syzkaller login: [ 24.221021] BUG: Bad rss-counter state mm:0000000098ef4991 type:MM_FILEPAGES val:33 [ 24.222220] BUG: Bad rss-counter state mm:0000000098ef4991 type:MM_ANONPAGES val:22 [ 24.268243] ================================================================== [ 24.269338] BUG: KASAN: slab-use-after-free in vma_interval_tree_remove+0xc75/0xec0 [ 24.270323] Read of size 8 at addr ffff88800d6785c8 by task sshd/219 [ 24.271252] [ 24.271476] CPU: 1 PID: 219 Comm: sshd Not tainted 6.4.0-rc7-next-20230620 #1 [ 24.272388] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 24.273376] Call Trace: [ 24.273706] [ 24.273989] dump_stack_lvl+0x91/0xf0 [ 24.274477] print_report+0xcc/0x620 [ 24.274963] ? __virt_addr_valid+0x102/0x340 [ 24.275512] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.276189] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.276806] kasan_report+0xbe/0xf0 [ 24.277300] ? vma_interval_tree_remove+0xc75/0xec0 [ 24.277945] vma_interval_tree_remove+0xc75/0xec0 [ 24.278559] vma_prepare+0xc54/0x11a0 [ 24.279063] __split_vma+0x5af/0x950 [ 24.279548] ? __pfx___split_vma+0x10/0x10 [ 24.280135] ? find_held_lock+0x2c/0x110 [ 24.280662] do_vmi_align_munmap+0x2ba/0x11f0 [ 24.281250] ? lock_is_held_type+0x9f/0x120 [ 24.281788] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 24.282392] ? mtree_range_walk+0x632/0x900 [ 24.282947] ? mas_walk+0x5c7/0x7c0 [ 24.283429] do_vmi_munmap+0x1f1/0x2b0 [ 24.283934] mmap_region+0x1f9/0x2660 [ 24.284415] ? vm_mmap_pgoff+0x15c/0x3a0 [ 24.284959] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 24.285691] ? __pfx_lock_acquire+0x10/0x10 [ 24.286270] ? __pfx_mmap_region+0x10/0x10 [ 24.286826] ? security_mmap_addr+0x7d/0xa0 [ 24.287372] ? get_unmapped_area+0x1f5/0x3f0 [ 24.287981] do_mmap+0x854/0xf00 [ 24.288446] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.288958] ? __pfx_vm_mmap_pgoff+0x10/0x10 [ 24.289546] ksys_mmap_pgoff+0x3af/0x500 [ 24.290114] do_syscall_64+0x3f/0x90 [ 24.290617] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.291291] RIP: 0033:0x7f3779b36d82 [ 24.291767] 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 [ 24.294041] RSP: 002b:00007ffcc53fa438 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 [ 24.294996] RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f3779b36d82 [ 24.295893] RDX: 0000000000000005 RSI: 0000000000001000 RDI: 00007f3778f70000 [ 24.296784] RBP: 00007f3778f70000 R08: 0000000000000009 R09: 0000000000001000 [ 24.297671] R10: 0000000000000812 R11: 0000000000000206 R12: 000055ec980e2ec0 [ 24.298556] R13: 00007ffcc53fa450 R14: 00007ffcc53fa480 R15: 00007ffcc53fa7e0 [ 24.299458] [ 24.299765] [ 24.300015] Allocated by task 212: [ 24.300449] kasan_save_stack+0x22/0x50 [ 24.300962] kasan_set_track+0x25/0x30 [ 24.301456] __kasan_slab_alloc+0x59/0x70 [ 24.302016] kmem_cache_alloc+0x16b/0x370 [ 24.302546] vm_area_dup+0x20/0x160 [ 24.303013] __split_vma+0x170/0x950 [ 24.303510] split_vma+0xc6/0x110 [ 24.303980] mprotect_fixup+0x8d2/0xb30 [ 24.304501] do_mprotect_pkey+0x87e/0xd40 [ 24.305048] __x64_sys_mprotect+0x78/0xc0 [ 24.305587] do_syscall_64+0x3f/0x90 [ 24.306109] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.306759] [ 24.306979] Freed by task 212: [ 24.307393] kasan_save_stack+0x22/0x50 [ 24.307924] kasan_set_track+0x25/0x30 [ 24.308432] kasan_save_free_info+0x2b/0x50 [ 24.308963] __kasan_slab_free+0x10a/0x190 [ 24.309498] kmem_cache_free+0x10d/0x4d0 [ 24.310038] rcu_core+0x8c8/0x2860 [ 24.310481] __do_softirq+0x1b7/0x7d4 [ 24.310971] [ 24.311190] Last potentially related work creation: [ 24.311799] kasan_save_stack+0x22/0x50 [ 24.312357] __kasan_record_aux_stack+0x8e/0xa0 [ 24.312936] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.313577] remove_vma+0x139/0x170 [ 24.314066] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.314621] do_vmi_munmap+0x1f1/0x2b0 [ 24.315110] __vm_munmap+0x138/0x3a0 [ 24.315584] __x64_sys_munmap+0x59/0x80 [ 24.316113] do_syscall_64+0x3f/0x90 [ 24.316592] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.317239] [ 24.317455] Second to last potentially related work creation: [ 24.318175] kasan_save_stack+0x22/0x50 [ 24.318684] __kasan_record_aux_stack+0x8e/0xa0 [ 24.319264] __call_rcu_common.constprop.0+0x6a/0xb90 [ 24.319922] remove_vma+0x139/0x170 [ 24.320372] do_vmi_align_munmap+0xd4a/0x11f0 [ 24.320928] do_vmi_munmap+0x1f1/0x2b0 [ 24.321414] mmap_region+0x1f9/0x2660 [ 24.321927] do_mmap+0x854/0xf00 [ 24.322361] vm_mmap_pgoff+0x1a6/0x3a0 [ 24.322844] ksys_mmap_pgoff+0x3af/0x500 [ 24.323343] do_syscall_64+0x3f/0x90 [ 24.323816] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 [ 24.324478] [ 24.324694] The