syzkaller login: [ 30.843190] BUG: Bad rss-counter state mm:0000000061a9c135 type:MM_FILEPAGES val:33 [ 30.844397] BUG: Bad rss-counter state mm:0000000061a9c135 type:MM_ANONPAGES val:22 [ 30.883622] ================================================================== [ 30.884626] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.885672] Read of size 8 at addr ffff88800ff3e6b0 by task sshd/220 [ 30.886485] [ 30.886707] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 30.887646] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.888658] Call Trace: [ 30.889008] [ 30.889304] dump_stack_lvl+0x91/0xf0 [ 30.889821] print_report+0xcc/0x620 [ 30.890332] ? __virt_addr_valid+0x102/0x340 [ 30.890913] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.891549] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.892222] kasan_report+0xbe/0xf0 [ 30.892710] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.893381] vma_interval_tree_remove+0xc75/0xec0 [ 30.894008] vma_prepare+0xc54/0x11a0 [ 30.894486] __split_vma+0x5af/0x950 [ 30.894968] ? __pfx___split_vma+0x10/0x10 [ 30.895489] ? find_held_lock+0x2c/0x110 [ 30.896064] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.896654] ? lock_is_held_type+0x9f/0x120 [ 30.897233] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.897849] ? mtree_range_walk+0x632/0x900 [ 30.898404] ? mas_walk+0x5c7/0x7c0 [ 30.898894] do_vmi_munmap+0x1f1/0x2b0 [ 30.899388] mmap_region+0x1f9/0x2660 [ 30.899894] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.900407] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.901189] ? __pfx_lock_acquire+0x10/0x10 [ 30.901752] ? __pfx_mmap_region+0x10/0x10 [ 30.902308] ? security_mmap_addr+0x7d/0xa0 [ 30.902856] ? get_unmapped_area+0x1f5/0x3f0 [ 30.903411] do_mmap+0x854/0xf00 [ 30.903865] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.904369] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.904983] ksys_mmap_pgoff+0x3af/0x500 [ 30.905514] do_syscall_64+0x3f/0x90 [ 30.906001] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.906647] RIP: 0033:0x7fe2847fad82 [ 30.907124] 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 [ 30.909337] RSP: 002b:00007ffd802f1068 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.910266] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fe2847fad82 [ 30.911144] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fe283c34000 [ 30.912047] RBP: 00007fe283c34000 R08: 0000000000000009 R09: 0000000000001000 [ 30.912940] R10: 0000000000000812 R11: 0000000000000206 R12: 0000556827feb980 [ 30.913805] R13: 00007ffd802f1080 R14: 00007ffd802f10b0 R15: 00007ffd802f1410 [ 30.914678] [ 30.914990] [ 30.915208] Allocated by task 213: [ 30.915646] kasan_save_stack+0x22/0x50 [ 30.916194] kasan_set_track+0x25/0x30 [ 30.916682] __kasan_slab_alloc+0x59/0x70 [ 30.917241] kmem_cache_alloc+0x16b/0x370 [ 30.917758] vm_area_dup+0x20/0x160 [ 30.918229] __split_vma+0x170/0x950 [ 30.918694] split_vma+0xc6/0x110 [ 30.919151] mprotect_fixup+0x8d2/0xb30 [ 30.919668] do_mprotect_pkey+0x87e/0xd40 [ 30.920244] __x64_sys_mprotect+0x78/0xc0 [ 30.920765] do_syscall_64+0x3f/0x90 [ 30.921276] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.921943] [ 30.922163] Freed by task 213: [ 30.922553] kasan_save_stack+0x22/0x50 [ 30.923083] kasan_set_track+0x25/0x30 [ 30.923583] kasan_save_free_info+0x2b/0x50 [ 30.924135] __kasan_slab_free+0x10a/0x190 [ 30.924671] kmem_cache_free+0x10d/0x4d0 [ 30.925205] rcu_core+0x8c8/0x2860 [ 30.925655] __do_softirq+0x1b7/0x7d4 [ 30.926142] [ 30.926355] Last potentially related work creation: [ 30.926967] kasan_save_stack+0x22/0x50 [ 30.927467] __kasan_record_aux_stack+0x8e/0xa0 [ 30.928071] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.928711] remove_vma+0x139/0x170 [ 30.929193] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.929751] do_vmi_munmap+0x1f1/0x2b0 [ 30.930244] __vm_munmap+0x138/0x3a0 [ 30.930717] __x64_sys_munmap+0x59/0x80 [ 30.931227] do_syscall_64+0x3f/0x90 [ 