syzkaller login: [ 212.678272] BUG: Bad rss-counter state mm:000000001bfd5500 type:MM_FILEPAGES val:33 [ 212.680419] BUG: Bad rss-counter state mm:000000001bfd5500 type:MM_ANONPAGES val:22 [ 212.857218] ================================================================== [ 212.858189] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 212.859177] Read of size 8 at addr ffff88800e6c2c20 by task sshd/219 [ 212.859966] [ 212.860340] CPU: 1 PID: 219 Comm: sshd Tainted: G L 6.4.0-rc7-next-20230619 #1 [ 212.861392] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 212.862402] Call Trace: [ 212.862746] [ 212.863041] dump_stack_lvl+0x91/0xf0 [ 212.863546] print_report+0xcc/0x620 [ 212.864045] ? __virt_addr_valid+0x102/0x340 [ 212.864625] ? vma_interval_tree_remove+0xc75/0xec0 [ 212.865269] ? vma_interval_tree_remove+0xc75/0xec0 [ 212.865902] kasan_report+0xbe/0xf0 [ 212.866395] ? vma_interval_tree_remove+0xc75/0xec0 [ 212.867065] vma_interval_tree_remove+0xc75/0xec0 [ 212.867684] vma_prepare+0xc54/0x11a0 [ 212.868176] __split_vma+0x5af/0x950 [ 212.868669] ? __pfx___split_vma+0x10/0x10 [ 212.869213] ? find_held_lock+0x2c/0x110 [ 212.869753] do_vmi_align_munmap+0x2ba/0x11f0 [ 212.870336] ? lock_is_held_type+0x9f/0x120 [ 212.870906] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 212.871537] ? mtree_range_walk+0x632/0x900 [ 212.872104] ? mas_walk+0x5c7/0x7c0 [ 212.872592] do_vmi_munmap+0x1f1/0x2b0 [ 212.873097] mmap_region+0x1f9/0x2660 [ 212.873596] ? vm_mmap_pgoff+0x15c/0x3a0 [ 212.874120] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 212.874889] ? __pfx_lock_acquire+0x10/0x10 [ 212.875443] ? __pfx_mmap_region+0x10/0x10 [ 212.876003] ? security_mmap_addr+0x7d/0xa0 [ 212.876547] ? get_unmapped_area+0x1f5/0x3f0 [ 212.877109] do_mmap+0x854/0xf00 [ 212.877564] vm_mmap_pgoff+0x1a6/0x3a0 [ 212.878075] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 212.878715] ksys_mmap_pgoff+0x3af/0x500 [ 212.879235] do_syscall_64+0x3f/0x90 [ 212.879713] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 212.880372] RIP: 0033:0x7fe6d7d23d82 [ 212.880840] 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 [ 212.883018] RSP: 002b:00007fff1b5c07d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 212.883939] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe6d7d23d82 [ 212.884792] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe6d715d000 [ 212.885654] RBP: 00007fe6d715d000 R08: 0000000000000009 R09: 0000000000001000 [ 212.886533] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556471262f70 [ 212.887383] R13: 00007fff1b5c07f0 R14: 00007fff1b5c0820 R15: 00007fff1b5c0b80 [ 212.888235] [ 212.888527] [ 212.888742] Allocated by task 212: [ 212.889171] kasan_save_stack+0x22/0x50 [ 212.889672] kasan_set_track+0x25/0x30 [ 212.890162] __kasan_slab_alloc+0x59/0x70 [ 212.890695] kmem_cache_alloc+0x16b/0x370 [ 212.891216] vm_area_dup+0x20/0x160 [ 212.891668] __split_vma+0x170/0x950 [ 212.892133] split_vma+0xc6/0x110 [ 212.892572] mprotect_fixup+0x8d2/0xb30 [ 212.893076] do_mprotect_pkey+0x87e/0xd40 [ 212.893594] __x64_sys_mprotect+0x78/0xc0 [ 212.894113] do_syscall_64+0x3f/0x90 [ 212.894607] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 212.895242] [ 212.895460] Freed by task 212: [ 212.895850] kasan_save_stack+0x22/0x50 [ 212.896358] kasan_set_track+0x25/0x30 [ 212.896849] kasan_save_free_info+0x2b/0x50 [ 212.897381] __kasan_slab_free+0x10a/0x190 [ 212.897917] kmem_cache_free+0x10d/0x4d0 [ 212.898426] rcu_core+0x8c8/0x2860 [ 212.898887] __do_softirq+0x1b7/0x7d4 [ 212.899367] [ 212.899583] Last potentially related work creation: [ 212.900165] kasan_save_stack+0x22/0x50 [ 212.900669] __kasan_record_aux_stack+0x8e/0xa0 [ 