buggy address belongs to the object at ffff88800d678570 [ 24.324694] which belongs to the cache vm_area_struct of size 168 [ 24.326201] The buggy address is located 88 bytes inside of [ 24.326201] freed 168-byte region [ffff88800d678570, ffff88800d678618) [ 24.327645] [ 24.327863] The buggy address belongs to the physical page: [ 24.328538] page:0000000052e3322f refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd678 [ 24.329623] memcg:ffff88800d3f9f01 [ 24.330049] anon flags: 0x100000000000200(slab|node=0|zone=1) [ 24.330785] page_type: 0xffffffff() [ 24.331240] raw: 0100000000000200 ffff8880087a0c80 0000000000000000 dead000000000001 [ 24.332166] raw: 0000000000000000 0000000000110011 00000001ffffffff ffff88800d3f9f01 [ 24.333080] page dumped because: kasan: bad access detected [ 24.333746] [ 24.333961] Memory state around the buggy address: [ 24.334540] ffff88800d678480: fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.335435] ffff88800d678500: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb [ 24.336312] >ffff88800d678580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 24.337160] ^ [ 24.337822] ffff88800d678600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 [ 24.338705] ffff88800d678680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 24.339576] ================================================================== [ 24.340804] Disabling lock debugging due to kernel taint [ 26.576466] BUG: Bad rss-counter state mm:000000000cd2e55e type:MM_FILEPAGES val:33 [ 26.577284] BUG: Bad rss-counter state mm:000000000cd2e55e type:MM_ANONPAGES val:22 [ 27.037375] BUG: Bad rss-counter state mm:000000003f47d0e2 type:MM_FILEPAGES val:33 [ 27.037951] BUG: Bad rss-counter state mm:000000003f47d0e2 type:MM_ANONPAGES val:22 Warning: Permanently added '[localhost]:3222' (ECDSA) to the list of known hosts. 2023/06/21 02:57:39 fuzzer started 2023/06/21 02:57:39 dialing manager at localhost:36067 2023/06/21 02:57:39 checking machine... 2023/06/21 02:57:39 checking revisions... [ 27.754839] kmemleak: Automatic memory scanning thread ended 2023/06/21 02:57:39 testing simple program... [ 27.808339] cgroup: Unknown subsys name 'net' [ 27.847262] cgroup: Unknown subsys name 'rlimit' executing program executing program executing program VM DIAGNOSIS: 02:57:39 Registers: info registers vcpu 0 RAX=0000000000000000 RBX=ffff888015ba7e00 RCX=ffffffff81af9b2c RDX=ffff888015b751c0 RSI=0000000000000000 RDI=0000000000000007 RBP=ffff888015ba7e20 RSP=ffff888015ba7be0 R8 =0000000000000007 R9 =0000000000000000 R10=000000000000005a R11=0000000000000000 R12=000000000000005a R13=ffff8880192d52d0 R14=ffff888015ba7db0 R15=ffff888015ba7e00 RIP=ffffffff814c0860 RFL=00000206 [-----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 00007f26ba641700 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=00007f7e24a0a0b0 CR3=0000000015b80000 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=2038333a37353a3230203132206e754a XMM01=73732878696e755f6d6170203a5d3832 XMM02=65736f6c63206e6f6973736573203a29 XMM03=755f6d6170203a5d3832325b64687373 XMM04=69662068637573206f4e203a656c6163 XMM05=3a656c696620766e65206e65706f206f XMM06=65733a6468737328766e655f6d617020 XMM07=6b7a79732038333a37353a3230203132 XMM08=69767265733d7373616c63742030733a XMM09=00000000000000000000000000000000 XMM10=00000000000000000000000000000000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000 info registers vcpu 1 RAX=ffff88806cf35000 RBX=0000000000000001 RCX=ffffffff8451250e RDX=ffffed100d9e6a01 RSI=0000000000000004 RDI=ffffffff81288ac5 RBP=dffffc0000000000 RSP=ffff888008e07e70 R8 =0000000000000000 R9 =ffffed100d9e6a00 R10=ffff88806cf35003 R11=ffff888008c04400 R12=ffffffff85d3d350 R13=1ffff110011c0fd3 R14=0000000000000000 R15=0000000000000000 RIP=ffffffff8451349f RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1 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 0000000000000000 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=00007f287f450c60 CR3=000000000c694000 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=f701cdc9978a6686284ca81ce4d37166 XMM02=2c67c8bc2e329bc3000000000011a518 XMM03=fb795ef6d65770560000000000121368 XMM04=c0ef745809d8c58000000000000ae988 XMM05=dfcdbad4f1609c370000000000132538 XMM06=fd0a70c53ce058660000000000131710 XMM07=e042d86d42eb936e0000000000121640 XMM08=d180e0b90672ae55000000000011a578 XMM09=00000000000000000000000000000000 XMM10=20200000000020202020202020200000 XMM11=00000000000000000000000000000000 XMM12=00000000000000000000000000000000 XMM13=00000000000000000000000000000000 XMM14=00000000000000000000000000000000 XMM15=00000000000000000000000000000000