syzkaller login: [ 29.539972] BUG: Bad rss-counter state mm:0000000019d3f583 type:MM_FILEPAGES val:33 [ 29.540925] BUG: Bad rss-counter state mm:0000000019d3f583 type:MM_ANONPAGES val:22 [ 29.716875] ================================================================== [ 29.717860] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.718938] Read of size 8 at addr ffff88800e8a7ed8 by task sshd/222 [ 29.719780] [ 29.720016] CPU: 0 PID: 222 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.720949] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.722009] Call Trace: [ 29.722338] [ 29.722648] dump_stack_lvl+0x91/0xf0 [ 29.723174] print_report+0xcc/0x620 [ 29.723727] ? __virt_addr_valid+0x102/0x340 [ 29.724324] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.724992] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.725688] kasan_report+0xbe/0xf0 [ 29.726176] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.726883] vma_interval_tree_remove+0xc75/0xec0 [ 29.727565] vma_prepare+0xc54/0x11a0 [ 29.728099] __split_vma+0x5af/0x950 [ 29.728632] ? __pfx___split_vma+0x10/0x10 [ 29.729223] ? find_held_lock+0x2c/0x110 [ 29.729802] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.730410] ? lock_is_held_type+0x9f/0x120 [ 29.731014] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.731698] ? mtree_range_walk+0x632/0x900 [ 29.732319] ? mas_walk+0x5c7/0x7c0 [ 29.732847] do_vmi_munmap+0x1f1/0x2b0 [ 29.733398] mmap_region+0x1f9/0x2660 [ 29.733935] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.734527] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.735251] ? __pfx_lock_acquire+0x10/0x10 [ 29.735881] ? __pfx_mmap_region+0x10/0x10 [ 29.736480] ? security_mmap_addr+0x7d/0xa0 [ 29.737084] ? get_unmapped_area+0x1f5/0x3f0 [ 29.737717] do_mmap+0x854/0xf00 [ 29.738211] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.738779] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.739424] ksys_mmap_pgoff+0x3af/0x500 [ 29.739999] do_syscall_64+0x3f/0x90 [ 29.740535] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.741263] RIP: 0033:0x7fd9ae26ed82 [ 29.741782] 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 [ 29.744128] RSP: 002b:00007ffc3fae23a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.745128] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fd9ae26ed82 [ 29.746049] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fd9ad6a8000 [ 29.747006] RBP: 00007fd9ad6a8000 R08: 0000000000000009 R09: 0000000000001000 [ 29.747952] R10: 0000000000000812 R11: 0000000000000206 R12: 000055e2dc1c0980 [ 29.748871] R13: 00007ffc3fae23c0 R14: 00007ffc3fae23f0 R15: 00007ffc3fae2750 [ 29.749825] [ 29.750120] [ 29.750342] Allocated by task 213: [ 29.750824] kasan_save_stack+0x22/0x50 [ 29.751379] kasan_set_track+0x25/0x30 [ 29.751924] __kasan_slab_alloc+0x59/0x70 [ 29.752505] kmem_cache_alloc+0x16b/0x370 [ 29.753092] vm_area_dup+0x20/0x160 [ 29.753619] __split_vma+0x170/0x950 [ 29.754090] split_vma+0xc6/0x110 [ 29.754589] mprotect_fixup+0x8d2/0xb30 [ 29.755157] do_mprotect_pkey+0x87e/0xd40 [ 29.755769] __x64_sys_mprotect+0x78/0xc0 [ 29.756361] do_syscall_64+0x3f/0x90 [ 29.756899] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.757631] [ 29.757848] Freed by task 213: [ 29.758239] kasan_save_stack+0x22/0x50 [ 29.758830] kasan_set_track+0x25/0x30 [ 29.759392] kasan_save_free_info+0x2b/0x50 [ 29.759985] __kasan_slab_free+0x10a/0x190 [ 29.760586] kmem_cache_free+0x10d/0x4d0 [ 29.761163] rcu_core+0x8c8/0x2860 [ 29.761654] __do_softirq+0x1b7/0x7d4 [ 29.762146] [ 29.762381] Last potentially related work creation: [ 29.763068] kasan_save_stack+0x22/0x50 [ 29.763647] __kasan_record_aux_stack+0x8e/0xa0 [ 29.764302] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.765034] remove_vma+0x139/0x170 [ 29.765548] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.766188] do_vmi_munmap+0x1f1/0x2b0 [ 29.766729] __vm_munmap+0x138/0x3a0 [ 29.767221] __x64_sys_munmap+0x59/0x80 [ 29.767823] do_syscall_64+0x3f/0x90 [ 29.768370] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.769096] [ 29.769345] The buggy address belongs to the object at ffff88800e8a7e80 [ 29.769345] which belongs to the cache vm_area_struct of size 168 [ 29.770971] The buggy address is located 88 bytes inside of [ 29.770971] freed 168-byte region [ffff88800e8a7e80, ffff88800e8a7f28) [ 29.772565] [ 29.772808] The buggy address belongs to the physical page: [ 29.773582] page:00000000ce80fcd9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe8a7 [ 29.774741] memcg:ffff88800c619901 [ 29.775221] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.775971] page_type: 0xffffffff() [ 29.776483] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 29.777549] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c619901 [ 29.778498] page dumped because: kasan: bad access detected [ 29.779264] [ 29.779516] Memory state around the buggy address: [ 29.780186] ffff88800e8a7d80: fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.781153] ffff88800e8a7e00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 29.782076] >ffff88800e8a7e80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.783032] ^ [ 29.783884] ffff88800e8a7f00: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc [ 29.784922] ffff88800e8a7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 29.785897] ================================================================== [ 29.787007] Disabling lock debugging due to kernel taint [ 32.577809] BUG: Bad rss-counter state mm:000000000e4c4a2c type:MM_FILEPAGES val:33 [ 32.578565] BUG: Bad rss-counter state mm:000000000e4c4a2c type:MM_ANONPAGES val:22 [ 32.984009] BUG: Bad rss-counter state mm:0000000010912e53 type:MM_FILEPAGES val:33 [ 32.984905] BUG: Bad rss-counter state mm:0000000010912e53 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:1493' (ECDSA) to the list of known hosts. 2023/06/20 01:23:39 fuzzer started 2023/06/20 01:23:39 dialing manager at localhost:44161 2023/06/20 01:23:39 checking machine... 2023/06/20 01:23:39 checking revisions... [ 33.664950] kmemleak: Automatic memory scanning thread ended 2023/06/20 01:23:39 testing simple program... [ 33.719019] cgroup: Unknown subsys name 'net' [ 33.771990] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 01:23:38 Registers: info registers vcpu 0 RAX=ffffffff813782a8 RBX=0000000000000007 RCX=0000000000000001 RDX=0000000000000000 RSI=0000000000000016 RDI=ffff88806ce09be0 RBP=dffffc0000000000 RSP=ffff88806ce09b20 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=00000000000b6c88 R12=0000000000000016 R13=0000000000000000 R14=ffff88806ce09bb0 R15=ffff88800ef9e780 RIP=ffffffff813ad606 RFL=00000202 [-------] 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007fb71e28e900 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=00007fb71d69f6a0 CR3=000000000cbca000 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=656e6e6f637369443d4547415353454d XMM01=2e303120746f6f722072657375206d6f XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=888045e997a3134200000000000ae988 XMM05=e83a43634a93fc700000000000134990 XMM06=867d321993db55360000000000133a38 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000078 RBX=0000000000000000 RCX=0000000001dd0441 RDX=0000000001dd0401 RSI=0000000000092cc0 RDI=0000000001dd0401 RBP=ffff88800f147bd8 RSP=ffff88800f147b90 R8 =ffff888014594260 R9 =000000000003de00 R10=ffffffff85d3bed7 R11=00000000000b6996 R12=ffff88800844f780 R13=0000000000000000 R14=0000000000000000 R15=ffffffff818470dc RIP=ffffffff81807e4f RFL=00000286 [--S--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 00007f7f69354900 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=00007f7f69909650 CR3=000000000eff6000 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=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