syzkaller login: [ 31.190704] BUG: Bad rss-counter state mm:000000007e0af7be type:MM_FILEPAGES val:33 [ 31.192326] BUG: Bad rss-counter state mm:000000007e0af7be type:MM_ANONPAGES val:22 [ 31.356731] ================================================================== [ 31.357680] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 31.358650] Read of size 8 at addr ffff88800d9d1c20 by task sshd/219 [ 31.359441] [ 31.359672] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 31.360762] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 31.361772] Call Trace: [ 31.362111] [ 31.362414] dump_stack_lvl+0x91/0xf0 [ 31.362955] print_report+0xcc/0x620 [ 31.363456] ? __virt_addr_valid+0x102/0x340 [ 31.364044] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.364684] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.365323] kasan_report+0xbe/0xf0 [ 31.365819] ? vma_interval_tree_remove+0xc75/0xec0 [ 31.366451] vma_interval_tree_remove+0xc75/0xec0 [ 31.367094] vma_prepare+0xc54/0x11a0 [ 31.367605] __split_vma+0x5af/0x950 [ 31.368125] ? __pfx___split_vma+0x10/0x10 [ 31.368688] ? lockdep_hardirqs_on_prepare+0x27b/0x3f0 [ 31.369364] do_vmi_align_munmap+0x2ba/0x11f0 [ 31.369958] ? lock_is_held_type+0x9f/0x120 [ 31.370529] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 31.371177] ? mtree_range_walk+0x632/0x900 [ 31.371780] ? mas_walk+0x5c7/0x7c0 [ 31.372296] do_vmi_munmap+0x1f1/0x2b0 [ 31.372806] mmap_region+0x1f9/0x2660 [ 31.373312] ? vm_mmap_pgoff+0x15c/0x3a0 [ 31.373845] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 31.374605] ? __pfx_lock_acquire+0x10/0x10 [ 31.375159] ? __pfx_mmap_region+0x10/0x10 [ 31.375718] ? security_mmap_addr+0x7d/0xa0 [ 31.376283] ? get_unmapped_area+0x1f5/0x3f0 [ 31.376859] do_mmap+0x854/0xf00 [ 31.377313] vm_mmap_pgoff+0x1a6/0x3a0 [ 31.377830] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 31.378427] ksys_mmap_pgoff+0x3af/0x500 [ 31.378960] do_syscall_64+0x3f/0x90 [ 31.379461] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.380151] RIP: 0033:0x7fa262c7dd82 [ 31.380631] 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 [ 31.382855] RSP: 002b:00007ffd9069f568 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 31.383821] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007fa262c7dd82 [ 31.384713] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007fa2620b7000 [ 31.385605] RBP: 00007fa2620b7000 R08: 0000000000000009 R09: 0000000000001000 [ 31.386496] R10: 0000000000000812 R11: 0000000000000206 R12: 000055c8ef9e2d90 [ 31.387374] R13: 00007ffd9069f580 R14: 00007ffd9069f5b0 R15: 00007ffd9069f910 [ 31.388307] [ 31.388629] [ 31.388853] Allocated by task 212: [ 31.389300] kasan_save_stack+0x22/0x50 [ 31.389838] kasan_set_track+0x25/0x30 [ 31.390356] __kasan_slab_alloc+0x59/0x70 [ 31.390898] kmem_cache_alloc+0x16b/0x370 [ 31.391448] vm_area_dup+0x20/0x160 [ 31.391949] __split_vma+0x170/0x950 [ 31.392443] split_vma+0xc6/0x110 [ 31.392914] mprotect_fixup+0x8d2/0xb30 [ 31.393441] do_mprotect_pkey+0x87e/0xd40 [ 31.393982] __x64_sys_mprotect+0x78/0xc0 [ 31.394526] do_syscall_64+0x3f/0x90 [ 31.395022] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.395701] [ 31.395941] Freed by task 212: [ 31.396351] kasan_save_stack+0x22/0x50 [ 31.396886] kasan_set_track+0x25/0x30 [ 31.397416] kasan_save_free_info+0x2b/0x50 [ 31.397971] __kasan_slab_free+0x10a/0x190 [ 31.398523] kmem_cache_free+0x10d/0x4d0 [ 31.399051] rcu_core+0x8c8/0x2860 [ 31.399524] __do_softirq+0x1b7/0x7d4 [ 31.400038] [ 31.400264] Last potentially related work creation: [ 31.400881] kasan_save_stack+0x22/0x50 [ 31.401469] __kasan_record_aux_stack+0x8e/0xa0 [ 31.402078] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.402757] remove_vma+0x139/0x170 [ 31.403232] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.403847] do_vmi_munmap+0x1f1/0x2b0 [ 31.404357] __vm_munmap+0x138/0x3a0 [ 31.404855] __x64_sys_munmap+0x59/0x80 [ 31.405371] do_syscall_64+0x3f/0x90 [ 31.405868] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.406530] [ 31.406759] Second to last potentially related work creation: [ 31.407469] kasan_save_stack+0x22/0x50 [ 31.408026] __kasan_record_aux_stack+0x8e/0xa0 [ 31.408632] __call_rcu_common.constprop.0+0x6a/0xb90 [ 31.409314] remove_vma+0x139/0x170 [ 31.409792] do_vmi_align_munmap+0xd4a/0x11f0 [ 31.410372] do_vmi_munmap+0x1f1/0x2b0 [ 31.410884] __vm_munmap+0x138/0x3a0 [ 31.411372] elf_map+0x26f/0x310 [ 31.411860] load_elf_binary+0xd82/0x5030 [ 31.412405] bprm_execve+0x803/0x1940 [ 31.412901] do_execveat_common+0x734/0x8e0 [ 31.413447] __x64_sys_execve+0x93/0xc0 [ 31.413955] do_syscall_64+0x3f/0x90 [ 31.414456] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 31.415139] [ 31.415366] The buggy address belongs to the object at ffff88800d9d1bc8 [ 31.415366] which belongs to the cache vm_area_struct of size 168 [ 31.416927] The buggy address is located 88 bytes inside of [ 31.416927] freed 168-byte region [ffff88800d9d1bc8, ffff88800d9d1c70) [ 31.418404] [ 31.418637] The buggy address belongs to the physical page: [ 31.419321] page:00000000264cb973 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd9d1 [ 31.420463] memcg:ffff88800df5b101 [ 31.420908] flags: 0x100000000000200(slab|node=0|zone=1) [ 31.421590] page_type: 0xffffffff() [ 31.422065] raw: 0100000000000200 ffff8880087a0c80 dead000000000100 dead000000000122 [ 31.423049] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800df5b101 [ 31.424018] page dumped because: kasan: bad access detected [ 31.424705] [ 31.424938] Memory state around the buggy address: [ 31.425545] ffff88800d9d1b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 31.426444] ffff88800d9d1b80: 00 fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb [ 31.427342] >ffff88800d9d1c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 31.428244] ^ [ 31.428801] ffff88800d9d1c80: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 [ 31.429698] ffff88800d9d1d00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 31.430600] ================================================================== [ 31.431591] Disabling lock debugging due to kernel taint [ 34.276682] BUG: Bad rss-counter state mm:00000000f531f962 type:MM_FILEPAGES val:33 [ 34.277685] BUG: Bad rss-counter state mm:00000000f531f962 type:MM_ANONPAGES val:22 [ 34.722527] BUG: Bad rss-counter state mm:00000000d0a0c4f1 type:MM_FILEPAGES val:33 [ 34.724155] BUG: Bad rss-counter state mm:00000000d0a0c4f1 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:4509' (ECDSA) to the list of known hosts. 2023/06/20 18:48:11 fuzzer started 2023/06/20 18:48:12 dialing manager at localhost:36067 2023/06/20 18:48:12 checking machine... 2023/06/20 18:48:12 checking revisions... [ 35.415901] kmemleak: Automatic memory scanning thread ended 2023/06/20 18:48:12 testing simple program... [ 35.465052] cgroup: Unknown subsys name 'net' [ 35.517995] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 18:48:11 Registers: info registers vcpu 0 RAX=1ffffffff0bbfc09 RBX=ffffffff85dfe048 RCX=ffffffff8180c704 RDX=000000000000000b RSI=ffffffff86138eb0 RDI=ffffffff85dfe034 RBP=ffffffff85dfe034 RSP=ffff88806ce099c0 R8 =ffffffff86138eb0 R9 =ffff88806ce09ab8 R10=0000000000038001 R11=0000000000020d9c R12=ffffffff85dfe060 R13=ffffffff85dfe034 R14=ffffffff85dfe034 R15=dffffc0000000000 RIP=ffffffff8112fc7a 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 00007f0eb43f9700 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=00007fbdc61e5fe0 CR3=0000000016a1e000 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=6d6f72662064657463656e6e6f637369 XMM02=2e303120746f6f722072657375206d6f XMM03=3a5d3832325b646873732031313a3834 XMM04=6456774875434142334f726f59427469 XMM05=485320415352203a3268737320383436 XMM06=206d6f726620746f6f7220726f662079 XMM07=00000000000000000000000000000000 XMM08=3a677562656420676f6c737973720000 XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=dffffc0000000000 RBX=ffff888009c5c1b0 RCX=ffffffff812bc70c RDX=1ffff1100138b837 RSI=0000000000000008 RDI=ffff888009c5c1b8 RBP=0000000000000001 RSP=ffff8880166efd40 R8 =0000000000000000 R9 =ffffed100138b837 R10=ffff888009c5c1bf R11=0000000000000000 R12=1ffff11002cddfaa R13=ffff888009c5c1b8 R14=ffff888019ea8000 R15=ffff88800db64030 RIP=ffffffff8180fed8 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 =0000 0000000000000000 00000000 00000000 DS =0000 0000000000000000 00000000 00000000 FS =0000 00007f6316ed5900 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=0000562189958c8c CR3=000000000d5e6000 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=6720646572637465733a4d41503d706f 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