212.901241] __call_rcu_common.constprop.0+0x6a/0xb90 [ 212.901985] remove_vma+0x139/0x170 [ 212.902459] do_vmi_align_munmap+0xd4a/0x11f0 [ 212.903041] do_vmi_munmap+0x1f1/0x2b0 [ 212.903552] __vm_munmap+0x138/0x3a0 [ 212.904019] __x64_sys_munmap+0x59/0x80 [ 212.904537] do_syscall_64+0x3f/0x90 [ 212.905018] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 212.905671] [ 212.905888] The buggy address belongs to the object at ffff88800e6c2bc8 [ 212.905888] which belongs to the cache vm_area_struct of size 168 [ 212.907449] The buggy address is located 88 bytes inside of [ 212.907449] freed 168-byte region [ffff88800e6c2bc8, ffff88800e6c2c70) [ 212.908907] [ 212.909130] The buggy address belongs to the physical page: [ 212.909809] page:00000000846ea587 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe6c2 [ 212.910972] memcg:ffff88800ed1c801 [ 212.911412] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 212.912137] page_type: 0xffffffff() [ 212.912602] raw: 0100000000000200 ffff88800879fc80 ffffea000039ad80 dead000000000003 [ 212.913543] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ed1c801 [ 212.914479] page dumped because: kasan: bad access detected [ 212.915148] [ 212.915362] Memory state around the buggy address: [ 212.915950] ffff88800e6c2b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 212.916812] ffff88800e6c2b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 212.917690] >ffff88800e6c2c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 212.918562] ^ [ 212.919114] ffff88800e6c2c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb [ 212.920005] ffff88800e6c2d00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc [ 212.920888] ================================================================== [ 212.921934] Disabling lock debugging due to kernel taint [ 214.911625] BUG: Bad rss-counter state mm:000000000d07c3be type:MM_FILEPAGES val:33 [ 214.912643] BUG: Bad rss-counter state mm:000000000d07c3be type:MM_ANONPAGES val:22 [ 215.405193] BUG: Bad rss-counter state mm:0000000036dc1d0d type:MM_FILEPAGES val:33 [ 215.406352] BUG: Bad rss-counter state mm:0000000036dc1d0d type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:2378' (ECDSA) to the list of known hosts. 2023/06/20 04:16:20 fuzzer started 2023/06/20 04:16:20 dialing manager at localhost:44161 2023/06/20 04:16:20 checking machine... 2023/06/20 04:16:20 checking revisions... [ 216.115097] kmemleak: Automatic memory scanning thread ended 2023/06/20 04:16:20 testing simple program... [ 216.165430] cgroup: Unknown subsys name 'net' [ 216.232725] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 04:13:18 Registers: info registers vcpu 0 RAX=ffff88806ce35000 RBX=0000000000000000 RCX=ffffffff8450c50e RDX=ffffed100d9c6a01 RSI=0000000000000004 RDI=ffffffff812889a5 RBP=dffffc0000000000 RSP=ffffffff85407e10 R8 =0000000000000000 R9 =ffffed100d9c6a00 R10=ffff88806ce35003 R11=ffff888008c58000 R12=ffffffff85d3bed0 R13=1ffffffff0a80fc7 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 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=00007fa7293e8300 CR3=000000000d672000 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=00000000000000000000000000000000 XMM01=22f42f4642ace883bd485f2d7bba3327 XMM02=000000000012fa60eff9b2d0a8fce9cb XMM03=000000000012fb302c67c8bc2e329bc3 XMM04=abcbc55e25b6f18700000000000ae988 XMM05=e3be52c27a3438c00000000000147530 XMM06=806171799158d9670000000000146260 XMM07=e042d86d42eb936e0000000000136be0 XMM08=721bf9c36cf5644c000000000012fb30 XMM09=00000000000000000000000000000000 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=00007ffd1d524000 CR3=000000000f27a000 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