30.931711] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.932390] [ 30.932605] The buggy address belongs to the object at ffff88800ff3e658 [ 30.932605] which belongs to the cache vm_area_struct of size 168 [ 30.934115] The buggy address is located 88 bytes inside of [ 30.934115] freed 168-byte region [ffff88800ff3e658, ffff88800ff3e700) [ 30.935528] [ 30.935748] The buggy address belongs to the physical page: [ 30.936446] page:00000000533af786 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xff3e [ 30.937557] memcg:ffff8880169fc801 [ 30.937999] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.938639] page_type: 0xffffffff() [ 30.939105] raw: 0100000000000200 ffff8880087a0c80 ffffea0000259f40 dead000000000002 [ 30.940061] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff8880169fc801 [ 30.941003] page dumped because: kasan: bad access detected [ 30.941667] [ 30.941895] Memory state around the buggy address: [ 30.942478] ffff88800ff3e580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.943369] ffff88800ff3e600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.944259] >ffff88800ff3e680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.945140] ^ [ 30.945724] ffff88800ff3e700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 30.946589] ffff88800ff3e780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc [ 30.947449] ================================================================== [ 30.948582] Disabling lock debugging due to kernel taint [ 33.243309] BUG: Bad rss-counter state mm:00000000c70635bb type:MM_FILEPAGES val:33 [ 33.244079] BUG: Bad rss-counter state mm:00000000c70635bb type:MM_ANONPAGES val:22 [ 33.637350] BUG: Bad rss-counter state mm:000000005e55cf01 type:MM_FILEPAGES val:33 [ 33.638044] BUG: Bad rss-counter state mm:000000005e55cf01 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57700' (ECDSA) to the list of known hosts. 2023/06/21 01:11:51 fuzzer started 2023/06/21 01:11:51 dialing manager at localhost:36067 2023/06/21 01:11:51 checking machine... 2023/06/21 01:11:51 checking revisions... [ 34.269361] kmemleak: Automatic memory scanning thread ended 2023/06/21 01:11:51 testing simple program... [ 34.306183] cgroup: Unknown subsys name 'net' [ 34.336960] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:11:51 Registers: info registers vcpu 0 RAX=ffffffff854f6380 RBX=ffff88800dd88e00 RCX=1ffffffff0a9ec83 RDX=dffffc0000000000 RSI=0000000000000015 RDI=ffffffff854ee9e0 RBP=0000000000000000 RSP=ffff8880103a7890 R8 =0000000000000004 R9 =00000000000000e5 R10=0000000000000057 R11=0000000000000000 R12=0000000000000000 R13=00000000000000e5 R14=ffff8880103a7b80 R15=ffff88800fc93680 RIP=ffffffff8119ce94 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 00007f70d8d11900 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=00007f70d80fd9d0 CR3=000000000ded4000 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=d8fc7a7d8df49ec000000000000ae988 XMM05=a1c8077b8221e21600000000001326b0 XMM06=486ecf040aaad5b30000000000131758 XMM07=fb795ef6d65770560000000000121a50 XMM08=4f5453444600273d67736d000d0a0920 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffffffff813ad470 RCX=0000000000000001 RDX=ffff88801830fdd8 RSI=ffff88801830fda0 RDI=ffff88801830f168 RBP=ffff88801830f1f0 RSP=ffff88801830f158 R8 =0000000000000001 R9 =ffff88801830f198 R10=0000000000038001 R11=000000000001e427 R12=ffff88801830f220 R13=0000000000000000 R14=ffff88800977d1c0 R15=ffff888010358260 RIP=ffffffff810bd05d RFL=00000292 [--S-A--] 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 00007fec0cf15900 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=00007fec0cef4020 CR3=000000000ce6c000 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=00000000000000000000000000000000 XMM01=652022746f6f72223d74636361207469 XMM02=3d6c616e696d72657420322e322e302e XMM03=3d656d616e74736f682022646873732f XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=652075253d64692073253d706f000000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000