syzkaller login: [ 29.766382] BUG: Bad rss-counter state mm:00000000e79f5836 type:MM_FILEPAGES val:33 [ 29.767363] BUG: Bad rss-counter state mm:00000000e79f5836 type:MM_ANONPAGES val:22 [ 29.941135] ================================================================== [ 29.942201] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.943318] Read of size 8 at addr ffff88801699b880 by task sshd/221 [ 29.944380] [ 29.944637] CPU: 1 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 29.945661] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.946861] Call Trace: [ 29.947249] [ 29.947585] dump_stack_lvl+0x91/0xf0 [ 29.948172] print_report+0xcc/0x620 [ 29.948762] ? __virt_addr_valid+0x102/0x340 [ 29.949427] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.950147] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.950889] kasan_report+0xbe/0xf0 [ 29.951449] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.952184] vma_interval_tree_remove+0xc75/0xec0 [ 29.952930] vma_prepare+0xc54/0x11a0 [ 29.953492] __split_vma+0x5af/0x950 [ 29.954062] ? __pfx___split_vma+0x10/0x10 [ 29.954698] ? find_held_lock+0x2c/0x110 [ 29.955321] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.955992] ? lock_is_held_type+0x9f/0x120 [ 29.956662] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.957387] ? mtree_range_walk+0x632/0x900 [ 29.958052] ? mas_walk+0x5c7/0x7c0 [ 29.958615] do_vmi_munmap+0x1f1/0x2b0 [ 29.959199] mmap_region+0x1f9/0x2660 [ 29.959783] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.960395] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.961247] ? __pfx_lock_acquire+0x10/0x10 [ 29.961884] ? __pfx_mmap_region+0x10/0x10 [ 29.962515] ? security_mmap_addr+0x7d/0xa0 [ 29.963161] ? get_unmapped_area+0x1f5/0x3f0 [ 29.963830] do_mmap+0x854/0xf00 [ 29.964365] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.964957] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.965638] ksys_mmap_pgoff+0x3af/0x500 [ 29.966247] do_syscall_64+0x3f/0x90 [ 29.966816] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.967586] RIP: 0033:0x7f11d98efd82 [ 29.968124] 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 [ 29.970696] RSP: 002b:00007ffde3598478 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.971782] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f11d98efd82 [ 29.972800] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f11d8d29000 [ 29.973799] RBP: 00007f11d8d29000 R08: 0000000000000009 R09: 0000000000001000 [ 29.974812] R10: 0000000000000812 R11: 0000000000000206 R12: 000055cfb773cec0 [ 29.975802] R13: 00007ffde3598490 R14: 00007ffde35984c0 R15: 00007ffde3598820 [ 29.976822] [ 29.977157] [ 29.977406] Allocated by task 214: [ 29.977908] kasan_save_stack+0x22/0x50 [ 29.978487] kasan_set_track+0x25/0x30 [ 29.979077] __kasan_slab_alloc+0x59/0x70 [ 29.979697] kmem_cache_alloc+0x16b/0x370 [ 29.980300] vm_area_dup+0x20/0x160 [ 29.980839] __split_vma+0x170/0x950 [ 29.981387] split_vma+0xc6/0x110 [ 29.981911] mprotect_fixup+0x8d2/0xb30 [ 29.982505] do_mprotect_pkey+0x87e/0xd40 [ 29.983128] __x64_sys_mprotect+0x78/0xc0 [ 29.983730] do_syscall_64+0x3f/0x90 [ 29.984294] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.985068] [ 29.985322] Freed by task 19: [ 29.985852] kasan_save_stack+0x22/0x50 [ 29.986445] kasan_set_track+0x25/0x30 [ 29.987024] kasan_save_free_info+0x2b/0x50 [ 29.987659] __kasan_slab_free+0x10a/0x190 [ 29.988302] kmem_cache_free+0x10d/0x4d0 [ 29.988928] rcu_core+0x8c8/0x2860 [ 29.989445] __do_softirq+0x1b7/0x7d4 [ 29.990005] [ 29.990261] Last potentially related work creation: [ 29.990950] kasan_save_stack+0x22/0x50 [ 29.991552] __kasan_record_aux_stack+0x8e/0xa0 [ 29.992234] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.992987] remove_vma+0x139/0x170 [ 29.993518] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.994163] do_vmi_munmap+0x1f1/0x2b0 [ 29.994728] __vm_munmap+0x138/0x3a0 [ 29.995285] __x64_sys_munmap+0x59/0x80 [ 29.995878] do_syscall_64+0x3f/0x90 [ 29.996431] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.997189] [ 