syzkaller login: [ 30.804651] BUG: Bad rss-counter state mm:00000000b36b24b2 type:MM_FILEPAGES val:33 [ 30.805921] BUG: Bad rss-counter state mm:00000000b36b24b2 type:MM_ANONPAGES val:22 [ 30.866449] ================================================================== [ 30.867481] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 30.868531] Read of size 8 at addr ffff88800f70c5c8 by task sshd/219 [ 30.869370] [ 30.869612] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 30.870570] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 30.871641] Call Trace: [ 30.872009] [ 30.872339] dump_stack_lvl+0x91/0xf0 [ 30.872904] print_report+0xcc/0x620 [ 30.873475] ? __virt_addr_valid+0x102/0x340 [ 30.874143] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.874892] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.875647] kasan_report+0xbe/0xf0 [ 30.876260] ? vma_interval_tree_remove+0xc75/0xec0 [ 30.877020] vma_interval_tree_remove+0xc75/0xec0 [ 30.877995] vma_prepare+0xc54/0x11a0 [ 30.878579] __split_vma+0x5af/0x950 [ 30.879156] ? __pfx___split_vma+0x10/0x10 [ 30.879797] ? find_held_lock+0x2c/0x110 [ 30.880446] do_vmi_align_munmap+0x2ba/0x11f0 [ 30.881130] ? lock_is_held_type+0x9f/0x120 [ 30.881776] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 30.882512] ? mtree_range_walk+0x632/0x900 [ 30.883167] ? mas_walk+0x5c7/0x7c0 [ 30.883736] do_vmi_munmap+0x1f1/0x2b0 [ 30.884347] mmap_region+0x1f9/0x2660 [ 30.884940] ? vm_mmap_pgoff+0x15c/0x3a0 [ 30.885562] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 30.886426] ? __pfx_lock_acquire+0x10/0x10 [ 30.887081] ? __pfx_mmap_region+0x10/0x10 [ 30.887723] ? security_mmap_addr+0x7d/0xa0 [ 30.888389] ? get_unmapped_area+0x1f5/0x3f0 [ 30.889057] do_mmap+0x854/0xf00 [ 30.889595] vm_mmap_pgoff+0x1a6/0x3a0 [ 30.890195] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 30.890867] ksys_mmap_pgoff+0x3af/0x500 [ 30.891492] do_syscall_64+0x3f/0x90 [ 30.892088] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.892868] RIP: 0033:0x7fb41e84ed82 [ 30.893431] 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 [ 30.896064] RSP: 002b:00007ffe2d9ce6c8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 30.897168] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fb41e84ed82 [ 30.898203] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fb41dc88000 [ 30.899140] RBP: 00007fb41dc88000 R08: 0000000000000009 R09: 0000000000001000 [ 30.900079] R10: 0000000000000812 R11: 0000000000000206 R12: 000055abb8829ec0 [ 30.901021] R13: 00007ffe2d9ce6e0 R14: 00007ffe2d9ce710 R15: 00007ffe2d9cea70 [ 30.901959] [ 30.902278] [ 30.902511] Allocated by task 212: [ 30.902986] kasan_save_stack+0x22/0x50 [ 30.903525] kasan_set_track+0x25/0x30 [ 30.904067] __kasan_slab_alloc+0x59/0x70 [ 30.904626] kmem_cache_alloc+0x16b/0x370 [ 30.905196] vm_area_dup+0x20/0x160 [ 30.905692] __split_vma+0x170/0x950 [ 30.906199] split_vma+0xc6/0x110 [ 30.906680] mprotect_fixup+0x8d2/0xb30 [ 30.907226] do_mprotect_pkey+0x87e/0xd40 [ 30.907797] __x64_sys_mprotect+0x78/0xc0 [ 30.908401] do_syscall_64+0x3f/0x90 [ 30.908919] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.909617] [ 30.909853] Freed by task 13: [ 30.910276] kasan_save_stack+0x22/0x50 [ 30.910814] kasan_set_track+0x25/0x30 [ 30.911357] kasan_save_free_info+0x2b/0x50 [ 30.911940] __kasan_slab_free+0x10a/0x190 [ 30.912530] kmem_cache_free+0x10d/0x4d0 [ 30.913091] rcu_core+0x8c8/0x2860 [ 30.913576] __do_softirq+0x1b7/0x7d4 [ 30.914096] [ 30.914336] Last potentially related work creation: [ 30.914969] kasan_save_stack+0x22/0x50 [ 30.915517] __kasan_record_aux_stack+0x8e/0xa0 [ 30.916170] __call_rcu_common.constprop.0+0x6a/0xb90 [ 30.916878] remove_vma+0x139/0x170 [ 30.917371] do_vmi_align_munmap+0xd4a/0x11f0 [ 30.917980] do_vmi_munmap+0x1f1/0x2b0 [ 30.918520] __vm_munmap+0x138/0x3a0 [ 30.919035] __x64_sys_munmap+0x59/0x80 [ 30.919588] do_syscall_64+0x3f/0x90 [ 30.920126] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 30.920841] [ 30.921077] The buggy address belongs to the object at ffff88800f70c570 [ 30.921077] which belongs to the cache