40 [ 30.928599] __x64_sys_mprotect+0x78/0xc0 [ 30.929145] do_syscall_64+0x3f/0x90 [ 30.929645] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.930319] [ 30.930543] Freed by task 213: [ 30.930959] kasan_save_stack+0x22/0x50 [ 30.931514] kasan_set_track+0x25/0x30 [ 30.932031] kasan_save_free_info+0x2b/0x50 [ 30.932591] __kasan_slab_free+0x10a/0x190 [ 30.933152] kmem_cache_free+0x10d/0x4d0 [ 30.933690] rcu_core+0x8c8/0x2860 [ 30.934154] __do_softirq+0x1b7/0x7d4 [ 30.934656] [ 30.934883] Last potentially related work creation: [ 30.935515] kasan_save_stack+0x22/0x50 [ 30.936045] __kasan_record_aux_stack+0x8e/0xa0 [ 30.936660] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.937402] remove_vma+0x139/0x170 [ 30.937879] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.938463] do_vmi_munmap+0x1f1/0x2b0 [ 30.938975] __vm_munmap+0x138/0x3a0 [ 30.939483] __x64_sys_munmap+0x59/0x80 [ 30.940008] do_syscall_64+0x3f/0x90 [ 30.940514] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.941194] [ 30.941426] The buggy address belongs to the object at ffff88800f2b50e8 [ 30.941426] which belongs to the cache vm_area_struct of size 168 [ 30.943005] The buggy address is located 88 bytes inside of [ 30.943005] freed 168-byte region [ffff88800f2b50e8, ffff88800f2b5190) [ 30.944509] [ 30.944744] The buggy address belongs to the physical page: [ 30.945448] page:000000006a89eb5c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf2b5 [ 30.946599] memcg:ffff88800c5b0d01 [ 30.947049] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.947754] page_type: 0xffffffff() [ 30.948232] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.949205] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c5b0d01 [ 30.950172] page dumped because: kasan: bad access detected [ 30.950883] [ 30.951107] Memory state around the buggy address: [ 30.951732] ffff88800f2b5000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.952647] ffff88800f2b5080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb [ 30.953560] >ffff88800f2b5100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.954461] ^ [ 30.955138] ffff88800f2b5180: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb [ 30.956068] ffff88800f2b5200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 30.956970] ================================================================== [ 30.958109] Disabling lock debugging due to kernel taint [ 32.840138] BUG: Bad rss-counter state mm:0000000001bb2bd9 type:MM_FILEPAGES val:33 [ 32.841058] BUG: Bad rss-counter state mm:0000000001bb2bd9 type:MM_ANONPAGES val:22 [ 33.303682] BUG: Bad rss-counter state mm:000000002f7ab707 type:MM_FILEPAGES val:33 [ 33.305463] BUG: Bad rss-counter state mm:000000002f7ab707 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:6062' (ECDSA) to the list of known hosts. 2023/06/19 22:33:50 fuzzer started 2023/06/19 22:33:50 dialing manager at localhost:44161 2023/06/19 22:33:50 checking machine... 2023/06/19 22:33:50 checking revisions... [ 34.037597] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:33:50 testing simple program... [ 34.073971] cgroup: Unknown subsys name 'net' [ 34.112973] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:33:49 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff88806ce09b60 RCX=ffff88806ce09b38 RDX=0000000000000000 RSI=ffffffff813ad6d0 RDI=ffff88806ce09b6c RBP=0000000000000000 RSP=ffff88806ce09a78 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=0000000000003c0d R12=ffff88806ce09b60 R13=0000000000000000 R14=ffff8880102e3680 R15=ffff888019d087a0 RIP=ffffffff813ad517 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 00007f7a10142900 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=00007f7a0f53d1e0 CR3=000000000d7b8000 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=b3e123d581c357d600000000000ae988 XMM05=c5677897507897df0000000000134738 XMM06=4fda316b135da52b0000000000133528 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=1ffff11002d37d96 RBX=ffff88801a23a0d8 RCX=ffff8880169becb0 RDX=ffffffff818101af RSI=ffff8880169becb0 RDI=ffff88800879fc80 RBP=0000000000000000 RSP=ffff88801cd97c78 R8 =ffff8880169becb0 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=0000000000120011 R12=dffffc0000000000 R13=ffff88801cd97cb8 R14=ffff88800879fc80 R15=ffff8880169becb0 RIP=ffffffff818101c8 RFL=00000216 [----AP-] 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 00007f443467b900 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=00007ffc73366000 CR3=000000000c7d6000 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