syzkaller login: [ 24.481659] BUG: Bad rss-counter state mm:0000000094a1cb18 type:MM_FILEPAGES val:33 [ 24.482804] BUG: Bad rss-counter state mm:0000000094a1cb18 type:MM_ANONPAGES val:22 [ 24.648894] ================================================================== [ 24.649868] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.650866] Read of size 8 at addr ffff88800e7d6a50 by task sshd/220 [ 24.651638] [ 24.651857] CPU: 0 PID: 220 Comm: sshd Not tainted 6.4.0-rc7-next-20230619 #1 [ 24.652727] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.653705] Call Trace: [ 24.654026] [ 24.654312] dump_stack_lvl+0x91/0xf0 [ 24.654807] print_report+0xcc/0x620 [ 24.655291] ? __virt_addr_valid+0x102/0x340 [ 24.655844] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.656484] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.657096] kasan_report+0xbe/0xf0 [ 24.657578] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.658217] vma_interval_tree_remove+0xc75/0xec0 [ 24.658823] vma_prepare+0xc54/0x11a0 [ 24.659309] __split_vma+0x5af/0x950 [ 24.659785] ? __pfx___split_vma+0x10/0x10 [ 24.660346] ? find_held_lock+0x2c/0x110 [ 24.660871] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.661442] ? lock_is_held_type+0x9f/0x120 [ 24.661980] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.662593] ? mtree_range_walk+0x632/0x900 [ 24.663144] ? mas_walk+0x5c7/0x7c0 [ 24.663626] do_vmi_munmap+0x1f1/0x2b0 [ 24.664133] mmap_region+0x1f9/0x2660 [ 24.664622] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.665134] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.665850] ? __pfx_lock_acquire+0x10/0x10 [ 24.666388] ? __pfx_mmap_region+0x10/0x10 [ 24.666934] ? security_mmap_addr+0x7d/0xa0 [ 24.667464] ? get_unmapped_area+0x1f5/0x3f0 [ 24.668022] do_mmap+0x854/0xf00 [ 24.668489] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.668990] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.669557] ksys_mmap_pgoff+0x3af/0x500 [ 24.670072] do_syscall_64+0x3f/0x90 [ 24.670557] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.671211] RIP: 0033:0x7f047b746d82 [ 24.671678] 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 [ 24.673830] RSP: 002b:00007ffda0558d08 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.674729] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f047b746d82 [ 24.675581] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f047ab80000 [ 24.676440] RBP: 00007f047ab80000 R08: 0000000000000009 R09: 0000000000001000 [ 24.677300] R10: 0000000000000812 R11: 0000000000000206 R12: 000056066c7d9ec0 [ 24.678142] R13: 00007ffda0558d20 R14: 00007ffda0558d50 R15: 00007ffda05590b0 [ 24.679012] [ 24.679305] [ 24.679520] Allocated by task 213: [ 24.679951] kasan_save_stack+0x22/0x50 [ 24.680470] kasan_set_track+0x25/0x30 [ 24.680972] __kasan_slab_alloc+0x59/0x70 [ 24.681514] kmem_cache_alloc+0x16b/0x370 [ 24.682039] vm_area_dup+0x20/0x160 [ 24.682488] __split_vma+0x170/0x950 [ 24.682971] split_vma+0xc6/0x110 [ 24.683424] mprotect_fixup+0x8d2/0xb30 [ 24.683931] do_mprotect_pkey+0x87e/0xd40 [ 24.684466] __x64_sys_mprotect+0x78/0xc0 [ 24.684989] do_syscall_64+0x3f/0x90 [ 24.685468] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.686110] [ 24.686325] Freed by task 204: [ 24.686725] kasan_save_stack+0x22/0x50 [ 24.687238] kasan_set_track+0x25/0x30 [ 24.687741] kasan_save_free_info+0x2b/0x50 [ 24.688305] __kasan_slab_free+0x10a/0x190 [ 24.688841] kmem_cache_free+0x10d/0x4d0 [ 24.689351] rcu_core+0x8c8/0x2860 [ 24.689795] __do_softirq+0x1b7/0x7d4 [ 24.690274] [ 24.690493] Last potentially related work creation: [ 24.691072] kasan_save_stack+0x22/0x50 [ 24.691583] __kasan_record_aux_stack+0x8e/0xa0 [ 24.692166] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.692814] remove_vma+0x139/0x170 [ 24.693274] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.693850] do_vmi_munmap+0x1f1/0x2b0 [ 24.694345] __vm_munmap+0x138/0x3a0 [ 24.694817] __x64_sys_munmap+0x59/0x80 [ 24.695320] do_syscall_64+0x3f/0x90 [ 24.695801] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.696465] [ 24.696680] Second to last potentially related work creation: [ 24.697365] kasan_save_stack+0x22/0x50 [ 24.697900] __kasan_record_aux_stack+0x8e/0xa0 [ 24.698484] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.699129] remove_vma+0x139/0x170 [ 24.699579] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.700152] do_vmi_munmap+0x1f1/0x2b0 [ 24.700648] mmap_region+0x1f9/0x2660 [ 24.701124] do_mmap+0x854/0xf00 [ 24.701562] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.702052] ksys_mmap_pgoff+0x3af/0x500 [ 24.702555] do_syscall_64+0x3f/0x90 [ 24.703031] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.703679] [ 24.703897] The buggy address belongs to the object at ffff88800e7d69f8 [ 24.703897] which belongs to the cache vm_area_struct of size 168 [ 24.705373] The buggy address is located 88 bytes inside of [ 24.705373] freed 168-byte region [ffff88800e7d69f8, ffff88800e7d6aa0) [ 24.706773] [ 24.706990] The buggy address belongs to the physical page: [ 24.707657] page:0000000054d4aba2 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe7d6 [ 24.708749] memcg:ffff88800e057501 [ 24.709177] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.709872] page_type: 0xffffffff() [ 24.710325] raw: 0100000000000200 ffff88800879fc80 ffffea000039c940 dead000000000003 [ 24.711242] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800e057501 [ 24.712147] page dumped because: kasan: bad access detected [ 24.712810] [ 24.713026] Memory state around the buggy address: [ 24.713608] ffff88800e7d6900: fc fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.714466] ffff88800e7d6980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa [ 24.715343] >ffff88800e7d6a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.716210] ^ [ 24.716909] ffff88800e7d6a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb [ 24.717768] ffff88800e7d6b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.718612] ================================================================== [ 24.719934] Disabling lock debugging due to kernel taint [ 26.671405] BUG: Bad rss-counter state mm:000000006ebfbc0a type:MM_FILEPAGES val:33 [ 26.672461] BUG: Bad rss-counter state mm:000000006ebfbc0a type:MM_ANONPAGES val:22 [ 27.147624] BUG: Bad rss-counter state mm:00000000ebcf228c type:MM_FILEPAGES val:33 [ 27.149385] BUG: Bad rss-counter state mm:00000000ebcf228c type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:57154' (ECDSA) to the list of known hosts. 2023/06/19 19:39:51 fuzzer started 2023/06/19 19:39:52 dialing manager at localhost:44161 2023/06/19 19:39:52 checking machine... 2023/06/19 19:39:52 checking revisions... [ 27.906641] kmemleak: Automatic memory scanning thread ended 2023/06/19 19:39:52 testing simple program... [ 27.953749] cgroup: Unknown subsys name 'net' [ 28.039340] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 19:39:51 Registers: info registers vcpu 0 RAX=0000000000000005 RBX=0000000000000005 RCX=0000000000000000 RDX=0000000000000001 RSI=0000000000000000 RDI=1ffffffff0ba7a02 RBP=000000000003fda0 RSP=ffff88801656f3d0 R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff85d3bed7 R11=000000000000f083 R12=ffff88807ffdc500 R13=000000000003fda0 R14=000000000001a196 R15=ffff88807ffdc500 RIP=ffffffff816b0a37 RFL=00000006 [-----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 00007f5af7e5a700 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=00007ffc494cbe88 CR3=000000000fd50000 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=00007fe3b213b510000055693e67e790 XMM02=6f6974707972636e6561737268746977 XMM03=00000000000000000000000000777074 XMM04=40404040404040404040404040404040 XMM05=5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a5a XMM06=20202020202020202020202020202020 XMM07=ffffffffffff00ffffff00ffffff00ff XMM08=00002000000000202020002020200000 XMM09=ffffffffffff00ffffff00ffffff00ff XMM10=00002000000000202020002020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=0000000000000002 RBX=0000000000000001 RCX=ffffffff86136dac RDX=0000000000000000 RSI=0000000000000001 RDI=0000000000000001 RBP=ffff88801a097868 RSP=ffff88801a0977a0 R8 =ffffffff86136db0 R9 =ffff88801a097850 R10=0000000000038001 R11=0000000000020c50 R12=ffff88801a097870 R13=ffff88801a097858 R14=ffff88801a097ae8 R15=ffff88801a097810 RIP=ffffffff81130bc1 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 00007f457fc01900 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=00007fff6a32c000 CR3=000000000dd88000 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