vm_area_struct of size 168 [ 30.922665] The buggy address is located 88 bytes inside of [ 30.922665] freed 168-byte region [ffff88800f70c570, ffff88800f70c618) [ 30.924220] [ 30.924457] The buggy address belongs to the physical page: [ 30.925192] page:00000000260310c2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xf70c [ 30.926379] memcg:ffff88800fbf2b01 [ 30.926859] flags: 0x100000000000200(slab|node=0|zone=1) [ 30.927561] page_type: 0xffffffff() [ 30.928080] raw: 0100000000000200 ffff88800879fc80 dead000000000122 0000000000000000 [ 30.929083] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800fbf2b01 [ 30.930083] page dumped because: kasan: bad access detected [ 30.930815] [ 30.931056] Memory state around the buggy address: [ 30.931692] ffff88800f70c480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.932638] ffff88800f70c500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 30.933581] >ffff88800f70c580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.934521] ^ [ 30.935244] ffff88800f70c600: fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb [ 30.936204] ffff88800f70c680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 30.937136] ================================================================== [ 30.938459] Disabling lock debugging due to kernel taint [ 32.963944] BUG: Bad rss-counter state mm:00000000ee239304 type:MM_FILEPAGES val:33 [ 32.964980] BUG: Bad rss-counter state mm:00000000ee239304 type:MM_ANONPAGES val:22 [ 33.525234] BUG: Bad rss-counter state mm:00000000de2166c5 type:MM_FILEPAGES val:33 [ 33.526510] BUG: Bad rss-counter state mm:00000000de2166c5 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:64793' (ECDSA) to the list of known hosts. 2023/06/19 22:55:04 fuzzer started 2023/06/19 22:55:05 dialing manager at localhost:44161 2023/06/19 22:55:05 checking machine... 2023/06/19 22:55:05 checking revisions... [ 34.153754] kmemleak: Automatic memory scanning thread ended 2023/06/19 22:55:05 testing simple program... [ 34.198358] cgroup: Unknown subsys name 'net' [ 34.234897] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 22:55:04 Registers: info registers vcpu 0 RAX=1ffffffff0bb22c6 RBX=ffffffff85d91630 RCX=ffffffff81132ffd RDX=0000000000000000 RSI=ffffffff86096756 RDI=ffffffff85d91630 RBP=ffffffff85d91630 RSP=ffff8880147775c8 R8 =ffffffff86096756 R9 =0000000000000000 R10=0000000000038001 R11=0000000000006097 R12=ffffffff85d91630 R13=ffffffff85d91630 R14=ffffffff85d91630 R15=dffffc0000000000 RIP=ffffffff8112fc7f RFL=00000216 [----AP-] 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 00007f1186bfd900 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=00007f118600ad90 CR3=000000000ec38000 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=ffffffffffffffffffffffffffffffff XMM01=30306234386136303638616663356134 XMM02=38303062343861363036386166633561 XMM03=2f6c616e72756f6a2f676f6c2f6e7572 XMM04=a23378f6f221356800000000000ae988 XMM05=c4fac521dcb814790000000000135f38 XMM06=fb2c5e348be60c430000000000134cd8 XMM07=00000000000000000000000000000000 XMM08=415453454d49545f454d49544c414552 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000000 RBX=0000000000000006 RCX=0000000000000000 RDX=ffff88800eeb3680 RSI=ffffffff81f4dd80 RDI=0000000000000005 RBP=ffff888019c47c38 RSP=ffff888019c47a50 R8 =0000000000000005 R9 =0000000000000000 R10=0000000000000001 R11=0000000000000000 R12=ffff88800f4d6808 R13=ffff888019c47c3c R14=0000000000000001 R15=dffffc0000000000 RIP=ffffffff814c081b 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 00007f10c7506900 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=00007fff372a1000 CR3=000000000edb4000 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=ffffffffffffffffffff000000000000 XMM01=000000000000003635006b6f6c6c756e XMM02=62003d73646e756f7200323135616873 XMM03=5320444f4854454d5f54505952434e45 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=00000000000000000000000000000000 XMM08=00000000000000000000000000202020 XMM09=ff0000ffffffffffff00000000ffffff XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000