29.997437] The buggy address belongs to the object at ffff88801699b828 [ 29.997437] which belongs to the cache vm_area_struct of size 168 [ 29.999155] The buggy address is located 88 bytes inside of [ 29.999155] freed 168-byte region [ffff88801699b828, ffff88801699b8d0) [ 30.000751] [ 30.000993] The buggy address belongs to the physical page: [ 30.001725] page:00000000d76ff507 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1699b [ 30.002953] memcg:ffff88800ff94501 [ 30.003434] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.004169] page_type: 0xffffffff() [ 30.004690] raw: 0100000000000200 ffff8880087a0c80 dead000000000122 0000000000000000 [ 30.005737] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800ff94501 [ 30.006757] page dumped because: kasan: bad access detected [ 30.007500] [ 30.007746] Memory state around the buggy address: [ 30.008411] ffff88801699b780: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 30.009381] ffff88801699b800: fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb fb [ 30.010351] >ffff88801699b880: fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc [ 30.011317] ^ [ 30.011784] ffff88801699b900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.012779] ffff88801699b980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 [ 30.013752] ================================================================== [ 30.014827] Disabling lock debugging due to kernel taint [ 31.959115] BUG: Bad rss-counter state mm:000000009f0cb5c9 type:MM_FILEPAGES val:33 [ 31.960181] BUG: Bad rss-counter state mm:000000009f0cb5c9 type:MM_ANONPAGES val:22 [ 32.428699] BUG: Bad rss-counter state mm:0000000070fda2fc type:MM_FILEPAGES val:33 [ 32.429796] BUG: Bad rss-counter state mm:0000000070fda2fc type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:62420' (ECDSA) to the list of known hosts. 2023/06/20 17:43:43 fuzzer started 2023/06/20 17:43:43 dialing manager at localhost:36067 2023/06/20 17:43:43 checking machine... 2023/06/20 17:43:43 checking revisions... [ 33.101097] kmemleak: Automatic memory scanning thread ended 2023/06/20 17:43:43 testing simple program... [ 33.153352] cgroup: Unknown subsys name 'net' [ 33.202225] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 17:43:43 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=0000000000000000 RCX=ffffffff812d86ea RDX=ffff88800ea8d1c0 RSI=0000000000000008 RDI=ffffffff85d3d350 RBP=1ffff11002b03f6f RSP=ffff88801581fb60 R8 =0000000000000005 R9 =0000000000000001 R10=0000000000000003 R11=0000000000000001 R12=ffff888015d0fe08 R13=ffffffff82146a29 R14=0000000000000008 R15=ffff88800fdb8880 RIP=ffffffff8180fea8 RFL=00000256 [---ZAP-] 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 00007f915bab2900 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=00007f915c067650 CR3=000000000da64000 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=000000000000000000000000000000ff XMM02=000000000000000000000000000000ff XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=ffbc64ffffbc44ffffbc34ffffbc9f00 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000001 RCX=1ffff11002b03f1c RDX=dffffc0000000000 RSI=ffffffff8186d48e RDI=ffff88801581f888 RBP=ffff88801581f8e0 RSP=ffff88801581f818 R8 =0000000000000001 R9 =ffff88801581f8c8 R10=0000000000038001 R11=00000000000229d9 R12=ffff88801581f8e8 R13=ffff88801581f8d0 R14=ffff88801581f8c9 R15=ffff88801581f888 RIP=ffffffff81130706 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 00007f915bab2900 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=00007f915c069618 CR3=000000000da64000 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=6e69676f6c5f6d61702c78756e696c65 XMM02=755f6d61702c74696d7265705f6d6170 XMM03=2c766e655f6d61702c7374696d696c5f XMM04=6d61702c766e655f6d61702c7374696d XMM05=78696e755f6d61702c74696d7265705f XMM06=6469756e69676f6c5f6d61702c78756e XMM07=672065736f6c635f6e6f69737365733a XMM08=61662029286e65706f5f746964756100 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000