syzkaller login: [ 29.456115] BUG: Bad rss-counter state mm:000000003aea7153 type:MM_FILEPAGES val:33 [ 29.457378] BUG: Bad rss-counter state mm:000000003aea7153 type:MM_ANONPAGES val:22 [ 29.669720] ================================================================== [ 29.670791] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 29.671990] Read of size 8 at addr ffff88800e600a50 by task sshd/221 [ 29.672883] [ 29.673127] CPU: 0 PID: 221 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 29.674125] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 29.675261] Call Trace: [ 29.675633] [ 29.675952] dump_stack_lvl+0x91/0xf0 [ 29.676511] print_report+0xcc/0x620 [ 29.677067] ? __virt_addr_valid+0x102/0x340 [ 29.677692] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.678401] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.679104] kasan_report+0xbe/0xf0 [ 29.679654] ? vma_interval_tree_remove+0xc75/0xec0 [ 29.680380] vma_interval_tree_remove+0xc75/0xec0 [ 29.681085] vma_prepare+0xc54/0x11a0 [ 29.681638] __split_vma+0x5af/0x950 [ 29.682179] ? __pfx___split_vma+0x10/0x10 [ 29.682788] ? find_held_lock+0x2c/0x110 [ 29.683408] do_vmi_align_munmap+0x2ba/0x11f0 [ 29.684068] ? lock_is_held_type+0x9f/0x120 [ 29.684700] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 29.685394] ? mtree_range_walk+0x632/0x900 [ 29.686020] ? mas_walk+0x5c7/0x7c0 [ 29.686565] do_vmi_munmap+0x1f1/0x2b0 [ 29.687144] mmap_region+0x1f9/0x2660 [ 29.687694] ? vm_mmap_pgoff+0x15c/0x3a0 [ 29.688291] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 29.689113] ? __pfx_lock_acquire+0x10/0x10 [ 29.689726] ? __pfx_mmap_region+0x10/0x10 [ 29.690315] ? security_mmap_addr+0x7d/0xa0 [ 29.690909] ? get_unmapped_area+0x1f5/0x3f0 [ 29.691538] do_mmap+0x854/0xf00 [ 29.692023] vm_mmap_pgoff+0x1a6/0x3a0 [ 29.692592] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 29.693244] ksys_mmap_pgoff+0x3af/0x500 [ 29.693813] do_syscall_64+0x3f/0x90 [ 29.694344] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.695101] RIP: 0033:0x7f0d6b541d82 [ 29.695619] 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 [ 29.698062] RSP: 002b:00007ffd75860b48 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 29.699098] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f0d6b541d82 [ 29.700074] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f0d6a97b000 [ 29.701066] RBP: 00007f0d6a97b000 R08: 0000000000000009 R09: 0000000000001000 [ 29.702015] R10: 0000000000000812 R11: 0000000000000206 R12: 0000560027e5dec0 [ 29.702995] R13: 00007ffd75860b60 R14: 00007ffd75860b90 R15: 00007ffd75860ef0 [ 29.703978] [ 29.704305] [ 29.704549] Allocated by task 212: [ 29.705036] kasan_save_stack+0x22/0x50 [ 29.705619] kasan_set_track+0x25/0x30 [ 29.706181] __kasan_slab_alloc+0x59/0x70 [ 29.706773] kmem_cache_alloc+0x16b/0x370 [ 29.707380] vm_area_dup+0x20/0x160 [ 29.707899] __split_vma+0x170/0x950 [ 29.708427] split_vma+0xc6/0x110 [ 29.708927] mprotect_fixup+0x8d2/0xb30 [ 29.709511] do_mprotect_pkey+0x87e/0xd40 [ 29.710109] __x64_sys_mprotect+0x78/0xc0 [ 29.710703] do_syscall_64+0x3f/0x90 [ 29.711251] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.711973] [ 29.712213] Freed by task 212: [ 29.712654] kasan_save_stack+0x22/0x50 [ 29.713221] kasan_set_track+0x25/0x30 [ 29.713780] kasan_save_free_info+0x2b/0x50 [ 29.714406] __kasan_slab_free+0x10a/0x190 [ 29.715022] kmem_cache_free+0x10d/0x4d0 [ 29.715596] rcu_core+0x8c8/0x2860 [ 29.716101] __do_softirq+0x1b7/0x7d4 [ 29.716651] [ 29.716903] Last potentially related work creation: [ 29.717589] kasan_save_stack+0x22/0x50 [ 29.718166] __kasan_record_aux_stack+0x8e/0xa0 [ 29.718823] __call_rcu_common.constprop.0+0x6a/0xb90 [ 29.719570] remove_vma+0x139/0x170 [ 29.720088] do_vmi_align_munmap+0xd4a/0x11f0 [ 29.720730] do_vmi_munmap+0x1f1/0x2b0 [ 29.721294] __vm_munmap+0x138/0x3a0 [ 29.721840] __x64_sys_munmap+0x59/0x80 [ 29.722412] do_syscall_64+0x3f/0x90 [ 29.722976] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 29.723720] [ 29.723971] The buggy address belongs to the object at ffff88800e6009f8 [ 29.723971] which belongs to the cache vm_area_struct of size 168 [ 29.725666] The buggy address is located 88 bytes inside of [ 29.725666] freed 168-byte region [ffff88800e6009f8, ffff88800e600aa0) [ 29.727300] [ 29.727542] The buggy address belongs to the physical page: [ 29.728316] page:0000000012e91620 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe600 [ 29.729539] memcg:ffff88800c5e1e01 [ 29.730019] flags: 0x100000000000200(slab|node=0|zone=1) [ 29.730752] page_type: 0xffffffff() [ 29.731280] raw: 0100000000000200 ffff88800879fc80 ffffea00003ab500 dead000000000006 [ 29.732355] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800c5e1e01 [ 29.733410] page dumped because: kasan: bad access detected [ 29.734197] [ 29.734448] Memory state around the buggy address: [ 29.735145] ffff88800e600900: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.736144] ffff88800e600980: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa [ 29.737152] >ffff88800e600a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 29.738175] ^ [ 29.739008] ffff88800e600a80: fb fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 [ 29.740008] ffff88800e600b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 29.740996] ================================================================== [ 29.742227] Disabling lock debugging due to kernel taint [ 32.603503] BUG: Bad rss-counter state mm:00000000fdd04806 type:MM_FILEPAGES val:33 [ 32.604746] BUG: Bad rss-counter state mm:00000000fdd04806 type:MM_ANONPAGES val:22 [ 33.097653] BUG: Bad rss-counter state mm:00000000d9fdb40a type:MM_FILEPAGES val:33 [ 33.098863] BUG: Bad rss-counter state mm:00000000d9fdb40a type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:32913' (ECDSA) to the list of known hosts. 2023/06/20 00:00:18 fuzzer started 2023/06/20 00:00:18 dialing manager at localhost:44161 2023/06/20 00:00:18 checking machine... 2023/06/20 00:00:18 checking revisions... [ 33.813291] kmemleak: Automatic memory scanning thread ended 2023/06/20 00:00:19 testing simple program... [ 33.862719] cgroup: Unknown subsys name 'net' [ 33.923522] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 00:00:17 Registers: info registers vcpu 0 RAX=ffff8880147f0001 RBX=ffff8880147efad0 RCX=0000000000000001 RDX=ffff8880147efad8 RSI=ffff8880147efac0 RDI=ffff88806ce09aa8 RBP=ffff8880147e8000 RSP=ffff88806ce09a28 R8 =0000000000000001 R9 =ffff88806ce09ad8 R10=0000000000038001 R11=00000000000246df R12=ffff88806ce09af8 R13=ffff88806ce09ae0 R14=ffff8880147efac0 R15=ffff88806ce09a98 RIP=ffffffff81131cda 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 00007f363e036900 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=00007f363d475a90 CR3=000000000d89c000 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=454d49544c4145525f454352554f535f XMM01=3d504d415453454d49545f454d49544c XMM02=ffffffffffffffffffffffffffffffff XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=10ed90e832f5cda500000000000ae988 XMM05=595668ceedc440cd0000000000134d30 XMM06=19e9129bd510f2350000000000133be8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000001 RBX=ffff88806cf35000 RCX=ffffffff8153425b RDX=0000000000000000 RSI=0000000000000008 RDI=ffffffff85d3bed0 RBP=ffffffff8452fffc RSP=ffff88801ab7f8d8 R8 =0000000000000000 R9 =fffffbfff0ba77da R10=ffffffff85d3bed7 R11=0000000000000000 R12=ffff888016cc01b8 R13=ffff88801ab7fa48 R14=ffff888018ce5140 R15=0000000000000293 RIP=ffffffff8135b930 RFL=00000082 [--S----] 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 00007fac0588d900 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=00007ffc2923d000 CR3=000000000c686000 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